com.sleepycat.persist.evolve
Class Renamer

java.lang.Object
  com.sleepycat.persist.evolve.Mutation
      com.sleepycat.persist.evolve.Renamer

All Implemented Interfaces:

Serializable

public class Renamer
extends Mutation

A mutation for renaming a class or field without changing the instance or field value. For example:

  package my.package;

  // The old class.  Version 0 is implied.
  //
  @Entity
  class Person {
      String name;
  }

  // The new class.  A new version number must be assigned.
  //
  @Entity(version=1)
  class Human {
      String fullName;
  }

  // Add the mutations.
  //
  Mutations mutations = new Mutations();

  mutations.addRenamer(new Renamer("my.package.Person", 0,
                                   Human.class.getName()));

  mutations.addRenamer(new Renamer("my.package.Person", 0,
                                   "name", "fullName"));

  // Configure the mutations as described here.

See Also:

Class Evolution, Serialized Form

Constructor Summary

Renamer(String fromClass, int fromVersion, String toClass)
Creates a mutation for renaming the class of all instances of the given class version.

Renamer(String declaringClass, int declaringClassVersion, String fromField, String toField)
Creates a mutation for renaming the given field for all instances of the given class version.

Method Summary

boolean	equals(Object other) Returns true if the new class name is equal in this object and given object, and if the Mutation.equals(java.lang.Object) method returns true.
String	getNewName() Returns the new class or field name specified in the constructor.
int	hashCode()
String	toString()

Methods inherited from class com.sleepycat.persist.evolve.Mutation

getClassName, getClassVersion, getFieldName

Methods inherited from class java.lang.Object

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

Constructor Detail

Renamer

public Renamer(String fromClass,
               int fromVersion,
               String toClass)

Creates a mutation for renaming the class of all instances of the given class version.

Renamer

public Renamer(String declaringClass,
               int declaringClassVersion,
               String fromField,
               String toField)

Creates a mutation for renaming the given field for all instances of the given class version.

Method Detail

getNewName

public String getNewName()

Returns the new class or field name specified in the constructor.

equals

public boolean equals(Object other)

Returns true if the new class name is equal in this object and given object, and if the Mutation.equals(java.lang.Object) method returns true.

Overrides:

equals in class Mutation

hashCode

public int hashCode()

Overrides:

hashCode in class Mutation

toString

public String toString()

Overrides:

toString in class Mutation