com.bigdata.rdf.sparql.ast

Class FunctionRegistry.GroupConcatFactory

java.lang.Object

com.bigdata.rdf.sparql.ast.FunctionRegistry.GroupConcatFactory

All Implemented Interfaces:

FunctionRegistry.AggregateFactory, FunctionRegistry.Factory

Enclosing class:

FunctionRegistry

public static class FunctionRegistry.GroupConcatFactory
extends Object
implements FunctionRegistry.AggregateFactory

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	FunctionRegistry.GroupConcatFactory.Annotations

Constructor Summary

Constructors

Constructor and Description
FunctionRegistry.GroupConcatFactory()

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.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FunctionRegistry.GroupConcatFactory

public FunctionRegistry.GroupConcatFactory()

Method Detail

create

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

Description copied from interface: FunctionRegistry.Factory

Create an IValueExpression instance.

Specified by:

create in interface FunctionRegistry.Factory

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.