com.bigdata.rdf.sparql.ast

Interface FunctionRegistry.Factory

All Known Subinterfaces:

FunctionRegistry.AggregateFactory

All Known Implementing Classes:

FunctionRegistry.CastFactory, FunctionRegistry.CompareFactory, FunctionRegistry.DateFactory, FunctionRegistry.DigestFactory, FunctionRegistry.ExistsFactory, FunctionRegistry.GroupConcatFactory, FunctionRegistry.InFactory, FunctionRegistry.MathFactory, FunctionRegistry.NumericFactory, FunctionRegistry.SameTermFactory

Enclosing class:

FunctionRegistry

public static interface FunctionRegistry.Factory

An interface for creating IValueExpressions from a function URI and its arguments.

Method Summary

Methods

Modifier and Type	Method and Description
IValueExpression<? extends IV>	create(BOpContextBase context, GlobalAnnotations globals, Map<String,Object> scalarValues, ValueExpressionNode... args) Create an IValueExpression instance.

Method Detail

create

IValueExpression<? extends IV> create(BOpContextBase context,
                                    GlobalAnnotations globals,
                                    Map<String,Object> scalarValues,
                                    ValueExpressionNode... args)

Create an IValueExpression instance.

Parameters:

context - The BOpContextBase required to evaluate IValueExpressions. This is used if we need to statically evaluate an IValueExpression during query optimization. During query execution the ContextBindingSet will convey this information.

globals - The global annotations, including the lexicon namespace.

scalarValues - The scalar arguments (used by some IAggregates).

args - The function arguments.

Returns:

The IValueExpression.

See Also:

create() was refactored to pass in the {@link BOpContextBase} to allow correct resolution of the {@link LexiconRelation} and {@link ILexiconConfiguration} in order to properly evaluate {@link IValueExpression}s during query optimization.