org.jpox.store.rdbms.request
Class UpdateRequest

java.lang.Object
  org.jpox.store.rdbms.request.Request
      org.jpox.store.rdbms.request.UpdateRequest

public class UpdateRequest
extends Request

Class to provide a means of update of records in a data store. Extends basic request class implementing the execute method to do a JDBC update operation.

Version:

$Revision: 1.45 $

Field Summary

Fields inherited from class org.jpox.store.rdbms.request.Request

key, LOCALISER, table

Constructor Summary

UpdateRequest(DatastoreClass table, AbstractPropertyMetaData[] reqFieldMetaData, java.lang.Class cls, ClassLoaderResolver clr)
Constructor, taking the table.

Method Summary

void	execute(StateManager sm) Method performing the update of the record in the datastore.

Methods inherited from class org.jpox.store.rdbms.request.Request

executeQuery, executeUpdate, replaceParamPlaceholdersWithValues

Methods inherited from class java.lang.Object

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

Constructor Detail

UpdateRequest

public UpdateRequest(DatastoreClass table,
                     AbstractPropertyMetaData[] reqFieldMetaData,
                     java.lang.Class cls,
                     ClassLoaderResolver clr)

Constructor, taking the table. Uses the structure of the datastore table to build a basic query. The query will be of the form

 UPDATE table-name
 SET param1=?,param2=?
 WHERE param3=? AND param4=?

Parameters:

table - The Class Table representing the datastore table to update

reqFieldMetaData - MetaData of the fields to update

cls - Class of objects being updated

clr - ClassLoader resolver

Method Detail

execute

public void execute(StateManager sm)

Method performing the update of the record in the datastore. Takes the constructed update query and populates with the specific record information.

Specified by:

execute in class Request

Parameters:

sm - The state manager for the record to be updated