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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.samples.das.customer;
import java.io.InputStream;
import java.util.List;
import org.apache.tuscany.das.rdb.Command;
import org.apache.tuscany.das.rdb.DAS;
import org.apache.tuscany.das.rdb.config.Config;
import org.apache.tuscany.das.rdb.util.ConfigUtil;
import org.apache.tuscany.samples.das.databaseSetup.DB2Setup;
import org.apache.tuscany.samples.das.databaseSetup.DerbySetup;
import org.apache.tuscany.samples.das.databaseSetup.MySQLSetup;
import commonj.sdo.DataObject;
public class CustomerClient {
private DAS das = null;
public static final String DERBY = "derby";
public static final String MYSQL = "mysql";
public static final String DB2 = "db2";
private CustomerClient(){
}
/**If database is present connect to it and create necessary tables, procedures, data etc.
* If database is not present create database and then create the above elements. Create database
* is implemented for MySQL and Derby (not for IBM DB2).
*/
protected boolean checkIfDBPresent(String dbType, String dbName, String user, String password){
try {
if(dbType.equals(DERBY)){
new DerbySetup(dbName+"-"+user+"-"+password);
}
if(dbType.equals(DB2)){
new DB2Setup(dbName+"-"+user+"-"+password);
}
if(dbType.equals(MYSQL)){
new MySQLSetup(dbName+"-"+user+"-"+password);
}
} catch(Exception e){
e.printStackTrace();
}
return true;
}
private void init(String configFile){
try{
this.das = DAS.FACTORY.createDAS(getConfig(configFile));
}catch(Exception e){
e.printStackTrace();
}
}
public static void main(String[] args){
String configFile = "Customers.xml";//this can be from input params too as below
if(args != null && args.length >0){
configFile = args[0];
}
CustomerClient cclient = new CustomerClient();
Config config = ConfigUtil.loadConfig(cclient.getClass().getClassLoader().getResourceAsStream(configFile));
String dbType = null;
String dbURL = null;
String user = null;
String password = null;
if(config.getConnectionInfo().getConnectionProperties().getDriverClass().indexOf(DERBY) != -1){
dbType = DERBY;
}
if(config.getConnectionInfo().getConnectionProperties().getDriverClass().indexOf(MYSQL) != -1){
dbType = MYSQL;
}
if(config.getConnectionInfo().getConnectionProperties().getDriverClass().indexOf(DB2) != -1){
dbType = DB2;
}
//get connection info from config
dbURL = config.getConnectionInfo().getConnectionProperties().getDatabaseURL();
user = config.getConnectionInfo().getConnectionProperties().getUserName();
password = config.getConnectionInfo().getConnectionProperties().getPassword();
System.out.println("connection info from config***************");
System.out.println("dbName:"+dbURL+" user:"+user+" password:"+password);
System.out.println("******************************************");
//dt create/connect/create schema
cclient.checkIfDBPresent(dbType, dbURL, user, password);
//get das handle
cclient.init(configFile);
//test select
System.out.println("Result:select all customers");
printList(cclient.getCustomers());
//test insert
System.out.println("Result:insert new customer");
cclient.addCustomer();
printList(cclient.getCustomers());
//test update
System.out.println("Result:update first customer");
cclient.changeFirstCustomerName();
printList(cclient.getCustomers());
//test delete
System.out.println("Result:delete last customer");
cclient.deleteCustomer();
printList(cclient.getCustomers());
}
/**
* display result
* @param customers
*/
public static void printList(List customers){
for(int i=0; i<customers.size(); i++){
System.out.println(" ID:"+(((DataObject)customers.get(i)).getInt("ID"))+
" LASTNAME:"+(((DataObject)customers.get(i)).getString("LASTNAME"))+
" ADDRESS:"+(((DataObject)customers.get(i)).getString("ADDRESS")));
}
}
/**
* select
* @return
*/
public final List getCustomers() {
Command read = das.getCommand("AllCustomers");
DataObject root = read.executeQuery();
return root.getList("CUSTOMER");
}
/**
* insert
*
*/
public final void addCustomer() {
Command read = das.getCommand("AllCustomers");
DataObject root = read.executeQuery();
DataObject newCustomer = root.createDataObject("CUSTOMER");
newCustomer.setInt("ID", 5);
newCustomer.setString("LASTNAME", "Jenny");
newCustomer.setString("ADDRESS", "USA");
das.applyChanges(root);
}
/**
* delete
*
*/
public final void deleteCustomer() {
Command readAll = das.getCommand("AllCustomers");
DataObject root = readAll.executeQuery();
List allCustomers = root.getList("CUSTOMER");
DataObject lastCustomer = (DataObject)allCustomers.get(allCustomers.size()-1);
if(lastCustomer != null){
System.out.println("Deleting customer named: " + lastCustomer.getString("LASTNAME"));
lastCustomer.delete();
}
das.applyChanges(root);
}
/**
* update
*
*/
public final void changeFirstCustomerName() {
Command readAll = das.getCommand("AllCustomers");
DataObject root = readAll.executeQuery();
DataObject firstCustomer = root.getDataObject("CUSTOMER[1]");
firstCustomer.set("LASTNAME", "BlueBerry");
das.applyChanges(root);
}
/**
* cleanup
*
*/
public void releaseResources() {
das.releaseResources();
}
/**Utilities
*
* @param fileName
* @return
*/
private InputStream getConfig(String fileName) {
return getClass().getClassLoader().getResourceAsStream(fileName);
}
}
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