org.acegisecurity.acls.objectidentity
Class ObjectIdentityImpl

java.lang.Object
  extended by org.acegisecurity.acls.objectidentity.ObjectIdentityImpl
All Implemented Interfaces:
java.io.Serializable, ObjectIdentity

public class ObjectIdentityImpl
extends java.lang.Object
implements ObjectIdentity

Simple implementation of AclObjectIdentity.

Uses Strings to store the identity of the domain object instance. Also offers a constructor that uses reflection to build the identity information.

See Also:
Serialized Form

Constructor Summary
ObjectIdentityImpl(java.lang.Class javaType, java.io.Serializable identifier)
           
ObjectIdentityImpl(java.lang.Object object)
          Creates the ObjectIdentityImpl based on the passed object instance.
ObjectIdentityImpl(java.lang.String javaType, java.io.Serializable identifier)
           
 
Method Summary
 boolean equals(java.lang.Object arg0)
          Important so caching operates properly.
 java.io.Serializable getIdentifier()
          Obtains the actual identifier.
 java.lang.Class getJavaType()
          Obtains the Java type represented by the domain object.
 int hashCode()
          Important so caching operates properly.
 java.lang.String toString()
           
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

ObjectIdentityImpl

public ObjectIdentityImpl(java.lang.String javaType,
                          java.io.Serializable identifier)

ObjectIdentityImpl

public ObjectIdentityImpl(java.lang.Class javaType,
                          java.io.Serializable identifier)

ObjectIdentityImpl

public ObjectIdentityImpl(java.lang.Object object)
                   throws IdentityUnavailableException
Creates the ObjectIdentityImpl based on the passed object instance. The passed object must provide a getId() method, otherwise an exception will be thrown. The object passed will be considered the javaType, so if more control is required, an alternate constructor should be used instead.

Parameters:
object - the domain object instance to create an identity for
Throws:
IdentityUnavailableException - if identity could not be extracted
Method Detail

equals

public boolean equals(java.lang.Object arg0)
Important so caching operates properly.

Considers an object of the same class equal if it has the same classname and id properties.

Specified by:
equals in interface ObjectIdentity
Overrides:
equals in class java.lang.Object
Parameters:
arg0 - object to compare
Returns:
true if the presented object matches this object

getIdentifier

public java.io.Serializable getIdentifier()
Description copied from interface: ObjectIdentity
Obtains the actual identifier. This identifier must not be reused to represent other domain objects with the same javaType.

Because ACLs are largely immutable, it is strongly recommended to use a synthetic identifier (such as a database sequence number for the primary key). Do not use an identifier with business meaning, as that business meaning may change.

Specified by:
getIdentifier in interface ObjectIdentity
Returns:
the identifier (unique within this javaType

getJavaType

public java.lang.Class getJavaType()
Description copied from interface: ObjectIdentity
Obtains the Java type represented by the domain object.

Specified by:
getJavaType in interface ObjectIdentity
Returns:
the Java type of the domain object

hashCode

public int hashCode()
Important so caching operates properly.

Specified by:
hashCode in interface ObjectIdentity
Overrides:
hashCode in class java.lang.Object
Returns:
the hash

toString

public java.lang.String toString()
Overrides:
toString in class java.lang.Object


Copyright © 2004-2011 Interface21, Inc. All Rights Reserved.