com.sleepycat.persist.evolve

Class EntityConverter

java.lang.Object

com.sleepycat.persist.evolve.Mutation

com.sleepycat.persist.evolve.Converter

com.sleepycat.persist.evolve.EntityConverter

All Implemented Interfaces:

java.io.Serializable

public class EntityConverter
extends Converter

A subclass of Converter that allows specifying keys to be deleted.

When a Converter is used with an entity class, secondary keys cannot be automatically deleted based on field deletion, because field Deleter objects are not used in conjunction with a Converter mutation. The EntityConverter can be used instead of a plain Converter to specify the key names to be deleted.

It is not currently possible to rename or insert secondary keys when using a Converter mutation with an entity class.

Author:

Mark Hayes

See Also:

Converter, Class Evolution, Serialized Form

Constructor Summary

Constructors

Constructor and Description
EntityConverter(java.lang.String entityClassName, int classVersion, Conversion conversion, java.util.Set<java.lang.String> deletedKeys) Creates a mutation for converting all instances of the given entity class version to the current version of the class.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object other) Returns true if the deleted and renamed keys are equal in this object and given object, and if the Converter.equals(java.lang.Object) superclass method returns true.
java.util.Set<java.lang.String>	getDeletedKeys() Returns the set of key names that are to be deleted.
int	hashCode()
java.lang.String	toString()

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

getConversion

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

EntityConverter

public EntityConverter(java.lang.String entityClassName,
                       int classVersion,
                       Conversion conversion,
                       java.util.Set<java.lang.String> deletedKeys)

Creates a mutation for converting all instances of the given entity class version to the current version of the class.

Parameters:

entityClassName - the entity class to which this mutation applies.

classVersion - the class version to which this mutation applies.

conversion - converter instance.

deletedKeys - the set of key names that are to be deleted.

Method Detail

getDeletedKeys

public java.util.Set<java.lang.String> getDeletedKeys()

Returns the set of key names that are to be deleted.

Returns:

the set of key names that are to be deleted.

equals

public boolean equals(java.lang.Object other)

Returns true if the deleted and renamed keys are equal in this object and given object, and if the Converter.equals(java.lang.Object) superclass method returns true.

Overrides:

equals in class Converter

hashCode

public int hashCode()

Overrides:

hashCode in class Converter

toString

public java.lang.String toString()

Overrides:

toString in class Converter