Package org.apache.vxquery.functions

Class Function

java.lang.Object

org.apache.vxquery.functions.Function

All Implemented Interfaces:

org.apache.hyracks.algebricks.core.algebra.functions.IFunctionInfo

Direct Known Subclasses:

BuiltinFunction, ExternalFunction, Operator, UserDefinedXQueryFunction

public abstract class Function
extends Object
implements org.apache.hyracks.algebricks.core.algebra.functions.IFunctionInfo

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Function.FunctionTag

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	aggregateEvaluatorFactory
protected IPropertyPropagationPolicy<DocumentOrder>	documentOrderPropagationPolicy
protected org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier	fid
protected QName	qname
protected boolean	scalarEvaluatorFactory
protected Signature	signature
protected IPropertyPropagationPolicy<UniqueNodes>	uniqueNodesPropagationPolicy
protected boolean	unnestingEvaluatorFactory

Constructor Summary

Constructors

Constructor	Description
Function(QName qname, Signature signature)

Method Summary

Modifier and Type	Method	Description
org.apache.hyracks.algebricks.runtime.base.IAggregateEvaluatorFactory	createAggregateEvaluatorFactory(org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory[] args)
org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory	createScalarEvaluatorFactory(org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory[] args)
org.apache.hyracks.algebricks.runtime.base.IUnnestingEvaluatorFactory	createUnnestingEvaluatorFactory(org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory[] args)
IPropertyPropagationPolicy<DocumentOrder>	getDocumentOrderPropagationPolicy()
org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier	getFunctionIdentifier()
QName	getName()
Signature	getSignature()
abstract Function.FunctionTag	getTag()
IPropertyPropagationPolicy<UniqueNodes>	getUniqueNodesPropagationPolicy()
boolean	hasAggregateEvaluatorFactory()
boolean	hasScalarEvaluatorFactory()
boolean	hasUnnestingEvaluatorFactory()
boolean	isFunctional()
abstract boolean	useContextImplicitly()

Methods inherited from class java.lang.Object

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

Field Detail

fid

protected final org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier fid

qname

protected final QName qname

signature

protected final Signature signature

documentOrderPropagationPolicy

protected IPropertyPropagationPolicy<DocumentOrder> documentOrderPropagationPolicy

uniqueNodesPropagationPolicy

protected IPropertyPropagationPolicy<UniqueNodes> uniqueNodesPropagationPolicy

aggregateEvaluatorFactory

protected boolean aggregateEvaluatorFactory

scalarEvaluatorFactory

protected boolean scalarEvaluatorFactory

unnestingEvaluatorFactory

protected boolean unnestingEvaluatorFactory

Constructor Detail

Function

public Function(QName qname,
                Signature signature)

Method Detail

getFunctionIdentifier

public final org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier getFunctionIdentifier()

Specified by:

getFunctionIdentifier in interface org.apache.hyracks.algebricks.core.algebra.functions.IFunctionInfo

getTag

public abstract Function.FunctionTag getTag()

useContextImplicitly

public abstract boolean useContextImplicitly()

isFunctional

public boolean isFunctional()

Specified by:

isFunctional in interface org.apache.hyracks.algebricks.core.algebra.functions.IFunctionInfo

createScalarEvaluatorFactory

public org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory createScalarEvaluatorFactory(org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory[] args)
                                                                                                throws SystemException

Throws:

SystemException

createAggregateEvaluatorFactory

public org.apache.hyracks.algebricks.runtime.base.IAggregateEvaluatorFactory createAggregateEvaluatorFactory(org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory[] args)
                                                                                                      throws SystemException

Throws:

SystemException

createUnnestingEvaluatorFactory

public org.apache.hyracks.algebricks.runtime.base.IUnnestingEvaluatorFactory createUnnestingEvaluatorFactory(org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory[] args)
                                                                                                      throws SystemException

Throws:

SystemException

getDocumentOrderPropagationPolicy

public IPropertyPropagationPolicy<DocumentOrder> getDocumentOrderPropagationPolicy()

getUniqueNodesPropagationPolicy

public IPropertyPropagationPolicy<UniqueNodes> getUniqueNodesPropagationPolicy()

hasAggregateEvaluatorFactory

public boolean hasAggregateEvaluatorFactory()

hasScalarEvaluatorFactory

public boolean hasScalarEvaluatorFactory()

hasUnnestingEvaluatorFactory

public boolean hasUnnestingEvaluatorFactory()

getName

public QName getName()

getSignature

public Signature getSignature()