org.openrdf.sail.federation.algebra
Class NaryOperator<Expr extends QueryModelNode>

java.lang.Object
  org.openrdf.query.algebra.QueryModelNodeBase
      org.openrdf.sail.federation.algebra.NaryOperator<Expr>

All Implemented Interfaces:

Cloneable, QueryModelNode

Direct Known Subclasses:

NaryTupleOperator

public abstract class NaryOperator<Expr extends QueryModelNode>
extends QueryModelNodeBase

An abstract superclass for operators which have (zero or more) arguments.

Constructor Summary

NaryOperator()

NaryOperator(Expr... args)
Creates a new n-ary operator.

NaryOperator(List<? extends Expr> args)
Creates a new n-ary operator.

Method Summary

void	addArg(Expr arg) Sets the arguments of this n-ary operator.
void	addArgs(List<? extends Expr> args) Sets the arguments of this n-ary tuple operator.
NaryOperator<Expr>	clone()
Expr	getArg(int idx) Gets the idx-th argument of this n-ary operator.
List<? extends Expr>	getArgs() Gets the arguments of this n-ary operator.
int	getNumberOfArguments() Gets the number of arguments of this n-ary operator.
boolean	removeArg(Expr arg)
void	replaceChildNode(QueryModelNode current, QueryModelNode replacement)
protected void	setArg(int idx, Expr arg) Sets the idx-th argument of this n-ary tuple operator.
void	setArgs(List<? extends Expr> args) Sets the arguments of this n-ary operator.
<X extends Exception> void	visitChildren(QueryModelVisitor<X> visitor)

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

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

Methods inherited from class java.lang.Object

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

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

equals, visit

Constructor Detail

NaryOperator

public NaryOperator()

NaryOperator

public NaryOperator(Expr... args)

Creates a new n-ary operator.

NaryOperator

public NaryOperator(List<? extends Expr> args)

Creates a new n-ary operator.

Method Detail

getArgs

public List<? extends Expr> getArgs()

Gets the arguments of this n-ary operator.

Returns:

A copy of the current argument list.

getNumberOfArguments

public int getNumberOfArguments()

Gets the number of arguments of this n-ary operator.

Returns:

The number of arguments.

getArg

public Expr getArg(int idx)

Gets the idx-th argument of this n-ary operator.

Returns:

The operator's arguments.

addArgs

public void addArgs(List<? extends Expr> args)

Sets the arguments of this n-ary tuple operator.

addArg

public void addArg(Expr arg)

Sets the arguments of this n-ary operator.

setArgs

public void setArgs(List<? extends Expr> args)

Sets the arguments of this n-ary operator.

setArg

protected void setArg(int idx,
                      Expr arg)

Sets the idx-th argument of this n-ary tuple operator.

removeArg

public boolean removeArg(Expr arg)

visitChildren

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

Specified by:

visitChildren in interface QueryModelNode

Overrides:

visitChildren in class QueryModelNodeBase

Throws:

X extends Exception

replaceChildNode

public void replaceChildNode(QueryModelNode current,
                             QueryModelNode replacement)

Specified by:

replaceChildNode in interface QueryModelNode

Overrides:

replaceChildNode in class QueryModelNodeBase

clone

public NaryOperator<Expr> clone()

Specified by:

clone in interface QueryModelNode

Overrides:

clone in class QueryModelNodeBase