openstack/deb-python-yaql
Code Issues Proposed changes

Added engine options to disable input/output data conversion

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'yaql.convertInputData' and 'yaql.convertOutputData' engine
options were added.  By setting them to false one can suppress
input or output data conversion. For the input data this will prevent
yaql from converting mutable data structures (lists, dicts, sets) to
their immutable versions, which will break some of the constructs that
require hashable structures (for example set of lists, or list as a
dictionary key), for the output it will not expand produced iterators
and not convert tuples to lists. However this can greatly improve
performance in some cases

Change-Id: I240ce6646fe7dbc9522624739600b6c364bb9618
This commit is contained in:
Stan Lagun 2017-02-20 19:13:02 -05:00
parent e7a7f60631
commit 67d58bc17f
2 changed files with 7 additions and 2 deletions
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4
yaql/__init__.py
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@ -67,7 +67,9 @@ def _setup_context(data, context, finalizer, convention):
@specs.inject('engine', yaqltypes.Engine()) @specs.inject('engine', yaqltypes.Engine())
@specs.name('#finalize') @specs.name('#finalize')
def finalize(obj, limiter, engine): def finalize(obj, limiter, engine):
return utils.convert_output_data(obj, limiter, engine) if engine.options.get('yaql.convertOutputData', True):
return utils.convert_output_data(obj, limiter, engine)
return obj
context.register_function(limit) context.register_function(limit)
context.register_function(finalize) context.register_function(finalize)

5
yaql/language/expressions.py
View File

@ -161,7 +161,10 @@ class Statement(Function):
if context is None or context is utils.NO_VALUE: if context is None or context is utils.NO_VALUE:
context = yaql.create_context() context = yaql.create_context()
if data is not utils.NO_VALUE: if data is not utils.NO_VALUE:
context['$'] = utils.convert_input_data(data) if self.engine.options.get('yaql.convertInputData', True):
context['$'] = utils.convert_input_data(data)
else:
context['$'] = data
return self(utils.NO_VALUE, context, self.engine) return self(utils.NO_VALUE, context, self.engine)
def __str__(self): def __str__(self):