Package org.eclipse.rdf4j.federated.algebra

Class FilterExpr

java.lang.Object

org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode

org.eclipse.rdf4j.federated.algebra.FilterExpr

All Implemented Interfaces:

Serializable, Cloneable, FilterValueExpr, QueryModelNode, ValueExpr, VariableScopeChange

public class FilterExpr
extends AbstractQueryModelNode
implements FilterValueExpr

FilterExpr maintains information for a particular FILTER expression.

Author:

Andreas Schwarte

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected ValueExpr	expr
protected HashSet<String>	vars

Constructor Summary

Constructors

Constructor	Description
FilterExpr(ValueExpr expr, HashSet<String> vars)

Method Summary

Modifier and Type	Method	Description
FilterExpr	clone()	Returns a (deep) clone of this query model node.
ValueExpr	getExpression()
HashSet<String>	getVars()
boolean	isCompareEq()
void	replaceChildNode(QueryModelNode current, QueryModelNode replacement)	Replaces one of the child nodes with a new node.
<X extends Exception> void	visit(QueryModelVisitor<X> visitor)	Visits this node.
<X extends Exception> void	visitChildren(QueryModelVisitor<X> visitor)	Visits the children of this node.

Methods inherited from class org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode

getCardinality, getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getTotalTimeNanosActual, isCardinalitySet, isVariableScopeChange, nullEquals, replaceNodeInList, replaceWith, resetCardinality, setCardinality, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, setVariableScopeChange, shouldCacheCardinality, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.rdf4j.query.algebra.QueryModelNode

equals, getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getTotalTimeNanosActual, replaceWith, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, toString

Field Details

expr

protected ValueExpr expr

vars

protected HashSet<String> vars

Constructor Details

FilterExpr

public FilterExpr(ValueExpr expr,
 HashSet<String> vars)

Method Details

visit

public <X extends Exception> void visit(QueryModelVisitor<X> visitor)
                                 throws X

Description copied from interface: QueryModelNode

Visits this node. The node reports itself to the visitor with the proper runtime type.

Specified by:

visit in interface QueryModelNode

Throws:

X

visitChildren

public <X extends Exception> void visitChildren(QueryModelVisitor<X> visitor)
                                         throws X

Description copied from interface: QueryModelNode

Visits the children of this node. The node calls QueryModelNode.visit(QueryModelVisitor) on all of its child nodes.

Specified by:

visitChildren in interface QueryModelNode

Throws:

X

replaceChildNode

public void replaceChildNode(QueryModelNode current,
 QueryModelNode replacement)

Description copied from interface: QueryModelNode

Replaces one of the child nodes with a new node.

Specified by:

replaceChildNode in interface QueryModelNode

Parameters:

current - The current child node.

replacement - The new child node.

getExpression

public ValueExpr getExpression()

getVars

public HashSet<String> getVars()

clone

public FilterExpr clone()

Description copied from interface: QueryModelNode

Returns a (deep) clone of this query model node. This method recursively clones the entire node tree, starting from this nodes.

Specified by:

clone in interface QueryModelNode

Specified by:

clone in interface ValueExpr

Overrides:

clone in class AbstractQueryModelNode

Returns:

A deep clone of this query model node.

isCompareEq

public boolean isCompareEq()