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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
* under the License.
*/
package org.apache.tuscany.sca.data.engine;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;
import org.apache.tuscany.sca.assembly.builder.impl.ProblemImpl;
import org.apache.tuscany.sca.assembly.xml.Constants;
import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
import org.apache.tuscany.sca.contribution.service.ContributionReadException;
import org.apache.tuscany.sca.contribution.service.ContributionResolveException;
import org.apache.tuscany.sca.contribution.service.ContributionWriteException;
import org.apache.tuscany.sca.data.engine.config.ConnectionInfo;
import org.apache.tuscany.sca.data.engine.config.ConnectionProperties;
import org.apache.tuscany.sca.monitor.Monitor;
import org.apache.tuscany.sca.monitor.Problem;
import org.apache.tuscany.sca.monitor.Problem.Severity;
/**
* Implements a StAX artifact processor for ConnectionInfo.
* This processor is shared between implementation.das and implementation.data component type implementations,
* and can be used for other applications that require database connectivity information.
*
* The artifact processor is responsible for processing <ConnectionInfo>
* elements in SCA assembly XML composite files.
*
* @version $Rev$ $Date$
*/
public class ConnectionInfoArtifactProcessor implements StAXArtifactProcessor<ConnectionInfo> {
public static final QName CONNECTION_INFO = new QName(Constants.SCA10_TUSCANY_NS, "connectionInfo");
private static final QName CONNECTION_PROPERTIES = new QName(Constants.SCA10_TUSCANY_NS, "connectionProperties");
private Monitor monitor;
public ConnectionInfoArtifactProcessor(ModelFactoryExtensionPoint modelFactories, Monitor monitor) {
this.monitor = monitor;
}
public QName getArtifactType() {
// Returns the QName of the XML element processed by this processor
return CONNECTION_INFO;
}
/**
* Report a exception.
*
* @param problems
* @param message
* @param model
*/
private void error(String message, Object model, Exception ex) {
if (monitor != null) {
Problem problem = new ProblemImpl(this.getClass().getName(), "dataengine-helper-validation-messages", Severity.ERROR, model, message, ex);
monitor.problem(problem);
}
}
public Class<ConnectionInfo> getModelType() {
// Returns the type of model processed by this processor
return ConnectionInfo.class;
}
/*
* <component name="CompanyDataComponent">
* <implementation.data table="company">
*
* <connectionInfo>
* <connectionProperties
* driverClass="org.apache.derby.jdbc.EmbeddedDriver"
* databaseURL="jdbc:derby:target/test-classes/dastest; create = true"
* loginTimeout="600000"/>
* </connectionInfo>
*
* </implementation.data>
* </component>
*/
public ConnectionInfo read(XMLStreamReader reader) throws ContributionReadException {
assert CONNECTION_INFO.equals(reader.getName());
// Create a ConnectionInfo from the component type model
ConnectionInfo connectionInfo = new ConnectionInfo();
/*
* <connectionInfo dataSource="jdbc:derby:target/test-classes/dastest; create = true"/>
*/
String dataSource = reader.getAttributeValue(null, "datasource"); // exclusive with connection properties
if (dataSource != null && dataSource.length() > 0) {
connectionInfo.setDataSource(dataSource);
} else {
try {
int event = reader.next();
while (event == XMLStreamConstants.CHARACTERS) {
event = reader.next();
}
} catch (XMLStreamException e) {
ContributionReadException ce = new ContributionReadException(e);
error("ContributionReadException", reader, ce);
throw ce;
}
QName element = reader.getName();
assert CONNECTION_PROPERTIES.equals(element);
/*
* <connectionProperties
* driverClass="org.apache.derby.jdbc.EmbeddedDriver"
* databaseURL="jdbc:derby:target/test-classes/dastest; create = true"
* username=""
* password=""
* loginTimeout="600000"/>
*/
String driverClass = reader.getAttributeValue(null, "driverClass");
String databaseURL = reader.getAttributeValue(null, "databaseURL");
String username = reader.getAttributeValue(null, "username");
String password = reader.getAttributeValue(null, "password");
String loginTimeout = reader.getAttributeValue(null, "loginTimeout");
// FIXME: validation sending info to monitor....
ConnectionProperties connectionProperties = new ConnectionProperties();
connectionProperties.setDriverClass(driverClass);
connectionProperties.setDatabaseURL(databaseURL);
connectionProperties.setUsername(username);
connectionProperties.setPassword(password);
if (loginTimeout != null) {
connectionProperties.setLoginTimeout(Integer.parseInt(loginTimeout));
}
connectionInfo.setConnectionProperties(connectionProperties);
}
return connectionInfo;
}
public void resolve(ConnectionInfo impl, ModelResolver resolver) throws ContributionResolveException {
}
public void write(ConnectionInfo connectionInfo, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException {
writer.writeStartElement(CONNECTION_INFO.getNamespaceURI(), CONNECTION_INFO.getLocalPart());
if (connectionInfo.getDataSource() != null) {
writer.writeAttribute("dataSource", connectionInfo.getDataSource());
}
ConnectionProperties connectionProperties = connectionInfo.getConnectionProperties();
if (connectionProperties != null) {
writer.writeStartElement(CONNECTION_PROPERTIES.getNamespaceURI(), CONNECTION_PROPERTIES.getLocalPart());
if (connectionProperties.getDriverClass() != null) {
writer.writeAttribute("driverClass", connectionProperties.getDriverClass());
}
if (connectionProperties.getDatabaseURL() != null) {
writer.writeAttribute("databaseURL", connectionProperties.getDatabaseURL());
}
if (connectionProperties.getUsername() != null) {
writer.writeAttribute("username", connectionProperties.getUsername());
}
if (connectionProperties.getPassword() != null) {
writer.writeAttribute("password", connectionProperties.getPassword());
}
if (connectionProperties.getLoginTimeout() != null) {
writer.writeAttribute("loginTimeout", String.valueOf(connectionProperties.getLoginTimeout()));
}
writer.writeEndElement();
}
writer.writeEndElement();
}
}
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