com.justhis.jdo
Class JDOUtil

java.lang.Object
  com.justhis.jdo.JDOUtil

public class JDOUtil

extends java.lang.Object

????Java Data Object????????

Version:

$Revision: 1.1 $

Author:

acai

Method Summary

static void	createObject(javax.jdo.PersistenceManager pm, java.lang.Object obj) create a persistence object into database by PersistenceManager.
static void	createObject(javax.jdo.Transaction transaction, java.lang.Object obj) create a persistence object by transaction, through createObject(pm,obj) to persistence object in fact.
static void	deleteObject(javax.jdo.PersistenceManager pm, java.lang.Class clazz, java.lang.String objId) delete object from Persistence Manager .
static void	deleteObject(javax.jdo.Transaction transaction, java.lang.Class clazz, java.lang.String objId) delete JDO object from persistence manager
static java.lang.Object	findObjectById(javax.jdo.PersistenceManager pm, java.lang.Class clazz, java.lang.String id) search JDO Object from persistence manager by JDO object ID .
static java.lang.Object	findObjectById(javax.jdo.Transaction transaction, java.lang.Class clazz, java.lang.String objId) search JDO object from persistence manager by JDO transaction.
static java.util.Collection	findObjList(javax.jdo.PersistenceManager pm, java.lang.Class cs) find a jdo object list by class name.
static java.util.Collection	findObjList(javax.jdo.PersistenceManager pm, java.lang.Class cs, java.lang.String order) find jdo object list ordered
static java.util.Collection	findObjList(javax.jdo.PersistenceManager pm, java.lang.Class cs, java.lang.String order, java.lang.String filter) find collection of java data object list by filter and order.

Methods inherited from class java.lang.Object

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

Method Detail

createObject

public static void createObject(javax.jdo.PersistenceManager pm,
                                java.lang.Object obj)

create a persistence object into database by PersistenceManager.

Parameters:

pm - a persistence manager

obj - needed persistence object

createObject

public static void createObject(javax.jdo.Transaction transaction,
                                java.lang.Object obj)

create a persistence object by transaction, through createObject(pm,obj) to persistence object in fact.

Parameters:

transaction - database transaction

obj - needed persistence object

See Also:

createObject(javax.jdo.PersistenceManager,java.lang.Object)

deleteObject

public static void deleteObject(javax.jdo.PersistenceManager pm,
                                java.lang.Class clazz,
                                java.lang.String objId)
                         throws UtilException

delete object from Persistence Manager .

Parameters:

pm - JDO persistence Manager.

clazz - a class name.

objId - persistence object id.

Throws:

UtilException - if delete from persistence manager occur any error.

deleteObject

public static void deleteObject(javax.jdo.Transaction transaction,
                                java.lang.Class clazz,
                                java.lang.String objId)
                         throws UtilException

delete JDO object from persistence manager

Parameters:

transaction - JDO transaction

clazz - an object class name

objId - JDO object id.

Throws:

UtilException - occur any error.

findObjList

public static java.util.Collection findObjList(javax.jdo.PersistenceManager pm,
                                               java.lang.Class cs)
                                        throws UtilException

find a jdo object list by class name.

Parameters:

pm - persistence manager

cs - class name

Returns:

collection of jdo object

Throws:

UtilException - if any exception occurs

findObjList

public static java.util.Collection findObjList(javax.jdo.PersistenceManager pm,
                                               java.lang.Class cs,
                                               java.lang.String order)
                                        throws UtilException

find jdo object list ordered

Parameters:

pm - persistence manager

cs - class name

order - order name

Returns:

a collection of jdo object

Throws:

UtilException - if any exception occurs.

findObjList

public static java.util.Collection findObjList(javax.jdo.PersistenceManager pm,
                                               java.lang.Class cs,
                                               java.lang.String order,
                                               java.lang.String filter)
                                        throws UtilException

find collection of java data object list by filter and order.

Parameters:

pm - persistence manager

cs - JDO object class name

order - order name

filter - filter expression

Returns:

collection of java data object

Throws:

UtilException - if any exception occurs.

findObjectById

public static java.lang.Object findObjectById(javax.jdo.Transaction transaction,
                                              java.lang.Class clazz,
                                              java.lang.String objId)
                                       throws UtilException

search JDO object from persistence manager by JDO transaction.

Parameters:

transaction - JDO transaction

clazz - a JDO object class name

objId - a JDO object id string

Returns:

an jdo object

Throws:

UtilException - if occur any error.

findObjectById

public static java.lang.Object findObjectById(javax.jdo.PersistenceManager pm,
                                              java.lang.Class clazz,
                                              java.lang.String id)
                                       throws UtilException

search JDO Object from persistence manager by JDO object ID .

Parameters:

pm - persistence manager

clazz - JDO object class name

id - a string of jdo object id

Returns:

a JDO object

Throws:

UtilException - if any exception occur