code stringlengths 23 201k | docstring stringlengths 17 96.2k | func_name stringlengths 0 235 | language stringclasses 1
value | repo stringlengths 8 72 | path stringlengths 11 317 | url stringlengths 57 377 | license stringclasses 7
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@Override
public Object dupNode(Object t) {
return create(((CommonTree) t).token);
} | Creates an ASTNode for the given token. The ASTNode is a wrapper around
antlr's CommonTree class that implements the Node interface.
@param payload
The token.
@return Object (which is actually an ASTNode) for the token. | dupNode | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/hive/hive2rel/parsetree/parser/ParseDriver.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/hive/hive2rel/parsetree/parser/ParseDriver.java | BSD-2-Clause |
@Override
public Object errorNode(TokenStream input, Token start, Token stop, RecognitionException e) {
return new ASTErrorNode(input, start, stop, e);
} | Creates an ASTNode for the given token. The ASTNode is a wrapper around
antlr's CommonTree class that implements the Node interface.
@param payload
The token.
@return Object (which is actually an ASTNode) for the token. | errorNode | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/hive/hive2rel/parsetree/parser/ParseDriver.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/hive/hive2rel/parsetree/parser/ParseDriver.java | BSD-2-Clause |
public ASTNode parse(String command) throws ParseException {
if (LOG.isDebugEnabled()) {
LOG.debug("Parsing command: " + command);
}
HiveLexerX lexer = new HiveLexerX(new ANTLRNoCaseStringStream(command));
TokenRewriteStream tokens = new TokenRewriteStream(lexer);
HiveParser parser = new Hive... | Parses a command, optionally assigning the parser's token stream to the
given context.
@param command command to parse
@return {@link ASTNode} object for parsed AST
@throws ParseException when parsing error is detected | parse | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/hive/hive2rel/parsetree/parser/ParseDriver.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/hive/hive2rel/parsetree/parser/ParseDriver.java | BSD-2-Clause |
public ASTNode parseSelect(String command) throws ParseException {
if (LOG.isDebugEnabled()) {
LOG.debug("Parsing command: " + command);
}
HiveLexerX lexer = new HiveLexerX(new ANTLRNoCaseStringStream(command));
TokenRewriteStream tokens = new TokenRewriteStream(lexer);
HiveParser parser = ne... | Parses a command, optionally assigning the parser's token stream to the
given context.
@param command command to parse
@return {@link ASTNode} object for parsed AST
@throws ParseException when parsing error is detected | parseSelect | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/hive/hive2rel/parsetree/parser/ParseDriver.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/hive/hive2rel/parsetree/parser/ParseDriver.java | BSD-2-Clause |
public SqlNode convert(RelNode coralRelNode) {
return visitChild(0, coralRelNode).asStatement();
} | Converts a CoralRelNode to its CoralSqlNode representation.
@param coralRelNode Coral intermediate representation.
@return Result of converting the RelNode to a SqlNode. | convert | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | BSD-2-Clause |
private static SqlDialect returnInstance() {
SqlDialect.Context context = SqlDialect.EMPTY_CONTEXT.withDatabaseProduct(SqlDialect.DatabaseProduct.HIVE)
.withNullCollation(NullCollation.HIGH);
return new SqlDialect(context) {
@Override
public boolean requireCastOnString() {
/**
... | Converts a CoralRelNode to its CoralSqlNode representation.
@param coralRelNode Coral intermediate representation.
@return Result of converting the RelNode to a SqlNode. | returnInstance | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | BSD-2-Clause |
@Override
public boolean requireCastOnString() {
/**
* The default value is `false`, then Coral will drop `CAST` for RexNode like `CAST(number_string AS BIGINT) > 0`,
* which might cause translation quality issue.
* For example, without explicit `CAST`, Spark will cast the `numb... | Converts a CoralRelNode to its CoralSqlNode representation.
@param coralRelNode Coral intermediate representation.
@return Result of converting the RelNode to a SqlNode. | requireCastOnString | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | BSD-2-Clause |
@Override
public Result visit(TableScan e) {
List<String> qualifiedName = e.getTable().getQualifiedName();
if (qualifiedName.size() > 2) {
qualifiedName = qualifiedName.subList(qualifiedName.size() - 2, qualifiedName.size());
}
final SqlIdentifier identifier = new SqlIdentifier(qualifiedName, Sq... | TableScan RelNode represents a relational operator that returns the contents of a table.
Super's implementation generates a table namespace with the catalog, schema, and table name.
This overriding implementation removes the catalog name from the table namespace, if present.
@param e TableScan RelNode. An example:
... | visit | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | BSD-2-Clause |
@Override
public Result visit(Correlate e) {
final Result leftResult = visitChild(0, e.getLeft()).resetAlias();
// Add context specifying correlationId has same context as its left child
correlTableMap.put(e.getCorrelationId(), leftResult.qualifiedContext());
final Result rightResult = visitChild(1,... | Correlate represents a RelNode with two child relational expressions linked by a join type.
Super's implementation introduces a LATERAL operator and an AS operator with a single alias as parents of the conversion result of the right child.
This overriding implementation performs the same operations only when the right ... | visit | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | BSD-2-Clause |
public Result visit(LogicalTableFunctionScan e) {
RexCall call = (RexCall) e.getCall();
SqlOperator functionOperator = call.getOperator();
final List<SqlNode> functionOperands = new ArrayList<>();
for (RexNode rexOperand : call.getOperands()) {
RexFieldAccess rexFieldAccess = (RexFieldAccess) rexO... | Custom table-valued functions are represented as LogicalTableFunctionScan type relational expression.
Current version of Calcite used in Coral does not implement traversing
a LogicalTableFunctionScan type RelNode. Hence, this implementation is added.
@param e RelNode of type LogicalTableFunctionScan as input. Example:... | visit | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | BSD-2-Clause |
@Override
public Result visit(Join e) {
Result leftResult = this.visitChild(0, e.getLeft()).resetAlias();
Result rightResult = this.visitChild(1, e.getRight()).resetAlias();
Context leftContext = leftResult.qualifiedContext();
Context rightContext = rightResult.qualifiedContext();
SqlNode sqlCondi... | Join represents a RelNode with two child relational expressions linked by a join type.
Super's implementation uses the conversion result of the right child as is.
When the right child of a Join node is an Uncollect / TableFunction type RelNode,
this overriding implementation introduces LATERAL and AS operators as paren... | visit | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | BSD-2-Clause |
@Override
public Result visit(Uncollect e) {
// projectResult's SqlNode representation: SELECT `complex`.`c` AS `col` FROM (VALUES (0)) AS `t` (`ZERO`)
final Result projectResult = visitChild(0, e.getInput());
// Extract column(s) to unnest from projectResult
// to generate simpler operand for UNNE... | Uncollect RelNode represents a table function that expands an array/map column into a relation.
Super's implementation uses the conversion result of the child node as is and appends the function operator and an AS operator with two aliases.
This generates a SqlNode like:
<pre>
UNNEST (SELECT `complex`.`c` AS `col` ... | visit | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | BSD-2-Clause |
@Override
public Context aliasContext(Map<String, RelDataType> aliases, boolean qualified) {
return new AliasContext(INSTANCE, aliases, qualified) {
@Override
public SqlNode toSql(RexProgram program, RexNode rex) {
if (rex.getKind() == SqlKind.FIELD_ACCESS) {
final List<String> acces... | Override this method to handle the conversion for {@link RexFieldAccess} `f(x).y` where `f` is an operator,
which returns a struct containing field `y`.
Calcite converts it to a {@link SqlIdentifier} with {@link SqlIdentifier#names} as ["f(x)", "y"] where "f(x)" and "y" are String,
which is opaque and not aligned with... | aliasContext | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | BSD-2-Clause |
@Override
public SqlNode toSql(RexProgram program, RexNode rex) {
if (rex.getKind() == SqlKind.FIELD_ACCESS) {
final List<String> accessNames = new ArrayList<>();
RexNode referencedExpr = rex;
// Use the loop to get the top-level struct (`f(x)` in the example above),
... | Override this method to handle the conversion for {@link RexFieldAccess} `f(x).y` where `f` is an operator,
which returns a struct containing field `y`.
Calcite converts it to a {@link SqlIdentifier} with {@link SqlIdentifier#names} as ["f(x)", "y"] where "f(x)" and "y" are String,
which is opaque and not aligned with... | toSql | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/transformers/CoralRelToSqlNodeConverter.java | BSD-2-Clause |
@Override
public boolean condition(SqlCall sqlCall) {
if (ITEM_OPERATOR.equalsIgnoreCase(sqlCall.getOperator().getName())) {
final SqlNode columnNode = sqlCall.getOperandList().get(0);
return deriveRelDatatype(columnNode) instanceof ArraySqlType;
}
return false;
} | Transformer to convert SqlCall from array[i] to array[i+1] to ensure array indexes start at 1. | condition | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/transformers/ShiftArrayIndexTransformer.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/transformers/ShiftArrayIndexTransformer.java | BSD-2-Clause |
@Override
public SqlCall transform(SqlCall sqlCall) {
final SqlNode itemNode = sqlCall.getOperandList().get(1);
SqlNode newIndex;
if (itemNode instanceof SqlNumericLiteral
&& deriveRelDatatype(itemNode).getSqlTypeName().equals(SqlTypeName.INTEGER)) {
final Integer value = ((SqlNumericLiteral... | Transformer to convert SqlCall from array[i] to array[i+1] to ensure array indexes start at 1. | transform | java | linkedin/coral | coral-hive/src/main/java/com/linkedin/coral/transformers/ShiftArrayIndexTransformer.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/main/java/com/linkedin/coral/transformers/ShiftArrayIndexTransformer.java | BSD-2-Clause |
@Override
public void close() throws HiveException {
forwardObj[0] = count;
forward(forwardObj);
forward(forwardObj);
} | CoralTestUDTF outputs the number of rows seen, twice. It's output twice
to test outputting of rows on close with lateral view. | close | java | linkedin/coral | coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/CoralTestUDTF.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/CoralTestUDTF.java | BSD-2-Clause |
@Override
public StructObjectInspector initialize(StructObjectInspector argOIs) {
ArrayList<String> fieldNames = new ArrayList<>();
ArrayList<ObjectInspector> fieldOIs = new ArrayList<>();
fieldNames.add("col1");
fieldOIs.add(PrimitiveObjectInspectorFactory.javaIntObjectInspector);
return ObjectIn... | CoralTestUDTF outputs the number of rows seen, twice. It's output twice
to test outputting of rows on close with lateral view. | initialize | java | linkedin/coral | coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/CoralTestUDTF.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/CoralTestUDTF.java | BSD-2-Clause |
@Override
public void process(Object[] args) {
count++;
} | CoralTestUDTF outputs the number of rows seen, twice. It's output twice
to test outputting of rows on close with lateral view. | process | java | linkedin/coral | coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/CoralTestUDTF.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/CoralTestUDTF.java | BSD-2-Clause |
private Table getTable(String db, String table) {
Schema dbSchema = schema.getSubSchema(db);
Preconditions.checkNotNull(dbSchema);
return dbSchema.getTable(table);
} | Provide instance of Table given db and table name. This expects that db exists
@param db database name
@param table table name
@return Instance of schema Table if it exists; null otherwise
@throws NullPointerException if db does not exist | getTable | java | linkedin/coral | coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/HiveTableTest.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/HiveTableTest.java | BSD-2-Clause |
private static HiveSchema getHiveSchema() {
HiveMetastoreClientProvider mscProvider = new HiveMetastoreClientProvider(hive.getConf());
return new HiveSchema(mscProvider.getMetastoreClient());
} | Provide instance of Table given db and table name. This expects that db exists
@param db database name
@param table table name
@return Instance of schema Table if it exists; null otherwise
@throws NullPointerException if db does not exist | getHiveSchema | java | linkedin/coral | coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/HiveTableTest.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/HiveTableTest.java | BSD-2-Clause |
static void setOrUpdateDaliFunction(Table table, String functionName, String functionClass) {
table.setOwner("daliview");
Map<String, String> parameters = table.getParameters();
String[] split = table.getParameters().getOrDefault("functions", "").split(" |:");
Map<String, String> functionMap = new HashM... | Caller must explicitly make changes persistent by calling alter_table method on
metastore client to make changes persistent. | setOrUpdateDaliFunction | java | linkedin/coral | coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/TestUtils.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/TestUtils.java | BSD-2-Clause |
public static HiveConf loadResourceHiveConf() {
InputStream hiveConfStream = TestUtils.class.getClassLoader().getResourceAsStream("hive.xml");
HiveConf hiveConf = new HiveConf();
hiveConf.set(CORAL_HIVE_TEST_DIR,
System.getProperty("java.io.tmpdir") + "/coral/hive/" + UUID.randomUUID().toString());
... | Caller must explicitly make changes persistent by calling alter_table method on
metastore client to make changes persistent. | loadResourceHiveConf | java | linkedin/coral | coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/TestUtils.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/TestUtils.java | BSD-2-Clause |
@Test(expectedExceptions = { java.lang.IllegalStateException.class })
public void testUnsupportedOuterExplodeWithoutColumns() {
String input = "SELECT col FROM (SELECT ARRAY('v1', 'v2') as arr) tmp LATERAL VIEW OUTER EXPLODE(arr) arr_alias";
String expected = "";
SqlNode sqlNode = convert(input);
asse... | OUTER EXPLODE without column aliases are not supported yet.
See details in {@link ParseTreeBuilder#visitLateralViewExplode(List, List, SqlCall, boolean)} | testUnsupportedOuterExplodeWithoutColumns | java | linkedin/coral | coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/parsetree/ParseTreeBuilderTest.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/parsetree/ParseTreeBuilderTest.java | BSD-2-Clause |
@Test
public void testUnquotedKeywordAsColumnName() {
HiveToRelConverter hiveToRelConverter = new HiveToRelConverter(msc);
Table table = msc.getTable("test", "quoted_reserved_keyword_view");
// Remove the backquotes associated with the view text
String input = table.getViewExpandedText().replaceAll("`... | Validates if coral-hive can translate views with unquoted reserved keywords as column names. | testUnquotedKeywordAsColumnName | java | linkedin/coral | coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/parsetree/ParseTreeBuilderTest.java | https://github.com/linkedin/coral/blob/master/coral-hive/src/test/java/com/linkedin/coral/hive/hive2rel/parsetree/ParseTreeBuilderTest.java | BSD-2-Clause |
public String getScript() {
final String functionDefinitionsOutput = String.join("\n", functionDefinitions);
final String statementsOutput = String.join("\n", statements);
return functionDefinitionsOutput.isEmpty() ? statementsOutput
: String.join("\n", functionDefinitionsOutput, statementsOutput);
... | Gets the the generated Pig Latin script.
@return The derived Pig Latin script | getScript | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigBuilder.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigBuilder.java | BSD-2-Clause |
public String getUniqueAlias() {
++intermediateAliasCount;
return INTERMEDIATE_ALIAS_PREFIX + intermediateAliasCount;
} | Gets a unique Pig Latin alias in this translation
@return A unique Pig Latin identifier for this translation. | getUniqueAlias | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigBuilder.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigBuilder.java | BSD-2-Clause |
public String convert(RelNode root, String outputRelation) {
final RelToPigBuilder context = new RelToPigBuilder();
context.addFunctionDefinitions(PigRelUtils.getAllFunctionDefinitions(root));
visit(context, root, outputRelation);
return context.getScript();
} | Converts a SQL query represented in Calcite Relational Algebra, root, to Pig Latin
where the final output of the table is stored in the alias, outputRelation.
@param root Root node of the SQL query
@param outputRelation The alias of the variable that the SQL query is to be dumped
@return Pig Latin equivalent of the SQ... | convert | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
private void visit(RelToPigBuilder state, RelNode relNode, String outputRelation) {
//TODO(ralam): Add more supported types.
if (relNode instanceof TableScan) {
visit(state, (TableScan) relNode, outputRelation);
} else if (relNode instanceof LogicalFilter) {
visit(state, (LogicalFilter) relNode... | Delegates RelNodes to its specific RelNode type handler
@param relNode input RelNode
@param outputRelation variable where RelNode operation output will be stored
@return Pig Latin script for all operations in the DAG of RelNodes with root relNode | visit | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
private void visit(RelToPigBuilder state, TableScan tableScan, String outputRelation) {
state.addStatement(PigTableScan.getScript(tableScan, outputRelation, pigLoadFunction, tableToPigPathFunction));
} | Generates Pig Latin to perform a TableScan.
@param state Intermediate state of the query translation
@param tableScan TableScan node
@param outputRelation name of the variable to be outputted | visit | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
private void visit(RelToPigBuilder state, TableFunctionScan tableFunctionScan, String outputRelation) {
throw new UnsupportedRelNodeException(tableFunctionScan);
} | Generates Pig Latin to perform a TableScan.
@param state Intermediate state of the query translation
@param tableScan TableScan node
@param outputRelation name of the variable to be outputted | visit | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
private void visit(RelToPigBuilder state, LogicalValues logicalValues, String outputRelation) {
throw new UnsupportedRelNodeException(logicalValues);
} | Generates Pig Latin to perform a TableScan.
@param state Intermediate state of the query translation
@param tableScan TableScan node
@param outputRelation name of the variable to be outputted | visit | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
private void visit(RelToPigBuilder state, LogicalFilter logicalFilter, String outputRelation) {
visit(state, logicalFilter.getInput(), outputRelation);
state.addStatement(PigLogicalFilter.getScript(logicalFilter, outputRelation, outputRelation));
} | Generates Pig Latin to perform a TableScan.
@param state Intermediate state of the query translation
@param logicalFilter LogicalFilter node
@param outputRelation name of the variable to be outputted | visit | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
private void visit(RelToPigBuilder state, LogicalProject logicalProject, String outputRelation) {
visit(state, logicalProject.getInput(), outputRelation);
state.addStatement(PigLogicalProject.getScript(logicalProject, outputRelation, outputRelation));
} | Generates Pig Latin to perform a LogicalProject.
@param state Intermediate state of the query translation
@param logicalProject LogicalProject node
@param outputRelation name of the variable to be outputted | visit | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
private void visit(RelToPigBuilder state, LogicalJoin logicalJoin, String outputRelation) {
final String leftInputRelation = state.getUniqueAlias();
visit(state, logicalJoin.getLeft(), leftInputRelation);
final String rightInputRelation = state.getUniqueAlias();
visit(state, logicalJoin.getRight(), rig... | Generates Pig Latin to perform a LogicalJoin.
@param state Intermediate state of the query translation
@param logicalJoin LogicalJoin node
@param outputRelation name of the variable to be outputted | visit | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
private void visit(RelToPigBuilder state, LogicalCorrelate logicalCorrelate, String outputRelation) {
throw new UnsupportedRelNodeException(logicalCorrelate);
} | Generates Pig Latin to perform a LogicalJoin.
@param state Intermediate state of the query translation
@param logicalJoin LogicalJoin node
@param outputRelation name of the variable to be outputted | visit | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
private void visit(RelToPigBuilder state, LogicalUnion logicalUnion, String outputRelation) {
List<String> inputRelations = logicalUnion.getInputs().stream().map(input -> {
String inputRelation = state.getUniqueAlias();
visit(state, input, inputRelation);
return inputRelation;
}).collect(Colle... | Generates Pig Latin to perform a LogicalUnion.
@param state Intermediate state of the query translation
@param logicalUnion LogicalUnion node
@param outputRelation name of the variable to be outputted | visit | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
private void visit(RelToPigBuilder state, LogicalIntersect logicalIntersect, String outputRelation) {
throw new UnsupportedRelNodeException(logicalIntersect);
} | Generates Pig Latin to perform a LogicalUnion.
@param state Intermediate state of the query translation
@param logicalUnion LogicalUnion node
@param outputRelation name of the variable to be outputted | visit | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
private void visit(RelToPigBuilder state, LogicalMinus logicalMinus, String outputRelation) {
throw new UnsupportedRelNodeException(logicalMinus);
} | Generates Pig Latin to perform a LogicalUnion.
@param state Intermediate state of the query translation
@param logicalUnion LogicalUnion node
@param outputRelation name of the variable to be outputted | visit | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
private void visit(RelToPigBuilder state, LogicalAggregate logicalAggregate, String outputRelation) {
visit(state, logicalAggregate.getInput(), outputRelation);
state.addStatement(PigLogicalAggregate.getScript(logicalAggregate, outputRelation, outputRelation));
} | Generates Pig Latin to perform a LogicalAggregate.
@param state Intermediary state of the query translation
@param logicalAggregate LogicalAggregate node
@param outputRelation name of the variable to be outputted | visit | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
private void visit(RelToPigBuilder state, LogicalMatch logicalMatch, String outputRelation) {
throw new UnsupportedRelNodeException(logicalMatch);
} | Generates Pig Latin to perform a LogicalAggregate.
@param state Intermediary state of the query translation
@param logicalAggregate LogicalAggregate node
@param outputRelation name of the variable to be outputted | visit | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
private void visit(RelToPigBuilder state, LogicalSort logicalSort, String outputRelation) {
throw new UnsupportedRelNodeException(logicalSort);
} | Generates Pig Latin to perform a LogicalAggregate.
@param state Intermediary state of the query translation
@param logicalAggregate LogicalAggregate node
@param outputRelation name of the variable to be outputted | visit | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
private void visit(RelToPigBuilder state, LogicalExchange logicalExchange, String outputRelation) {
throw new UnsupportedRelNodeException(logicalExchange);
} | Generates Pig Latin to perform a LogicalAggregate.
@param state Intermediary state of the query translation
@param logicalAggregate LogicalAggregate node
@param outputRelation name of the variable to be outputted | visit | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/RelToPigLatinConverter.java | BSD-2-Clause |
public static Function lookup(String functionName) {
return lookup(functionName.toLowerCase(), false);
} | Returns the UDF with a given functionName in lowercase.
If a UDF is not found for the given functionName, null is returned.
@param functionName Name of a function
@return UDF for the function | lookup | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/CalcitePigOperatorMap.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/CalcitePigOperatorMap.java | BSD-2-Clause |
public static Function lookup(String functionName, Boolean caseSensitive) {
final String functionLookupName = caseSensitive ? functionName : functionName.toLowerCase();
return UDF_MAP.getOrDefault(functionLookupName, null);
} | Returns the UDF with a given functionName.
If caseSensitive is set to true, the casing of functionName is preserved.
If caseSensitive is set to false, the functionName is set to lower case.
If a UDF is not found for the given functionName, null is returned.
@param functionName Name of a function
@param caseSensitive S... | lookup | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/CalcitePigOperatorMap.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/CalcitePigOperatorMap.java | BSD-2-Clause |
public static String getScript(LogicalAggregate logicalAggregate, String outputRelation, String inputRelation) {
// TODO: Add support for GROUPING SETS using null literal projections and UNIONs
if (logicalAggregate.getGroupSets().size() != 1) {
throw new UnsupportedRexCallException("Only grouping sets of... | Translates a Calcite LogicalAggregate into Pig Latin
@param logicalAggregate The Calcite LogicalAggregate to be translated
@param outputRelation The variable that stores the aggregate output
@param inputRelation The variable that has stored the Pig relation to be aggregated
@return The Pig Latin for the logicalAggrega... | getScript | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalAggregate.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalAggregate.java | BSD-2-Clause |
private static String getGroupByStatement(LogicalAggregate logicalAggregate, String outputRelation,
String inputRelation) {
final List<Integer> groupSet = logicalAggregate.getGroupSet().toList();
if (groupSet.isEmpty()) {
return String.format(GROUP_ALL_TEMPLATE, outputRelation, inputRelation);
... | Translates SQL GROUP BY sets in LogicalAggregates into Pig Latin
@param logicalAggregate The Calcite LogicalAggregate to be translated
@param outputRelation The variable that stores the aggregate output
@param inputRelation The variable that has stored the Pig relation to be aggregated
@return The Pig Latin for a SQL ... | getGroupByStatement | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalAggregate.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalAggregate.java | BSD-2-Clause |
private static String getForEachStatement(LogicalAggregate logicalAggregate, String outputRelation,
String inputRelation, String bagIdentifier) {
final List<String> outputFieldNames = PigRelUtils.getOutputFieldNames(logicalAggregate);
final List<String> inputFieldNames = PigRelUtils.getOutputFieldNames(l... | Translates aggregate function calls in LogicalAggregates into Pig Latin
@param logicalAggregate The Calcite LogicalAggregate to be translated
@param outputRelation The variable that stores the aggregate output
@param inputRelation The variable that has stored the Pig relation to be aggregated
@param bagIdentifier The ... | getForEachStatement | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalAggregate.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalAggregate.java | BSD-2-Clause |
private static String getGroupSetFields(List<Integer> groupSet, List<String> outputFieldNames,
List<String> inputFieldNames) {
if (groupSet.size() == 1) {
return String.format(FIELD_TEMPLATE, "group", outputFieldNames.get(groupSet.get(0)));
}
return groupSet.stream()
.map(groupByFieldI... | Translates a GROUP BY set into a projection list in Pig Latin
@param groupSet List of column index references
@param outputFieldNames List-index based mapping from Calcite index reference to field name of
the output.
@param inputFieldNames List-index based mapping from Calcite index reference t... | getGroupSetFields | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalAggregate.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalAggregate.java | BSD-2-Clause |
private static String getAggregateFunctionCalls(LogicalAggregate logicalAggregate, List<String> outputFieldNames,
List<String> inputFieldNames, String bagIdentifier) {
final int groupBySetOffset = logicalAggregate.getGroupSet().toList().size();
final List<String> aggregateStatements = new ArrayList<>();
... | Translates the aggregate functions called in a LogicalAggregate into a projection list of expressions for
each aggregate function called.
@param logicalAggregate The Calcite LogicalAggregate to be translated
@param outputFieldNames List-index based mapping from Calcite index reference to field accessors of
... | getAggregateFunctionCalls | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalAggregate.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalAggregate.java | BSD-2-Clause |
public static String getScript(LogicalFilter logicalFilter, String outputRelation, String inputRelation) {
List<String> inputFieldNames = PigRelUtils.getOutputFieldNames(logicalFilter.getInput());
String conditionExpression =
PigRexUtils.convertRexNodeToPigExpression(logicalFilter.getCondition(), inputF... | Translates a Calcite LogicalFilter into Pig Latin
@param logicalFilter The Calcite LogicalFilter to be translated
@param outputRelation The variable that stores the filtered output
@param inputRelation The variable that has stored the Pig relation to be filtered
@return The Pig Latin for the logicalFilter in the form o... | getScript | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalFilter.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalFilter.java | BSD-2-Clause |
public static String getScript(LogicalJoin logicalJoin, String outputRelation, String leftInputRelation,
String rightInputRelation) {
final List<String> leftInputFieldNames = PigRelUtils.getOutputFieldNames(logicalJoin.getLeft());
final List<String> rightInputFieldNames = PigRelUtils.getOutputFieldNames(... | Translates a Calcite LogicalJoin into Pig Latin
@param logicalJoin The Calcite LogicalJoin to be translated
@param outputRelation The variable that stores the filtered output
@param leftInputRelation The variable that stores the Pig relation on the left of the join
@param rightInputRelation The variable that stores th... | getScript | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalJoin.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalJoin.java | BSD-2-Clause |
private static Pair<List<String>, List<String>> getConditionFields(RexNode rexNode, List<String> inputFieldNames) {
if (!(rexNode instanceof RexCall)) {
throw new UnsupportedOperationException(
String.format("Operator '%s' is not supported in a JOIN condition.", rexNode.getKind()));
}
final ... | Creates an ordered field list for the left and right branches of a JOIN.
Only EQUIJOINS with one or more condition are supported.
For example, if we have a query that joins two tables, tableA and tableB on:
tableA.fa = tableB.fb AND tableA.ga = tableB.gb AND tableA.ha = tableB.hb
The output of this method will co... | getConditionFields | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalJoin.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalJoin.java | BSD-2-Clause |
private static Pair<String, String> getJoinStatements(LogicalJoin logicalJoin, String leftInputRelation,
String rightInputRelation, Pair<List<String>, List<String>> conditionFields) {
final String rightJoinStatement =
String.format(JOIN_BRANCH_TEMPLATE, rightInputRelation, String.join(", ", condition... | Creates the JOIN conditions of the given Logical Join.
For example:
Suppose we had a FULL OUTER JOIN on two relations:
- RELATION_A
- RELATION_B.
Suppose they join on:
- RELATION_A.a1 = RELATION_B.a2
- RELATION_A.b1 = RELATION_B.c2
Then, the output of this function will the JOIN statements of this logical jo... | getJoinStatements | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalJoin.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalJoin.java | BSD-2-Clause |
private static String getForEachStatement(String outputRelation, List<String> outputFieldNames, String inputRelation,
String leftInputRelation, List<String> leftInputFieldNames, String rightInputRelation,
List<String> rightInputFieldNames) {
final List<String> unwrappedFields = new ArrayList<>();
... | Generates Pig Latin to unwrap a relation that stores JOIN-ed inputs such that the
outputRelation projects the given outputFieldNames schema over the inputRelation.
Example:
Suppose tableA (left) and tableB (right) both have a schema:
(a int, b int)
The output of the join will have an output of:
(a int, b int, ... | getForEachStatement | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalJoin.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalJoin.java | BSD-2-Clause |
public static String getScript(LogicalProject logicalProject, String outputRelation, String inputRelation) {
List<String> outputFieldNames = PigRelUtils.getOutputFieldNames(logicalProject);
List<String> inputFieldNames = PigRelUtils.getOutputFieldNames(logicalProject.getInput());
List<String> projectList ... | Translates a Calcite LogicalProject into Pig Latin
@param logicalProject The Calcite LogicalProject to be translated
@param outputRelation The variable that stores the projection output
@param inputRelation The variable that has stored the Pig relation to perform a projection over
@return The Pig Latin for the logicalP... | getScript | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalProject.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalProject.java | BSD-2-Clause |
public static String getScript(LogicalUnion logicalUnion, String outputRelation, List<String> inputRelations) {
if (inputRelations.size() < 2) {
throw new RuntimeException(
String.format("LogicalUnion was performed with fewer than two tables in query: %s", logicalUnion.toString()));
}
retur... | Translates a Calcite LogicalUnion into Pig Latin
@param logicalUnion The Calcite LogicalUnion to be translated
@param outputRelation The variable that stores the union output
@param inputRelations The list of relations that are part of the union
@return The PigLatin for the logicalUnion over 'n' tables/relations in th... | getScript | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalUnion.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigLogicalUnion.java | BSD-2-Clause |
public static List<String> getOutputFieldNames(RelNode relNode) {
return relNode.getRowType().getFieldList().stream().map(field -> field.getKey().replace('$', 'x'))
.collect(Collectors.toList());
} | Returns a list-index-based map from Calcite indexed references to fully qualified field names for the given
RelDataType.
For example, if we had a RelNode with RelDataType as follows:
relRecordType = RelRecordType(a int, b int, c int)
Calling getOutputFieldNames for relRecordType would return:
getOutputFieldNames(... | getOutputFieldNames | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRelUtils.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRelUtils.java | BSD-2-Clause |
public static Set<String> getAllFunctionDefinitions(RelNode relNode) {
final List<RexNode> childExprs = new ArrayList<>();
if (relNode instanceof LogicalProject) {
final LogicalProject logicalProject = (LogicalProject) relNode;
childExprs.addAll(logicalProject.getChildExps());
} else if (relNod... | Returns a set of all function definitions necessary for the relNode and its children.
A function definition is in the form of:
"DEFINE [pigFunctionName] HiveUDF([hiveFunctionName])"
@param relNode RelNode whose dependencies are to be derived
@return Set of all function definitions necessary for the relNode and it... | getAllFunctionDefinitions | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRelUtils.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRelUtils.java | BSD-2-Clause |
private static Set<String> getAllFunctionDefinitions(RexNode rexNode) {
if (!(rexNode instanceof RexCall)) {
return Collections.emptySet();
}
final RexCall rexCall = (RexCall) rexNode;
final Set<String> dependencyList = new HashSet<>();
final Function function = CalcitePigOperatorMap.lookup(... | Returns a set of all function definitions necessary for the rexNode and its children.
A function definition is in the form of:
"DEFINE [pigFunctionName] HiveUDF([hiveFunctionName])"
@param rexNode RexNode whose dependencies are to be derived
@return Set of all function definitions necessary for the rexNode and it... | getAllFunctionDefinitions | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRelUtils.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRelUtils.java | BSD-2-Clause |
public static String convertRexNodeToPigExpression(RexNode rexNode, List<String> inputFieldNames) {
if (rexNode instanceof RexInputRef) {
return convertRexInputRef((RexInputRef) rexNode, inputFieldNames);
} else if (rexNode instanceof RexCall) {
return convertRexCall((RexCall) rexNode, inputFieldNam... | Transforms a SQL expression represented as a RexNode to equivalent Pig Latin
@param rexNode RexNode SQL expression to be transformed
@param inputFieldNames Column name accessors for input references
@return Pig Latin equivalent of given rexNode | convertRexNodeToPigExpression | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRexUtils.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRexUtils.java | BSD-2-Clause |
private static String convertRexInputRef(RexInputRef rexInputRef, List<String> inputFieldNames) {
if (rexInputRef.getIndex() >= inputFieldNames.size()) {
throw new IllegalArgumentException(String.format(
"RexInputRef failed to access field at index %d with RexInputRef column name mapping of size %d"... | Resolves the Pig Latin accessor name of an input reference given by a RexInputRef
@param rexInputRef Input reference to be resolved
@param inputFieldNames Mapping from list index to accessor name
@return Pig Latin accessor name of the given rexInputRef | convertRexInputRef | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRexUtils.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRexUtils.java | BSD-2-Clause |
private static String convertRexLiteral(RexLiteral rexLiteral) {
Comparable value = rexLiteral.getValue();
switch (rexLiteral.getTypeName()) {
case CHAR:
// We need a special case for NlsString because it adds its charset information to its value.
if (rexLiteral.getValue() instanceof NlsSt... | Resolves the Pig Latin literal for a RexLiteral
@param rexLiteral RexLiteral to be resolved
@return Pig Latin literal of the given rexLiteral | convertRexLiteral | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRexUtils.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRexUtils.java | BSD-2-Clause |
private static String convertRexFieldAccess(RexFieldAccess rexFieldAccess, List<String> inputFieldNames) {
final String parentFieldName = convertRexNodeToPigExpression(rexFieldAccess.getReferenceExpr(), inputFieldNames);
final String nestedFieldName = rexFieldAccess.getField().getName();
return String.join(... | Resolves the Pig Latin expression for a struct field access given by a RexCall.
@param rexFieldAccess RexFieldAccess to be resolved
@param inputFieldNames Mapping from list index to accessor name
@return Pig Latin expression of the given rexCall | convertRexFieldAccess | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRexUtils.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRexUtils.java | BSD-2-Clause |
private static String convertRexCall(RexCall rexCall, List<String> inputFieldNames) {
// TODO(ralam): Add more supported RexCall functions.
PigOperator pigOperator = null;
if (rexCall.getOperator() instanceof SqlSpecialOperator) {
pigOperator = new PigSpecialOperator(rexCall, inputFieldNames);
} ... | Resolves the Pig Latin expression for a SQL expression given by a RexCall.
@param rexCall RexCall to be resolved
@param inputFieldNames Mapping from list index to accessor name
@return Pig Latin expression of the given rexCall | convertRexCall | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRexUtils.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigRexUtils.java | BSD-2-Clause |
public static String getScript(TableScan tableScan, String outputRelation, PigLoadFunction pigLoadFunction,
TableToPigPathFunction tableToPigPathFunction) {
List<String> qualifiedNames = tableScan.getTable().getQualifiedName();
String database = qualifiedNames.get(1);
String table = qualifiedNames.get... | Translates a Calcite LogicalProject into Pig Latin
@param tableScan The Calcite TableScan to be translated
@param outputRelation The variable that stores the loaded table output
@param pigLoadFunction The function that determines what LoadFunc to use for a given table in Pig Latin
@param tableToPigPathFunction The func... | getScript | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigTableScan.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/PigTableScan.java | BSD-2-Clause |
public static PigBuiltinFunction create(String functionName) {
return new PigBuiltinFunction(functionName);
} | Creates a PigBuiltinFunction with the given functionName
@param functionName Name of the function
@return PigBuiltinFunction for the given functionName | create | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigBuiltinFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigBuiltinFunction.java | BSD-2-Clause |
@Override
public String unparse(RexCall rexCall, List<String> inputFieldNames) {
final String functionName = transformFunctionName(rexCall, inputFieldNames);
final String operands = String.join(", ", transformOperands(rexCall, inputFieldNames));
return String.format(FUNCTION_CALL_TEMPLATE, functionName, o... | Creates a PigBuiltinFunction with the given functionName
@param functionName Name of the function
@return PigBuiltinFunction for the given functionName | unparse | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigBuiltinFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigBuiltinFunction.java | BSD-2-Clause |
String transformFunctionName(RexCall rexCall, List<String> inputFieldNames) {
return pigFunctionName;
} | Generates Pig Latin for an identity projection of operands.
@param rexCall RexCall to be transformed
@param inputFieldNames List-index based mapping from Calcite index reference to field names of
the input of the given RexCall.
@return Pig Latin to do an identity projection of operands. | transformFunctionName | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigBuiltinFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigBuiltinFunction.java | BSD-2-Clause |
List<String> transformOperands(RexCall rexCall, List<String> inputFieldNames) {
final List<String> operands = rexCall.getOperands().stream()
.map(operand -> PigRexUtils.convertRexNodeToPigExpression(operand, inputFieldNames))
.collect(Collectors.toList());
return operands;
} | Generates Pig Latin for the function name of the given rexCall
@param rexCall RexCall to be transformed
@param inputFieldNames List-index based mapping from Calcite index reference to field names of
the input of the given RexCall.
@return Pig Latin for the function name of the given rexCall | transformOperands | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigBuiltinFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigBuiltinFunction.java | BSD-2-Clause |
public static PigIfFunction create() {
return new PigIfFunction();
} | PigIfFunction represents the translation from Calcite IF UDF to builtin Pig functions.
The output of the PigIfFunction has the following form:
CASE WHEN condition THEN value ELSE default | create | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigIfFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigIfFunction.java | BSD-2-Clause |
@Override
public String unparse(RexCall rexCall, List<String> inputFieldNames) {
// Hive has a UDF 'if([condition], [value], [default])' that cannot be modelled as a function call/UDF in Pig.
//
// Instead, we model the Hive IF UDF as a CASE statement:
// - CASE WHEN condition THEN value ELSE defa... | PigIfFunction represents the translation from Calcite IF UDF to builtin Pig functions.
The output of the PigIfFunction has the following form:
CASE WHEN condition THEN value ELSE default | unparse | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigIfFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigIfFunction.java | BSD-2-Clause |
public static PigLog2Function create() {
return new PigLog2Function();
} | PigLog2Function represents the translation from Calcite LOG2 UDF to builtin Pig functions.
The output of the PigLogFunction has the following form:
LOG(value)/LOG(2) | create | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigLog2Function.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigLog2Function.java | BSD-2-Clause |
@Override
public String unparse(RexCall rexCall, List<String> inputFieldNames) {
// Hive has a builtin LOG2 function that takes a the logarithm of a value with base 2.
// Pig only has logarithmic functions that have static bases:
// - LOG (base e)
// - LOG10 (base 10)
// We need to represe... | PigLog2Function represents the translation from Calcite LOG2 UDF to builtin Pig functions.
The output of the PigLogFunction has the following form:
LOG(value)/LOG(2) | unparse | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigLog2Function.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigLog2Function.java | BSD-2-Clause |
public static PigLogFunction create() {
return new PigLogFunction();
} | PigLogFunction represents the translation from Calcite LOG UDF to builtin Pig functions.
The output of the PigLogFunction has the following form:
LOG(value)/LOG(base) | create | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigLogFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigLogFunction.java | BSD-2-Clause |
@Override
public String unparse(RexCall rexCall, List<String> inputFieldNames) {
// Hive has a builtin LOG function that takes two arguments:
// - base (the logarithmic base)
// - value (the value that is operated on)
// Pig only has logarithmic functions that have static bases:
// - L... | PigLogFunction represents the translation from Calcite LOG UDF to builtin Pig functions.
The output of the PigLogFunction has the following form:
LOG(value)/LOG(base) | unparse | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigLogFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigLogFunction.java | BSD-2-Clause |
public static PigRandomFunction create() {
return new PigRandomFunction();
} | PigRandomFunction represents the translation from Calcite RAND UDF to builtin Pig functions.
The output of PigRandomFunction has the following form:
RANDOM() | create | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigRandomFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigRandomFunction.java | BSD-2-Clause |
@Override
List<String> transformOperands(RexCall rexCall, List<String> inputFieldNames) {
// Hive has a builtin RAND function that optionally takes an argument for a seed.
// Pig does not have the option to specify a seed.
return Collections.emptyList();
} | PigRandomFunction represents the translation from Calcite RAND UDF to builtin Pig functions.
The output of PigRandomFunction has the following form:
RANDOM() | transformOperands | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigRandomFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigRandomFunction.java | BSD-2-Clause |
public static PigRoundFunction create() {
return new PigRoundFunction();
} | PigRoundFunction represents the translation from Calcite/Hive ROUND to builtin Pig functions.
The output of PigRoundFunction has the following form:
- No precision:
ROUND(value)
- With precision:
ROUND_TO(value, precision) | create | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigRoundFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigRoundFunction.java | BSD-2-Clause |
@Override
String transformFunctionName(RexCall rexCall, List<String> inputFieldNames) {
// Hive has a builtin ROUND function that takes up to two arguments
// - value
// - precision [optional]
// Pig has two functions to do rounding:
// - ROUND (1 argument; no precision parameter)
... | PigRoundFunction represents the translation from Calcite/Hive ROUND to builtin Pig functions.
The output of PigRoundFunction has the following form:
- No precision:
ROUND(value)
- With precision:
ROUND_TO(value, precision) | transformFunctionName | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigRoundFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigRoundFunction.java | BSD-2-Clause |
public static PigSubstringFunction create() {
return new PigSubstringFunction();
} | PigSubstringFunction represents the translation from Calcite Substring UDF to builtin Pig functions.
The output of the PigSubstring has the following form:
SUBSTRING(string, startIndex, endIndex) | create | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigSubstringFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigSubstringFunction.java | BSD-2-Clause |
@Override
List<String> transformOperands(RexCall rexCall, List<String> inputFieldNames) {
// Hive has a builtin SUBSTRING function that takes two or three arguments.
// The semantics of the arguments depend on the number of arguments as follows:
// - SUBSTRING (2 arguments)
// - string
... | PigSubstringFunction represents the translation from Calcite Substring UDF to builtin Pig functions.
The output of the PigSubstring has the following form:
SUBSTRING(string, startIndex, endIndex) | transformOperands | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigSubstringFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigSubstringFunction.java | BSD-2-Clause |
public static PigUDF create(String functionName) {
return new PigUDF(functionName, Collections.emptySet());
} | Creates a PigUDF with a given functionName without any constant parameters.
@param functionName Name of the function
@return PigUDF for the given functionName | create | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigUDF.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigUDF.java | BSD-2-Clause |
public static PigUDF create(String functionName, Set<Integer> constantParameters) {
return new PigUDF(functionName, constantParameters);
} | Creates a PigUDF with a given functionName and constant parameters.
Constant parameters are passed as 0-based indices.
@param functionName Name of the function
@param constantParameters Set of indices that contain constant parameters.
@return PigUDF for the given functionName | create | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigUDF.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigUDF.java | BSD-2-Clause |
@Override
public final String unparse(RexCall rexCall, List<String> inputFieldNames) {
final List<String> operands = rexCall.getOperands().stream()
.map(operand -> PigRexUtils.convertRexNodeToPigExpression(operand, inputFieldNames))
.collect(Collectors.toList());
final String functionName = tr... | Transforms a UDF call represented as a RexCall to a target language.
The expression of the RexCall will be produced by a pipelined sequence as follows:
translateOperands -> Returns a comma separated list of operands (OPERANDS_STR)
translateFunctionName -> Returns the Pig Latin name for the operator in th... | unparse | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigUDF.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigUDF.java | BSD-2-Clause |
public List<String> getFunctionDefinitions(RexCall rexCall, List<String> inputFieldNames) {
final String constantParameterStatement = getConstantParameterStatement(rexCall, inputFieldNames);
return ImmutableList.of(String.format(DEFINE_PIG_BUILTIN_UDF_TEMPLATE,
translateFunctionName(rexCall, inputFieldN... | Generates the Pig Latin to define the functions needed for the given rexCall.
@param rexCall RexCall representing the function
@param inputFieldNames List-index based mapping from Calcite index reference to field names of
the input of the given RexCall.
@return List of Pig DEFINE statements need... | getFunctionDefinitions | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigUDF.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigUDF.java | BSD-2-Clause |
private String translateFunctionName(RexCall rexCall, List<String> inputFieldNames) {
String versionedpigFunctionName = getVersionedFunctionName(rexCall);
// There may exist calls to functions with different constant parameters.
// We need to add the constant parameters to its name to ensure uniqueness of ... | Generates Pig Latin for the function name of the given rexCall
@param rexCall RexCall to be transformed
@param inputFieldNames List-index based mapping from Calcite index reference to field names of
the input of the given RexCall.
@return Pig Latin for the function name of the given rexCall | translateFunctionName | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigUDF.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigUDF.java | BSD-2-Clause |
private String getVersionedFunctionName(RexCall rexCall) {
if (!(rexCall.getOperator() instanceof VersionedSqlUserDefinedFunction)) {
return String.format(PIG_UDF_ALIAS_TEMPLATE, hiveFunctionName.replace(NOT_ALPHA_NUMERIC_UNDERSCORE_REGEX, "_"));
}
final VersionedSqlUserDefinedFunction versionedFunct... | Generates the versioned function name for the given rexCall.
If there is no version associated with the functionName, the function is unversioned and is named as follows:
'PIG_UDF_[calciteName]
A versioned function is associated with a versioned table.
There may exist multiple implementations of the same UserDefi... | getVersionedFunctionName | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigUDF.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigUDF.java | BSD-2-Clause |
private String getConstantParameterStatement(RexCall rexCall, List<String> inputFieldNames) {
if (constantParameters.isEmpty()) {
return "";
}
final List<String> parameters = new ArrayList<>();
for (int i = 0; i < rexCall.getOperands().size(); ++i) {
if (!constantParameters.contains(i)) {
... | Generates the Constant Parameter Statement.
Constant Parameters are parameters in a function that are literals.
For example:
infile(field_str, 'file:///user/home/dir/of/file')
In this example, 'file:///user/home/dir/of/file' is a constant parameter.
The Pig Engine cannot distinguish constant parameters, so t... | getConstantParameterStatement | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigUDF.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/functions/PigUDF.java | BSD-2-Clause |
@Override
public String unparse() {
String operator = rexCall.getOperator().getName();
switch (rexCall.getOperator().getKind()) {
case GREATER_THAN:
case GREATER_THAN_OR_EQUAL:
case LESS_THAN:
case LESS_THAN_OR_EQUAL:
case AND:
case OR:
case MINUS:
case PLUS:
... | PigBinaryOperator translates SqlBinaryOperators to Pig Latin. | unparse | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigBinaryOperator.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigBinaryOperator.java | BSD-2-Clause |
@Override
public String unparse() {
// The operands of a case statement are in the form of:
// [
// condition_0, output_0,
// condition_1, output_1,
// ...
// condition_n, output_n,
// [OPTIONAL output_ELSE]
// ]
final List<String> cases = new ArrayList<>();
for (in... | PigCaseOperator translates SqlCaseOperator to Pig Latin. | unparse | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigCaseOperator.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigCaseOperator.java | BSD-2-Clause |
@Override
public String unparse() {
final RexNode castNode = rexCall.getOperands().get(0);
final PigType castFromType = getPigType(castNode.getType().getSqlTypeName());
final PigType castToType = getPigType(rexCall.getType().getSqlTypeName());
if (!PIG_TYPE_CAST_MAP.containsEntry(castFromType, castToT... | PigCastFunction translates SqlCastFunctions to Pig Latin. | unparse | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigCastFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigCastFunction.java | BSD-2-Clause |
private PigType getPigType(SqlTypeName sqlTypeName) {
if (!SQL_TO_PIG_TYPE_MAP.containsKey(sqlTypeName)) {
throw new UnsupportedPigTypeException(sqlTypeName);
}
return SQL_TO_PIG_TYPE_MAP.get(sqlTypeName);
} | Returns the equivalent PigType for a given SqlTypeName.
If the SqlTypeName cannot be tranlsated to Pig Latin, throw an UnsupportedPigTypeException.
@param sqlTypeName The SqlTypeName to be translated.
@return Equivalent PigType for the given sqlTypeName. | getPigType | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigCastFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigCastFunction.java | BSD-2-Clause |
public String getName() {
return name;
} | @return Returns the name of the PigType. | getName | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigCastFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigCastFunction.java | BSD-2-Clause |
@Override
public String unparse() {
// Perform a case-sensitive lookup first
final Function caseSensitivePigUDF = CalcitePigOperatorMap.lookup(rexCall.getOperator().getName(), true);
if (caseSensitivePigUDF != null) {
return caseSensitivePigUDF.unparse(rexCall, inputFieldNames);
}
// If ther... | PigFunction translates SqlUserDefinedFunctions/SqlFunctions to Pig Latin. | unparse | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigFunction.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigFunction.java | BSD-2-Clause |
@Override
public String unparse() {
final String inputField = PigRexUtils.convertRexNodeToPigExpression(rexCall.getOperands().get(0), inputFieldNames);
switch (rexCall.getOperator().getKind()) {
case IS_NULL:
case IS_NOT_NULL:
return String.format("%s %s", inputField, rexCall.getOperator()... | PigPostfixOperator translates SqlPostfixOperators to Pig Latin.
Currently, we only support the following SqlPostFixOperators:
- IS_NULL
- IS_NOT_NULL | unparse | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigPostfixOperator.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigPostfixOperator.java | BSD-2-Clause |
@Override
public String unparse() {
// TODO(ralam): Do not generalize operand calls; we are likely to have special cases
final String operand = PigRexUtils.convertRexNodeToPigExpression(rexCall.getOperands().get(0), inputFieldNames);
switch (rexCall.getOperator().getKind()) {
case NOT:
retur... | PigPrefixOperator translates SqlPrefixOperators to Pig Latin. | unparse | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigPrefixOperator.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigPrefixOperator.java | BSD-2-Clause |
@Override
public String unparse() {
// TODO(ralam): Change this function to do a map-lookup from SQLSpecialOperator function name to Pig Latin.
final String operatorName = rexCall.getOperator().getName();
if (operatorName.equalsIgnoreCase("in")) {
return convertHiveInOperatorCall();
} else if (o... | PigSpecialOperator translates SqlSpecialOperators to Pig Latin. | unparse | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigSpecialOperator.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigSpecialOperator.java | BSD-2-Clause |
private String convertHiveInOperatorCall() {
final List<String> inArrayReferencesList = rexCall.getOperands().stream()
.map(operand -> PigRexUtils.convertRexNodeToPigExpression(operand, inputFieldNames))
.collect(Collectors.toList());
// The Hive In operator defined by coral-hive has the follow... | Translates Hive In operator calls to Pig Latin.
This is necessary because we do not use the Calcite IN operator in coral-hive.
Instead we define a Hive IN operator with special input semantics.
@return Pig Latin of the Hive In operator call for the given inputs | convertHiveInOperatorCall | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigSpecialOperator.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigSpecialOperator.java | BSD-2-Clause |
private String convertItemOperatorCall() {
final RexNode columnReference = rexCall.getOperands().get(0);
String itemOperatorCall;
if (columnReference.getType() instanceof MapSqlType) {
itemOperatorCall = convertMapOperatorCall();
} else {
throw new UnsupportedRexCallException(String.format("... | Translates ITEM operator calls to Pig Latin.
@return Pig Latin of an ITEM operator call, which is implemented by:
- a map access for some given key | convertItemOperatorCall | java | linkedin/coral | coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigSpecialOperator.java | https://github.com/linkedin/coral/blob/master/coral-pig/src/main/java/com/linkedin/coral/pig/rel2pig/rel/operators/PigSpecialOperator.java | BSD-2-Clause |
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