com.gridsystems.beanfilter
Class BooleanNode

java.lang.Object
  com.gridsystems.beanfilter.EvalValue
      com.gridsystems.beanfilter.EvalNode
          com.gridsystems.beanfilter.BooleanNode

public class BooleanNode
extends EvalNode

Node that evaluates its internal node as if it is a boolean value.

This node allows the use of boolean fields in the expression, like:

(field = True) ---> (field)

The evaluation result depends on the internal node value type:

• BOOLEAN: (value = True)
• NUMBER: (value <> 0)
• STRING: (value <> '')
• COLLECTION: (value not empty)

Version:

1.0

Author:

Rodrigo Ruiz

Field Summary

Fields inherited from class com.gridsystems.beanfilter.EvalValue

BOOLEAN, COLLECTION, NUMBER, STRING, UNKNOWN, VOID

Constructor Summary

BooleanNode(EvalValue value)
Creates a new instance.

Method Summary

boolean	eval(java.lang.Object src) Evaluates the node.
java.lang.String	toString()

Methods inherited from class com.gridsystems.beanfilter.EvalNode

getClassValue, getValue

Methods inherited from class com.gridsystems.beanfilter.EvalValue

getCharPos, getLinePos

Methods inherited from class java.lang.Object

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

Constructor Detail

BooleanNode

public BooleanNode(EvalValue value)

Creates a new instance.

Parameters:

value - The value to evaluate as a boolean

Method Detail

eval

public boolean eval(java.lang.Object src)
             throws EvalException

Evaluates the node.

Specified by:

eval in class EvalNode

Parameters:

src - Data source, for dynamic nodes

Returns:

true if src makes true the node

Throws:

EvalException - If an error occurs

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object