package org.hibernate.id.insert;
import org.hibernate.id.PostInsertIdentityPersister;
import org.hibernate.engine.SessionImplementor;
import org.hibernate.exception.JDBCExceptionHelper;
import org.hibernate.pretty.MessageHelper;
import java.io.Serializable;
import java.sql.PreparedStatement;
import java.sql.SQLException;
/**
* Abstract InsertGeneratedIdentifierDelegate implementation where the
* underlying strategy causes the enerated identitifer to be returned as an
* effect of performing the insert statement. Thus, there is no need for an
* additional sql statement to determine the generated identitifer.
*
* @author Steve Ebersole
*/
public abstract class AbstractReturningDelegate implements InsertGeneratedIdentifierDelegate {
private final PostInsertIdentityPersister persister;
public AbstractReturningDelegate(PostInsertIdentityPersister persister) {
this.persister = persister;
}
public final Serializable performInsert(String insertSQL, SessionImplementor session, Binder binder) {
try {
// prepare and execute the insert
PreparedStatement insert = prepare( insertSQL, session );
try {
binder.bindValues( insert );
return executeAndExtract( insert );
}
finally {
releaseStatement( insert, session );
}
}
catch ( SQLException sqle ) {
throw JDBCExceptionHelper.convert(
session.getFactory().getSQLExceptionConverter(),
sqle,
"could not insert: " + MessageHelper.infoString( persister ),
insertSQL
);
}
}
protected PostInsertIdentityPersister getPersister() {
return persister;
}
protected abstract PreparedStatement prepare(String insertSQL, SessionImplementor session) throws SQLException;
protected abstract Serializable executeAndExtract(PreparedStatement insert) throws SQLException;
protected void releaseStatement(PreparedStatement insert, SessionImplementor session) throws SQLException {
session.getBatcher().closeStatement( insert );
}
}
|