JDBCUpdateCommand (JBoss Server API) - JBoss 3.2.7 server API Documentation 英文版文档

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org.jboss.ejb.plugins.jaws.jdbc
Class JDBCUpdateCommand

java.lang.Object
  org.jboss.ejb.plugins.jaws.jdbc.JDBCCommand
      org.jboss.ejb.plugins.jaws.jdbc.JDBCUpdateCommand

Direct Known Subclasses:: JDBCCreateEntityCommand, JDBCDestroyCommand, JDBCInitCommand, JDBCRemoveEntityCommand, JDBCStoreEntityCommand

public abstract class JDBCUpdateCommand
extends JDBCCommand

Abstract superclass for all JAWS Commands that issue JDBC updates directly. Provides a Template Method implementation for executeStatementAndHandleResult.

Version:

$Revision: 1.8 $

Revisions:

20010812 vincent.harcq@hubmethods.com:

Get Rid of debug flag, use log4j instead

Author:

Justin Forder

Field Summary

Fields inherited from class org.jboss.ejb.plugins.jaws.jdbc.JDBCCommand

factory, jawsEntity, name

Constructor Summary

protected JDBCUpdateCommand(JDBCCommandFactory factory, String name)
          Pass the arguments on to the superclass constructor.

Method Summary

protected Object executeStatementAndHandleResult(PreparedStatement stmt, Object argOrArgs)
          Template Method that executes the PreparedStatement and calls handleResult on the integer result.

protected abstract Object handleResult(int rowsAffected, Object argOrArgs)
          Handle the result of successful execution of the update.

Methods inherited from class org.jboss.ejb.plugins.jaws.jdbc.JDBCCommand

getCMPFieldValue, getConnection, getJawsCMPFieldJDBCType, getJDBCType, getJDBCTypeName, getName, getPkColumnList, getPkColumnWhereList, getPkFieldValue, getResultObject, getResultObject, getSQL, getState, isBinaryType, jdbcExecute, setCMPFieldValue, setParameter, setParameters, setPrimaryKeyParameters, setSQL

Methods inherited from class java.lang.Object

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

Constructor Detail

JDBCUpdateCommand

protected JDBCUpdateCommand(JDBCCommandFactory factory,
                            String name)

Pass the arguments on to the superclass constructor.

Method Detail

executeStatementAndHandleResult

protected Object executeStatementAndHandleResult(PreparedStatement stmt,
                                                 Object argOrArgs)
                                          throws Exception

Template Method that executes the PreparedStatement and calls handleResult on the integer result.

Specified by:: executeStatementAndHandleResult in class JDBCCommand

Parameters:: stmt - the prepared statement, with its parameters already set.; argOrArgs - argument or array of arguments passed in from subclass execute method.
Returns:: the result from handleResult.
Throws:: Exception - if execution or result handling fails.

handleResult

protected abstract Object handleResult(int rowsAffected,
                                       Object argOrArgs)
                                throws Exception

Handle the result of successful execution of the update.

Parameters:: argOrArgs - argument or array of arguments passed in from subclass execute method.
Returns:: any result needed by the subclass execute.
Throws:: Exception - if result handling fails.