Package com.yahoo.document.select.rule

Class VariableNode

java.lang.Object

com.yahoo.document.select.rule.VariableNode

All Implemented Interfaces:

ExpressionNode

public class VariableNode
extends java.lang.Object
implements ExpressionNode

Author:

Simon Thoresen Hult

Constructor Summary

Constructors

Constructor	Description
VariableNode(java.lang.String value)

Method Summary

Modifier and Type	Method	Description
void	accept(Visitor visitor)	Perform visitation of this node.
java.lang.Object	evaluate(Context context)	Evaluate the content of this node based on document object, and return that value.
BucketSet	getBucketSet(BucketIdFactory factory)	Returns the set of bucket ids covered by this node.
OrderingSpecification	getOrdering(int order)	If this document selection implies a specific ordering (using the orderdoc scheme), return that specification.
java.lang.Object	getValue()
VariableNode	setValue(java.lang.String value)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

VariableNode

public VariableNode(java.lang.String value)

Method Detail

getValue

public java.lang.Object getValue()

setValue

public VariableNode setValue(java.lang.String value)

getBucketSet

public BucketSet getBucketSet(BucketIdFactory factory)

Description copied from interface: ExpressionNode

Returns the set of bucket ids covered by this node.

Specified by:

getBucketSet in interface ExpressionNode

Parameters:

factory - The factory used by the current application.

evaluate

public java.lang.Object evaluate(Context context)

Description copied from interface: ExpressionNode

Evaluate the content of this node based on document object, and return that value.

Specified by:

evaluate in interface ExpressionNode

Parameters:

context - The document to evaluate over.

Returns:

The value of this.

accept

public void accept(Visitor visitor)

Description copied from interface: ExpressionNode

Perform visitation of this node.

Specified by:

accept in interface ExpressionNode

Parameters:

visitor - The visitor that wishes to visit the node.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getOrdering

public OrderingSpecification getOrdering(int order)

Description copied from interface: ExpressionNode

If this document selection implies a specific ordering (using the orderdoc scheme), return that specification.

Specified by:

getOrdering in interface ExpressionNode

Parameters:

order - The order in which we are looking to traverse the ordering (ASCENDING or DESCENDING)