org.openrdf.query.algebra
Class NAryValueOperator

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

All Implemented Interfaces:

Cloneable, QueryModelNode, ValueExpr

Direct Known Subclasses:

Coalesce

public abstract class NAryValueOperator
extends QueryModelNodeBase
implements ValueExpr

An abstract superclass for N-ary value operators.

Author:

Jeen

Field Summary

protected List<ValueExpr>

args The operator's arguments.

Constructor Summary

NAryValueOperator()

NAryValueOperator(List<ValueExpr> args)
Creates a new N-Ary value operator.

Method Summary

void	addArgument(ValueExpr arg)
NAryValueOperator	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.
List<ValueExpr>	getArguments()
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	setArguments(List<ValueExpr> args)
<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, visit

Field Detail

args

protected List<ValueExpr> args

The operator's arguments.

Constructor Detail

NAryValueOperator

public NAryValueOperator()

NAryValueOperator

public NAryValueOperator(List<ValueExpr> args)

Creates a new N-Ary value operator.

Parameters:

args - The operator's list of arguments, must not be null.

Method Detail

setArguments

public void setArguments(List<ValueExpr> args)

getArguments

public List<ValueExpr> getArguments()

addArgument

public void addArgument(ValueExpr arg)

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 NAryValueOperator 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.