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246,800 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | make_type_replacement_visitor | def make_type_replacement_visitor(find_types, replacement_func):
"""Return a visitor function that replaces expressions of a given type with new expressions."""
def visitor_fn(expression):
"""Return a replacement expression if the original expression is of the correct type."""
if isinstance(expr... | python | def make_type_replacement_visitor(find_types, replacement_func):
def visitor_fn(expression):
"""Return a replacement expression if the original expression is of the correct type."""
if isinstance(expression, find_types):
return replacement_func(expression)
else:
retur... | [
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246,801 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | _validate_operator_name | def _validate_operator_name(operator, supported_operators):
"""Ensure the named operator is valid and supported."""
if not isinstance(operator, six.text_type):
raise TypeError(u'Expected operator as unicode string, got: {} {}'.format(
type(operator).__name__, operator))
if operator not ... | python | def _validate_operator_name(operator, supported_operators):
if not isinstance(operator, six.text_type):
raise TypeError(u'Expected operator as unicode string, got: {} {}'.format(
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246,802 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | Literal.validate | def validate(self):
"""Validate that the Literal is correctly representable."""
# Literals representing boolean values or None are correctly representable and supported.
if self.value is None or self.value is True or self.value is False:
return
# Literal safe strings are cor... | python | def validate(self):
# Literals representing boolean values or None are correctly representable and supported.
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# Literal safe strings are correctly representable and supported.
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246,803 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | Variable.validate | def validate(self):
"""Validate that the Variable is correctly representable."""
# Get the first letter, or empty string if it doesn't exist.
if not self.variable_name.startswith(u'$'):
raise GraphQLCompilationError(u'Expected variable name to start with $, but was: '
... | python | def validate(self):
# Get the first letter, or empty string if it doesn't exist.
if not self.variable_name.startswith(u'$'):
raise GraphQLCompilationError(u'Expected variable name to start with $, but was: '
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246,804 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | Variable.to_match | def to_match(self):
"""Return a unicode object with the MATCH representation of this Variable."""
self.validate()
# We don't want the dollar sign as part of the variable name.
variable_with_no_dollar_sign = self.variable_name[1:]
match_variable_name = '{%s}' % (six.text_type(va... | python | def to_match(self):
self.validate()
# We don't want the dollar sign as part of the variable name.
variable_with_no_dollar_sign = self.variable_name[1:]
match_variable_name = '{%s}' % (six.text_type(variable_with_no_dollar_sign),)
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246,805 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | GlobalContextField.validate | def validate(self):
"""Validate that the GlobalContextField is correctly representable."""
if not isinstance(self.location, Location):
raise TypeError(u'Expected Location location, got: {} {}'
.format(type(self.location).__name__, self.location))
if self.... | python | def validate(self):
if not isinstance(self.location, Location):
raise TypeError(u'Expected Location location, got: {} {}'
.format(type(self.location).__name__, self.location))
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246,806 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | GlobalContextField.to_match | def to_match(self):
"""Return a unicode object with the MATCH representation of this GlobalContextField."""
self.validate()
mark_name, field_name = self.location.get_location_name()
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validate_safe_string(field_name)
return u'%s.%s' % (mark... | python | def to_match(self):
self.validate()
mark_name, field_name = self.location.get_location_name()
validate_safe_string(mark_name)
validate_safe_string(field_name)
return u'%s.%s' % (mark_name, field_name) | [
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246,807 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | ContextField.to_match | def to_match(self):
"""Return a unicode object with the MATCH representation of this ContextField."""
self.validate()
mark_name, field_name = self.location.get_location_name()
validate_safe_string(mark_name)
if field_name is None:
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self.validate()
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246,808 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | OutputContextField.validate | def validate(self):
"""Validate that the OutputContextField is correctly representable."""
if not isinstance(self.location, Location):
raise TypeError(u'Expected Location location, got: {} {}'.format(
type(self.location).__name__, self.location))
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246,809 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | FoldedContextField.validate | def validate(self):
"""Validate that the FoldedContextField is correctly representable."""
if not isinstance(self.fold_scope_location, FoldScopeLocation):
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type(self.fold_scope_location), self.fold_scope_location))
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246,810 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | FoldCountContextField.validate | def validate(self):
"""Validate that the FoldCountContextField is correctly representable."""
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246,811 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | ContextFieldExistence.validate | def validate(self):
"""Validate that the ContextFieldExistence is correctly representable."""
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246,812 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | UnaryTransformation.validate | def validate(self):
"""Validate that the UnaryTransformation is correctly representable."""
_validate_operator_name(self.operator, UnaryTransformation.SUPPORTED_OPERATORS)
if not isinstance(self.inner_expression, Expression):
raise TypeError(u'Expected Expression inner_expression, g... | python | def validate(self):
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246,813 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | UnaryTransformation.to_match | def to_match(self):
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self.validate()
translation_table = {
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match_operator = translation_table.get(self.operator)
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r... | python | def to_match(self):
self.validate()
translation_table = {
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246,814 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | BinaryComposition.validate | def validate(self):
"""Validate that the BinaryComposition is correctly representable."""
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if not isinstance(self.left, Expression):
raise TypeError(u'Expected Expression left, got: {} {} {}'.format(
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_validate_operator_name(self.operator, BinaryComposition.SUPPORTED_OPERATORS)
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246,815 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | BinaryComposition.to_match | def to_match(self):
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] | f6079c6d10f64932f6b3af309b79bcea2123ca8f | https://github.com/kensho-technologies/graphql-compiler/blob/f6079c6d10f64932f6b3af309b79bcea2123ca8f/graphql_compiler/compiler/expressions.py#L791-L836 |
246,816 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | TernaryConditional.validate | def validate(self):
"""Validate that the TernaryConditional is correctly representable."""
if not isinstance(self.predicate, Expression):
raise TypeError(u'Expected Expression predicate, got: {} {}'.format(
type(self.predicate).__name__, self.predicate))
if not isinst... | python | def validate(self):
if not isinstance(self.predicate, Expression):
raise TypeError(u'Expected Expression predicate, got: {} {}'.format(
type(self.predicate).__name__, self.predicate))
if not isinstance(self.if_true, Expression):
raise TypeError(u'Expected Expressi... | [
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246,817 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/expressions.py | TernaryConditional.to_match | def to_match(self):
"""Return a unicode object with the MATCH representation of this TernaryConditional."""
self.validate()
# For MATCH, an additional validation step is needed -- we currently do not support
# emitting MATCH code for TernaryConditional that contains another TernaryCondi... | python | def to_match(self):
self.validate()
# For MATCH, an additional validation step is needed -- we currently do not support
# emitting MATCH code for TernaryConditional that contains another TernaryConditional
# anywhere within the predicate expression. This is because the predicate express... | [
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246,818 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_sanity_checks.py | sanity_check_ir_blocks_from_frontend | def sanity_check_ir_blocks_from_frontend(ir_blocks, query_metadata_table):
"""Assert that IR blocks originating from the frontend do not have nonsensical structure.
Args:
ir_blocks: list of BasicBlocks representing the IR to sanity-check
Raises:
AssertionError, if the IR has unexpected str... | python | def sanity_check_ir_blocks_from_frontend(ir_blocks, query_metadata_table):
if not ir_blocks:
raise AssertionError(u'Received no ir_blocks: {}'.format(ir_blocks))
_sanity_check_fold_scope_locations_are_unique(ir_blocks)
_sanity_check_no_nested_folds(ir_blocks)
_sanity_check_query_root_block(ir_b... | [
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246,819 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_sanity_checks.py | _sanity_check_registered_locations_parent_locations | def _sanity_check_registered_locations_parent_locations(query_metadata_table):
"""Assert that all registered locations' parent locations are also registered."""
for location, location_info in query_metadata_table.registered_locations:
if (location != query_metadata_table.root_location and
... | python | def _sanity_check_registered_locations_parent_locations(query_metadata_table):
for location, location_info in query_metadata_table.registered_locations:
if (location != query_metadata_table.root_location and
not query_metadata_table.root_location.is_revisited_at(location)):
# If ... | [
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246,820 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_sanity_checks.py | _sanity_check_all_marked_locations_are_registered | def _sanity_check_all_marked_locations_are_registered(ir_blocks, query_metadata_table):
"""Assert that all locations in MarkLocation blocks have registered and valid metadata."""
# Grab all the registered locations, then make sure that:
# - Any location that appears in a MarkLocation block is also registere... | python | def _sanity_check_all_marked_locations_are_registered(ir_blocks, query_metadata_table):
# Grab all the registered locations, then make sure that:
# - Any location that appears in a MarkLocation block is also registered.
# - There are no registered locations that do not appear in a MarkLocation block.
re... | [
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246,821 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_sanity_checks.py | _sanity_check_fold_scope_locations_are_unique | def _sanity_check_fold_scope_locations_are_unique(ir_blocks):
"""Assert that every FoldScopeLocation that exists on a Fold block is unique."""
observed_locations = dict()
for block in ir_blocks:
if isinstance(block, Fold):
alternate = observed_locations.get(block.fold_scope_location, Non... | python | def _sanity_check_fold_scope_locations_are_unique(ir_blocks):
observed_locations = dict()
for block in ir_blocks:
if isinstance(block, Fold):
alternate = observed_locations.get(block.fold_scope_location, None)
if alternate is not None:
raise AssertionError(u'Found... | [
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246,822 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_sanity_checks.py | _sanity_check_no_nested_folds | def _sanity_check_no_nested_folds(ir_blocks):
"""Assert that there are no nested Fold contexts, and that every Fold has a matching Unfold."""
fold_seen = False
for block in ir_blocks:
if isinstance(block, Fold):
if fold_seen:
raise AssertionError(u'Found a nested Fold con... | python | def _sanity_check_no_nested_folds(ir_blocks):
fold_seen = False
for block in ir_blocks:
if isinstance(block, Fold):
if fold_seen:
raise AssertionError(u'Found a nested Fold contexts: {}'.format(ir_blocks))
else:
fold_seen = True
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246,823 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_sanity_checks.py | _sanity_check_query_root_block | def _sanity_check_query_root_block(ir_blocks):
"""Assert that QueryRoot is always the first block, and only the first block."""
if not isinstance(ir_blocks[0], QueryRoot):
raise AssertionError(u'The first block was not QueryRoot: {}'.format(ir_blocks))
for block in ir_blocks[1:]:
if isinstan... | python | def _sanity_check_query_root_block(ir_blocks):
if not isinstance(ir_blocks[0], QueryRoot):
raise AssertionError(u'The first block was not QueryRoot: {}'.format(ir_blocks))
for block in ir_blocks[1:]:
if isinstance(block, QueryRoot):
raise AssertionError(u'Found QueryRoot after the fi... | [
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246,824 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_sanity_checks.py | _sanity_check_construct_result_block | def _sanity_check_construct_result_block(ir_blocks):
"""Assert that ConstructResult is always the last block, and only the last block."""
if not isinstance(ir_blocks[-1], ConstructResult):
raise AssertionError(u'The last block was not ConstructResult: {}'.format(ir_blocks))
for block in ir_blocks[:-... | python | def _sanity_check_construct_result_block(ir_blocks):
if not isinstance(ir_blocks[-1], ConstructResult):
raise AssertionError(u'The last block was not ConstructResult: {}'.format(ir_blocks))
for block in ir_blocks[:-1]:
if isinstance(block, ConstructResult):
raise AssertionError(u'Fou... | [
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246,825 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_sanity_checks.py | _sanity_check_block_pairwise_constraints | def _sanity_check_block_pairwise_constraints(ir_blocks):
"""Assert that adjacent blocks obey all invariants."""
for first_block, second_block in pairwise(ir_blocks):
# Always Filter before MarkLocation, never after.
if isinstance(first_block, MarkLocation) and isinstance(second_block, Filter):
... | python | def _sanity_check_block_pairwise_constraints(ir_blocks):
for first_block, second_block in pairwise(ir_blocks):
# Always Filter before MarkLocation, never after.
if isinstance(first_block, MarkLocation) and isinstance(second_block, Filter):
raise AssertionError(u'Found Filter after MarkLo... | [
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246,826 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_sanity_checks.py | _sanity_check_mark_location_preceding_optional_traverse | def _sanity_check_mark_location_preceding_optional_traverse(ir_blocks):
"""Assert that optional Traverse blocks are preceded by a MarkLocation."""
# Once all fold blocks are removed, each optional Traverse must have
# a MarkLocation block immediately before it.
_, new_ir_blocks = extract_folds_from_ir_b... | python | def _sanity_check_mark_location_preceding_optional_traverse(ir_blocks):
# Once all fold blocks are removed, each optional Traverse must have
# a MarkLocation block immediately before it.
_, new_ir_blocks = extract_folds_from_ir_blocks(ir_blocks)
for first_block, second_block in pairwise(new_ir_blocks):
... | [
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246,827 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_sanity_checks.py | _sanity_check_every_location_is_marked | def _sanity_check_every_location_is_marked(ir_blocks):
"""Ensure that every new location is marked with a MarkLocation block."""
# Exactly one MarkLocation block is found between any block that starts an interval of blocks
# that all affect the same query position, and the first subsequent block that affect... | python | def _sanity_check_every_location_is_marked(ir_blocks):
# Exactly one MarkLocation block is found between any block that starts an interval of blocks
# that all affect the same query position, and the first subsequent block that affects a
# different position in the query. Such intervals include the followin... | [
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246,828 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_sanity_checks.py | _sanity_check_coerce_type_outside_of_fold | def _sanity_check_coerce_type_outside_of_fold(ir_blocks):
"""Ensure that CoerceType not in a @fold are followed by a MarkLocation or Filter block."""
is_in_fold = False
for first_block, second_block in pairwise(ir_blocks):
if isinstance(first_block, Fold):
is_in_fold = True
if n... | python | def _sanity_check_coerce_type_outside_of_fold(ir_blocks):
is_in_fold = False
for first_block, second_block in pairwise(ir_blocks):
if isinstance(first_block, Fold):
is_in_fold = True
if not is_in_fold and isinstance(first_block, CoerceType):
if not isinstance(second_bloc... | [
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246,829 | kensho-technologies/graphql-compiler | graphql_compiler/schema_generation/schema_properties.py | validate_supported_property_type_id | def validate_supported_property_type_id(property_name, property_type_id):
"""Ensure that the given property type_id is supported by the graph."""
if property_type_id not in PROPERTY_TYPE_ID_TO_NAME:
raise AssertionError(u'Property "{}" has unsupported property type id: '
u'{... | python | def validate_supported_property_type_id(property_name, property_type_id):
if property_type_id not in PROPERTY_TYPE_ID_TO_NAME:
raise AssertionError(u'Property "{}" has unsupported property type id: '
u'{}'.format(property_name, property_type_id)) | [
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246,830 | kensho-technologies/graphql-compiler | graphql_compiler/schema_generation/schema_properties.py | _parse_bool_default_value | def _parse_bool_default_value(property_name, default_value_string):
"""Parse and return the default value for a boolean property."""
lowercased_value_string = default_value_string.lower()
if lowercased_value_string in {'0', 'false'}:
return False
elif lowercased_value_string in {'1', 'true'}:
... | python | def _parse_bool_default_value(property_name, default_value_string):
lowercased_value_string = default_value_string.lower()
if lowercased_value_string in {'0', 'false'}:
return False
elif lowercased_value_string in {'1', 'true'}:
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] | f6079c6d10f64932f6b3af309b79bcea2123ca8f | https://github.com/kensho-technologies/graphql-compiler/blob/f6079c6d10f64932f6b3af309b79bcea2123ca8f/graphql_compiler/schema_generation/schema_properties.py#L103-L112 |
246,831 | kensho-technologies/graphql-compiler | graphql_compiler/schema_generation/schema_properties.py | _parse_datetime_default_value | def _parse_datetime_default_value(property_name, default_value_string):
"""Parse and return the default value for a datetime property."""
# OrientDB doesn't use ISO-8601 datetime format, so we have to parse it manually
# and then turn it into a python datetime object. strptime() will raise an exception
... | python | def _parse_datetime_default_value(property_name, default_value_string):
# OrientDB doesn't use ISO-8601 datetime format, so we have to parse it manually
# and then turn it into a python datetime object. strptime() will raise an exception
# if the provided value cannot be parsed correctly.
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246,832 | kensho-technologies/graphql-compiler | graphql_compiler/schema_generation/schema_properties.py | _parse_date_default_value | def _parse_date_default_value(property_name, default_value_string):
"""Parse and return the default value for a date property."""
# OrientDB doesn't use ISO-8601 datetime format, so we have to parse it manually
# and then turn it into a python datetime object. strptime() will raise an exception
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246,833 | kensho-technologies/graphql-compiler | graphql_compiler/schema_generation/schema_properties.py | parse_default_property_value | def parse_default_property_value(property_name, property_type_id, default_value_string):
"""Parse the default value string into its proper form given the property type ID.
Args:
property_name: string, the name of the property whose default value is being parsed.
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if property_type_id == PROPERTY_TYPE_EMBEDDED_SET_ID and default_value_string == '{}':
return set()
elif property_type_id == PROPERTY_TYPE_EMBEDDED_LIST_ID and default_value_string == '[]':
return list()
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246,834 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/common.py | _compile_graphql_generic | def _compile_graphql_generic(language, lowering_func, query_emitter_func,
schema, graphql_string, type_equivalence_hints, compiler_metadata):
"""Compile the GraphQL input, lowering and emitting the query using the given functions.
Args:
language: string indicating the targe... | python | def _compile_graphql_generic(language, lowering_func, query_emitter_func,
schema, graphql_string, type_equivalence_hints, compiler_metadata):
ir_and_metadata = graphql_to_ir(
schema, graphql_string, type_equivalence_hints=type_equivalence_hints)
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246,835 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/filters.py | scalar_leaf_only | def scalar_leaf_only(operator):
"""Ensure the filter function is only applied to scalar leaf types."""
def decorator(f):
"""Decorate the supplied function with the "scalar_leaf_only" logic."""
@wraps(f)
def wrapper(filter_operation_info, context, parameters, *args, **kwargs):
... | python | def scalar_leaf_only(operator):
def decorator(f):
"""Decorate the supplied function with the "scalar_leaf_only" logic."""
@wraps(f)
def wrapper(filter_operation_info, context, parameters, *args, **kwargs):
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246,836 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/filters.py | vertex_field_only | def vertex_field_only(operator):
"""Ensure the filter function is only applied to vertex field types."""
def decorator(f):
"""Decorate the supplied function with the "vertex_field_only" logic."""
@wraps(f)
def wrapper(filter_operation_info, context, parameters, *args, **kwargs):
... | python | def vertex_field_only(operator):
def decorator(f):
"""Decorate the supplied function with the "vertex_field_only" logic."""
@wraps(f)
def wrapper(filter_operation_info, context, parameters, *args, **kwargs):
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246,837 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/filters.py | takes_parameters | def takes_parameters(count):
"""Ensure the filter function has "count" parameters specified."""
def decorator(f):
"""Decorate the supplied function with the "takes_parameters" logic."""
@wraps(f)
def wrapper(filter_operation_info, location, context, parameters, *args, **kwargs):
... | python | def takes_parameters(count):
def decorator(f):
"""Decorate the supplied function with the "takes_parameters" logic."""
@wraps(f)
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246,838 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/filters.py | _represent_argument | def _represent_argument(directive_location, context, argument, inferred_type):
"""Return a two-element tuple that represents the argument to the directive being processed.
Args:
directive_location: Location where the directive is used.
context: dict, various per-compilation data (e.g. declared ... | python | def _represent_argument(directive_location, context, argument, inferred_type):
# Regardless of what kind of variable we are dealing with,
# we want to ensure its name is valid.
argument_name = argument[1:]
validate_safe_string(argument_name)
if is_variable_argument(argument):
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246,839 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/filters.py | _process_comparison_filter_directive | def _process_comparison_filter_directive(filter_operation_info, location,
context, parameters, operator=None):
"""Return a Filter basic block that performs the given comparison against the property field.
Args:
filter_operation_info: FilterOperationInfo object, ... | python | def _process_comparison_filter_directive(filter_operation_info, location,
context, parameters, operator=None):
comparison_operators = {u'=', u'!=', u'>', u'<', u'>=', u'<='}
if operator not in comparison_operators:
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246,840 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/filters.py | _process_has_edge_degree_filter_directive | def _process_has_edge_degree_filter_directive(filter_operation_info, location, context, parameters):
"""Return a Filter basic block that checks the degree of the edge to the given vertex field.
Args:
filter_operation_info: FilterOperationInfo object, containing the directive and field info
... | python | def _process_has_edge_degree_filter_directive(filter_operation_info, location, context, parameters):
if isinstance(filter_operation_info.field_ast, InlineFragment):
raise AssertionError(u'Received InlineFragment AST node in "has_edge_degree" filter '
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246,841 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/filters.py | _process_name_or_alias_filter_directive | def _process_name_or_alias_filter_directive(filter_operation_info, location, context, parameters):
"""Return a Filter basic block that checks for a match against an Entity's name or alias.
Args:
filter_operation_info: FilterOperationInfo object, containing the directive and field info
... | python | def _process_name_or_alias_filter_directive(filter_operation_info, location, context, parameters):
filtered_field_type = filter_operation_info.field_type
if isinstance(filtered_field_type, GraphQLUnionType):
raise GraphQLCompilationError(u'Cannot apply "name_or_alias" to union type '
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246,842 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/filters.py | _process_between_filter_directive | def _process_between_filter_directive(filter_operation_info, location, context, parameters):
"""Return a Filter basic block that checks that a field is between two values, inclusive.
Args:
filter_operation_info: FilterOperationInfo object, containing the directive and field info
... | python | def _process_between_filter_directive(filter_operation_info, location, context, parameters):
filtered_field_type = filter_operation_info.field_type
filtered_field_name = filter_operation_info.field_name
argument_inferred_type = strip_non_null_from_type(filtered_field_type)
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246,843 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/filters.py | _process_in_collection_filter_directive | def _process_in_collection_filter_directive(filter_operation_info, location, context, parameters):
"""Return a Filter basic block that checks for a value's existence in a collection.
Args:
filter_operation_info: FilterOperationInfo object, containing the directive and field info
... | python | def _process_in_collection_filter_directive(filter_operation_info, location, context, parameters):
filtered_field_type = filter_operation_info.field_type
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argument_inferred_type = GraphQLList(strip_non_null_from_type(filtered_field_type))
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246,844 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/filters.py | _process_has_substring_filter_directive | def _process_has_substring_filter_directive(filter_operation_info, location, context, parameters):
"""Return a Filter basic block that checks if the directive arg is a substring of the field.
Args:
filter_operation_info: FilterOperationInfo object, containing the directive and field info
... | python | def _process_has_substring_filter_directive(filter_operation_info, location, context, parameters):
filtered_field_type = filter_operation_info.field_type
filtered_field_name = filter_operation_info.field_name
if not strip_non_null_from_type(filtered_field_type).is_same_type(GraphQLString):
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246,845 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/filters.py | _process_contains_filter_directive | def _process_contains_filter_directive(filter_operation_info, location, context, parameters):
"""Return a Filter basic block that checks if the directive arg is contained in the field.
Args:
filter_operation_info: FilterOperationInfo object, containing the directive and field info
... | python | def _process_contains_filter_directive(filter_operation_info, location, context, parameters):
filtered_field_type = filter_operation_info.field_type
filtered_field_name = filter_operation_info.field_name
base_field_type = strip_non_null_from_type(filtered_field_type)
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246,846 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/filters.py | _process_intersects_filter_directive | def _process_intersects_filter_directive(filter_operation_info, location, context, parameters):
"""Return a Filter basic block that checks if the directive arg and the field intersect.
Args:
filter_operation_info: FilterOperationInfo object, containing the directive and field info
... | python | def _process_intersects_filter_directive(filter_operation_info, location, context, parameters):
filtered_field_type = filter_operation_info.field_type
filtered_field_name = filter_operation_info.field_name
argument_inferred_type = strip_non_null_from_type(filtered_field_type)
if not isinstance(argument... | [
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246,847 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/filters.py | is_filter_with_outer_scope_vertex_field_operator | def is_filter_with_outer_scope_vertex_field_operator(directive):
"""Return True if we have a filter directive whose operator applies to the outer scope."""
if directive.name.value != 'filter':
return False
op_name, _ = _get_filter_op_name_and_values(directive)
return op_name in OUTER_SCOPE_VERT... | python | def is_filter_with_outer_scope_vertex_field_operator(directive):
if directive.name.value != 'filter':
return False
op_name, _ = _get_filter_op_name_and_values(directive)
return op_name in OUTER_SCOPE_VERTEX_FIELD_OPERATORS | [
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246,848 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/filters.py | process_filter_directive | def process_filter_directive(filter_operation_info, location, context):
"""Return a Filter basic block that corresponds to the filter operation in the directive.
Args:
filter_operation_info: FilterOperationInfo object, containing the directive and field info
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op_name, operator_params = _get_filter_op_name_and_values(filter_operation_info.directive)
non_comparison_filters = {
u'name_or_alias': _process_name_or_alias_filter_directive,
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246,849 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/sql_context_helpers.py | get_schema_type_name | def get_schema_type_name(node, context):
"""Return the GraphQL type name of a node."""
query_path = node.query_path
if query_path not in context.query_path_to_location_info:
raise AssertionError(
u'Unable to find type name for query path {} with context {}.'.format(
query... | python | def get_schema_type_name(node, context):
query_path = node.query_path
if query_path not in context.query_path_to_location_info:
raise AssertionError(
u'Unable to find type name for query path {} with context {}.'.format(
query_path, context))
location_info = context.query... | [
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246,850 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/sql_context_helpers.py | get_node_at_path | def get_node_at_path(query_path, context):
"""Return the SqlNode associated with the query path."""
if query_path not in context.query_path_to_node:
raise AssertionError(
u'Unable to find SqlNode for query path {} with context {}.'.format(
query_path, context))
node = con... | python | def get_node_at_path(query_path, context):
if query_path not in context.query_path_to_node:
raise AssertionError(
u'Unable to find SqlNode for query path {} with context {}.'.format(
query_path, context))
node = context.query_path_to_node[query_path]
return node | [
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246,851 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/sql_context_helpers.py | try_get_column | def try_get_column(column_name, node, context):
"""Attempt to get a column by name from the selectable.
Args:
column_name: str, name of the column to retrieve.
node: SqlNode, the node the column is being retrieved for.
context: CompilationContext, compilation specific metadata.
Ret... | python | def try_get_column(column_name, node, context):
selectable = get_node_selectable(node, context)
if not hasattr(selectable, 'c'):
raise AssertionError(
u'Selectable "{}" does not have a column collection. Context is {}.'.format(
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246,852 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/sql_context_helpers.py | get_column | def get_column(column_name, node, context):
"""Get a column by name from the selectable.
Args:
column_name: str, name of the column to retrieve.
node: SqlNode, the node the column is being retrieved for.
context: CompilationContext, compilation specific metadata.
Returns:
c... | python | def get_column(column_name, node, context):
column = try_get_column(column_name, node, context)
if column is None:
selectable = get_node_selectable(node, context)
raise AssertionError(
u'Column "{}" not found in selectable "{}". Columns present are {}. '
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246,853 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/directive_helpers.py | get_unique_directives | def get_unique_directives(ast):
"""Return a dict of directive name to directive object for the given AST node.
Any directives that are allowed to exist more than once on any AST node are ignored.
For any directives that can only exist up to once, we verify that they are not duplicated
raising GraphQLCo... | python | def get_unique_directives(ast):
if not ast.directives:
return dict()
result = dict()
for directive_obj in ast.directives:
directive_name = directive_obj.name.value
if directive_name in ALLOWED_DUPLICATED_DIRECTIVES:
pass # We don't return these.
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246,854 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/directive_helpers.py | get_local_filter_directives | def get_local_filter_directives(ast, current_schema_type, inner_vertex_fields):
"""Get all filter directives that apply to the current field.
This helper abstracts away the fact that some vertex field filtering operators apply on the
inner scope (the scope of the inner vertex field on which they are applie... | python | def get_local_filter_directives(ast, current_schema_type, inner_vertex_fields):
result = []
if ast.directives: # it'll be None if the AST has no directives at that node
for directive_obj in ast.directives:
# Of all filters that appear *on the field itself*, only the ones that apply
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246,855 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/directive_helpers.py | validate_property_directives | def validate_property_directives(directives):
"""Validate the directives that appear at a property field."""
for directive_name in six.iterkeys(directives):
if directive_name in VERTEX_ONLY_DIRECTIVES:
raise GraphQLCompilationError(
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for directive_name in six.iterkeys(directives):
if directive_name in VERTEX_ONLY_DIRECTIVES:
raise GraphQLCompilationError(
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246,856 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/directive_helpers.py | validate_vertex_directives | def validate_vertex_directives(directives):
"""Validate the directives that appear at a vertex field."""
for directive_name in six.iterkeys(directives):
if directive_name in PROPERTY_ONLY_DIRECTIVES:
raise GraphQLCompilationError(
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for directive_name in six.iterkeys(directives):
if directive_name in PROPERTY_ONLY_DIRECTIVES:
raise GraphQLCompilationError(
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246,857 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/directive_helpers.py | validate_root_vertex_directives | def validate_root_vertex_directives(root_ast):
"""Validate the directives that appear at the root vertex field."""
directives_present_at_root = set()
for directive_obj in root_ast.directives:
directive_name = directive_obj.name.value
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directives_present_at_root = set()
for directive_obj in root_ast.directives:
directive_name = directive_obj.name.value
if is_filter_with_outer_scope_vertex_field_operator(directive_obj):
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246,858 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/directive_helpers.py | validate_vertex_field_directive_interactions | def validate_vertex_field_directive_interactions(parent_location, vertex_field_name, directives):
"""Ensure that the specified vertex field directives are not mutually disallowed."""
fold_directive = directives.get('fold', None)
optional_directive = directives.get('optional', None)
output_source_directi... | python | def validate_vertex_field_directive_interactions(parent_location, vertex_field_name, directives):
fold_directive = directives.get('fold', None)
optional_directive = directives.get('optional', None)
output_source_directive = directives.get('output_source', None)
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246,859 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/directive_helpers.py | validate_vertex_field_directive_in_context | def validate_vertex_field_directive_in_context(parent_location, vertex_field_name,
directives, context):
"""Ensure that the specified vertex field directives are allowed in the current context."""
fold_directive = directives.get('fold', None)
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fold_directive = directives.get('fold', None)
optional_directive = directives.get('optional', None)
recurse_directive = directives.get('recurse', None)
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246,860 | kensho-technologies/graphql-compiler | graphql_compiler/query_formatting/match_formatting.py | _safe_match_string | def _safe_match_string(value):
"""Sanitize and represent a string argument in MATCH."""
if not isinstance(value, six.string_types):
if isinstance(value, bytes): # should only happen in py3
value = value.decode('utf-8')
else:
raise GraphQLInvalidArgumentError(u'Attempting... | python | def _safe_match_string(value):
if not isinstance(value, six.string_types):
if isinstance(value, bytes): # should only happen in py3
value = value.decode('utf-8')
else:
raise GraphQLInvalidArgumentError(u'Attempting to convert a non-string into a string: '
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246,861 | kensho-technologies/graphql-compiler | graphql_compiler/query_formatting/match_formatting.py | _safe_match_date_and_datetime | def _safe_match_date_and_datetime(graphql_type, expected_python_types, value):
"""Represent date and datetime objects as MATCH strings."""
# Python datetime.datetime is a subclass of datetime.date,
# but in this case, the two are not interchangeable.
# Rather than using isinstance, we will therefore che... | python | def _safe_match_date_and_datetime(graphql_type, expected_python_types, value):
# Python datetime.datetime is a subclass of datetime.date,
# but in this case, the two are not interchangeable.
# Rather than using isinstance, we will therefore check for exact type equality.
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246,862 | kensho-technologies/graphql-compiler | graphql_compiler/query_formatting/match_formatting.py | _safe_match_list | def _safe_match_list(inner_type, argument_value):
"""Represent the list of "inner_type" objects in MATCH form."""
stripped_type = strip_non_null_from_type(inner_type)
if isinstance(stripped_type, GraphQLList):
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stripped_type = strip_non_null_from_type(inner_type)
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raise GraphQLInvalidArgumentError(u'MATCH does not currently support nested lists, '
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246,863 | kensho-technologies/graphql-compiler | graphql_compiler/query_formatting/match_formatting.py | insert_arguments_into_match_query | def insert_arguments_into_match_query(compilation_result, arguments):
"""Insert the arguments into the compiled MATCH query to form a complete query.
Args:
compilation_result: a CompilationResult object derived from the GraphQL compiler
arguments: dict, mapping argument name to its value, for e... | python | def insert_arguments_into_match_query(compilation_result, arguments):
if compilation_result.language != MATCH_LANGUAGE:
raise AssertionError(u'Unexpected query output language: {}'.format(compilation_result))
base_query = compilation_result.query
argument_types = compilation_result.input_metadata
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246,864 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_sql/metadata.py | SqlMetadata.get_table | def get_table(self, schema_type):
"""Retrieve a SQLAlchemy table based on the supplied GraphQL schema type name."""
table_name = schema_type.lower()
if not self.has_table(table_name):
raise exceptions.GraphQLCompilationError(
'No Table found in SQLAlchemy metadata for... | python | def get_table(self, schema_type):
table_name = schema_type.lower()
if not self.has_table(table_name):
raise exceptions.GraphQLCompilationError(
'No Table found in SQLAlchemy metadata for table name "{}"'.format(table_name)
)
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246,865 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/match_query.py | _per_location_tuple_to_step | def _per_location_tuple_to_step(ir_tuple):
"""Construct a MatchStep from a tuple of its constituent blocks."""
root_block = ir_tuple[0]
if not isinstance(root_block, root_block_types):
raise AssertionError(u'Unexpected root block type for MatchStep: '
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root_block = ir_tuple[0]
if not isinstance(root_block, root_block_types):
raise AssertionError(u'Unexpected root block type for MatchStep: '
u'{} {}'.format(root_block, ir_tuple))
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246,866 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/match_query.py | _split_ir_into_match_steps | def _split_ir_into_match_steps(pruned_ir_blocks):
"""Split a list of IR blocks into per-location MATCH steps.
Args:
pruned_ir_blocks: list of IR basic block objects that have gone through a lowering step.
Returns:
list of MatchStep namedtuples, each of which contains all basic blocks that ... | python | def _split_ir_into_match_steps(pruned_ir_blocks):
output = []
current_tuple = None
for block in pruned_ir_blocks:
if isinstance(block, OutputSource):
# OutputSource blocks do not require any MATCH code, and only serve to help
# optimizations and debugging. Simply omit them at... | [
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246,867 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/match_query.py | _split_match_steps_into_match_traversals | def _split_match_steps_into_match_traversals(match_steps):
"""Split a list of MatchSteps into multiple lists, each denoting a single MATCH traversal."""
output = []
current_list = None
for step in match_steps:
if isinstance(step.root_block, QueryRoot):
if current_list is not None:
... | python | def _split_match_steps_into_match_traversals(match_steps):
output = []
current_list = None
for step in match_steps:
if isinstance(step.root_block, QueryRoot):
if current_list is not None:
output.append(current_list)
current_list = [step]
else:
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246,868 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/match_query.py | convert_to_match_query | def convert_to_match_query(ir_blocks):
"""Convert the list of IR blocks into a MatchQuery object, for easier manipulation."""
output_block = ir_blocks[-1]
if not isinstance(output_block, ConstructResult):
raise AssertionError(u'Expected last IR block to be ConstructResult, found: '
... | python | def convert_to_match_query(ir_blocks):
output_block = ir_blocks[-1]
if not isinstance(output_block, ConstructResult):
raise AssertionError(u'Expected last IR block to be ConstructResult, found: '
u'{} {}'.format(output_block, ir_blocks))
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246,869 | kensho-technologies/graphql-compiler | graphql_compiler/query_formatting/sql_formatting.py | insert_arguments_into_sql_query | def insert_arguments_into_sql_query(compilation_result, arguments):
"""Insert the arguments into the compiled SQL query to form a complete query.
Args:
compilation_result: CompilationResult, compilation result from the GraphQL compiler.
arguments: Dict[str, Any], parameter name -> value, for ev... | python | def insert_arguments_into_sql_query(compilation_result, arguments):
if compilation_result.language != SQL_LANGUAGE:
raise AssertionError(u'Unexpected query output language: {}'.format(compilation_result))
base_query = compilation_result.query
return base_query.params(**arguments) | [
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246,870 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_match/utils.py | convert_coerce_type_to_instanceof_filter | def convert_coerce_type_to_instanceof_filter(coerce_type_block):
"""Create an "INSTANCEOF" Filter block from a CoerceType block."""
coerce_type_target = get_only_element_from_collection(coerce_type_block.target_class)
# INSTANCEOF requires the target class to be passed in as a string,
# so we make the ... | python | def convert_coerce_type_to_instanceof_filter(coerce_type_block):
coerce_type_target = get_only_element_from_collection(coerce_type_block.target_class)
# INSTANCEOF requires the target class to be passed in as a string,
# so we make the target class a string literal.
new_predicate = BinaryComposition(
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246,871 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_match/utils.py | convert_coerce_type_and_add_to_where_block | def convert_coerce_type_and_add_to_where_block(coerce_type_block, where_block):
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instanceof_filter = convert_coerce_type_to_instanceof_filter(coerce_type_block)
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# There was already a Filter bl... | python | def convert_coerce_type_and_add_to_where_block(coerce_type_block, where_block):
instanceof_filter = convert_coerce_type_to_instanceof_filter(coerce_type_block)
if where_block:
# There was already a Filter block -- we'll merge the two predicates together.
return Filter(BinaryComposition(u'&&', i... | [
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246,872 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_match/utils.py | expression_list_to_conjunction | def expression_list_to_conjunction(expression_list):
"""Convert a list of expressions to an Expression that is the conjunction of all of them."""
if not isinstance(expression_list, list):
raise AssertionError(u'Expected `list`, Received {}.'.format(expression_list))
if len(expression_list) == 0:
... | python | def expression_list_to_conjunction(expression_list):
if not isinstance(expression_list, list):
raise AssertionError(u'Expected `list`, Received {}.'.format(expression_list))
if len(expression_list) == 0:
return TrueLiteral
if not isinstance(expression_list[0], Expression):
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246,873 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_match/utils.py | construct_where_filter_predicate | def construct_where_filter_predicate(query_metadata_table, simple_optional_root_info):
"""Return an Expression that is True if and only if each simple optional filter is True.
Construct filters for each simple optional, that are True if and only if `edge_field` does
not exist in the `simple_optional_root_l... | python | def construct_where_filter_predicate(query_metadata_table, simple_optional_root_info):
inner_location_name_to_where_filter = {}
for root_location, root_info_dict in six.iteritems(simple_optional_root_info):
inner_location_name = root_info_dict['inner_location_name']
edge_field = root_info_dict['... | [
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246,874 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_match/utils.py | construct_optional_traversal_tree | def construct_optional_traversal_tree(complex_optional_roots, location_to_optional_roots):
"""Return a tree of complex optional root locations.
Args:
complex_optional_roots: list of @optional locations (location immmediately preceding
an @optional Traverse) that expand v... | python | def construct_optional_traversal_tree(complex_optional_roots, location_to_optional_roots):
tree = OptionalTraversalTree(complex_optional_roots)
for optional_root_locations_stack in six.itervalues(location_to_optional_roots):
tree.insert(list(optional_root_locations_stack))
return tree | [
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246,875 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_match/utils.py | BetweenClause.validate | def validate(self):
"""Validate that the Between Expression is correctly representable."""
if not isinstance(self.field, LocalField):
raise TypeError(u'Expected LocalField field, got: {} {}'.format(
type(self.field).__name__, self.field))
if not isinstance(self.lower... | python | def validate(self):
if not isinstance(self.field, LocalField):
raise TypeError(u'Expected LocalField field, got: {} {}'.format(
type(self.field).__name__, self.field))
if not isinstance(self.lower_bound, Expression):
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246,876 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_match/utils.py | BetweenClause.to_match | def to_match(self):
"""Return a unicode object with the MATCH representation of this BetweenClause."""
template = u'({field_name} BETWEEN {lower_bound} AND {upper_bound})'
return template.format(
field_name=self.field.to_match(),
lower_bound=self.lower_bound.to_match(),
... | python | def to_match(self):
template = u'({field_name} BETWEEN {lower_bound} AND {upper_bound})'
return template.format(
field_name=self.field.to_match(),
lower_bound=self.lower_bound.to_match(),
upper_bound=self.upper_bound.to_match()) | [
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246,877 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_match/utils.py | OptionalTraversalTree.insert | def insert(self, optional_root_locations_path):
"""Insert a path of optional Locations into the tree.
Each OptionalTraversalTree object contains child Location objects as keys mapping to
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Args:
optional_root_locations_path: list of option... | python | def insert(self, optional_root_locations_path):
encountered_simple_optional = False
parent_location = self._root_location
for optional_root_location in optional_root_locations_path:
if encountered_simple_optional:
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246,878 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/emit_sql.py | emit_code_from_ir | def emit_code_from_ir(sql_query_tree, compiler_metadata):
"""Return a SQLAlchemy Query from a passed SqlQueryTree.
Args:
sql_query_tree: SqlQueryTree, tree representation of the query to emit.
compiler_metadata: SqlMetadata, SQLAlchemy specific metadata.
Returns:
SQLAlchemy Query
... | python | def emit_code_from_ir(sql_query_tree, compiler_metadata):
context = CompilationContext(
query_path_to_selectable=dict(),
query_path_to_location_info=sql_query_tree.query_path_to_location_info,
query_path_to_output_fields=sql_query_tree.query_path_to_output_fields,
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246,879 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/emit_sql.py | _create_table_and_update_context | def _create_table_and_update_context(node, context):
"""Create an aliased table for a SqlNode.
Updates the relevant Selectable global context.
Args:
node: SqlNode, the current node.
context: CompilationContext, global compilation state and metadata.
Returns:
Table, the newly a... | python | def _create_table_and_update_context(node, context):
schema_type_name = sql_context_helpers.get_schema_type_name(node, context)
table = context.compiler_metadata.get_table(schema_type_name).alias()
context.query_path_to_selectable[node.query_path] = table
return table | [
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246,880 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/emit_sql.py | _create_query | def _create_query(node, context):
"""Create a query from a SqlNode.
Args:
node: SqlNode, the current node.
context: CompilationContext, global compilation state and metadata.
Returns:
Selectable, selectable of the generated query.
"""
visited_nodes = [node]
output_colum... | python | def _create_query(node, context):
visited_nodes = [node]
output_columns = _get_output_columns(visited_nodes, context)
filters = _get_filters(visited_nodes, context)
selectable = sql_context_helpers.get_node_selectable(node, context)
query = select(output_columns).select_from(selectable).where(and_(*... | [
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246,881 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/emit_sql.py | _get_output_columns | def _get_output_columns(nodes, context):
"""Get the output columns for a list of SqlNodes.
Args:
nodes: List[SqlNode], the nodes to get output columns from.
context: CompilationContext, global compilation state and metadata.
Returns:
List[Column], list of SqlAlchemy Columns to outp... | python | def _get_output_columns(nodes, context):
columns = []
for node in nodes:
for sql_output in sql_context_helpers.get_outputs(node, context):
field_name = sql_output.field_name
column = sql_context_helpers.get_column(field_name, node, context)
column = column.label(sql_o... | [
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246,882 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/emit_sql.py | _get_filters | def _get_filters(nodes, context):
"""Get filters to apply to a list of SqlNodes.
Args:
nodes: List[SqlNode], the SqlNodes to get filters for.
context: CompilationContext, global compilation state and metadata.
Returns:
List[Expression], list of SQLAlchemy expressions.
"""
f... | python | def _get_filters(nodes, context):
filters = []
for node in nodes:
for filter_block in sql_context_helpers.get_filters(node, context):
filter_sql_expression = _transform_filter_to_sql(filter_block, node, context)
filters.append(filter_sql_expression)
return filters | [
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246,883 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/emit_sql.py | _transform_filter_to_sql | def _transform_filter_to_sql(filter_block, node, context):
"""Transform a Filter block to its corresponding SQLAlchemy expression.
Args:
filter_block: Filter, the Filter block to transform.
node: SqlNode, the node Filter block applies to.
context: CompilationContext, global compilation ... | python | def _transform_filter_to_sql(filter_block, node, context):
expression = filter_block.predicate
return _expression_to_sql(expression, node, context) | [
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246,884 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/emit_sql.py | _expression_to_sql | def _expression_to_sql(expression, node, context):
"""Recursively transform a Filter block predicate to its SQLAlchemy expression representation.
Args:
expression: expression, the compiler expression to transform.
node: SqlNode, the SqlNode the expression applies to.
context: Compilatio... | python | def _expression_to_sql(expression, node, context):
_expression_transformers = {
expressions.LocalField: _transform_local_field_to_expression,
expressions.Variable: _transform_variable_to_expression,
expressions.Literal: _transform_literal_to_expression,
expressions.BinaryComposition:... | [
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246,885 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/emit_sql.py | _transform_binary_composition_to_expression | def _transform_binary_composition_to_expression(expression, node, context):
"""Transform a BinaryComposition compiler expression into a SQLAlchemy expression.
Recursively calls _expression_to_sql to convert its left and right sub-expressions.
Args:
expression: expression, BinaryComposition compile... | python | def _transform_binary_composition_to_expression(expression, node, context):
if expression.operator not in constants.SUPPORTED_OPERATORS:
raise NotImplementedError(
u'Filter operation "{}" is not supported by the SQL backend.'.format(
expression.operator))
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246,886 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/emit_sql.py | _transform_variable_to_expression | def _transform_variable_to_expression(expression, node, context):
"""Transform a Variable compiler expression into its SQLAlchemy expression representation.
Args:
expression: expression, Variable compiler expression.
node: SqlNode, the SqlNode the expression applies to.
context: Compila... | python | def _transform_variable_to_expression(expression, node, context):
variable_name = expression.variable_name
if not variable_name.startswith(u'$'):
raise AssertionError(u'Unexpectedly received variable name {} that is not '
u'prefixed with "$"'.format(variable_name))
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246,887 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/emit_sql.py | _transform_local_field_to_expression | def _transform_local_field_to_expression(expression, node, context):
"""Transform a LocalField compiler expression into its SQLAlchemy expression representation.
Args:
expression: expression, LocalField compiler expression.
node: SqlNode, the SqlNode the expression applies to.
context: ... | python | def _transform_local_field_to_expression(expression, node, context):
column_name = expression.field_name
column = sql_context_helpers.get_column(column_name, node, context)
return column | [
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246,888 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_common.py | lower_context_field_existence | def lower_context_field_existence(ir_blocks, query_metadata_table):
"""Lower ContextFieldExistence expressions into lower-level expressions."""
def regular_visitor_fn(expression):
"""Expression visitor function that rewrites ContextFieldExistence expressions."""
if not isinstance(expression, Con... | python | def lower_context_field_existence(ir_blocks, query_metadata_table):
def regular_visitor_fn(expression):
"""Expression visitor function that rewrites ContextFieldExistence expressions."""
if not isinstance(expression, ContextFieldExistence):
return expression
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] | f6079c6d10f64932f6b3af309b79bcea2123ca8f | https://github.com/kensho-technologies/graphql-compiler/blob/f6079c6d10f64932f6b3af309b79bcea2123ca8f/graphql_compiler/compiler/ir_lowering_common.py#L56-L95 |
246,889 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_common.py | optimize_boolean_expression_comparisons | def optimize_boolean_expression_comparisons(ir_blocks):
"""Optimize comparisons of a boolean binary comparison expression against a boolean literal.
Rewriting example:
BinaryComposition(
'=',
BinaryComposition('!=', something, NullLiteral)
False)
The above is re... | python | def optimize_boolean_expression_comparisons(ir_blocks):
operator_inverses = {
u'=': u'!=',
u'!=': u'=',
}
def visitor_fn(expression):
"""Expression visitor function that performs the above rewriting."""
if not isinstance(expression, BinaryComposition):
return exp... | [
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Rewriting example:
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246,890 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_common.py | extract_simple_optional_location_info | def extract_simple_optional_location_info(
ir_blocks, complex_optional_roots, location_to_optional_roots):
"""Construct a map from simple optional locations to their inner location and traversed edge.
Args:
ir_blocks: list of IR blocks to extract optional data from
complex_optional_root... | python | def extract_simple_optional_location_info(
ir_blocks, complex_optional_roots, location_to_optional_roots):
# Simple optional roots are a subset of location_to_optional_roots.values() (all optional roots)
# We filter out the ones that are also present in complex_optional_roots.
location_to_preceding_... | [
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] | f6079c6d10f64932f6b3af309b79bcea2123ca8f | https://github.com/kensho-technologies/graphql-compiler/blob/f6079c6d10f64932f6b3af309b79bcea2123ca8f/graphql_compiler/compiler/ir_lowering_common.py#L283-L337 |
246,891 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_common.py | remove_end_optionals | def remove_end_optionals(ir_blocks):
"""Return a list of IR blocks as a copy of the original, with EndOptional blocks removed."""
new_ir_blocks = []
for block in ir_blocks:
if not isinstance(block, EndOptional):
new_ir_blocks.append(block)
return new_ir_blocks | python | def remove_end_optionals(ir_blocks):
new_ir_blocks = []
for block in ir_blocks:
if not isinstance(block, EndOptional):
new_ir_blocks.append(block)
return new_ir_blocks | [
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246,892 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_common.py | OutputContextVertex.validate | def validate(self):
"""Validate that the OutputContextVertex is correctly representable."""
super(OutputContextVertex, self).validate()
if self.location.field is not None:
raise ValueError(u'Expected location at a vertex, but got: {}'.format(self.location)) | python | def validate(self):
super(OutputContextVertex, self).validate()
if self.location.field is not None:
raise ValueError(u'Expected location at a vertex, but got: {}'.format(self.location)) | [
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246,893 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_match/ir_lowering.py | lower_has_substring_binary_compositions | def lower_has_substring_binary_compositions(ir_blocks):
"""Lower Filter blocks that use the "has_substring" operation into MATCH-representable form."""
def visitor_fn(expression):
"""Rewrite BinaryComposition expressions with "has_substring" into representable form."""
# The implementation of "h... | python | def lower_has_substring_binary_compositions(ir_blocks):
def visitor_fn(expression):
"""Rewrite BinaryComposition expressions with "has_substring" into representable form."""
# The implementation of "has_substring" must use the LIKE operator in MATCH, and must
# prepend and append "%" symbols... | [
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246,894 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_match/ir_lowering.py | truncate_repeated_single_step_traversals | def truncate_repeated_single_step_traversals(match_query):
"""Truncate one-step traversals that overlap a previous traversal location."""
# Such traversals frequently happen as side-effects of the lowering process
# of Backtrack blocks, and needlessly complicate the executed queries.
new_match_traversal... | python | def truncate_repeated_single_step_traversals(match_query):
# Such traversals frequently happen as side-effects of the lowering process
# of Backtrack blocks, and needlessly complicate the executed queries.
new_match_traversals = []
visited_locations = set()
for current_match_traversal in match_quer... | [
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246,895 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_match/ir_lowering.py | _flatten_location_translations | def _flatten_location_translations(location_translations):
"""If location A translates to B, and B to C, then make A translate directly to C.
Args:
location_translations: dict of Location -> Location, where the key translates to the value.
Mutated in place for efficiency ... | python | def _flatten_location_translations(location_translations):
sources_to_process = set(six.iterkeys(location_translations))
def _update_translation(source):
"""Return the proper (fully-flattened) translation for the given location."""
destination = location_translations[source]
if destinat... | [
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Args:
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246,896 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_match/ir_lowering.py | _translate_equivalent_locations | def _translate_equivalent_locations(match_query, location_translations):
"""Translate Location objects into their equivalent locations, based on the given dict."""
new_match_traversals = []
def visitor_fn(expression):
"""Expression visitor function used to rewrite expressions with updated Location ... | python | def _translate_equivalent_locations(match_query, location_translations):
new_match_traversals = []
def visitor_fn(expression):
"""Expression visitor function used to rewrite expressions with updated Location data."""
if isinstance(expression, (ContextField, GlobalContextField)):
old... | [
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246,897 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_match/ir_lowering.py | lower_folded_coerce_types_into_filter_blocks | def lower_folded_coerce_types_into_filter_blocks(folded_ir_blocks):
"""Lower CoerceType blocks into "INSTANCEOF" Filter blocks. Indended for folded IR blocks."""
new_folded_ir_blocks = []
for block in folded_ir_blocks:
if isinstance(block, CoerceType):
new_block = convert_coerce_type_to_... | python | def lower_folded_coerce_types_into_filter_blocks(folded_ir_blocks):
new_folded_ir_blocks = []
for block in folded_ir_blocks:
if isinstance(block, CoerceType):
new_block = convert_coerce_type_to_instanceof_filter(block)
else:
new_block = block
new_folded_ir_blocks... | [
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246,898 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_match/ir_lowering.py | remove_backtrack_blocks_from_fold | def remove_backtrack_blocks_from_fold(folded_ir_blocks):
"""Return a list of IR blocks with all Backtrack blocks removed."""
new_folded_ir_blocks = []
for block in folded_ir_blocks:
if not isinstance(block, Backtrack):
new_folded_ir_blocks.append(block)
return new_folded_ir_blocks | python | def remove_backtrack_blocks_from_fold(folded_ir_blocks):
new_folded_ir_blocks = []
for block in folded_ir_blocks:
if not isinstance(block, Backtrack):
new_folded_ir_blocks.append(block)
return new_folded_ir_blocks | [
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246,899 | kensho-technologies/graphql-compiler | graphql_compiler/compiler/ir_lowering_match/ir_lowering.py | truncate_repeated_single_step_traversals_in_sub_queries | def truncate_repeated_single_step_traversals_in_sub_queries(compound_match_query):
"""For each sub-query, remove one-step traversals that overlap a previous traversal location."""
lowered_match_queries = []
for match_query in compound_match_query.match_queries:
new_match_query = truncate_repeated_si... | python | def truncate_repeated_single_step_traversals_in_sub_queries(compound_match_query):
lowered_match_queries = []
for match_query in compound_match_query.match_queries:
new_match_query = truncate_repeated_single_step_traversals(match_query)
lowered_match_queries.append(new_match_query)
return c... | [
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