org.openrdf.query.algebra
Class Bound

java.lang.Object
  org.openrdf.query.algebra.QueryModelNodeBase
      org.openrdf.query.algebra.Bound

All Implemented Interfaces:

Cloneable, QueryModelNode, ValueExpr

public class Bound
extends QueryModelNodeBase
implements ValueExpr

The BOUND function, as defined in SPARQL Query Language for RDF; checks if a variable is bound.

Author:

Arjohn Kampman

Field Summary

protected Var

arg The operator's argument.

Constructor Summary

Bound()

Bound(Var arg)

Method Summary

Bound	clone() Returns a (deep) clone of this query model node.
boolean	equals(Object other) Returns true if this query model node and its children are recursively equal to o and its children.
Var	getArg() Gets the argument of this unary value operator.
int	hashCode()
void	replaceChildNode(QueryModelNode current, QueryModelNode replacement) Default implementation of QueryModelNode.replaceChildNode(QueryModelNode, QueryModelNode) that throws an IllegalArgumentException indicating that current is not a child node of this node.
void	setArg(Var arg) Sets the argument of this unary value operator.
<X extends Exception> void	visit(QueryModelVisitor<X> visitor) Visits this node.
<X extends Exception> void	visitChildren(QueryModelVisitor<X> visitor) Dummy implementation of QueryModelNode.visitChildren(org.openrdf.query.algebra.QueryModelVisitor) that does nothing.

Methods inherited from class org.openrdf.query.algebra.QueryModelNodeBase

getParentNode, getSignature, nullEquals, replaceNodeInList, replaceWith, setParentNode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.openrdf.query.algebra.QueryModelNode

getParentNode, getSignature, replaceWith, setParentNode, toString

Field Detail

arg

protected Var arg

The operator's argument.

Constructor Detail

Bound

public Bound()

Bound

public Bound(Var arg)

Method Detail

getArg

public Var getArg()

Gets the argument of this unary value operator.

Returns:

The operator's argument.

setArg

public void setArg(Var arg)

Sets the argument of this unary value operator.

Parameters:

arg - The (new) argument for this operator, must not be null.

visit

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

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 extends Exception

visitChildren

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

Description copied from class: QueryModelNodeBase

Dummy implementation of QueryModelNode.visitChildren(org.openrdf.query.algebra.QueryModelVisitor) that does nothing. Subclasses should override this method when they have child nodes.

Specified by:

visitChildren in interface QueryModelNode

Overrides:

visitChildren in class QueryModelNodeBase

Throws:

X extends Exception

replaceChildNode

public void replaceChildNode(QueryModelNode current,
                             QueryModelNode replacement)

Description copied from class: QueryModelNodeBase

Default implementation of QueryModelNode.replaceChildNode(QueryModelNode, QueryModelNode) that throws an IllegalArgumentException indicating that current is not a child node of this node.

Specified by:

replaceChildNode in interface QueryModelNode

Overrides:

replaceChildNode in class QueryModelNodeBase

Parameters:

current - The current child node.

replacement - The new child node.

equals

public boolean equals(Object other)

Description copied from interface: QueryModelNode

Returns true if this query model node and its children are recursively equal to o and its children.

Specified by:

equals in interface QueryModelNode

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

clone

public Bound 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 QueryModelNodeBase

Returns:

A deep clone of this query model node.