idx int64 0 165k | question stringlengths 73 4.15k | target stringlengths 5 918 | len_question int64 21 890 | len_target int64 3 255 |
|---|---|---|---|---|
154,300 | public void toLeftJoin ( ) { assert ( ( m_leftNode != null && m_rightNode != null ) || ( m_leftNode == null && m_rightNode == null ) ) ; if ( m_leftNode == null && m_rightNode == null ) { // End of recursion return ; } // recursive calls if ( m_leftNode instanceof BranchNode ) { ( ( BranchNode ) m_leftNode ) . toLeftJo... | Transform all RIGHT joins from the tree into the LEFT ones by swapping the nodes and their join types | 187 | 20 |
154,301 | @ Override protected void extractSubTree ( List < JoinNode > leafNodes ) { JoinNode [ ] children = { m_leftNode , m_rightNode } ; for ( JoinNode child : children ) { // Leaf nodes don't have a significant join type, // test for them first and never attempt to start a new tree at a leaf. if ( ! ( child instanceof Branch... | Starting from the root recurse to its children stopping at the first join node of the different type and discontinue the tree at this point by replacing the join node with the temporary node which id matches the join node id . This join node is the root of the next sub - tree . | 258 | 57 |
154,302 | @ Override public boolean hasOuterJoin ( ) { assert ( m_leftNode != null && m_rightNode != null ) ; return m_joinType != JoinType . INNER || m_leftNode . hasOuterJoin ( ) || m_rightNode . hasOuterJoin ( ) ; } | Returns true if one of the tree nodes has outer join | 66 | 11 |
154,303 | @ Override public void extractEphemeralTableQueries ( List < StmtEphemeralTableScan > scans ) { if ( m_leftNode != null ) { m_leftNode . extractEphemeralTableQueries ( scans ) ; } if ( m_rightNode != null ) { m_rightNode . extractEphemeralTableQueries ( scans ) ; } } | Returns a list of immediate sub - queries which are part of this query . | 81 | 15 |
154,304 | @ Override public boolean allInnerJoins ( ) { return m_joinType == JoinType . INNER && ( m_leftNode == null || m_leftNode . allInnerJoins ( ) ) && ( m_rightNode == null || m_rightNode . allInnerJoins ( ) ) ; } | Returns if all the join operations within this join tree are inner joins . | 70 | 14 |
154,305 | public static void apply ( CompiledPlan plan , DeterminismMode detMode ) { if ( detMode == DeterminismMode . FASTER ) { return ; } if ( plan . hasDeterministicStatement ( ) ) { return ; } AbstractPlanNode planGraph = plan . rootPlanGraph ; if ( planGraph . isOrderDeterministic ( ) ) { return ; } AbstractPlanNode root =... | Only applies when stronger determinism is needed . | 111 | 9 |
154,306 | public void updateLastSeenUniqueIds ( VoltMessage message ) { long sequenceWithUniqueId = Long . MIN_VALUE ; boolean commandLog = ( message instanceof TransactionInfoBaseMessage && ( ( ( TransactionInfoBaseMessage ) message ) . isForReplay ( ) ) ) ; boolean sentinel = message instanceof MultiPartitionParticipantMessage... | Update last seen uniqueIds in the replay sequencer . This is used on MPI repair . | 178 | 20 |
154,307 | public void parseRestoreResultRow ( VoltTable vt ) { RestoreResultKey key = new RestoreResultKey ( ( int ) vt . getLong ( "HOST_ID" ) , ( int ) vt . getLong ( "PARTITION_ID" ) , vt . getString ( "TABLE" ) ) ; if ( containsKey ( key ) ) { get ( key ) . mergeData ( vt . getString ( "RESULT" ) . equals ( "SUCCESS" ) , vt ... | Parse a restore result table row and add to the set . | 206 | 13 |
154,308 | public static < E extends Comparable > int binarySearch ( List < ? extends E > list , E e , KeyPresentBehavior presentBehavior , KeyAbsentBehavior absentBehavior ) { checkNotNull ( e ) ; return binarySearch ( list , e , Ordering . natural ( ) , presentBehavior , absentBehavior ) ; } | Searches the specified naturally ordered list for the specified object using the binary search algorithm . | 73 | 18 |
154,309 | private final < T > ImmutableList < Callable < T > > wrapTasks ( Collection < ? extends Callable < T > > tasks ) { ImmutableList . Builder < Callable < T >> builder = ImmutableList . builder ( ) ; for ( Callable < T > task : tasks ) { builder . add ( wrapTask ( task ) ) ; } return builder . build ( ) ; } | Wraps a collection of tasks . | 85 | 7 |
154,310 | public void loadProcedures ( CatalogContext catalogContext , boolean isInitOrReplay ) { m_defaultProcManager = catalogContext . m_defaultProcs ; // default proc caches clear on catalog update m_defaultProcCache . clear ( ) ; m_plannerTool = catalogContext . m_ptool ; // reload all system procedures from beginning m_sys... | Load procedures . | 236 | 3 |
154,311 | private static SQLPatternPart makeInnerProcedureModifierClausePattern ( boolean captureTokens ) { return SPF . oneOf ( SPF . clause ( SPF . token ( "allow" ) , SPF . group ( captureTokens , SPF . commaList ( SPF . userName ( ) ) ) ) , SPF . clause ( SPF . token ( "partition" ) , SPF . token ( "on" ) , SPF . token ( "ta... | Build a pattern segment to accept a single optional ALLOW or PARTITION clause to modify CREATE PROCEDURE statements . | 329 | 24 |
154,312 | static SQLPatternPart unparsedProcedureModifierClauses ( ) { // Force the leading space to go inside the repeat block. return SPF . capture ( SPF . repeat ( makeInnerProcedureModifierClausePattern ( false ) ) ) . withFlags ( SQLPatternFactory . ADD_LEADING_SPACE_TO_CHILD ) ; } | Build a pattern segment to recognize all the ALLOW or PARTITION modifier clauses of a CREATE PROCEDURE statement . | 80 | 24 |
154,313 | private static SQLPatternPart makeInnerStreamModifierClausePattern ( boolean captureTokens ) { return SPF . oneOf ( SPF . clause ( SPF . token ( "export" ) , SPF . token ( "to" ) , SPF . token ( "target" ) , SPF . group ( captureTokens , SPF . databaseObjectName ( ) ) ) , SPF . clause ( SPF . token ( "partition" ) , SP... | Build a pattern segment to accept a single optional EXPORT or PARTITION clause to modify CREATE STREAM statements . | 138 | 23 |
154,314 | private static SQLPatternPart unparsedStreamModifierClauses ( ) { // Force the leading space to go inside the repeat block. return SPF . capture ( SPF . repeat ( makeInnerStreamModifierClausePattern ( false ) ) ) . withFlags ( SQLPatternFactory . ADD_LEADING_SPACE_TO_CHILD ) ; } | Build a pattern segment to recognize all the EXPORT or PARTITION modifier clauses of a CREATE STREAM statement . | 77 | 23 |
154,315 | private static List < String > parseExecParameters ( String paramText ) { final String SafeParamStringValuePattern = "#(SQL_PARSER_SAFE_PARAMSTRING)" ; // Find all quoted strings. // Mask out strings that contain whitespace or commas // that must not be confused with parameter separators. // "Safe" strings that don't c... | to the extent that comments are supported they have already been stripped out . | 600 | 14 |
154,316 | public static ParseRecallResults parseRecallStatement ( String statement , int lineMax ) { Matcher matcher = RecallToken . matcher ( statement ) ; if ( matcher . matches ( ) ) { String commandWordTerminator = matcher . group ( 1 ) ; String lineNumberText = matcher . group ( 2 ) ; String error ; if ( OneWhitespace . mat... | Parse RECALL statement for sqlcmd . | 365 | 9 |
154,317 | public static List < FileInfo > parseFileStatement ( FileInfo parentContext , String statement ) { Matcher fileMatcher = FileToken . matcher ( statement ) ; if ( ! fileMatcher . lookingAt ( ) ) { // This input does not start with FILE, // so it's not a file command, it's something else. // Return to caller a null and n... | Parse FILE statement for sqlcmd . | 761 | 8 |
154,318 | public static String parseShowStatementSubcommand ( String statement ) { Matcher matcher = ShowToken . matcher ( statement ) ; if ( matcher . matches ( ) ) { String commandWordTerminator = matcher . group ( 1 ) ; if ( OneWhitespace . matcher ( commandWordTerminator ) . matches ( ) ) { String trailings = matcher . group... | Parse a SHOW or LIST statement for sqlcmd . | 224 | 11 |
154,319 | public static String parseHelpStatement ( String statement ) { Matcher matcher = HelpToken . matcher ( statement ) ; if ( matcher . matches ( ) ) { String commandWordTerminator = matcher . group ( 1 ) ; if ( OneWhitespace . matcher ( commandWordTerminator ) . matches ( ) ) { String trailings = matcher . group ( 3 ) + "... | Parse HELP statement for sqlcmd . The sub - command will be if the user just typed HELP . | 232 | 21 |
154,320 | public static String getDigitsFromHexLiteral ( String paramString ) { Matcher matcher = SingleQuotedHexLiteral . matcher ( paramString ) ; if ( matcher . matches ( ) ) { return matcher . group ( 1 ) ; } return null ; } | Given a parameter string if it s of the form x 0123456789ABCDEF return a string containing just the digits . Otherwise return null . | 63 | 30 |
154,321 | public static long hexDigitsToLong ( String hexDigits ) throws SQLParser . Exception { // BigInteger.longValue() will truncate to the lowest 64 bits, // so we need to explicitly check if there's too many digits. if ( hexDigits . length ( ) > 16 ) { throw new SQLParser . Exception ( "Too many hexadecimal digits for BIGI... | Given a string of hex digits produce a long value assuming a 2 s complement representation . | 227 | 17 |
154,322 | public static ExecuteCallResults parseExecuteCall ( String statement , Map < String , Map < Integer , List < String > > > procedures ) throws SQLParser . Exception { assert ( procedures != null ) ; return parseExecuteCallInternal ( statement , procedures ) ; } | Parse EXECUTE procedure call . | 56 | 8 |
154,323 | private static ExecuteCallResults parseExecuteCallInternal ( String statement , Map < String , Map < Integer , List < String > > > procedures ) throws SQLParser . Exception { Matcher matcher = ExecuteCallPreamble . matcher ( statement ) ; if ( ! matcher . lookingAt ( ) ) { return null ; } String commandWordTerminator =... | Private implementation of parse EXECUTE procedure call . Also supports short - circuiting procedure lookup for testing . | 490 | 22 |
154,324 | public static boolean appearsToBeValidDDLBatch ( String batch ) { BufferedReader reader = new BufferedReader ( new StringReader ( batch ) ) ; String line ; try { while ( ( line = reader . readLine ( ) ) != null ) { if ( isWholeLineComment ( line ) ) { continue ; } line = line . trim ( ) ; if ( line . equals ( "" ) ) co... | Make sure that the batch starts with an appropriate DDL verb . We do not look further than the first token of the first non - comment and non - whitespace line . | 156 | 35 |
154,325 | public static String parseEchoStatement ( String statement ) { Matcher matcher = EchoToken . matcher ( statement ) ; if ( matcher . matches ( ) ) { String commandWordTerminator = matcher . group ( 1 ) ; if ( OneWhitespace . matcher ( commandWordTerminator ) . matches ( ) ) { return matcher . group ( 2 ) ; } return "" ;... | Parse ECHO statement for sqlcmd . The result will be if the user just typed ECHO . | 89 | 21 |
154,326 | public static String parseEchoErrorStatement ( String statement ) { Matcher matcher = EchoErrorToken . matcher ( statement ) ; if ( matcher . matches ( ) ) { String commandWordTerminator = matcher . group ( 1 ) ; if ( OneWhitespace . matcher ( commandWordTerminator ) . matches ( ) ) { return matcher . group ( 2 ) ; } r... | Parse ECHOERROR statement for sqlcmd . The result will be if the user just typed ECHOERROR . | 91 | 23 |
154,327 | public static String parseDescribeStatement ( String statement ) { Matcher matcher = DescribeToken . matcher ( statement ) ; if ( matcher . matches ( ) ) { String commandWordTerminator = matcher . group ( 1 ) ; if ( OneWhitespace . matcher ( commandWordTerminator ) . matches ( ) ) { String trailings = matcher . group (... | Parse DESCRIBE statement for sqlcmd . The result will be if the user just typed DESCRIBE or DESC . | 224 | 28 |
154,328 | void resolveColumnRefernecesInUnionOrderBy ( ) { int orderCount = sortAndSlice . getOrderLength ( ) ; if ( orderCount == 0 ) { return ; } String [ ] unionColumnNames = getColumnNames ( ) ; for ( int i = 0 ; i < orderCount ; i ++ ) { Expression sort = ( Expression ) sortAndSlice . exprList . get ( i ) ; Expression e = s... | Only simple column reference or column position allowed | 286 | 8 |
154,329 | public void setTableColumnNames ( HashMappedList list ) { if ( resultTable != null ) { ( ( TableDerived ) resultTable ) . columnList = list ; return ; } leftQueryExpression . setTableColumnNames ( list ) ; } | Used in views after full type resolution | 54 | 7 |
154,330 | public void setAsTopLevel ( ) { if ( compileContext . getSequences ( ) . length > 0 ) { throw Error . error ( ErrorCode . X_42598 ) ; } isTopLevel = true ; setReturningResultSet ( ) ; } | Not for views . Only used on root node . | 55 | 10 |
154,331 | void setReturningResultSet ( ) { if ( unionCorresponding ) { persistenceScope = TableBase . SCOPE_SESSION ; columnMode = TableBase . COLUMNS_UNREFERENCED ; return ; } leftQueryExpression . setReturningResultSet ( ) ; } | Sets the scope to SESSION for the QueryExpression object that creates the table | 62 | 17 |
154,332 | public void schedulePeriodicStats ( ) { Runnable statsPrinter = new Runnable ( ) { @ Override public void run ( ) { printStatistics ( ) ; } } ; m_scheduler . scheduleWithFixedDelay ( statsPrinter , m_config . displayinterval , m_config . displayinterval , TimeUnit . SECONDS ) ; } | Add a task to the scheduler to print statistics to the console at regular intervals . | 82 | 17 |
154,333 | public synchronized void printResults ( ) throws Exception { ClientStats stats = m_fullStatsContext . fetch ( ) . getStats ( ) ; System . out . print ( HORIZONTAL_RULE ) ; System . out . println ( " Client Workload Statistics" ) ; System . out . println ( HORIZONTAL_RULE ) ; System . out . printf ( "Average throughput:... | Prints some summary statistics about performance . | 670 | 8 |
154,334 | private void shutdown ( ) { // Stop the stats printer, the bid generator and the nibble deleter. m_scheduler . shutdown ( ) ; try { m_scheduler . awaitTermination ( 60 , TimeUnit . SECONDS ) ; } catch ( InterruptedException e ) { e . printStackTrace ( ) ; } try { // block until all outstanding txns return m_client . dr... | Perform various tasks to end the demo cleanly . | 128 | 11 |
154,335 | private void requestAd ( ) { long deviceId = Math . abs ( m_rand . nextLong ( ) ) % AdBrokerBenchmark . NUM_DEVICES ; GeographyPointValue point = getRandomPoint ( ) ; try { m_client . callProcedure ( new NullCallback ( ) , "GetHighestBidForLocation" , deviceId , point ) ; } catch ( IOException e ) { e . printStackTrace... | Invoke the stored procedure GetHighestBidForLocation which given a random point returns the id of the bid that has the highest dollar amount . | 100 | 30 |
154,336 | public void promoteSinglePartitionInfo ( HashMap < AbstractExpression , Set < AbstractExpression > > valueEquivalence , Set < Set < AbstractExpression > > eqSets ) { assert ( getScanPartitioning ( ) != null ) ; if ( getScanPartitioning ( ) . getCountOfPartitionedTables ( ) == 0 || getScanPartitioning ( ) . requiresTwoF... | upgrade single partitioning expression to parent level add the info to equality sets and input value equivalence | 379 | 20 |
154,337 | private void updateEqualSets ( Set < AbstractExpression > values , HashMap < AbstractExpression , Set < AbstractExpression > > valueEquivalence , Set < Set < AbstractExpression > > eqSets , AbstractExpression tveKey , AbstractExpression spExpr ) { boolean hasLegacyValues = false ; if ( eqSets . contains ( values ) ) { ... | Because HashSet stored a legacy hashcode for the non - final object . | 165 | 15 |
154,338 | @ Override public boolean getIsReplicated ( ) { for ( StmtTableScan tableScan : m_subqueryStmt . allScans ( ) ) { if ( ! tableScan . getIsReplicated ( ) ) { return false ; } } return true ; } | The subquery is replicated if all tables from the FROM clause defining this subquery are replicated | 58 | 18 |
154,339 | public TupleValueExpression getOutputExpression ( int index ) { SchemaColumn schemaCol = getSchemaColumn ( index ) ; TupleValueExpression tve = new TupleValueExpression ( getTableAlias ( ) , getTableAlias ( ) , schemaCol . getColumnAlias ( ) , schemaCol . getColumnAlias ( ) , index ) ; return tve ; } | Produce a tuple value expression for a column produced by this subquery | 82 | 14 |
154,340 | static private ComparisonExpression rangeFilterFromPrefixLike ( AbstractExpression leftExpr , ExpressionType rangeComparator , String comparand ) { ConstantValueExpression cve = new ConstantValueExpression ( ) ; cve . setValueType ( VoltType . STRING ) ; cve . setValue ( comparand ) ; cve . setValueSize ( comparand . l... | Construct the upper or lower bound expression that is implied by a prefix LIKE operator given its required elements . | 112 | 20 |
154,341 | public NodeSchema resetTableName ( String tbName , String tbAlias ) { m_columns . forEach ( sc -> sc . reset ( tbName , tbAlias , sc . getColumnName ( ) , sc . getColumnAlias ( ) ) ) ; m_columnsMapHelper . forEach ( ( k , v ) -> k . reset ( tbName , tbAlias , k . getColumnName ( ) , k . getColumnAlias ( ) ) ) ; return ... | Substitute table name only for all schema columns and map entries | 109 | 13 |
154,342 | public void addColumn ( SchemaColumn column ) { int size = m_columns . size ( ) ; m_columnsMapHelper . put ( column , size ) ; m_columns . add ( column ) ; } | Add a column to this schema . | 48 | 7 |
154,343 | public SchemaColumn find ( String tableName , String tableAlias , String columnName , String columnAlias ) { SchemaColumn col = new SchemaColumn ( tableName , tableAlias , columnName , columnAlias ) ; int index = findIndexOfColumn ( col ) ; if ( index != - 1 ) { return m_columns . get ( index ) ; } return null ; } | Retrieve the SchemaColumn that matches the provided arguments . | 81 | 12 |
154,344 | void sortByTveIndex ( int fromIndex , int toIndex ) { Collections . sort ( m_columns . subList ( fromIndex , toIndex ) , TVE_IDX_COMPARE ) ; } | Sort a sub - range of the schema columns by TVE index . All elements must be TupleValueExpressions . Modification is made in - place . | 47 | 32 |
154,345 | public boolean equalsOnlyNames ( NodeSchema otherSchema ) { if ( otherSchema == null ) { return false ; } if ( otherSchema . size ( ) != size ( ) ) { return false ; } for ( int colIndex = 0 ; colIndex < size ( ) ; colIndex ++ ) { SchemaColumn col1 = otherSchema . getColumn ( colIndex ) ; SchemaColumn col2 = m_columns .... | names are the same . Don t worry about the differentiator field . | 124 | 14 |
154,346 | NodeSchema copyAndReplaceWithTVE ( ) { NodeSchema copy = new NodeSchema ( ) ; int colIndex = 0 ; for ( SchemaColumn column : m_columns ) { copy . addColumn ( column . copyAndReplaceWithTVE ( colIndex ) ) ; ++ colIndex ; } return copy ; } | Returns a copy of this NodeSchema but with all non - TVE expressions replaced with an appropriate TVE . This is used primarily when generating a node s output schema based on its childrens schema ; we want to carry the columns across but leave any non - TVE expressions behind . | 73 | 58 |
154,347 | public boolean harmonize ( NodeSchema otherSchema , String schemaKindName ) { if ( size ( ) != otherSchema . size ( ) ) { throw new PlanningErrorException ( "The " + schemaKindName + "schema and the statement output schemas have different lengths." ) ; } boolean changedSomething = false ; for ( int idx = 0 ; idx < size... | Modifies this schema such that its columns can accommodate both values of its own types and that of otherSchema . Does not modify otherSchema . | 667 | 30 |
154,348 | void set ( final long valueIteratedTo , final long valueIteratedFrom , final long countAtValueIteratedTo , final long countInThisIterationStep , final long totalCountToThisValue , final long totalValueToThisValue , final double percentile , final double percentileLevelIteratedTo , double integerToDoubleValueConversionR... | Set is all - or - nothing to avoid the potential for accidental omission of some values ... | 200 | 18 |
154,349 | @ Override public List < AbstractExpression > bindingToIndexedExpression ( AbstractExpression expr ) { if ( m_originalValue == null || ! m_originalValue . equals ( expr ) ) { return null ; } // This parameter's value was matched, so return this as one bound parameter. List < AbstractExpression > result = new ArrayList ... | query in which that constant differs . | 94 | 7 |
154,350 | Object getParameterAtIndex ( int partitionIndex ) { try { if ( serializedParams != null ) { return ParameterSet . getParameterAtIndex ( partitionIndex , serializedParams . duplicate ( ) ) ; } else { return params . get ( ) . getParam ( partitionIndex ) ; } } catch ( Exception ex ) { throw new RuntimeException ( "Invali... | Read into an serialized parameter buffer to extract a single parameter | 91 | 12 |
154,351 | public void flattenToBufferForOriginalVersion ( ByteBuffer buf ) throws IOException { assert ( ( params != null ) || ( serializedParams != null ) ) ; // for self-check assertion int startPosition = buf . position ( ) ; buf . put ( ProcedureInvocationType . ORIGINAL . getValue ( ) ) ; SerializationHelper . writeVarbinar... | Serializes this SPI in the original serialization version . This is currently used by DR . | 134 | 18 |
154,352 | @ Override public synchronized void submit ( long offset ) { if ( submittedOffset == - 1L && offset >= 0 ) { committedOffsets [ idx ( offset ) ] = safeOffset = submittedOffset = offset ; } if ( firstOffset == - 1L ) { firstOffset = offset ; } if ( ( offset - safeOffset ) >= committedOffsets . length ) { offerOffset = o... | submit an offset while consuming a message and record the maximal submitted offset | 173 | 13 |
154,353 | @ Override public synchronized long commit ( long offset ) { if ( offset <= submittedOffset && offset > safeOffset ) { int ggap = ( int ) Math . min ( committedOffsets . length , offset - safeOffset ) ; if ( ggap == committedOffsets . length ) { LOGGER . rateLimitedLog ( LOG_SUPPRESSION_INTERVAL_SECONDS , Level . WARN ... | VoltDB . It will be recorded in committedOffsets and calculate the offset - safeOffset which is safe to commit to Kafka | 274 | 26 |
154,354 | public void log ( long now , Level level , Throwable cause , String stemformat , Object ... args ) { if ( now - m_lastLogTime > m_maxLogIntervalMillis ) { synchronized ( this ) { if ( now - m_lastLogTime > m_maxLogIntervalMillis ) { String message = formatMessage ( cause , stemformat , args ) ; switch ( level ) { case ... | This variant delays the formatting of the string message until it is actually logged | 192 | 14 |
154,355 | private void sendFirstFragResponse ( ) { if ( ELASTICLOG . isDebugEnabled ( ) ) { ELASTICLOG . debug ( "P" + m_partitionId + " sending first fragment response to coordinator " + CoreUtils . hsIdToString ( m_coordinatorHsId ) ) ; } RejoinMessage msg = new RejoinMessage ( m_mailbox . getHSId ( ) , RejoinMessage . Type . ... | Notify the coordinator that this site has received the first fragment message | 137 | 13 |
154,356 | private void runForBlockingDataTransfer ( SiteProcedureConnection siteConnection ) { boolean sourcesReady = false ; RestoreWork restoreWork = m_dataSink . poll ( m_snapshotBufferAllocator ) ; if ( restoreWork != null ) { restoreBlock ( restoreWork , siteConnection ) ; sourcesReady = true ; } // The completion monitor m... | Blocking transfer all partitioned table data and notify the coordinator . | 521 | 13 |
154,357 | public < T > T getService ( URI bundleURI , Class < T > svcClazz ) { return m_bundles . getService ( bundleURI , svcClazz ) ; } | Gets the service from the given bundle jar uri . Loads and starts the bundle if it isn t yet loaded | 42 | 24 |
154,358 | public void setPos ( int pos ) { position = pos ; NodeAVL n = nPrimaryNode ; while ( n != null ) { ( ( NodeAVLDisk ) n ) . iData = position ; n = n . nNext ; } } | Sets the file position for the row | 53 | 8 |
154,359 | void setNewNodes ( ) { int indexcount = tTable . getIndexCount ( ) ; nPrimaryNode = new NodeAVLDisk ( this , 0 ) ; NodeAVL n = nPrimaryNode ; for ( int i = 1 ; i < indexcount ; i ++ ) { n . nNext = new NodeAVLDisk ( this , i ) ; n = n . nNext ; } } | used in CachedDataRow | 86 | 6 |
154,360 | public void write ( RowOutputInterface out ) { try { writeNodes ( out ) ; if ( hasDataChanged ) { out . writeData ( rowData , tTable . colTypes ) ; out . writeEnd ( ) ; hasDataChanged = false ; } } catch ( IOException e ) { } } | Used exclusively by Cache to save the row to disk . New implementation in 1 . 7 . 2 writes out only the Node data if the table row data has not changed . This situation accounts for the majority of invocations as for each row deleted or inserted the Nodes for several other rows will change . | 65 | 60 |
154,361 | private void writeNodes ( RowOutputInterface out ) throws IOException { out . writeSize ( storageSize ) ; NodeAVL n = nPrimaryNode ; while ( n != null ) { n . write ( out ) ; n = n . nNext ; } hasNodesChanged = false ; } | Writes the Nodes immediately after the row size . | 63 | 11 |
154,362 | public void serializeToBuffer ( ByteBuffer b ) { assert ( getSerializedSize ( ) <= b . remaining ( ) ) ; b . putInt ( getSerializedSize ( ) - 4 ) ; b . put ( ( byte ) getExceptionType ( ) . ordinal ( ) ) ; if ( m_message != null ) { final byte messageBytes [ ] = m_message . getBytes ( ) ; b . putInt ( messageBytes . le... | Serialize this exception to the supplied byte buffer | 129 | 9 |
154,363 | protected void populateColumnSchema ( ArrayList < ColumnInfo > columns ) { columns . add ( new ColumnInfo ( "TIMESTAMP" , VoltType . BIGINT ) ) ; columns . add ( new ColumnInfo ( VoltSystemProcedure . CNAME_HOST_ID , VoltSystemProcedure . CTYPE_ID ) ) ; columns . add ( new ColumnInfo ( "HOSTNAME" , VoltType . STRING ) ... | Called from the constructor to generate the column schema at run time . Derived classes need to override this method in order to specify the columns they will be adding . The first line must always be a call the superclasses version of populateColumnSchema in order to ensure the columns are add to the list in the right... | 97 | 66 |
154,364 | public Object [ ] [ ] getStatsRows ( boolean interval , final Long now ) { this . now = now ; /* * Synchronizing on this allows derived classes to maintain thread safety */ synchronized ( this ) { Iterator < Object > i = getStatsRowKeyIterator ( interval ) ; ArrayList < Object [ ] > rows = new ArrayList < Object [ ] > ... | Get the latest stat values as an array of arrays of objects suitable for insertion into an VoltTable | 154 | 19 |
154,365 | protected void updateStatsRow ( Object rowKey , Object rowValues [ ] ) { rowValues [ 0 ] = now ; rowValues [ 1 ] = m_hostId ; rowValues [ 2 ] = m_hostname ; } | Update the parameter array with the latest values . This is similar to populateColumnSchema in that it must be overriden by derived classes and the derived class implementation must call the super classes implementation . | 48 | 40 |
154,366 | @ Override public long deserialize ( DataTree dt , Map < Long , Long > sessions ) throws IOException { // we run through 100 snapshots (not all of them) // if we cannot get it running within 100 snapshots // we should give up List < File > snapList = findNValidSnapshots ( 100 ) ; if ( snapList . size ( ) == 0 ) { retur... | deserialize a data tree from the most recent snapshot | 429 | 11 |
154,367 | public void deserialize ( DataTree dt , Map < Long , Long > sessions , InputArchive ia ) throws IOException { FileHeader header = new FileHeader ( ) ; header . deserialize ( ia , "fileheader" ) ; if ( header . getMagic ( ) != SNAP_MAGIC ) { throw new IOException ( "mismatching magic headers " + header . getMagic ( ) + ... | deserialize the datatree from an inputarchive | 124 | 11 |
154,368 | @ Override public File findMostRecentSnapshot ( ) throws IOException { List < File > files = findNValidSnapshots ( 1 ) ; if ( files . size ( ) == 0 ) { return null ; } return files . get ( 0 ) ; } | find the most recent snapshot in the database . | 55 | 9 |
154,369 | public List < File > findNRecentSnapshots ( int n ) throws IOException { List < File > files = Util . sortDataDir ( snapDir . listFiles ( ) , "snapshot" , false ) ; int i = 0 ; List < File > list = new ArrayList < File > ( ) ; for ( File f : files ) { if ( i == n ) break ; i ++ ; list . add ( f ) ; } return list ; } | find the last n snapshots . this does not have any checks if the snapshot might be valid or not | 98 | 20 |
154,370 | protected void serialize ( DataTree dt , Map < Long , Long > sessions , OutputArchive oa , FileHeader header ) throws IOException { // this is really a programmatic error and not something that can // happen at runtime if ( header == null ) throw new IllegalStateException ( "Snapshot's not open for writing: uninitializ... | serialize the datatree and sessions | 110 | 8 |
154,371 | @ Override public synchronized void serialize ( DataTree dt , Map < Long , Long > sessions , File snapShot ) throws IOException { if ( ! close ) { OutputStream sessOS = new BufferedOutputStream ( new FileOutputStream ( snapShot ) ) ; CheckedOutputStream crcOut = new CheckedOutputStream ( sessOS , new Adler32 ( ) ) ; //... | serialize the datatree and session into the file snapshot | 223 | 12 |
154,372 | public static Datum sampleSystemNow ( final boolean medium , final boolean large ) { Datum d = generateCurrentSample ( ) ; if ( d == null ) return null ; historyS . addLast ( d ) ; if ( historyS . size ( ) > historySize ) historyS . removeFirst ( ) ; if ( medium ) { historyM . addLast ( d ) ; if ( historyM . size ( ) >... | Synchronously collect memory stats . | 139 | 7 |
154,373 | public static synchronized void asyncSampleSystemNow ( final boolean medium , final boolean large ) { // slow mode starts an async thread if ( mode == GetRSSMode . PS ) { if ( thread != null ) { if ( thread . isAlive ( ) ) return ; else thread = null ; } thread = new Thread ( new Runnable ( ) { @ Override public void r... | Fire off a thread to asynchronously collect stats . | 124 | 11 |
154,374 | private static synchronized void initialize ( ) { PlatformProperties pp = PlatformProperties . getPlatformProperties ( ) ; String processName = java . lang . management . ManagementFactory . getRuntimeMXBean ( ) . getName ( ) ; String pidString = processName . substring ( 0 , processName . indexOf ( ' ' ) ) ; pid = Int... | Get the process id the total memory size and determine the best way to get the RSS on an ongoing basis . | 415 | 22 |
154,375 | private static long getRSSFromProcFS ( ) { try { File statFile = new File ( String . format ( "/proc/%d/stat" , pid ) ) ; FileInputStream fis = new FileInputStream ( statFile ) ; try { BufferedReader r = new BufferedReader ( new InputStreamReader ( fis ) ) ; String stats = r . readLine ( ) ; String [ ] parts = stats . ... | Get the RSS using the procfs . If procfs is not around this will return - 1 ; | 139 | 20 |
154,376 | private static synchronized Datum generateCurrentSample ( ) { // Code used to fake system statistics by tests if ( testStatsProducer != null ) { return testStatsProducer . getCurrentStatsData ( ) ; } // get this info once if ( ! initialized ) initialize ( ) ; long rss = - 1 ; switch ( mode ) { case MACOSX_NATIVE : rss ... | Poll the operating system and generate a Datum | 161 | 9 |
154,377 | public static synchronized String getGoogleChartURL ( int minutes , int width , int height , String timeLabel ) { ArrayDeque < Datum > history = historyS ; if ( minutes > 2 ) history = historyM ; if ( minutes > 30 ) history = historyL ; HTMLChartHelper chart = new HTMLChartHelper ( ) ; chart . width = width ; chart . h... | Get a URL that uses the Google Charts API to show a chart of memory usage history . | 539 | 19 |
154,378 | public static void main ( String [ ] args ) { int repeat = 1000 ; long start , duration , correct ; double per ; String processName = java . lang . management . ManagementFactory . getRuntimeMXBean ( ) . getName ( ) ; String pidString = processName . substring ( 0 , processName . indexOf ( ' ' ) ) ; pid = Integer . val... | Manual performance testing code for getting stats . | 485 | 9 |
154,379 | void rollbackPartial ( Session session , int start , long timestamp ) { Object [ ] list = session . rowActionList . getArray ( ) ; int limit = session . rowActionList . size ( ) ; if ( start == limit ) { return ; } for ( int i = start ; i < limit ; i ++ ) { RowAction action = ( RowAction ) list [ i ] ; if ( action != n... | rollback the row actions from start index in list and the given timestamp | 199 | 14 |
154,380 | public boolean canRead ( Session session , Row row ) { synchronized ( row ) { RowAction action = row . rowAction ; if ( action == null ) { return true ; } return action . canRead ( session ) ; } } | functional unit - accessibility of rows | 48 | 6 |
154,381 | public void setTransactionInfo ( CachedObject object ) { Row row = ( Row ) object ; if ( row . rowAction != null ) { return ; } RowAction rowact = ( RowAction ) rowActionMap . get ( row . position ) ; row . rowAction = rowact ; } | add transaction info to a row just loaded from the cache . called only for CACHED tables | 62 | 19 |
154,382 | void mergeRolledBackTransaction ( Object [ ] list , int start , int limit ) { for ( int i = start ; i < limit ; i ++ ) { RowAction rowact = ( RowAction ) list [ i ] ; if ( rowact == null || rowact . type == RowActionBase . ACTION_NONE || rowact . type == RowActionBase . ACTION_DELETE_FINAL ) { continue ; } Row row = ro... | merge a given list of transaction rollback action with given timestamp | 209 | 13 |
154,383 | void addToCommittedQueue ( Session session , Object [ ] list ) { synchronized ( committedTransactionTimestamps ) { // add the txList according to commit timestamp committedTransactions . addLast ( list ) ; // get session commit timestamp committedTransactionTimestamps . addLast ( session . actionTimestamp ) ; /* debug ... | add a list of actions to the end of queue | 100 | 10 |
154,384 | void mergeExpiredTransactions ( Session session ) { long timestamp = getFirstLiveTransactionTimestamp ( ) ; while ( true ) { long commitTimestamp = 0 ; Object [ ] actions = null ; synchronized ( committedTransactionTimestamps ) { if ( committedTransactionTimestamps . isEmpty ( ) ) { break ; } commitTimestamp = committe... | expire all committed transactions that are no longer in scope | 163 | 11 |
154,385 | void endTransaction ( Session session ) { try { writeLock . lock ( ) ; long timestamp = session . transactionTimestamp ; synchronized ( liveTransactionTimestamps ) { session . isTransaction = false ; int index = liveTransactionTimestamps . indexOf ( timestamp ) ; liveTransactionTimestamps . remove ( index ) ; } mergeEx... | remove session from queue when a transaction ends and expire any committed transactions that are no longer required . remove transactions ended before the first timestamp in liveTransactionsSession queue | 90 | 32 |
154,386 | RowAction [ ] getRowActionList ( ) { try { writeLock . lock ( ) ; Session [ ] sessions = database . sessionManager . getAllSessions ( ) ; int [ ] tIndex = new int [ sessions . length ] ; RowAction [ ] rowActions ; int rowActionCount = 0 ; { int actioncount = 0 ; for ( int i = 0 ; i < sessions . length ; i ++ ) { action... | Return an array of all row actions sorted by System Change No . | 418 | 13 |
154,387 | public DoubleIntIndex getTransactionIDList ( ) { writeLock . lock ( ) ; try { DoubleIntIndex lookup = new DoubleIntIndex ( 10 , false ) ; lookup . setKeysSearchTarget ( ) ; Iterator it = this . rowActionMap . keySet ( ) . iterator ( ) ; for ( ; it . hasNext ( ) ; ) { lookup . addUnique ( it . nextInt ( ) , 0 ) ; } retu... | Return a lookup of all row ids for cached tables in transactions . For auto - defrag as currently there will be no RowAction entries at the time of defrag . | 106 | 35 |
154,388 | public void convertTransactionIDs ( DoubleIntIndex lookup ) { writeLock . lock ( ) ; try { RowAction [ ] list = new RowAction [ rowActionMap . size ( ) ] ; Iterator it = this . rowActionMap . values ( ) . iterator ( ) ; for ( int i = 0 ; it . hasNext ( ) ; i ++ ) { list [ i ] = ( RowAction ) it . next ( ) ; } rowAction... | Convert row ID s for cached table rows in transactions | 176 | 11 |
154,389 | @ Override protected VoltMessage instantiate_local ( byte messageType ) { // instantiate a new message instance according to the id VoltMessage message = null ; switch ( messageType ) { case INITIATE_TASK_ID : message = new InitiateTaskMessage ( ) ; break ; case INITIATE_RESPONSE_ID : message = new InitiateResponseMess... | Overridden by subclasses to create message types unknown by voltcore | 820 | 13 |
154,390 | void clearStructures ( ) { if ( schemaManager != null ) { schemaManager . clearStructures ( ) ; } granteeManager = null ; userManager = null ; nameManager = null ; schemaManager = null ; sessionManager = null ; dbInfo = null ; } | Clears the data structuress making them elligible for garbage collection . | 57 | 15 |
154,391 | public Result getScript ( boolean indexRoots ) { Result r = Result . newSingleColumnResult ( "COMMAND" , Type . SQL_VARCHAR ) ; String [ ] list = getSettingsSQL ( ) ; addRows ( r , list ) ; list = getGranteeManager ( ) . getSQL ( ) ; addRows ( r , list ) ; // schemas and schema objects such as tables, sequences, etc. l... | Returns the schema and authorisation statements for the database . | 228 | 11 |
154,392 | private Expression readWindowSpecification ( int tokenT , Expression aggExpr ) { SortAndSlice sortAndSlice = null ; readThis ( Tokens . OPENBRACKET ) ; List < Expression > partitionByList = new ArrayList <> ( ) ; if ( token . tokenType == Tokens . PARTITION ) { read ( ) ; readThis ( Tokens . BY ) ; while ( true ) { Exp... | This is a minimal parsing of the Window Specification . We only use partition by and order by lists . There is a lot of complexity in the full SQL specification which we don t parse at all . | 366 | 40 |
154,393 | private ExpressionLogical XStartsWithPredicateRightPart ( Expression left ) { readThis ( Tokens . WITH ) ; if ( token . tokenType == Tokens . QUESTION ) { // handle user parameter case Expression right = XreadRowValuePredicand ( ) ; if ( left . isParam ( ) && right . isParam ( ) ) { // again make sure the left side is ... | Scan the right - side string value return a STARTS WITH Expression for generating XML | 291 | 16 |
154,394 | Expression XreadRowValueConstructor ( ) { Expression e ; e = XreadExplicitRowValueConstructorOrNull ( ) ; if ( e != null ) { return e ; } e = XreadRowOrCommonValueExpression ( ) ; if ( e != null ) { return e ; } return XreadBooleanValueExpression ( ) ; } | ISSUE - XreadCommonValueExpression and XreadBooleanValueExpression should merge | 76 | 19 |
154,395 | Expression XreadExplicitRowValueConstructorOrNull ( ) { Expression e ; switch ( token . tokenType ) { case Tokens . OPENBRACKET : { read ( ) ; int position = getPosition ( ) ; int brackets = readOpenBrackets ( ) ; switch ( token . tokenType ) { case Tokens . TABLE : case Tokens . VALUES : case Tokens . SELECT : rewind ... | must be called in conjusnction with <parenthesized .. | 231 | 14 |
154,396 | private Expression readCaseWhen ( final Expression l ) { readThis ( Tokens . WHEN ) ; Expression condition = null ; if ( l == null ) { condition = XreadBooleanValueExpression ( ) ; } else { while ( true ) { Expression newCondition = XreadPredicateRightPart ( l ) ; if ( l == newCondition ) { newCondition = new Expressio... | Reads part of a CASE .. WHEN expression | 345 | 9 |
154,397 | private Expression readCaseWhenExpression ( ) { Expression l = null ; read ( ) ; readThis ( Tokens . OPENBRACKET ) ; l = XreadBooleanValueExpression ( ) ; readThis ( Tokens . COMMA ) ; Expression thenelse = XreadRowValueExpression ( ) ; readThis ( Tokens . COMMA ) ; thenelse = new ExpressionOp ( OpTypes . ALTERNATIVE ,... | reads a CASEWHEN expression | 135 | 7 |
154,398 | private Expression readCastExpression ( ) { boolean isConvert = token . tokenType == Tokens . CONVERT ; read ( ) ; readThis ( Tokens . OPENBRACKET ) ; Expression l = this . XreadValueExpressionOrNull ( ) ; if ( isConvert ) { readThis ( Tokens . COMMA ) ; } else { readThis ( Tokens . AS ) ; } Type typeObject = readTypeD... | Reads a CAST or CONVERT expression | 144 | 9 |
154,399 | private Expression readNullIfExpression ( ) { // turn into a CASEWHEN read ( ) ; readThis ( Tokens . OPENBRACKET ) ; Expression c = XreadValueExpression ( ) ; readThis ( Tokens . COMMA ) ; Expression thenelse = new ExpressionOp ( OpTypes . ALTERNATIVE , new ExpressionValue ( ( Object ) null , ( Type ) null ) , c ) ; c ... | Reads a NULLIF expression | 140 | 6 |
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