JDBCStoreEntityCommand (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 JDBCStoreEntityCommand

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

All Implemented Interfaces:: JPMStoreEntityCommand

public class JDBCStoreEntityCommand
extends JDBCUpdateCommand
implements JPMStoreEntityCommand

JAWSPersistenceManager JDBCStoreEntityCommand

Version:: $Revision: 1.10.2.2 $
Author:: Rickard 脰berg, Marc Fleury, Joe Shevland, Justin Forder, Sebastien Alborini
See Also:

Nested Class Summary

protected static class JDBCStoreEntityCommand.ExecutionState


Field Summary

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

factory, jawsEntity, name

Constructor Summary

JDBCStoreEntityCommand(JDBCCommandFactory factory)


Method Summary

protected boolean changed(Object current, Object old)


void execute(EntityEnterpriseContext ctx)
          if the readOnly flag is specified in the xml file this won't store.

protected String getSQL(Object argOrArgs)
          Returns dynamically-generated SQL if this entity has tuned updates, otherwise static SQL.

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

protected String makeSQL(Object argOrArgs)
          Used to create static SQL (tuned = false) or dynamic SQL (tuned = true).

protected void setParameters(PreparedStatement stmt, Object argOrArgs)
          Default implementation does nothing.

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

executeStatementAndHandleResult

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

JDBCStoreEntityCommand

public JDBCStoreEntityCommand(JDBCCommandFactory factory)

Method Detail

execute

public void execute(EntityEnterpriseContext ctx)

if the readOnly flag is specified in the xml file this won't store. if not a tuned or untuned update is issued.

Specified by:: execute in interface JPMStoreEntityCommand

getSQL

protected String getSQL(Object argOrArgs)
                 throws Exception

Returns dynamically-generated SQL if this entity has tuned updates, otherwise static SQL.

Overrides:: getSQL in class JDBCCommand

Parameters:: argOrArgs - argument or array of arguments passed in from subclass execute method.
Returns:: the SQL to use in the PreparedStatement.
Throws:: Exception - if an attempt to generate dynamic SQL results in an Exception.

setParameters

protected void setParameters(PreparedStatement stmt,
                             Object argOrArgs)
                      throws Exception

Description copied from class: JDBCCommand

Default implementation does nothing. Override if parameters need to be set.

Overrides:: setParameters in class JDBCCommand

Parameters:: stmt - the PreparedStatement which will be executed by this Command.; argOrArgs - argument or array of arguments passed in from subclass execute method.
Throws:: Exception - if parameter setting fails.

handleResult

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

Description copied from class: JDBCUpdateCommand

Handle the result of successful execution of the update.

Specified by:: handleResult in class JDBCUpdateCommand

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.

changed

protected final boolean changed(Object current,
                                Object old)

makeSQL

protected String makeSQL(Object argOrArgs)

Used to create static SQL (tuned = false) or dynamic SQL (tuned = true).