edu.cmu.aura.service.query.expression
Class LeafExpressionNode

java.lang.Object
  |
  +--edu.cmu.aura.service.query.ExpressionNode
        |
        +--edu.cmu.aura.service.query.expression.LeafExpressionNode

public class LeafExpressionNode

extends ExpressionNode

Constructor Summary

LeafExpressionNode()

LeafExpressionNode(LeafOperator leafOperator, java.lang.String attribName, Literal literal)

Method Summary

boolean	eval(ServiceObject sObject) NOTE: Do not use this function.
int	eval(ServiceObject sObject, java.util.ArrayList ncAttribs) NOTE: Do not use this function.
java.lang.Object	getLeftChild() Get the left child of this node.
Operator	getOperator() Get this nodes Operator.
java.lang.Object	getRightChild() Get the right child of this node.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

LeafExpressionNode

public LeafExpressionNode()

LeafExpressionNode

public LeafExpressionNode(LeafOperator leafOperator,
                          java.lang.String attribName,
                          Literal literal)

Method Detail

getOperator

public Operator getOperator()

Description copied from class: ExpressionNode

Get this nodes Operator.

Overrides:

getOperator in class ExpressionNode

Following copied from class: edu.cmu.aura.service.query.ExpressionNode

Returns:

this node's Operator.

eval

public int eval(ServiceObject sObject,
                java.util.ArrayList ncAttribs)
         throws EvaluationException

Description copied from class: ExpressionNode

NOTE: Do not use this function. It is for internal use only. Evaluate the expression at this node.

Overrides:

eval in class ExpressionNode

Following copied from class: edu.cmu.aura.service.query.ExpressionNode

Parameters:

sObject - the ServiceObject to evaluate this expression node on.

Returns:

the value obtained by evaluating this expression.

eval

public boolean eval(ServiceObject sObject)
             throws EvaluationException

Description copied from class: ExpressionNode

NOTE: Do not use this function. It is for internal use only. Evaluate the expression at this node.

Overrides:

eval in class ExpressionNode

Following copied from class: edu.cmu.aura.service.query.ExpressionNode

Parameters:

sObject - the ServiceObject to evaluate this expression node on.

Returns:

the value obtained by evaluating this expression.

getLeftChild

public java.lang.Object getLeftChild()

Description copied from class: ExpressionNode

Get the left child of this node.

Overrides:

getLeftChild in class ExpressionNode

Following copied from class: edu.cmu.aura.service.query.ExpressionNode

Returns:

the left child of this node.

getRightChild

public java.lang.Object getRightChild()

Description copied from class: ExpressionNode

Get the right child of this node.

Overrides:

getRightChild in class ExpressionNode

Following copied from class: edu.cmu.aura.service.query.ExpressionNode

Returns:

the right child of this node.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object