/**
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided
* that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright
* statements and notices. Redistributions must also contain a
* copy of this document.
*
* 2. Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* 3. The name "Exolab" must not be used to endorse or promote
* products derived from this Software without prior written
* permission of Intalio, Inc. For written permission,
* please contact info@exolab.org.
*
* 4. Products derived from this Software may not be called "Exolab"
* nor may "Exolab" appear in their names without prior written
* permission of Intalio, Inc. Exolab is a registered
* trademark of Intalio, Inc.
*
* 5. Due credit should be given to the Exolab Project
* (http://www.exolab.org/).
*
* THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* INTALIO, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Copyright 1999 (C) Intalio, Inc. All Rights Reserved.
*
* $Id: BaseFactory.java 7951 2008-10-09 20:52:17Z wguttmn $
*/
package org.castor.cpa.persistence.sql.driver;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.castor.core.util.Messages;
import org.exolab.castor.jdo.engine.SQLEngine;
import org.exolab.castor.jdo.engine.nature.ClassDescriptorJDONature;
import org.exolab.castor.mapping.ClassDescriptor;
import org.exolab.castor.mapping.MappingException;
import org.exolab.castor.persist.spi.Persistence;
import org.exolab.castor.persist.spi.PersistenceFactory;
import org.exolab.castor.persist.spi.PersistenceQuery;
/**
* {@link org.exolab.castor.persist.spi.PersistenceFactory} for generic JDBC driver.
*
* @author <a href="arkin@intalio.com">Assaf Arkin</a>
* @author <a href="mailto:ferret AT frii dot com">Bruce Snyder</a>
* @version $Revision: 7951 $ $Date: 2006-04-10 16:39:24 -0600 (Mon, 10 Apr 2006) $
*/
public abstract class BaseFactory implements PersistenceFactory {
/** The <a href="http://jakarta.apache.org/commons/logging/">Jakarta
* Commons Logging</a> instance used for all logging. */
private static Log _log = LogFactory.getFactory().getInstance(BaseFactory.class);
/** Maps class descriptor to persistence engines. */
private Map _classDescriptorToPersistence = new HashMap();
/**
* {@inheritDoc}
*/
public Persistence getPersistence(final ClassDescriptor clsDesc) {
if (!(clsDesc.hasNature(ClassDescriptorJDONature.class.getName()))) {
return null;
}
try {
Persistence sqlEngine = (SQLEngine) _classDescriptorToPersistence.get(clsDesc);
if (sqlEngine == null) {
sqlEngine = new SQLEngine(clsDesc, this, null);
_classDescriptorToPersistence.put(clsDesc, sqlEngine);
}
return sqlEngine;
} catch (MappingException except) {
_log.fatal(Messages.format("jdo.fatalException", except));
return null;
}
}
/**
* Needed to process OQL queries of "CALL" type (using stored procedure
* call). This feature is specific for JDO.
*
* @param call Stored procedure call (without "{call")
* @param paramTypes The types of the query parameters
* @param javaClass The Java class of the query results
* @param fields The field names
* @param sqlTypes The field SQL types
* @return null if this feature is not supported.
*/
public PersistenceQuery getCallQuery(final String call, final Class[] paramTypes,
final Class javaClass, final String[] fields, final int[] sqlTypes) {
return null;
}
/**
* Some databases has some problems with some SQL types.
* Usually it is enough to merely replace one SQL type by another.
*
* @param sqlType The correspondent Java class for the SQL type in mapping.xml
* @return The correspondent Java class for the SQL type that should be used instead.
*/
public Class adjustSqlType(final Class sqlType) {
return sqlType;
}
/**
* Many databases don't support setNull for "WHERE fld=?" and require "WHERE fld IS NULL".
*/
public boolean supportsSetNullInWhere() {
return false;
}
}