com.bigdata.rdf.sparql.ast

Class AbstractStatementContainer<E extends IStatementContainer>

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.GroupMemberNodeBase<E>

com.bigdata.rdf.sparql.ast.GroupNodeBase<E>

com.bigdata.rdf.sparql.ast.AbstractStatementContainer<E>

All Implemented Interfaces:

BOp, IGroupMemberNode, IGroupNode<E>, IQueryNode, IVariableBindingRequirements, IPropertySet, Serializable, Cloneable, Iterable<E>

Direct Known Subclasses:

ConstructNode, QuadData

public class AbstractStatementContainer<E extends IStatementContainer>
extends GroupNodeBase<E>

Recursive container for ground StatementPatternNodes. This is used for InsertData and DeleteData.

Version:

$Id$

Author:

Bryan Thompson

See Also:

Serialized Form

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
AbstractStatementContainer()
AbstractStatementContainer(AbstractStatementContainer<E> op)
AbstractStatementContainer(BOp[] args, Map<String,Object> anns)

Method Summary

Methods

Modifier and Type	Method and Description
Set<IVariable<?>>	getDesiredBound(StaticAnalysis sa) Get variables that are not required to be bound, but desired in the sense that we want them to be bound when evaluating the construct.
Set<IVariable<?>>	getRequiredBound(StaticAnalysis sa) Return the variables used in the node that *must* be bound prior to evaluating the node.

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

addArg, addArg, addChild, clone, getAttachedJoinFilters, getChildren, isEmpty, iterator, removeArg, removeChild, replaceWith, setArg, setAttachedJoinFilters, size, toString

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

getContext, getParent, getParentGraphPatternGroup, getParentJoinGroup, setParent

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

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

Methods inherited from class com.bigdata.bop.CoreBaseBOp

annotationsEqual, annotationsToString, annotationsToString, annotationValueToString, checkArgs, 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.rdf.sparql.ast.IGroupMemberNode

getContext, getParent, getParentGraphPatternGroup, getParentJoinGroup, setParent

Methods inherited from interface com.bigdata.bop.BOp

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

Methods inherited from interface cutthecrap.utils.striterators.IPropertySet

getProperty

Constructor Detail

AbstractStatementContainer

public AbstractStatementContainer()

AbstractStatementContainer

public AbstractStatementContainer(AbstractStatementContainer<E> op)

Parameters:

op -

AbstractStatementContainer

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

Parameters:

args -

anns -

Method Detail

getRequiredBound

public Set<IVariable<?>> getRequiredBound(StaticAnalysis sa)

Description copied from interface: IVariableBindingRequirements

Return the variables used in the node that *must* be bound prior to evaluating the node. For instance, when evaluation a SPARQL 1.1 service and the endpoint is specified through a variable, then this variable must be bound in order to identify the endpoint to which the query is to be sent. By *must* be bound we mean that, if it is possible to bring the variables in a join group in order such that they are bound when executing the construct (e.g., think of a FILTER), then we *must* consider that. However, when the IVariableBindingRequirements#getRequiredBound() interface cannot be satisified, the query may still be valid and return results (for the SPARQL 1.1 service example mentioned above, it may not, for the FILTER it may). The set of these variables must be disjoint from IVariableBindingRequirements#getRequiredUnound().

Returns:

the set of variables that must be bound prior to evaluation

getDesiredBound

public Set<IVariable<?>> getDesiredBound(StaticAnalysis sa)

Description copied from interface: IVariableBindingRequirements

Get variables that are not required to be bound, but desired in the sense that we want them to be bound when evaluating the construct. In general, the more variables are bound, the better, but this might differ for certain constructs. Should only report variables that are *not* reported through method IVariableBindingRequirements.getRequiredBound(StaticAnalysis).

Returns:

the set of variables that are desires to be bound, but not required