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...

Starting

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with

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DAS

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This

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page

...

provides

...

a

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simple

...

"how

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to"

...

and

...

give

...

a

...

step-by-step

...

to

...

build

...

a

...

simple

...

aplication

...

using

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DAS/SDO

...


features

...

from

...

Tuscany

...

project.

...

Here

...

you'll

...

build

...

our

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"CompanyWeb

...

Sample

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Web

...

Application".

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This

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sample

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uses

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Mysql

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and

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Tomcat.

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A.

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Initial

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Setup

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  1. Install

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  1. Tomcat(latest

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  1. version)

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  1. and

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  1. Mysql(latest

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  1. version).

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  2. Download

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  1. dependencies

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  1. and

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  1. libraries

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  2. Create

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  1. companyweb

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  1. directory

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  1. in

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  1. (Tomcat

...

  1. root)/webapps/.

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  1. EX:

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  1. (Tomcat

...

  1. root)/webapps/companyweb

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  2. Create

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  1. the

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  1. directory

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  1. (Tomcat

...

  1. root)/webapps/companyweb/WEB-INF/lib

...

  1. and

...

  1. put

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  1. the

...

  1. libraries

...

  1. in

...

  1. it.

...

  1. Otherwise

...

  1. you

...

  1. can

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  1. put

...

  1. them

...

  1. in

...

  1. (Tomcat

...

  1. root)/common/lib

...

  2. The

...

  1. required

...

  1. libraries

...

  1. are:

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  1. i)

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  1. common-(latest

...

  1. version).jar

...


  1. ii)

...

  1. ecore-(latest

...

  1. version).jar

...


  1. iii)

...

  1. ecore-change-(latest

...

  1. version).jar

...


  1. iv)

...

  1. ecore-xmi-(lateste

...

  1. version).jar

...


  1. v)

...

  1. log4j-(latest

...

  1. version).jar

...


  1. vi)

...

  1. sdo-api-xxx.jar

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  1. vii)

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  1. tuscany-das-rdb-xxx.jar

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  1. viii)

...

  1. tuscany-sdo-xxx.jar

...


  1. ix)

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  1. xsd-(latest

...

  1. version).jar

...


  1. x)

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  1. mysql-connector-java-(latest

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  1. version).jar

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  1. ->

...

  1. This

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  1. is

...

  1. the

...

  1. JDBC

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  1. connector,

...

  1. It'll

...

  1. be

...

  1. used

...

  1. to

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  1. connect

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  1. to

...

  1. Mysql

...

  1. database

B. Creating CompanyWeb Database

After the setting up your enviroment, the next step will be to create the databse where the DAS will connect and manage the transaction with the SDO features.

  1. Run the following commands in the Mysql Command Shell
    create database companyweb; -> This command will create the CompanyWeb database
    use companyweb; -> Set the shell to work with companyweb database
  2. Create a text file and name it as "comapnyweb.sql",

...

  1. you

...

  1. should

...

  1. insert

...

  1. the

...

  1. following

...

  1. lines

...

  1. in

...

  1. this

...

  1. file

...

  1. No Format

...

  1. 
CREATE TABLE EMPLOYEE ( 
ID INTEGER NOT NULL AUTO_INCREMENT, NAME VARCHAR(30), SN VARCHAR(10), MANAGER SMALLINT, DEPARTMENTID INTEGER, PRIMARY KEY (ID) 
); 

CREATE TABLE DEPARTMENT ( 
ID INTEGER NOT NULL AUTO_INCREMENT, NAME VARCHAR(30), LOCATION VARCHAR(30), NUMBER VARCHAR(10), COMPANYID INTEGER, EOTM INTEGER, PRIMARY KEY (ID) 
); 

CREATE TABLE COMPANY ( 
ID INTEGER NOT NULL AUTO_INCREMENT, NAME VARCHAR(30), PRIMARY KEY (ID) 
); 

CREATE UNIQUE INDEX SQL060217085530980 ON COMPANY (ID ASC); 

CREATE UNIQUE INDEX SQL060217085531710 ON DEPARTMENT (ID ASC); 

INSERT INTO COMPANY VALUES (51, "ACME Publishing"); 

INSERT INTO COMPANY VALUES (52, "Do-rite plumbing"); 

INSERT INTO COMPANY VALUES (53, "MegaCorp");

...

  2. Run the following command in the Mysql Shell
     source (path)/companyweb.sql 
...
  1.  -> 
...
  1.  Executes 
...
  1.  the 
...
  1.  script 
...
  1.  to 
...
  1.  create 
...
  1.  tables, 
...
  1.  constraints, 
...
  1.  etc
...
C. 
...
 Creating 
...
 XML 
...
 configuration 
...
 file
...
  1. Create 
...
  1.  the 
...
  1.  file 
...
  1.  CompanyConfig.xml 
...
  1.  in 
...
  1.  the 
...
  1.  directory 
...
  1.  (Tomcat 
...
  1.  root)/webapps/companyweb/WEB-INF/classes
...
  2. Edit 
...
  1.  it 
...
  1.  and 
...
  1.  write 
...
  1.  the 
...
  1.  following 
...
  1.  code 
...
  1.  No Format
...
  1. 
<?xml version="1.0" encoding="ASCII"?> 
<Config xmlns="http:///org.apache.tuscany.das.rdb/config.xsd"> 

<Command name="all companies" SQL="select * from COMPANY" kind="Select"/> 
<Command name="all companies and departments" SQL="select * from COMPANY left outer join DEPARTMENT on COMPANY.ID = DEPARTMENT.COMPANYID" kind="Select"/> 
<Command name="all departments for company" SQL="select * from COMPANY inner join DEPARTMENT on COMPANY.ID = DEPARTMENT.COMPANYID where COMPANY.ID = ?" kind="Select"/> 
<Command name="company by id with departments" SQL="select * from COMPANY left outer join DEPARTMENT on COMPANY.ID = DEPARTMENT.COMPANYID where COMPANY.ID = ?" kind="Select"/> 
<Table tableName="COMPANY"> 
<Column columnName="ID" primaryKey="true" generated="true"/> 
</Table> 
<Table tableName="DEPARTMENT"> 
?	<Column columnName="ID" primaryKey="true" generated="true"/> 
</Table> 
<Relationship name="departments" primaryKeyTable="COMPANY" foreignKeyTable="DEPARTMENT" many="true"> 
<KeyPair primaryKeyColumn="ID" foreignKeyColumn="COMPANYID"/> 
</Relationship> 
</Config> 

...
  2. Save the file.
D. Creating the class and jsp wich manages the DAS/SDO features
  1. Create the file CompanyClient.java in the directory (Tomcat root)/webapps/companyweb/WEB-INF/classes/org/apache/tuscany/samples/das/companyweb
...
  2. Write 
...
  1.  the 
...
  1.  following 
...
  1.  code 
...
  1.  in 
...
  1.  the 
...
  1.  file 
...
  1.  : 
...
  1.  No Format
    
package org.apache.tuscany.samples.das.companyweb;

import java.io.InputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Random;

import org.apache.tuscany.das.rdb.Command;
import org.apache.tuscany.das.rdb.DAS;

import commonj.sdo.DataObject;

public class CompanyClient {

    private Random generator = new Random();

    private DAS das = DAS.FACTORY.createDAS(getConfig("CompanyConfig.xml"));

    public final List getCompanies() {

        Command read = das.getCommand("all companies");
        DataObject root = read.executeQuery();
        return root.getList("COMPANY");

    }

    public final List getCompaniesWithDepartments() {

        Command read = das.getCommand("all companies and departments");
        DataObject root = read.executeQuery();
        return root.getList("COMPANY");
    }

    public final List getDepartmentsForCompany(int id) {
        Command read = das.getCommand("all departments for company");
        read.setParameter(1, new Integer(id));
        DataObject root = read.executeQuery();
        return root.getList("COMPANY");
    }

    public final void addDepartmentToFirstCompany() {
        Command read = das.getCommand("all companies and departments");
        DataObject root = read.executeQuery();
        DataObject firstCustomer = root.getDataObject("COMPANY[1]");

        DataObject newDepartment = root.createDataObject("DEPARTMENT");
        newDepartment.setString("NAME", "Default Name");
        firstCustomer.getList("departments").add(newDepartment);

        das.applyChanges(root);

    }

    public final void deleteDepartmentsFromFirstCompany() {

        // This section gets the ID of the first Company just so I can
        // demonstrate a parameterized command next
        Command readAll = das.getCommand("all companies and departments");
        DataObject root = readAll.executeQuery();
        int idOfFirstCustomer = root.getInt("COMPANY[1]/ID");
        System.out.println("ID of first company is: " + idOfFirstCustomer);

        // Read a specific company based on the known ID
        Command readCust = das.getCommand("company by id with departments");
        readCust.setParameter(1, new Integer(idOfFirstCustomer));
        root = readCust.executeQuery();

        // Delete all the comany's departments from the graph
        DataObject firstCustomer = root.getDataObject("COMPANY[1]");

        // Shallow copy of list for deleting. This is required to avoid the
        // dreaded
        // ConcurrentModificationException since #delete operation also removes
        // from the original list
        List allDepartments = new ArrayList(firstCustomer.getList("departments"));

        Iterator i = allDepartments.iterator();
        DataObject department;
        while (i.hasNext()) {
            department = (DataObject) i.next();
            System.out.println("Deleting department named: " + department.getString("NAME"));
            department.delete();
        }

        das.applyChanges(root);

    }

    public final void changeFirstCompanysDepartmentNames() {

        // This section gets the ID of the first Company just so I can
        // demonstrate a parameterized command next
        Command readAll = das.getCommand("all companies and departments");
        DataObject root = readAll.executeQuery();
        int idOfFirstCustomer = root.getInt("COMPANY[1]/ID");
        System.out.println("ID of first company is: " + idOfFirstCustomer);

        // Read a specific company based on the known ID
        Command readCust = das.getCommand("company by id with departments");
        readCust.setParameter(1, new Integer(idOfFirstCustomer));
        root = readCust.executeQuery();

        // Modify all the comany's department names
        DataObject firstCustomer = root.getDataObject("COMPANY[1]");
        Iterator i = firstCustomer.getList("departments").iterator();
        DataObject department;
        while (i.hasNext()) {
            department = (DataObject) i.next();
            System.out.println("Modifying department: " + department.getString("NAME"));
            department.setString("NAME", getRandomDepartmentName());
        }
        das.applyChanges(root);

    }
    
    
    public void releaseResources() {
        das.releaseResources();
    }

    // Utilities

    private String getRandomDepartmentName() {
        int number = generator.nextInt(1000) + 1;
        return "Dept-" + number;
    }

    private InputStream getConfig(String fileName) {
        return getClass().getClassLoader().getResourceAsStream(fileName);
    }

}

...
  1.  #Create 
...
  1.  following 
...
  1.  Company.jsp 
...
  1.  file 
...
  1.  under 
...
  1.  (Tomcat 
...
  1.  root)/webapps/companyweb. 
...
  1.  No Format
...
  1. 
<html>
<head>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"

	pageEncoding="ISO-8859-1"

        import="org.apache.tuscany.samples.das.companyweb.CompanyClient"
        import="commonj.sdo.*"
%>

<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Company Test</title>
</head>
<body>

<H2>Tuscany DAS Companies WEB Example</H2>


<form>
<input type="submit" id="doFill" name="doFill" value="All Companies">
<input type="submit" id="doFillAll" name="doFillAll" value="All Companies/Departments">
<input type="submit" id="doAddDepartment" name="doAddDepartment" value="Add department to first company">
<input type="submit" id="doChangeDepartmentNames" name="doChangeDepartmentNames" value="Change Company(1) Dept names">
<input type="submit" id="doDeleteDepartments" name="doDeleteDepartments" value="Delete Company(1) Depts">
<hr>

<!-- Do Fill -->
<%if(request.getParameter("doFill") != null){%>

<table border>
	<thead>
		<tr>
			<th>ID</th>
			<th>Name</th>
		</tr>
	</thead>
	<tbody>

		<%
		CompanyClient companyClient = new CompanyClient();
		java.util.Iterator i = companyClient.getCompaniesWithDepartments().iterator();
		while (i.hasNext()) {
			DataObject company = (DataObject)i.next();
		%>
			<tr>
				<td><%=company.getInt("ID")%></td>
				<td><%=company.getString("NAME")%></td>
			<tr>
		<%	
		}
		companyClient.releaseResources();
		%>
		
	</tbody>
</table>
<%}%>


<!-- Do Add Department -->
<%
if(request.getParameter("doAddDepartment") != null){
    CompanyClient companyClient = new CompanyClient();
    companyClient.addDepartmentToFirstCompany();
    companyClient.releaseResources();
}
%>

<!-- Do Delete Departments from first company -->
<%
if(request.getParameter("doDeleteDepartments") != null){
    CompanyClient companyClient = new CompanyClient();
    companyClient.deleteDepartmentsFromFirstCompany();
    companyClient.releaseResources();
}
%>

<!-- Do Change First Company's Department Names -->
<%
if(request.getParameter("doChangeDepartmentNames") != null){
    CompanyClient companyClient = new CompanyClient();
    companyClient.changeFirstCompanysDepartmentNames();
    companyClient.releaseResources();
}
%>


<!-- Do FillAll -->
<%if(request.getParameter("doFill") == null) {%>

<table border>
	<thead>
		<tr>
			<th>ID</th>
			<th>Name</th>
			<th>Department_ID</th>
			<th>Department_Name</th>
		</tr>
	</thead>
	<tbody>

		<%
		CompanyClient companyClient = new CompanyClient();
		java.util.Iterator i = companyClient.getCompaniesWithDepartments().iterator();
		while (i.hasNext()) {
			DataObject company = (DataObject)i.next();
		%>
			<tr>
				<td><%=company.getInt("ID")%></td>
				<td><%=company.getString("NAME")%></td>
			<tr>

			

			<%
			java.util.Iterator j = company.getList("departments").iterator();
			while (j.hasNext()) {
				DataObject department = (DataObject)j.next();
			%>
				<tr>
					<td></td><td></td><td><%=department.getInt("ID")%></td>
					<td><%=department.getString("NAME")%></td>
				<tr>
			<%	
			}
			%>
		<%	
		}
		companyClient.releaseResources();
		%>
		
	</tbody>
</table>
<%}%>

</form>
</body>
</html>

...
E. 
...
 Creating 
...
 web 
...
 and 
...
 context 
...
 configuration 
...
 files 
...
 supporting 
...
 Tomcat
...
#Under 
...
 WEB-INF 
...
 create 
...
 following 
...
 web.xml 
...
 file 
...
 and 
...
 save 
...
 it.
...

 web.xml
*
{
 No Format
}
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web
Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
    <display-name>Tuscany DAS sample Company  WEB</display-name>

    <welcome-file-list id="WelcomeFileList">
        <welcome-file>Company.jsp</welcome-file>
    </welcome-file-list>
</web-app>
{noformat}


#Under 
...
 META-INF 
...
 create 
...
 following 
...
 context.xml 
...
 file 
...
 and 
...
 save 
...
 it.
...

 context.xml
*
{
 No Format
}
<?xml version="1.0" encoding="UTF-8"?>
<Context path="/DAS Stand alone app" debug="5" reloadable="true" crossContext="true">
   <Manager pathname=""/>
   <ResourceLink name="jdbc/dastest" global="jdbc/dastest" type="javax.sql.DataSource" />                     
</Context>
{noformat}

#Under {Tomcat root}/conf modify *
#Under (Tomcat root)/conf modify server.xml
...
 with 
...
 following 
...
 entry 
...
 in 
...
 <GlobalNamingResources>


{
 No Format
}
<Resource name="jdbc/dastest"
type="javax.sql.DataSource"  auth="Container"
description="MySQL database for DAS Web sample"
maxActive="100" maxIdle="30" maxWait="10000"
username="" password=""
driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql:///dastest?user=xxx&password=yyy"/>
{noformat}

h3. 
F. 
...
 Run 
...
 the 
...
 sample 
...
 companyweb
...
All 
...
 setup 
...
 is 
...
 complete 
...
 now. 
...
 Run 
...
 the 
...
 application 
...
 in 
...
 Tomcat 
...
 and 
...
 try 
...
 different 
...
 options 
...
 like 
...
 query 
...
 company 
...
 and
...

 departments, 
...
 addition, 
...
 deletion.