com.bigdata.rdf.sparql.ast

Class SubqueryRoot

java.lang.Object

com.bigdata.bop.CoreBaseBOp

com.bigdata.bop.ModifiableBOpBase

com.bigdata.rdf.sparql.ast.ASTBase

com.bigdata.rdf.sparql.ast.QueryNodeBase

com.bigdata.rdf.sparql.ast.QueryBase

com.bigdata.rdf.sparql.ast.SubqueryBase

com.bigdata.rdf.sparql.ast.SubqueryRoot

All Implemented Interfaces:

BOp, IBindingProducerNode, IGraphPatternContainer, IGroupMemberNode, IJoinNode, IProjectionDecl, IQueryNode, IVariableBindingRequirements, IPropertySet, Serializable, Cloneable

public class SubqueryRoot
extends SubqueryBase
implements IJoinNode

A SPARQL 1.1 style subquery.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	SubqueryRoot.Annotations

Field Summary

Fields inherited from class com.bigdata.bop.CoreBaseBOp

DEFAULT_INITIAL_CAPACITY

Fields inherited from interface com.bigdata.bop.BOp

NOANNS, NOARGS

Constructor Summary

Constructors

Constructor and Description
SubqueryRoot(BOp[] args, Map<String,Object> anns) Shallow copy constructor.
SubqueryRoot(QueryType queryType) Note: This constructor variant may be used with the implicit subquery for EXISTS to specify the type of the subquery as QueryType.ASK.
SubqueryRoot(SubqueryRoot queryBase) Deep copy constructor.

Method Summary

Methods

Modifier and Type	Method and Description
IVariable<?>	getAskVar()
List<FilterNode>	getAttachedJoinFilters() Return the FILTER(s) associated with this IJoinNode.
FilterExistsModeEnum	getFilterExistsMode()
boolean	isMinus() Returns false.
boolean	isOptional() Returns false.
boolean	isRunOnce()
void	setAskVar(IVariable<?> askVar)
void	setAttachedJoinFilters(List<FilterNode> filters)
void	setFilterExistsMode(FilterExistsModeEnum newVal)
void	setRunOnce(boolean runOnce) Indicate whether this subquery should run once rather than as-bound.
String	toString(int indent) The contract of this method at this level is under-specified.

Methods inherited from class com.bigdata.rdf.sparql.ast.SubqueryBase

getContext, getDesiredBound, getParent, getParentGraphPatternGroup, getParentJoinGroup, getRequiredBound, setParent

Methods inherited from class com.bigdata.rdf.sparql.ast.QueryBase

getBindingsClause, getConstruct, getGraphPattern, getGroupBy, getHaving, getIncludeInferred, getOrderBy, getProjectedVars, getProjection, getQueryType, getSelectExprVars, getSlice, getTimeout, getWhereClause, hasSlice, hasWhereClause, setBindingsClause, setConstruct, setGraphPattern, setGroupBy, setHaving, setIncludeInferred, setOrderBy, setProjection, setQueryType, setSlice, setTimeout, setWhereClause

Methods inherited from class com.bigdata.rdf.sparql.ast.QueryNodeBase

getQueryHints, toString

Methods inherited from class com.bigdata.rdf.sparql.ast.ASTBase

addExplainHint, getExplainHints, getQueryHint, getQueryHint, getQueryHintAsBoolean, getQueryHintAsBoolean, getQueryHintAsInteger, replaceAllWith, setQueryHint, setQueryHints

Methods inherited from class com.bigdata.bop.ModifiableBOpBase

addArg, addArg, addArgIfAbsent, annotations, annotationsEqual, argIterator, args, arity, clearProperty, copyAll, get, getProperty, indexOf, removeArg, replaceWith, setArg, setArgs, setId, setProperty, setUnboundProperty, toArray, toArray

Methods inherited from class com.bigdata.bop.CoreBaseBOp

annotationsEqual, annotationsToString, annotationsToString, annotationValueToString, checkArgs, clone, equals, getEvaluationContext, getId, getProperty, getRequiredProperty, hashCode, indent, isController, mutation, shortenName, toShortString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.bigdata.bop.BOp

annotations, argIterator, args, arity, clone, get, getEvaluationContext, getId, getProperty, getRequiredProperty, isController, setProperty, toArray, toArray, toShortString, toString

Methods inherited from interface cutthecrap.utils.striterators.IPropertySet

getProperty

Constructor Detail

SubqueryRoot

public SubqueryRoot(SubqueryRoot queryBase)

Deep copy constructor.

SubqueryRoot

public SubqueryRoot(BOp[] args,
            Map<String,Object> anns)

Shallow copy constructor.

SubqueryRoot

public SubqueryRoot(QueryType queryType)

Note: This constructor variant may be used with the implicit subquery for EXISTS to specify the type of the subquery as QueryType.ASK.

Parameters:

queryType -

Method Detail

setRunOnce

public void setRunOnce(boolean runOnce)

Indicate whether this subquery should run once rather than as-bound.

Parameters:

runOnce -

See Also:

SubqueryRoot.Annotations.RUN_ONCE

isRunOnce

public boolean isRunOnce()

setAskVar

public void setAskVar(IVariable<?> askVar)

See Also:

SubqueryRoot.Annotations.ASK_VAR

getAskVar

public IVariable<?> getAskVar()

See Also:

SubqueryRoot.Annotations.ASK_VAR

setFilterExistsMode

public void setFilterExistsMode(FilterExistsModeEnum newVal)

See Also:

SubqueryRoot.Annotations.FILTER_EXISTS

getFilterExistsMode

public FilterExistsModeEnum getFilterExistsMode()

See Also:

SubqueryRoot.Annotations.FILTER_EXISTS

isOptional

public final boolean isOptional()

Returns false.

Specified by:

isOptional in interface IJoinNode

isMinus

public final boolean isMinus()

Returns false.

Specified by:

isMinus in interface IJoinNode

getAttachedJoinFilters

public final List<FilterNode> getAttachedJoinFilters()

Description copied from interface: IJoinNode

Return the FILTER(s) associated with this IJoinNode. Such filters will be run with the JOIN for this statement pattern. As such, they MUST NOT rely on materialization of variables which would not have been bound before that JOIN.

Specified by:

getAttachedJoinFilters in interface IJoinNode

Returns:

The attached join filters and never null (it may return an empty list)(.

See Also:

ASTSimpleOptionalOptimizer, ASTAttachJoinFiltersOptimizer

setAttachedJoinFilters

public final void setAttachedJoinFilters(List<FilterNode> filters)

Specified by:

setAttachedJoinFilters in interface IJoinNode

toString

public String toString(int indent)

The contract of this method at this level is under-specified. Sub-classes may choose between: - return a string representation of the object, similar to the use of CoreBaseBOp.toString() Or: - return a pretty-print representation of the object with indent Note that the former contract may or may not include recursive descent through a tree-like object, whereas the latter almost certainly does.

Overridden to also report the SubqueryRoot.Annotations.RUN_ONCE annotation.

Specified by:

toString in interface BOp

Specified by:

toString in interface IQueryNode

Overrides:

toString in class QueryBase

Returns: