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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
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****************************************************************/
package org.apache.cayenne.project;
import java.io.File;
import javax.sql.DataSource;
import org.apache.cayenne.ConfigurationException;
import org.apache.cayenne.conf.Configuration;
import org.apache.cayenne.conf.DataSourceFactory;
import org.apache.cayenne.conf.DriverDataSourceFactory;
import org.apache.cayenne.conn.DataSourceInfo;
/**
* Factory of DataSource objects used by the project model. Always tries to locate file
* with direct connection info.
*
*/
public class ProjectDataSourceFactory implements DataSourceFactory {
protected File projectDir;
protected boolean loadFromXML;
protected Configuration parentConfiguration;
public ProjectDataSourceFactory(File projectDir) {
this.projectDir = projectDir;
}
public ProjectDataSourceFactory(File projectDir, boolean loadFromXML) {
this.projectDir = projectDir;
this.loadFromXML = loadFromXML;
}
public void initializeWithParentConfiguration(Configuration parentConfiguration) {
this.parentConfiguration = parentConfiguration;
}
public DataSource getDataSource(String location) throws Exception {
return new ProjectDataSource(getDriverInfo(location));
}
/**
* Returns a {@link DataSourceInfo} object, loading it from XML file if the factory is
* configured to do so.
*/
protected DataSourceInfo getDriverInfo(String location) throws Exception {
DataSourceInfo info = null;
if (loadFromXML) {
try {
info = new XMLConfigLoader().loadDriverInfo(location);
}
catch (ConfigurationException e) {
// ignoring...
}
}
return info != null ? info : new DataSourceInfo();
}
// a helper class that exposes non public methods of DriverDataSourceFactory to load
// DS XML
final class XMLConfigLoader extends DriverDataSourceFactory {
XMLConfigLoader() throws Exception {
super();
initializeWithParentConfiguration(ProjectDataSourceFactory.this.parentConfiguration);
}
DataSourceInfo loadDriverInfo(String location) throws Exception {
load(location);
return driverInfo;
}
}
}