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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.implementation.data;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.apache.tuscany.sca.assembly.AssemblyFactory;
import org.apache.tuscany.sca.assembly.ConstrainingType;
import org.apache.tuscany.sca.assembly.Implementation;
import org.apache.tuscany.sca.assembly.Property;
import org.apache.tuscany.sca.assembly.Reference;
import org.apache.tuscany.sca.assembly.Service;
import org.apache.tuscany.sca.data.engine.config.ConnectionInfo;
import org.apache.tuscany.sca.implementation.data.jdbc.JDBCHelper;
import org.apache.tuscany.sca.interfacedef.InvalidInterfaceException;
import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceContract;
import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
/**
* The model representing a sample DATA implementation in an SCA assembly model.
*
* @version $Rev$ $Date$
*/
public class DATAImplementation implements Implementation {
private AssemblyFactory assemblyFactory;
private JavaInterfaceFactory javaFactory;
private ConnectionInfo connectionInfo;
private List<Service> services = new ArrayList<Service>();
/**
* Constructs a new DAS implementation.
*/
public DATAImplementation(AssemblyFactory assemblyFactory,
JavaInterfaceFactory javaFactory) {
// DATA implementation provides one service per database table
// exposing the DATA interface, and have no references and properties
this.assemblyFactory = assemblyFactory;
this.javaFactory = javaFactory;
}
private void introspectServices( AssemblyFactory assemblyFactory, JavaInterfaceFactory javaFactory) {
Connection connection = null;
try {
connection = JDBCHelper.getConnection(connectionInfo);
DatabaseMetaData databaseMetaData = connection.getMetaData();
ResultSet tables = databaseMetaData.getTables(null, null, "%", null);
while(tables.next()) {
//create the SCA service for the table
Service dataService = assemblyFactory.createService();
Service dataCollectionService = assemblyFactory.createService();
dataService.setName(tables.getString(3)+"_DATA");
dataCollectionService.setName(tables.getString(3));
JavaInterface dataInterface;
JavaInterface dataCollectionInterface;
try {
dataInterface = javaFactory.createJavaInterface(DATA.class);
dataCollectionInterface = javaFactory.createJavaInterface(DATACollection.class);
} catch (InvalidInterfaceException e) {
throw new IllegalArgumentException(e);
}
JavaInterfaceContract dataInterfaceContract = javaFactory.createJavaInterfaceContract();
JavaInterfaceContract dataCollectionInterfaceContract = javaFactory.createJavaInterfaceContract();
dataInterfaceContract.setInterface(dataInterface);
dataCollectionInterfaceContract.setInterface(dataCollectionInterface);
dataService.setInterfaceContract(dataInterfaceContract);
dataCollectionService.setInterfaceContract(dataCollectionInterfaceContract);
services.add(dataService);
services.add(dataCollectionService);
}
} catch(SQLException e) {
} finally {
JDBCHelper.cleanupResources(connection, null, null);
}
}
public ConnectionInfo getConnectionInfo() {
return this.connectionInfo;
}
public void setConnectionInfo(ConnectionInfo connectionInfo) {
this.connectionInfo = connectionInfo;
}
public ConstrainingType getConstrainingType() {
// The sample DATA implementation does not support constrainingTypes
return null;
}
public List<Property> getProperties() {
// The sample DATA implementation does not support properties
return Collections.emptyList();
}
public List<Service> getServices() {
if(services == null || services.size() == 0) {
introspectServices(assemblyFactory, javaFactory);
}
return services;
}
public List<Reference> getReferences() {
// The sample DATA implementation does not support references
return Collections.emptyList();
}
public String getURI() {
// The sample DATA implementation does not have a URI
return null;
}
public void setConstrainingType(ConstrainingType constrainingType) {
// The sample DATA implementation does not support constrainingTypes
}
public void setURI(String uri) {
// The sample DATA implementation does not have a URI
}
public boolean isUnresolved() {
// The sample DATA implementation is always resolved
return false;
}
public void setUnresolved(boolean unresolved) {
// The sample DATA implementation is always resolved
}
}
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