org.progeeks.graph
Class ObjectFieldPredicate

java.lang.Object
  org.progeeks.graph.ObjectFieldPredicate

All Implemented Interfaces:

java.io.Serializable, org.apache.commons.collections.Predicate

public class ObjectFieldPredicate
extends java.lang.Object
implements org.apache.commons.collections.Predicate, java.io.Serializable

Predicate that evaluates based on objectClass instance, if specified, as well as field=value inspection, also if specified.

Version:

$Revision: 1.7 $

Author:

Dave Garvis

See Also:

Serialized Form

Constructor Summary

ObjectFieldPredicate()

ObjectFieldPredicate(java.lang.Class objectClass)

ObjectFieldPredicate(java.lang.Class objectClass, java.lang.String field, java.lang.Object value)

ObjectFieldPredicate(java.lang.String field, java.lang.Object value)

Method Summary

boolean	equals(java.lang.Object obj)
boolean	evaluate(java.lang.Object node) Returns true if the specified node is of type objectClass and/or its value matches that which is define in the value and >code>field members.
java.lang.String	getFieldName() Returns the field name for this predicate.
java.lang.Class	getObjectClass() Returns the class for this predicate.
java.lang.Object	getValue() Returns the value associated with the field of this predicate.
int	hashCode()
void	setFieldName(java.lang.String field) Sets the field name for this predicate.
void	setObjectClass(java.lang.Class c) Sets the class for this predicate.
void	setValue(java.lang.Object value) Sets the value associated with the field of this predicate.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ObjectFieldPredicate

public ObjectFieldPredicate()

ObjectFieldPredicate

public ObjectFieldPredicate(java.lang.Class objectClass)

ObjectFieldPredicate

public ObjectFieldPredicate(java.lang.String field,
                            java.lang.Object value)

ObjectFieldPredicate

public ObjectFieldPredicate(java.lang.Class objectClass,
                            java.lang.String field,
                            java.lang.Object value)

Method Detail

getObjectClass

public java.lang.Class getObjectClass()

Returns the class for this predicate.

setObjectClass

public void setObjectClass(java.lang.Class c)

Sets the class for this predicate.

getFieldName

public java.lang.String getFieldName()

Returns the field name for this predicate.

setFieldName

public void setFieldName(java.lang.String field)

Sets the field name for this predicate.

getValue

public java.lang.Object getValue()

Returns the value associated with the field of this predicate.

setValue

public void setValue(java.lang.Object value)

Sets the value associated with the field of this predicate.

evaluate

public boolean evaluate(java.lang.Object node)

Returns true if the specified node is of type objectClass and/or its value matches that which is define in the value and >code>field members.
Evaluation happens as follows:

• objectClass: If this is set, the object will be evaluated on the basis that it is an instance of the objectClass type.
• field: If this is set, and provided the object to be evaluated has this property, the data contained in value will be used as a final determinent of the evaluation. null is considered valid data in the value member.
• value: If this is set and field is not set, then the passed in node is equals() compared with the value.

Specified by:

evaluate in interface org.apache.commons.collections.Predicate

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object