org.datanucleus.identity
Class IdentityUtils

java.lang.Object
  org.datanucleus.identity.IdentityUtils

public class IdentityUtils
extends java.lang.Object

Series of utilities for handling identities of objects.

Constructor Summary

IdentityUtils()

Method Summary

static java.lang.Object	getApplicationIdentityForResultSetRow(ExecutionContext ec, AbstractClassMetaData cmd, java.lang.Class pcClass, boolean inheritanceCheck, FieldManager resultsFM) Method to return the object application identity for a row of the result set.
static java.lang.Object	getDatastoreIdentityForResultSetRow(ExecutionContext ec, AbstractClassMetaData cmd, java.lang.Class pcClass, boolean inheritanceCheck, java.lang.Object resultSet, StatementClassMapping mappingDefinition) Method to return the object datastore identity for a row of the result set.

Methods inherited from class java.lang.Object

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

Constructor Detail

IdentityUtils

public IdentityUtils()

Method Detail

getDatastoreIdentityForResultSetRow

public static java.lang.Object getDatastoreIdentityForResultSetRow(ExecutionContext ec,
                                                                   AbstractClassMetaData cmd,
                                                                   java.lang.Class pcClass,
                                                                   boolean inheritanceCheck,
                                                                   java.lang.Object resultSet,
                                                                   StatementClassMapping mappingDefinition)

Method to return the object datastore identity for a row of the result set. If the class isn't using datastore identity then returns null

Parameters:

ec - Execution Context

cmd - Metadata for the class

pcClass - The class required

inheritanceCheck - Whether need an inheritance check (may be for a subclass)

resultSet - Result set

mappingDefinition - Mapping definition for the candidate class

Returns:

The identity (if found) or null (if either not sure of inheritance, or not known).

getApplicationIdentityForResultSetRow

public static java.lang.Object getApplicationIdentityForResultSetRow(ExecutionContext ec,
                                                                     AbstractClassMetaData cmd,
                                                                     java.lang.Class pcClass,
                                                                     boolean inheritanceCheck,
                                                                     FieldManager resultsFM)

Method to return the object application identity for a row of the result set. If the class isn't using application identity then returns null

Parameters:

ec - Execution Context

cmd - Metadata for the class

pcClass - The class required

inheritanceCheck - Whether need an inheritance check (may be for a subclass)

resultsFM - FieldManager servicing the results

Returns:

The identity (if found) or null (if either not sure of inheritance, or not known).