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/**
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* Licensed 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 under the License.
*/
package org.apache.tuscany.das.rdb.impl;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import org.apache.tuscany.das.rdb.ApplyChangesCommand;
import org.apache.tuscany.das.rdb.Command;
import org.apache.tuscany.das.rdb.Key;
import org.apache.tuscany.das.rdb.config.Config;
import org.apache.tuscany.das.rdb.config.ConnectionProperties;
import org.apache.tuscany.das.rdb.config.impl.ConfigPackageImpl;
import org.apache.tuscany.das.rdb.util.DebugUtil;
import commonj.sdo.DataObject;
import commonj.sdo.Type;
import commonj.sdo.helper.XMLDocument;
import commonj.sdo.helper.XMLHelper;
/**
*
*/
public class ApplyChangesCommandImpl implements ApplyChangesCommand {
private ConnectionImpl dasConnection;
private static final boolean debug = false;
private ChangeSummarizer summarizer = new ChangeSummarizer();
public ApplyChangesCommandImpl() {
// Empty Constructor
}
// IOException is recoverable, needs to be thrown
public ApplyChangesCommandImpl(InputStream mappingModel) throws IOException {
setMapping(mappingModel);
}
public ApplyChangesCommandImpl(Config mappingModel){
summarizer.setMapping(mappingModel);
//TODO - Really need to refactor the Command framework. ReadCommand and ApplychangesCommand should
// be using the same approach to set connection and should probably share the same initialization.
// if (mappingModel.getConnectionProperties() != null)
// setConnection(mappingModel.getConnectionProperties());
}
public void setConnection(Connection connection) {
setConnection(new ConnectionImpl(connection));
}
public void setConnection(Connection connection, boolean manageTransaction) {
ConnectionImpl c = new ConnectionImpl(connection);
c.setManageTransactions(manageTransaction);
setConnection(c);
}
public void setConnection(ConnectionImpl connection) {
dasConnection = connection;
summarizer.setConnection(connection);
}
public void setConnection(ConnectionProperties c) {
try {
Connection connection = null;
Class.forName(c.getDriverClassName());
if (c.getDriverUserName() == null)
connection = DriverManager.getConnection(c.getDriverURL());
else
connection = DriverManager.getConnection(c.getDriverURL(), c.getDriverUserName(), c.getDriverPassword());
connection.setAutoCommit(false);
setConnection(connection);
} catch (Exception ex) {
throw new RuntimeException(ex);
}
}
public void addCreateCommand(Type type, Command cmd) {
summarizer.addCreateCommand(type, cmd);
((CommandImpl) cmd).setConnection(dasConnection);
}
public void addUpdateCommand(Type type, Command cmd) {
// DebugUtil.debugln(getClass(), debug, "Adding update command for type
// " + type.getName());
summarizer.addUpdateCommand(type, cmd);
((CommandImpl) cmd).setConnection(dasConnection);
}
public void addDeleteCommand(Type type, Command cmd) {
summarizer.addDeleteCommand(type, cmd);
((CommandImpl) cmd).setConnection(dasConnection);
}
public void execute(DataObject root) {
DebugUtil.debugln(getClass(), debug, "Executing ApplyChangesCmd");
if (dasConnection == null)
throw new RuntimeException("A connection must be provided");
if (!root.equals(root.getDataGraph().getRootObject()))
throw new RuntimeException("'root' argument must be the root of the datagraph");
Changes changes = summarizer.loadChanges(root);
boolean success = false;
try {
changes.execute();
success = true;
} finally {
if (success)
dasConnection.cleanUp();
else
dasConnection.errorCleanUp();
}
}
public void setMapping(InputStream stream) throws IOException {
XMLHelper helper = XMLHelper.INSTANCE;
ConfigPackageImpl impl = ConfigPackageImpl.eINSTANCE;
XMLDocument doc = helper.load(stream);
Config mapping = (Config) doc.getRootObject();
summarizer.setMapping(mapping);
if (mapping.getConnectionProperties() != null)
setConnection(mapping.getConnectionProperties());
}
public void addRelationship(String parent, String child) {
summarizer.addRelationship(parent, child);
}
public void addPrimaryKey(String columnName) {
summarizer.addPrimaryKey(columnName);
}
public void addCollisionColumn(String columnName) {
summarizer.addCollisionColumn(columnName);
}
public void addRelationship(Key parentKey, Key childKey) {
throw new RuntimeException("Not Implemented");
}
public void addPrimaryKey(Key key) {
summarizer.addPrimarykey(key);
}
public void addGeneratedPrimaryKey(String columnName) {
summarizer.addGeneratedPrimaryKey(columnName);
}
public void addConverter(String name, String converterName) {
summarizer.addConverter(name, converterName);
}
}
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