Beginner needs help with simple task
Hi folks,
I'm just getting started learning LabVIEW. In the VI I'm making, I'm trying to count the number of times a button is pressed (see attachments). When the button is in the True state, the Cycles Counted value is incremented. But when the button is in the False state, how do I make the Cycles Counted value unchanged?
Thanks,
Eric
Attachments:
t.JPG 16 KB
f.JPG 14 KB
Here is a really simple VI. The count boolean is set to latched when pressed.
Message Edited by Jhoskins on 04-04-2007 08:40 AM
Joe.
"NOTHING IS EVER EASY"
Attachments:
count.vi 25 KB
count.JPG 46 KB
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</applet>
</body>
</html>Can someone please check this and see what, if anything, is wrong?Hi Chris,
This isn't going to help much. I took your Java code
and put it in a file HelloWorld.java. I took your HTML
code and put it in a file HelloWorld.html. I compiled
HelloWorld.java with javac so that I had HelloWorld.class.
I then ran the program with appletviewer by typing
appletviewer HelloWorld.html.
It loaded and ran fine.
Since that sounds like exactly what you are doing,
I'm not sure what else to suggest. (I could also
run it by opening the HTML file with IE.)
There are only two things that still suggest themselves,
and they seem like long-shots:
1) Is the file named HelloWorld.java that contains your
code (including the capital W)? This is obviously a
long-shot because your code shouldn't compile if this
was set incorrectly.
2) Is it possible that you have the CLASSPATH environmental
variable set? Some programs (like QuickTime for Java)
will set the CLASSPATH and then Java just stops working.
You can find out by typing SET at the command prompt and
looking for CLASSPATH. If you find it, then you'll probably
need to remove it from your AUTOEXEC.BAT (in Windows 98),
or update it to include the runtime classes for the SDK.
--Steve -
Raw Beginner need help with Adobe Photoshop CS2
I am reading Photoshop CS2 for digital photographers by Scott Kelby. I am looking at pg 55 if any one has this book and would like to visually see what I am about to describe. I own Adobe Photoshop CS2 software. After bringing up Adobe bride RAW on my PC, I then see all the settings, Exposure, Shadows, Brightness, Contrast, and Saturation.. Located directly above all of these settings is Auto and Default which you can click on and adjust all settings at the same time. If you don't like what you see you click on Default to go back to the original, you can then make your adjustments individually. In my CS2 book there is an Auto box you can check or un-check beside each setting, Exposure, Shadows, Brightness, and Contrast. My question is how do I get the Auto box beside each setting so I can simply put a check in that box and preview changes individually instead of the Auto and Default on top which changes every setting at the same time? I hope this make since to you, if not I will try to explain again.
Thank you Ramon for your help. I will just be happy with what I have, which works fine but I thought it might be better for me to have the individual Auto check box for each setting. Thank you for the tip to double-click the sliders to reset it to default, it works in CS2 also:) Actually this gives me more control and works out great now that I think about it. I am sure there are more handy little tips I should know about but don't because I am a beginner in learning RAW. Hopefully I'll stumble across a book or some thing over the internet that will help me with my learning curve.
-
URL: newbie needs help with simple programming question!
Hi everyone,
Please direct me to a FAQ or other resource, or help me with this problem:
I want to create a text field (or similar container) that contains both ordinary text AND a URL/hyperlink in it. For example, the following text might appear in the text field:
"I have many _pictures_ from my vacation"
where the word "pictures" is actually a hyperlink to a web site, and the other portions of the string are simple text.
All advice and help is appreciated!
-Dennis Reda
[email protected]Well here is one way you code do it but if you do alittle research on them links above it will explain how this code works.Well it will explain how jeditorpane and hyperlinklistener work
import javax.swing.*;
import java.awt.*;
import javax.swing.event.*;
import java.net.*;
public class b extends javax.swing.JApplet implements HyperlinkListener {
JEditorPane field = new JEditorPane();
public b() {
Container pane = getContentPane();
FlowLayout flo = new FlowLayout();
pane.setLayout(flo);
field.setPreferredSize(new Dimension(200, 25));
field.setEditable(false);
pane.add(field);
setContentPane(pane);
String gg1 = "<html><body>I have many_<a href='http://www.home.com'>pictures</a>_from my vacation</body></html>";
field.addHyperlinkListener(this);
field.setContentType("text/html");
field.setText(gg1);
public void hyperlinkUpdate(HyperlinkEvent e) {
if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
try{
URL url = new URL("http://www.msn.com");
getAppletContext().showDocument(url,"_self");
}catch(Exception r) {};
public void init() {
b c = new b();
ps hope this helped -
Beginner needs help with CMR field problem
Hello,
I have two ejbs, one called EstablishmentEJB and another called VisitorCommentsEJB. The relationship is of one EstablishmentEJB instance to many VisitorCommentsEJB instances.
Here are the definitions for the tables:
CREATE TABLE establishments (
DB_ESTABLISHMENT_ID int(11) NOT NULL default '0',
DB_POSTCODE varchar(100) NOT NULL default '',
DB_ESTABLISHMENT_NAME varchar(255) NOT NULL default '',
PRIMARY KEY (DB_ESTABLISHMENT_ID)
) TYPE=InnoDB;
CREATE TABLE visitors_comments (
DB_VISITOR_COMMENT_ID int(11) NOT NULL auto_increment,
DB_ESTABLISHMENT_ID int(11) NOT NULL default '0',
DB_COMMENT varchar(255) NOT NULL default '',
PRIMARY KEY (DB_VISITOR_COMMENT_ID)
) TYPE=InnoDB;Here are the xml DDs:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar>
-->
<ejb-jar xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/ejb-jar_2_1.xsd"
version="2.1">
<description>test guide</description>
<display-name>test guide</display-name>
<enterprise-beans>
<!--===========Establishment================ -->
<entity>
<ejb-name>EstablishmentEJB</ejb-name>
<home>com.softwareag.test_guide.establishmentEJB.PGEstablishmentHome</home>
<remote>com.softwareag.test_guide.establishmentEJB.PGEstablishment</remote>
<local-home>com.softwareag.test_guide.establishmentEJB.PGEstablishmentLocalHome</local-home>
<local>com.softwareag.test_guide.establishmentEJB.PGEstablishmentLocal</local>
<ejb-class>com.softwareag.test_guide.establishmentEJB.PGEstablishmentBean</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.Integer</prim-key-class>
<reentrant>false</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>Establishment</abstract-schema-name>
<cmp-field>
<field-name>id</field-name>
</cmp-field>
<cmp-field>
<field-name>name</field-name>
</cmp-field>
<primkey-field>id</primkey-field>
</entity>
<!--===========Grade================ -->
<entity>
<ejb-name>GradeEJB</ejb-name>
<home>com.softwareag.test_guide.gradeEJB.PGGradeHome</home>
<remote>com.softwareag.test_guide.gradeEJB.PGGrade</remote>
<local-home>com.softwareag.test_guide.gradeEJB.PGGradeLocalHome</local-home>
<local>com.softwareag.test_guide.gradeEJB.PGGradeLocal</local>
<ejb-class>com.softwareag.test_guide.gradeEJB.PGGradeBean</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.Integer</prim-key-class>
<reentrant>false</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>Grade</abstract-schema-name>
<cmp-field>
<field-name>id</field-name>
</cmp-field>
<cmp-field>
<field-name>grade</field-name>
</cmp-field>
<primkey-field>id</primkey-field>
</entity>
<!--===========VisitorsComment================ -->
<entity>
<ejb-name>VisitorCommentEJB</ejb-name>
<home>com.softwareag.test_guide.visitorCommentEJB.PGVisitorCommentHome</home>
<remote>com.softwareag.test_guide.visitorCommentEJB.PGVisitorComment</remote>
<local-home>com.softwareag.test_guide.visitorCommentEJB.PGVisitorCommentLocalHome</local-home>
<local>com.softwareag.test_guide.visitorCommentEJB.PGVisitorCommentLocal</local>
<ejb-class>com.softwareag.test_guide.visitorCommentEJB.PGVisitorCommentBean</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.Integer</prim-key-class>
<reentrant>false</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>VisitorsComment</abstract-schema-name>
<cmp-field>
<field-name>id</field-name>
</cmp-field>
<cmp-field>
<field-name>comment</field-name>
</cmp-field>
<primkey-field>id</primkey-field>
</entity>
<!--===========Country================ -->
<entity>
<ejb-name>CountryEJB</ejb-name>
<home>com.softwareag.test_guide.countryEJB.PGCountryHome</home>
<remote>com.softwareag.test_guide.countryEJB.PGCountry</remote>
<local-home>com.softwareag.test_guide.countryEJB.PGCountryLocalHome</local-home>
<local>com.softwareag.test_guide.countryEJB.PGCountryLocal</local>
<ejb-class>com.softwareag.test_guide.countryEJB.PGCountryBean</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.Integer</prim-key-class>
<reentrant>false</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>Country</abstract-schema-name>
<cmp-field>
<field-name>id</field-name>
</cmp-field>
<cmp-field>
<field-name>countryName</field-name>
</cmp-field>
<primkey-field>id</primkey-field>
</entity>
<!--===========Category================ -->
<entity>
<ejb-name>CategoryEJB</ejb-name>
<home>com.softwareag.test_guide.categoryEJB.PGCategoryHome</home>
<remote>com.softwareag.test_guide.categoryEJB.PGCategory</remote>
<local-home>com.softwareag.test_guide.categoryEJB.PGCategoryLocalHome</local-home>
<local>com.softwareag.test_guide.categoryEJB.PGCategoryLocal</local>
<ejb-class>com.softwareag.test_guide.categoryEJB.PGCategoryBean</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.Integer</prim-key-class>
<reentrant>false</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>Category</abstract-schema-name>
<cmp-field>
<field-name>id</field-name>
</cmp-field>
<cmp-field>
<field-name>category</field-name>
</cmp-field>
<primkey-field>id</primkey-field>
</entity>
<!--===========SearchEngineValueListHandler================ -->
<session>
<ejb-name>PGSearchEngineValueListHandlerEJB</ejb-name>
<home>com.softwareag.test_guide.searchEngineEJB.PGSearchEngineValueListHandlerHome</home>
<remote>com.softwareag.test_guide.searchEngineEJB.PGSearchEngineValueListHandler</remote>
<local-home>com.softwareag.test_guide.searchEngineEJB.PGSearchEngineValueListHandlerLocalHome</local-home>
<local>com.softwareag.test_guide.searchEngineEJB.PGSearchEngineValueListHandlerLocal</local>
<ejb-class>com.softwareag.test_guide.searchEngineEJB.PGSearchEngineValueListHandlerBean</ejb-class>
<session-type>Stateful</session-type>
<transaction-type>Container</transaction-type>
<resource-ref>
<res-ref-name>jdbc/test_guia</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Application</res-auth>
</resource-ref>
</session>
<!--===========SessionFacade================ -->
<session>
<ejb-name>PGSessionFacadeEJB</ejb-name>
<home>com.softwareag.test_guide.sessionFacadeEJB.PGSessionFacadeHome</home>
<remote>com.softwareag.test_guide.sessionFacadeEJB.PGSessionFacade</remote>
<local-home>com.softwareag.test_guide.sessionFacadeEJB.PGSessionFacadeLocalHome</local-home>
<local>com.softwareag.test_guide.sessionFacadeEJB.PGSessionFacadeLocal</local>
<ejb-class>com.softwareag.test_guide.sessionFacadeEJB.PGSessionFacadeBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
<resource-ref>
<res-ref-name>jdbc/test_guia</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Application</res-auth>
</resource-ref>
</session>
</enterprise-beans>
<relationships>
<!--===========Establishments-VisitorComments================-->
<ejb-relation>
<ejb-relation-name>Establishment-VisitorComment</ejb-relation-name>
<ejb-relationship-role>
<ejb-relationship-role-name>Establishment-has-many-comments</ejb-relationship-role-name>
<multiplicity>One</multiplicity>
<relationship-role-source>
<ejb-name>EstablishmentEJB</ejb-name>
</relationship-role-source>
<cmr-field>
<cmr-field-name>visitorComments</cmr-field-name>
<cmr-field-type>java.util.Collection</cmr-field-type>
</cmr-field>
</ejb-relationship-role>
<ejb-relationship-role>
<ejb-relationship-role-name>Comment-belongs-to-Establishment</ejb-relationship-role-name>
<multiplicity>Many</multiplicity>
<relationship-role-source>
<ejb-name>VisitorCommentEJB</ejb-name>
</relationship-role-source>
</ejb-relationship-role>
</ejb-relation>
<!--===========Establishments-Grades================-->
<ejb-relation>
<ejb-relation-name>Establishment-Grade</ejb-relation-name>
<ejb-relationship-role>
<ejb-relationship-role-name>Establishment-has-many-grades</ejb-relationship-role-name>
<multiplicity>One</multiplicity>
<relationship-role-source>
<ejb-name>EstablishmentEJB</ejb-name>
</relationship-role-source>
<cmr-field>
<cmr-field-name>grades</cmr-field-name>
<cmr-field-type>java.util.Collection</cmr-field-type>
</cmr-field>
</ejb-relationship-role>
<ejb-relationship-role>
<ejb-relationship-role-name>Grade-belongs-to-Establishment</ejb-relationship-role-name>
<multiplicity>Many</multiplicity>
<relationship-role-source>
<ejb-name>GradeEJB</ejb-name>
</relationship-role-source>
</ejb-relationship-role>
</ejb-relation>
<!--===========Establishments-Countries================-->
<ejb-relation>
<ejb-relation-name>Country-Establishment</ejb-relation-name>
<ejb-relationship-role>
<ejb-relationship-role-name>Country-has-many-establishments</ejb-relationship-role-name>
<!--========== One or Many here?? ==========-->
<multiplicity>Many</multiplicity>
<relationship-role-source>
<ejb-name>CountryEJB</ejb-name>
</relationship-role-source>
</ejb-relationship-role>
<ejb-relationship-role>
<ejb-relationship-role-name>Establishment-has-many-countries</ejb-relationship-role-name>
<multiplicity>Many</multiplicity>
<relationship-role-source>
<ejb-name>EstablishmentEJB</ejb-name>
</relationship-role-source>
<cmr-field>
<cmr-field-name>countries</cmr-field-name>
<cmr-field-type>java.util.Collection</cmr-field-type>
</cmr-field>
</ejb-relationship-role>
</ejb-relation>
<!--===========Establishments-Categories ================-->
<ejb-relation>
<ejb-relation-name>Establishment-Category</ejb-relation-name>
<ejb-relationship-role>
<ejb-relationship-role-name>Establishment-has-many-categories</ejb-relationship-role-name>
<multiplicity>Many</multiplicity>
<relationship-role-source>
<ejb-name>EstablishmentEJB</ejb-name>
</relationship-role-source>
<cmr-field>
<cmr-field-name>categories</cmr-field-name>
<cmr-field-type>java.util.Collection</cmr-field-type>
</cmr-field>
</ejb-relationship-role>
<ejb-relationship-role>
<ejb-relationship-role-name>Category-has-many-establishments</ejb-relationship-role-name>
<multiplicity>Many</multiplicity>
<relationship-role-source>
<ejb-name>CategoryEJB</ejb-name>
</relationship-role-source>
</ejb-relationship-role>
</ejb-relation>
</relationships>
</ejb-jar>
<?xml version="1.0" encoding="ISO-8859-1"?>
<jonas-ejb-jar xmlns="http://www.objectweb.org/jonas/ns"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.objectweb.org/jonas/ns
http://www.objectweb.org/jonas/ns/jonas-ejb-jar_4_0.xsd" >
<!--
<!DOCTYPE jonas-ejb-jar PUBLIC "-//ObjectWeb//DTD JOnAS 3.2//EN" "http://www.objectweb.org/jonas/dtds/jonas-ejb-jar_3_2.dtd">
<jonas-ejb-jar>
-->
<!-- ===============SearchEngineValueListHandler=======================-->
<jonas-session>
<ejb-name>PGSearchEngineValueListHandlerEJB</ejb-name>
<jndi-name>PGSearchEngineValueListHandlerEJBHome</jndi-name>
<jonas-resource>
<res-ref-name>jdbc/test_guia</res-ref-name>
<jndi-name>test_guia</jndi-name>
</jonas-resource>
</jonas-session>
<!-- ===============SessionFacade=======================-->
<jonas-session>
<ejb-name>PGSessionFacadeEJB</ejb-name>
<jndi-name>PGSessionFacadeEJBHome</jndi-name>
<jonas-resource>
<res-ref-name>jdbc/test_guia</res-ref-name>
<jndi-name>test_guia</jndi-name>
</jonas-resource>
</jonas-session>
<!-- ===============Establishment=======================-->
<jonas-entity>
<ejb-name>EstablishmentEJB</ejb-name>
<jndi-name>PGEstablishmentHome</jndi-name>
<cleanup>none</cleanup>
<jdbc-mapping>
<jndi-name>test_guia</jndi-name>
<jdbc-table-name>ESTABLISHMENTS</jdbc-table-name>
<cmp-field-jdbc-mapping>
<field-name>id</field-name>
<jdbc-field-name>DB_ESTABLISHMENT_ID</jdbc-field-name>
</cmp-field-jdbc-mapping>
<cmp-field-jdbc-mapping>
<field-name>name</field-name>
<jdbc-field-name>DB_ESTABLISHMENT_NAME</jdbc-field-name>
</cmp-field-jdbc-mapping>
</jdbc-mapping>
</jonas-entity>
<!-- ===============Grade=======================-->
<jonas-entity>
<ejb-name>GradeEJB</ejb-name>
<jndi-name>PGgradeHome</jndi-name>
<cleanup>none</cleanup>
<jdbc-mapping>
<jndi-name>test_guia</jndi-name>
<jdbc-table-name>GRADES</jdbc-table-name>
<cmp-field-jdbc-mapping>
<field-name>id</field-name>
<jdbc-field-name>DB_GRADE_ID</jdbc-field-name>
</cmp-field-jdbc-mapping>
<cmp-field-jdbc-mapping>
<field-name>grade</field-name>
<jdbc-field-name>DB_GRADE</jdbc-field-name>
</cmp-field-jdbc-mapping>
<!--
<cmp-field-jdbc-mapping>
<field-name>establishment_id</field-name>
<jdbc-field-name>DB_ESTABLISHMENT_ID</jdbc-field-name>
</cmp-field-jdbc-mapping>
-->
</jdbc-mapping>
</jonas-entity>
<!-- ===============Visitor�s comments=======================-->
<jonas-entity>
<ejb-name>VisitorCommentEJB</ejb-name>
<jndi-name>PGVisitorCommentHome</jndi-name>
<cleanup>none</cleanup>
<jdbc-mapping>
<jndi-name>test_guia</jndi-name>
<jdbc-table-name>VISITORS_COMMENTS</jdbc-table-name>
<cmp-field-jdbc-mapping>
<field-name>id</field-name>
<jdbc-field-name>DB_VISITOR_COMMENT_ID</jdbc-field-name>
</cmp-field-jdbc-mapping>
<cmp-field-jdbc-mapping>
<field-name>comment</field-name>
<jdbc-field-name>DB_COMMENT</jdbc-field-name>
</cmp-field-jdbc-mapping>
<!--
<cmp-field-jdbc-mapping>
<field-name>establishment_id</field-name>
<jdbc-field-name>DB_ESTABLISHMENT_ID</jdbc-field-name>
</cmp-field-jdbc-mapping>
-->
</jdbc-mapping>
</jonas-entity>
<!-- ===============Countries=======================-->
<jonas-entity>
<ejb-name>CountryEJB</ejb-name>
<jndi-name>PGcountryHome</jndi-name>
<cleanup>none</cleanup>
<jdbc-mapping>
<jndi-name>test_guia</jndi-name>
<jdbc-table-name>COUNTRIES</jdbc-table-name>
<cmp-field-jdbc-mapping>
<field-name>id</field-name>
<jdbc-field-name>DB_COUNTRY_ID</jdbc-field-name>
</cmp-field-jdbc-mapping>
<cmp-field-jdbc-mapping>
<field-name>countryName</field-name>
<jdbc-field-name>DB_COUNTRY_NAME_FR</jdbc-field-name>
</cmp-field-jdbc-mapping>
</jdbc-mapping>
</jonas-entity>
<!-- ===============Categories=======================-->
<jonas-entity>
<ejb-name>CategoryEJB</ejb-name>
<jndi-name>PGcategoryHome</jndi-name>
<cleanup>none</cleanup>
<jdbc-mapping>
<jndi-name>test_guia</jndi-name>
<jdbc-table-name>CATEGORIES</jdbc-table-name>
<cmp-field-jdbc-mapping>
<field-name>id</field-name>
<jdbc-field-name>DB_CATEGORY_ID</jdbc-field-name>
</cmp-field-jdbc-mapping>
<cmp-field-jdbc-mapping>
<field-name>category</field-name>
<jdbc-field-name>DB_CATEGORY_NAME_FR</jdbc-field-name>
</cmp-field-jdbc-mapping>
</jdbc-mapping>
</jonas-entity>
<!--===========Establishments-VisitorComments================-->
<jonas-ejb-relation>
<ejb-relation-name>Establishment-VisitorComment</ejb-relation-name>
<jonas-ejb-relationship-role>
<ejb-relationship-role-name>Comment-belongs-to-Establishment</ejb-relationship-role-name>
<foreign-key-jdbc-mapping>
<foreign-key-jdbc-name>DB_ESTABLISHMENT_ID</foreign-key-jdbc-name>
</foreign-key-jdbc-mapping>
</jonas-ejb-relationship-role>
</jonas-ejb-relation>
<!--===========Establishments-Grades================-->
<jonas-ejb-relation>
<ejb-relation-name>Establishment-Grade</ejb-relation-name>
<jonas-ejb-relationship-role>
<ejb-relationship-role-name>Grade-belongs-to-Establishment</ejb-relationship-role-name>
<foreign-key-jdbc-mapping>
<foreign-key-jdbc-name>DB_ESTABLISHMENT_ID</foreign-key-jdbc-name>
</foreign-key-jdbc-mapping>
</jonas-ejb-relationship-role>
</jonas-ejb-relation>
<!--===========Establishments-Countries================-->
<jonas-ejb-relation>
<ejb-relation-name>Country-Establishment</ejb-relation-name>
<jdbc-table-name>COUNTRIES_ESTABLISHMENTS</jdbc-table-name>
<jonas-ejb-relationship-role>
<ejb-relationship-role-name>Country-has-many-establishments</ejb-relationship-role-name>
<foreign-key-jdbc-mapping>
<foreign-key-jdbc-name>DB_ESTABLISHMENT_ID</foreign-key-jdbc-name>
</foreign-key-jdbc-mapping>
</jonas-ejb-relationship-role>
<jonas-ejb-relationship-role>
<ejb-relationship-role-name>Establishment-has-many-countries</ejb-relationship-role-name>
<foreign-key-jdbc-mapping>
<foreign-key-jdbc-name>DB_COUNTRY_ID</foreign-key-jdbc-name>
</foreign-key-jdbc-mapping>
</jonas-ejb-relationship-role>
</jonas-ejb-relation>
<!--===========Establishments-Categories ================-->
<jonas-ejb-relation>
<ejb-relation-name>Establishment-Category</ejb-relation-name>
<jdbc-table-name>ESTABLISHMENTS_CATEGORIES</jdbc-table-name>
<jonas-ejb-relationship-role>
<ejb-relationship-role-name>Establishment-has-many-categories</ejb-relationship-role-name>
<foreign-key-jdbc-mapping>
<foreign-key-jdbc-name>DB_CATEGORY_ID</foreign-key-jdbc-name>
</foreign-key-jdbc-mapping>
</jonas-ejb-relationship-role>
<jonas-ejb-relationship-role>
<ejb-relationship-role-name>Category-has-many-establishments</ejb-relationship-role-name>
<foreign-key-jdbc-mapping>
<foreign-key-jdbc-name>DB_ESTABLISHMENT_ID</foreign-key-jdbc-name>
</foreign-key-jdbc-mapping>
</jonas-ejb-relationship-role>
</jonas-ejb-relation>
</jonas-ejb-jar>Here are the two classes for the beans
package com.softwareag.test_guide.establishmentEJB;
import java.util.Collection;
import java.util.Iterator;
import javax.ejb.CreateException;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;
import javax.ejb.RemoveException;
import com.softwareag.test_guide.ejb.util.PGServiceLocator;
import com.softwareag.test_guide.ejb.util.PGServiceLocatorException;
import com.softwareag.test_guide.gradeEJB.PGGradeLocal;
import com.softwareag.test_guide.visitorCommentEJB.PGVisitorCommentLocal;
import com.softwareag.test_guide.visitorCommentEJB.PGVisitorCommentLocalHome;
* @author Julien Martin
public abstract class PGEstablishmentBean implements EntityBean {
public Integer ejbCreate(
Integer id,
String name,
Collection visitorComments,
Collection grades,
Collection countries,
Collection categories)
throws CreateException {
setId(id);
setName(name);
setVisitorComments(visitorComments);
setGrades(grades);
return null;
public void ejbPostCreate(
Integer id,
String name,
Collection visitorComments,
Collection grades,
Collection countries,
Collection categories) {
setCountries(countries);
setCategories(categories);
//Business methods
public int getAverageGrade() {
Collection grades = this.getGrades();
if (grades.size() == 0) {
return 0;
} else {
Iterator iterator = grades.iterator();
int total = 0;
while (iterator.hasNext()) {
PGGradeLocal pGGradeLocal = (PGGradeLocal) iterator.next();
Integer amount = pGGradeLocal.getGrade();
total = total + amount.intValue();
float average = total / grades.size();
int roundedAverage = Math.round(average);
return roundedAverage;
public void addComment(Integer id, String comment) {
try {
PGVisitorCommentLocalHome pGcommentHome =
(PGVisitorCommentLocalHome) PGServiceLocator.getInstance().getLocalHome("PGVisitorCommentHome_L");
PGVisitorCommentLocal pGcomment = pGcommentHome.create(id, comment);
Collection pGcomments = this.getVisitorComments();
pGcomments.add(pGcomment);
} catch (PGServiceLocatorException e) {
e.printStackTrace();
} catch (CreateException e) {
e.printStackTrace();
//Persistence fields
public abstract Integer getId();
public abstract void setId(Integer id);
public abstract String getName();
public abstract void setName(String name);
//Relation fields
public abstract Collection getVisitorComments();
public abstract void setVisitorComments(Collection visitorComments);
public abstract Collection getGrades();
public abstract void setGrades(Collection grades);
public abstract Collection getCountries();
public abstract void setCountries(Collection countries);
public abstract Collection getCategories();
public abstract void setCategories(Collection categories);
//Callback methods
public void setEntityContext(EntityContext ec) {
public void unsetEntityContext() {
public void ejbLoad() {
public void ejbStore() {
public void ejbActivate() {
public void ejbPassivate() {
public void ejbRemove() throws RemoveException {
package com.softwareag.test_guide.visitorCommentEJB;
import javax.ejb.CreateException;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;
import javax.ejb.RemoveException;
* @author Julien Martin
public abstract class PGVisitorCommentBean implements EntityBean {
public Integer ejbCreate(Integer id, String comment)throws CreateException {
setId(id);
setComment(comment);
return null;
public void ejbPostCreate(Integer id, String comment) {}
//Persistence fields
public abstract Integer getId();
public abstract void setId(Integer id);
public abstract String getComment();
public abstract void setComment(String comment);
// public abstract Integer getEstablishment_id();
// public abstract void setEstablishment_id(Integer establishment_id);
//Callback methods
public void setEntityContext(EntityContext ec) {}
public void unsetEntityContext() {}
public void ejbLoad() {}
public void ejbStore() {}
public void ejbActivate() {}
public void ejbPassivate() {}
public void ejbRemove() throws RemoveException {}
}I get the following error from MYSQL:
22:57:10,203 : JOnASVisitorCommentEJBBean.ejbPostCreate : Failed to create bean:
java.sql.SQLException: General error, message from server: "Column 'DB_ESTABLISHMENT_ID' cannot be null"
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1626)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:886)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:945)
at com.mysql.jdbc.Connection.execSQL(Connection.java:1844)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1602)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1488)
at jorm.rdb.mysql.VisitorsCommentBinding.insertVISITORS_COMMENTSTable(VisitorsCommentBinding.java:558)
at jorm.rdb.mysql.VisitorsCommentBinding.write(VisitorsCommentBinding.java:147)
at com.softwareag.test_guide.visitorCommentEJB.JOnASVisitorCommentEJBBean.ejbPostCreate(JOnASVisitorCommentEJBBean.java:283)
at com.softwareag.test_guide.visitorCommentEJB.JOnASVisitorCommentEJBLocalHome.create(JOnASVisitorCommentEJBLocalHome.java:76)
at com.softwareag.test_guide.establishmentEJB.PGEstablishmentBean.addComment(PGEstablishmentBean.java:71)
at com.softwareag.test_guide.establishmentEJB.JOnASEstablishmentEJBLocal.addComment(JOnASEstablishmentEJBLocal.java:170)
at com.softwareag.test_guide.sessionFacadeEJB.PGSessionFacadeBean.addComment(PGSessionFacadeBean.java:80)
at com.softwareag.test_guide.sessionFacadeEJB.JOnASPGSessionFacadeEJBLocal.addComment(JOnASPGSessionFacadeEJBLocal.java:168)
at com.softwareag.test_guide.web.temp.PGBusinessDelegate.addComment(PGBusinessDelegate.java:93)
at com.softwareag.test_guide.web.temp.PGCommentsManagedBean.addCommentAction(PGCommentsManagedBean.java:13)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:126)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:72)
at javax.faces.component.UICommand.broadcast(UICommand.java:312)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:267)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:381)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:75)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
at sun.reflect.GeneratedMethodAccessor208.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:241)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:499)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:263)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:157)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:50)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:140)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:136)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:793)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:702)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:571)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:644)
at java.lang.Thread.run(Thread.java:536)
22:57:10,203 : JFactory.postInvoke : system exception in business method:
javax.ejb.EJBException: Failed to create bean: General error, message from server: "Column 'DB_ESTABLISHMENT_ID' cannot be null"
at com.softwareag.test_guide.visitorCommentEJB.JOnASVisitorCommentEJBBean.ejbPostCreate(JOnASVisitorCommentEJBBean.java:288)
at com.softwareag.test_guide.visitorCommentEJB.JOnASVisitorCommentEJBLocalHome.create(JOnASVisitorCommentEJBLocalHome.java:76)
at com.softwareag.test_guide.establishmentEJB.PGEstablishmentBean.addComment(PGEstablishmentBean.java:71)
at com.softwareag.test_guide.establishmentEJB.JOnASEstablishmentEJBLocal.addComment(JOnASEstablishmentEJBLocal.java:170)
at com.softwareag.test_guide.sessionFacadeEJB.PGSessionFacadeBean.addComment(PGSessionFacadeBean.java:80)
at com.softwareag.test_guide.sessionFacadeEJB.JOnASPGSessionFacadeEJBLocal.addComment(JOnASPGSessionFacadeEJBLocal.java:168)
at com.softwareag.test_guide.web.temp.PGBusinessDelegate.addComment(PGBusinessDelegate.java:93)
at com.softwareag.test_guide.web.temp.PGCommentsManagedBean.addCommentAction(PGCommentsThanks all for replying,
The error occurs when I run the client and not at deploy time. Here is the client code:
public void addComment(Integer primaryKey, String comment) {
System.out.println("primaryKey------>" + primaryKey);
try {
PGEstablishmentLocalHome establishmentHome = (PGEstablishmentLocalHome) PGServiceLocator.getInstance().getLocalHome("PGEstablishmentHome_L");
PGEstablishmentLocal establishmentLocal = establishmentHome.findByPrimaryKey(primaryKey);
establishmentLocal.addComment(primaryKey,comment);
} catch (PGServiceLocatorException e) {
e.printStackTrace();
} catch (FinderException e) {
e.printStackTrace();
u haven't defined the PK entry in the Establishment EJB Bean in DDYes look in the standard DD.
What's more I need both DD as I would with most ejb containers.
The field DB_ESTABLISHMENT_ID is required and I cannot set it to NULL.
Any other help greatly appreciated.
Julien Martin.
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