User: starksm
Date: 01/06/20 13:59:56
Added: src/examples/org/jboss/docs/interest Interest.java
InterestBean.java InterestClient.java
InterestHome.java InterestServlet.java
application.xml build.xml ejb-jar.xml home.html
jboss-web.xml jboss.xml web.xml
Log:
Add first steps interest example to manual examples src tree
Revision Changes Path
1.1 manual/src/examples/org/jboss/docs/interest/Interest.java
Index: Interest.java
===================================================================
package org.jboss.docs.interest;
import javax.ejb.EJBObject;
import java.rmi.RemoteException;
/**
This interface defines the `Remote' interface for the `Interest' EJB. Its
single method is the only method exposed to the outside world. The class
InterestBean implements the method.
*/
public interface Interest extends EJBObject
{
/**
Calulates the compound interest on the sum `principle', with interest rate per
period `rate' over `periods' time periods. This method also prints a message to
standard output; this is picked up by the EJB server and logged. In this way we
can demonstrate that the method is actually being executed on the server,
rather than the client.
*/
public double calculateCompoundInterest(double principle,
double rate, double periods) throws RemoteException;
}
1.1 manual/src/examples/org/jboss/docs/interest/InterestBean.java
Index: InterestBean.java
===================================================================
package org.jboss.docs.interest;
import java.rmi.RemoteException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
/**
This class contains the implementation for the `calculateCompoundInterest'
method exposed by this Bean. It includes empty method bodies for the methods
prescribe by the SessionBean interface; these don't need to do anything in this
simple example.
*/
public class InterestBean implements SessionBean
{
/**
Calulates the compound interest on the sum `principle', with interest rate per
period `rate' over `periods' time periods. This method also prints a message to
standard output; this is picked up by the EJB server and logged. In this way we
can demonstrate that the method is actually being executed on the server,
rather than the client.
*/
public double calculateCompoundInterest(double principle,
double rate, double periods)
{
System.out.println("Someone called `calculateCompoundInterest!'");
return principle * Math.pow(1+rate, periods) - principle;
}
/** Empty method body
*/
public void ejbCreate()
{}
/** Empty method body
*/
public void ejbRemove()
{}
/** Empty method body
*/
public void ejbActivate()
{}
/** Empty method body
*/
public void ejbPassivate()
{}
/** Empty method body
*/
public void setSessionContext(SessionContext sc)
{}
}
1.1 manual/src/examples/org/jboss/docs/interest/InterestClient.java
Index: InterestClient.java
===================================================================
package org.jboss.docs.interest;
import java.util.Properties;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import org.jboss.docs.interest.Interest;
import org.jboss.docs.interest.InterestHome;
/** This simple application tests the 'Interest' Enterprise JavaBean which is
implemented in the package 'com.web_tomorrow.interest'. For this to work, the
Bean must be deployed on an EJB server.
IMPORTANT: If you want to test this in a real client-server
configuration, this class goes on the client; the URL of the naming provider
specifed in the class must be changed from 'localhost:1099' to the URL of the
naming service on the server
*/
class InterestClient
{
/** This method does all the work. It creates an instance of the Interest EJB on
the EJB server, and calls its `calculateCompoundInterest()' method, then prints
the result of the calculation.
*/
public static void main(String[] args)
{
// Set up the naming provider; this may not always be necessary, depending
// on how your Java system is configured.
Properties env = new Properties();
env.setProperty("java.naming.factory.initial",
"org.jnp.interfaces.NamingContextFactory");
env.setProperty("java.naming.provider.url", "localhost:1099");
env.setProperty("java.naming.factory.url.pkgs",
"org.jboss.naming,org.jnp.interfaces");
// Enclosing the whole process in a single `try' block is not an ideal way
// to do exception handling, but I don't want to clutter the program up
// with catch blocks
try
{
// Get a naming context
InitialContext jndiContext = new InitialContext(env);
System.out.println("Got context");
// Get a reference to the Interest Bean
Object ref = jndiContext.lookup("interest/Interest");
System.out.println("Got reference");
// Get a reference from this to the Bean's Home interface
InterestHome home = (InterestHome)
PortableRemoteObject.narrow(ref, InterestHome.class);
// Create an Interest object from the Home interface
Interest interest = home.create();
// call the calculateCompoundInterest() method to do the calculation
System.out.println("Interest on 1000 units, at 10% per period, compounded
over 2 periods is:");
System.out.println(interest.calculateCompoundInterest(1000, 0.10, 2));
}
catch(Exception e)
{
System.out.println(e.toString());
}
}
}
1.1 manual/src/examples/org/jboss/docs/interest/InterestHome.java
Index: InterestHome.java
===================================================================
package org.jboss.docs.interest;
import java.io.Serializable;
import java.rmi.RemoteException;
import javax.ejb.CreateException;
import javax.ejb.EJBHome;
/**
This interface defines the `home' interface for the `Interest' EJB.
*/
public interface InterestHome extends EJBHome
{
/**
Creates an instance of the `InterestBean' class on the server, and returns a
remote reference to an Interest interface on the client.
*/
Interest create() throws RemoteException, CreateException;
}
1.1 manual/src/examples/org/jboss/docs/interest/InterestServlet.java
Index: InterestServlet.java
===================================================================
package org.jboss.docs.interest;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Hashtable;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.jboss.docs.interest.Interest;
import org.jboss.docs.interest.InterestHome;
/**
* This Servlet provides a user interface to an Enterprise Java Bean.
* The example EJB described in the jBoss documentation at
* http://jboss.org/ calculates compound interest.
* This servlet will call the Interest EJB, passing it a few
* parameters. The EJB will return a result, which the servlet
* will display to the Web client.
*/
public class InterestServlet extends HttpServlet
{
private InterestHome interestHome = null;
/** Looks up the InterestHome interface and saves it for use in
doGet().
*/
public void init() throws ServletException
{
try
{
// Get a naming context
InitialContext jndiContext = new InitialContext();
// Get a reference to the Interest Bean
Object ref = jndiContext.lookup("java:comp/env/ejb/Interest");
// Get a reference from this to the Bean's Home interface
interestHome = (InterestHome) PortableRemoteObject.narrow(ref,
InterestHome.class);
}
catch(Exception e)
{
throw new ServletException("Failed to lookup java:comp/env/ejb/Interest",
e);
}
}
/**
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
String title = "Servlet interface to EJB";
double principal = getValue("principal", 1000.0, request);
double rate = getValue("rate", 10.0, request);
double periods = getValue("periods", 2.0, request);
// set content type and other response header fields first
response.setContentType("text/html");
// then write the data of the response
PrintWriter out = response.getWriter();
out.println("<HTML><HEAD><TITLE>");
out.println(title);
out.println("</TITLE></HEAD><BODY>");
out.println("<H1>" + title + "</H1>");
out.println("<H2>Calling EJB...</H2>");
try
{
// Create an Interest object from the Home interface
Interest bean = interestHome.create();
// call the calculateCompoundInterest() method to do the calculation
out.print("Interest on "+principal);
out.print(" units, at "+rate);
out.print("% per period, compounded over "+periods);
out.println(" periods is: ");
out.println(bean.calculateCompoundInterest(principal, rate/100, periods));
bean.remove();
}
catch(Exception e)
{
out.println(e.toString());
}
finally
{
out.println("</BODY></HTML>");
out.close();
}
}
private double getValue(String name, double defaultValue, HttpServletRequest
request)
{
double value = defaultValue;
String pvalue = request.getParameter(name);
if( pvalue != null )
{
try
{
value = Double.valueOf(pvalue).doubleValue();
}
catch(NumberFormatException e)
{
}
}
return value;
}
}
1.1 manual/src/examples/org/jboss/docs/interest/application.xml
Index: application.xml
===================================================================
<?xml version="1.0" encoding="UTF-8"?>
<application>
<display-name>Interest Tutorial</display-name>
<module>
<web>
<web-uri>interest.war</web-uri>
<context-root>/interest</context-root>
</web>
</module>
<module>
<ejb>interest.jar</ejb>
</module>
</application>
1.1 manual/src/examples/org/jboss/docs/interest/build.xml
Index: build.xml
===================================================================
<?xml version="1.0" encoding="UTF-8" ?>
<!-- An Ant build file for the Interest EJB example
-->
<project name="Interest Build Script" default="ejb-jar" basedir=".">
<!-- Override with your JBoss server dist location -->
<property name="jboss.dist" value="G:/tmp/JBoss-2.2.2_Tomcat-3.2.2/jboss"/>
<!-- Override with your web server servlet jar location -->
<property name="servlet.jar"
value="G:/tmp/JBoss-2.2.2_Tomcat-3.2.2/tomcat/lib/servlet.jar"/>
<property name="src.dir" value="${basedir}/src/org/jboss/docs/interest"/>
<property name="build.dir" value="${basedir}/build"/>
<property name="build.classes.dir" value="${build.dir}/classes"/>
<path id="base.path_22">
<pathelement location="${jboss.dist}/client/ejb.jar"/>
<pathelement location="${jboss.dist}/client/jaas.jar"/>
<pathelement location="${jboss.dist}/client/jbosssx-client.jar"/>
<pathelement location="${jboss.dist}/client/jboss-client.jar"/>
<pathelement location="${jboss.dist}/client/jnp-client.jar"/>
<pathelement location="${servlet.jar}"/>
<pathelement location="${build.classes.dir}"/>
</path>
<path id="base.path_23">
<pathelement location="${jboss.dist}/client/jboss-j2ee.jar"/>
<pathelement location="${jboss.dist}/client/jaas.jar"/>
<pathelement location="${jboss.dist}/client/jbosssx-client.jar"/>
<pathelement location="${jboss.dist}/client/jboss-client.jar"/>
<pathelement location="${jboss.dist}/client/jnp-client.jar"/>
<pathelement location="${servlet.jar}"/>
<pathelement location="${build.classes.dir}"/>
</path>
<target name="validate">
<available property="classpath_id" value="base.path_22"
file="${jboss.dist}/client/ejb.jar" />
<available property="classpath_id" value="base.path_23"
file="${jboss.dist}/client/jboss-j2ee.jar" />
</target>
<target name="fail_if_not_valid" unless="classpath_id">
<fail message="jboss.dist=${jboss.dist} is not a valid JBoss dist
directory"/>
</target>
<target name="init" depends="validate,fail_if_not_valid">
<property name="classpath" refid="${classpath_id}" />
<echo message="Using jboss.dist=${jboss.dist}" />
<echo message="Using classpath=${classpath}" />
</target>
<target name="compile" depends="init">
<mkdir dir="${build.classes.dir}"/>
<javac srcdir="${src.dir}"
destdir="${build.classes.dir}"
classpathref="${classpath_id}"
debug="on"
deprecation="on"
optimize="off"
includes="*.java"
/>
</target>
<!-- Tutorial ejb jar -->
<target name="ejb-jar" depends="compile">
<delete dir="${build.dir}/META-INF"/>
<mkdir dir="${build.dir}/META-INF"/>
<copy file="${src.dir}/ejb-jar.xml" todir="${build.dir}/META-INF" />
<copy file="${src.dir}/jboss.xml" todir="${build.dir}/META-INF" />
<jar jarfile="${build.dir}/interest.jar">
<fileset dir="${build.classes.dir}">
<include name="**/Interest.class" />
<include name="**/InterestHome.class" />
<include name="**/InterestBean.class" />
</fileset>
<fileset dir="${build.dir}">
<include name="META-INF/ejb-jar.xml" />
<include name="META-INF/jboss.xml" />
</fileset>
</jar>
</target>
<!-- Tutorial web app war -->
<target name="war" depends="compile">
<delete dir="${build.dir}/WEB-INF"/>
<mkdir dir="${build.dir}/WEB-INF/classes/org/jboss/docs/interest"/>
<copy file="${src.dir}/web.xml" todir="${build.dir}/WEB-INF" />
<copy file="${src.dir}/jboss-web.xml" todir="${build.dir}/WEB-INF" />
<copy file="${src.dir}/home.html" todir="${build.dir}" />
<copy
file="${build.dir}/classes/org/jboss/docs/interest/InterestServlet.class"
todir="${build.dir}/WEB-INF/classes/org/jboss/docs/interest" />
<jar jarfile="${build.dir}/interest.war">
<fileset dir="${build.dir}">
<include name="WEB-INF/**"/>
<include name="home.html"/>
</fileset>
</jar>
</target>
<!-- Create the tutorial ear that uses the properties based security info -->
<target name="ear" depends="ejb-jar,war">
<copy file="${src.dir}/application.xml" todir="${build.dir}/META-INF" />
<jar jarfile="${build.dir}/interest.ear">
<fileset dir="${build.dir}">
<include name="META-INF/application.xml" />
<include name="interest.jar" />
<include name="interest.war" />
</fileset>
</jar>
</target>
<target name="deploy-ejb-jar" depends="ejb-jar">
<copy file="${build.dir}/interest.jar" todir="${jboss.dist}/deploy" />
</target>
<target name="deploy-ear" depends="ear">
<copy file="${build.dir}/interest.ear" todir="${jboss.dist}/deploy" />
</target>
<target name="interest-client" depends="compile">
<java classname="org.jboss.docs.interest.InterestClient" fork="yes">
<classpath>
<path refid="${classpath_id}"/>
<pathelement location="${build.classes.dir}"/>
</classpath>
</java>
</target>
</project>
1.1 manual/src/examples/org/jboss/docs/interest/ejb-jar.xml
Index: ejb-jar.xml
===================================================================
<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar>
<description>JBoss Interest Sample Application</description>
<display-name>Interest EJB</display-name>
<enterprise-beans>
<session>
<ejb-name>Interest</ejb-name>
<home>org.jboss.docs.interest.InterestHome</home>
<remote>org.jboss.docs.interest.Interest</remote>
<ejb-class>org.jboss.docs.interest.InterestBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Bean</transaction-type>
</session>
</enterprise-beans>
</ejb-jar>
1.1 manual/src/examples/org/jboss/docs/interest/home.html
Index: home.html
===================================================================
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>
Interest EJB Form
</title>
</head>
<body>
<h1>Interest EJB Form</h1>
<form action="/interest/InterestServlet" method="POST" >
<table cellspacing="2" cellpadding="2" border="0">
<tr>
<td>
Principal:
</td>
<td>
<input type="text" name="principle" value="1000">
</td>
</tr>
<tr>
<td>
Rate(%):
</td>
<td>
<input type="text" name="rate" value="10">
</td>
</tr>
<tr>
<td>
Periods:
</td>
<td>
<input type="text" name="periods" value="2">
</td>
</tr>
<tr>
<td>
<input type="submit" name="Calculate" value="Calculate">
</td>
<td>
<input type="Reset">
</td>
</tr>
</table>
</form>
</body>
</html>
1.1 manual/src/examples/org/jboss/docs/interest/jboss-web.xml
Index: jboss-web.xml
===================================================================
<?xml version="1.0" encoding="UTF-8"?>
<jboss-web>
<ejb-ref>
<ejb-ref-name>ejb/Interest</ejb-ref-name>
<jndi-name>interest/Interest</jndi-name>
</ejb-ref>
</jboss-web>
1.1 manual/src/examples/org/jboss/docs/interest/jboss.xml
Index: jboss.xml
===================================================================
<?xml version="1.0" encoding="UTF-8"?>
<jboss>
<enterprise-beans>
<session>
<ejb-name>Interest</ejb-name>
<jndi-name>interest/Interest</jndi-name>
</session>
</enterprise-beans>
</jboss>
1.1 manual/src/examples/org/jboss/docs/interest/web.xml
Index: web.xml
===================================================================
<?xml version="1.0" encoding="UTF-8"?>
<web-app>
<!-- ### Servlets -->
<servlet>
<servlet-name>InterestServlet</servlet-name>
<servlet-class>org.jboss.docs.interest.InterestServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>InterestServlet</servlet-name>
<url-pattern>/InterestServlet</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>home.html</welcome-file>
</welcome-file-list>
<!-- ### EJB References (java:comp/env/ejb) -->
<ejb-ref>
<ejb-ref-name>ejb/Interest</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<home>org.jboss.docs.interest.InterestHome</home>
<remote>org.jboss.docs.interest.Interest</remote>
</ejb-ref>
</web-app>
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