Laney Consulting

2010-03-22T11:36:00.000-07:00

Google Goodness: Using GWT With Guice | Javalobby

2010-02-28T08:48:00.000-08:00

Google Checkout is here! Added a custom shopping cart using the Google Checkout XML API. A slight wrinkle getting JDOM to work with GAE, but a quick fix searching JDOM and "Google App Engine", on Google, of course, and everything is running nicely.

Looking into monetizing the site, but don't won't to overburden the download pulling in a lot of embedded content.

Synchronizing the product database now, and should begin seeing some hits. Oh, didn't mention, integrated the site with Google Analytics. Should have done it before hitting the forums, but no bites, yet, on product integration, either. Seems everyone has been there, done that.

But, not on Google App Engine, cheers!

Product Advertising API

2010-02-24T03:50:00.000-08:00

Thinking about adding Amazon Advertising to app engine

Product Advertising API

2010-01-31T08:38:00.000-08:00

Working with GWT, beginning with the Getting Started tutorial, trying to deploy Bookstore to GAE in one weeked! Almost got stumped adding ClickHander to a Grid, thankfully someone posted this solution,

// listen for mouse events on the results grid
resultsGrid.addClickHandler(new ClickHandler() {
   public void onClick(ClickEvent event) {
      final HTMLTable table = (HTMLTable) event.getSource();
      final HTMLTable.Cell cell = table.getCellForEvent(event);
      // cell.getCellIndex() COL
      // cell.getRowIndex() ROW
   });

Very cool!

2009-04-19T11:44:00.000-07:00

Alternating row colors using Struts2

<s:iterator value="results" status="status">
<s:if test="#status.odd">
<tr bgcolor="#F8ECE0">
</s:if>
<s:else>
<tr>
</s:else>

2009-02-21T09:42:00.000-08:00

Struts2 nested checkbox tag inside iterator

Using the s:iterator tag and status attribute it's possible to display and update values of complex types within a collection.

For example, using an iterator tag,

<s:iterator value="results" status="status">

<s:hidden value="%{product.sku}" name="results[%{#status.index}].product.sku" />

<input type="checkbox" name="results[<s:property value="%{#status.index}" />].selected" <s:property value="%{selected}" />>

</s:iterator>

within a form tag, the submit action will update the list of results in the Action class, where my action class has

protected List<ProductBean> results;

with getters and setters, and my ProductBean has,

private Product product;

with getters and setters, and

private boolean selected;

/**
* @return the selected
*/
public String isSelected() {
    return selected ? "checked" : "";
}

/**
* @param selected the selected to set
*/
public void setSelected(String selected) {
    this.selected = selected == null || selected.equals("") ? false : true;
}

Note: If you find something useful, please leave a comment, thanks!

2008-07-23T11:39:00.000-07:00

Implement connection pooling in Tomcat 5.5 using Hibernate 3, MySQL 5
Culled from various sources:

Add JDBC driver, mysql-connector-java-5.1.5.jar to apache-tomcat-5.5.xx\common\lib

Add resource-ref to WEB-INF/web.xml

<web-app ...>

...

<resource-ref>
    <description>
        Resource reference to a factory for java.sql.Connection
        instances that may be used for talking to a particular
        database that is configured in the server.xml file.
    </description>
    <res-ref-name>jdbc/MySqlDb</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
    <res-auth>Container</res-auth>
</resource-ref>

</web-app>

Add session-factory name attribute and property elements to WEB-INF/classes/hibernate.cfg.xml

<hibernate-configuration>
    <session-factory name="java:hibernate/SessionFactory">

        <!-- JNDI Connection -->
        <property name="hibernate.connection.datasource">
            java:comp/env/jdbc/MySqlDS
        </property>

        <property name="hibernate.dialect">
            org.hibernate.dialect.MySQLDialect
        </property>

...

    </session-factory>
</hibernate-configuration>

Add Resource to META-INF/context.xml, alternatively add Resource to GlobalResources in tomcat server.xml

<?xml version="1.0" encoding="UTF-8"?>

<Context path="/MyApp" reloadable="true">

  <Resource name="jdbc/MySqlDS" auth="Container"
    type="javax.sql.DataSource"
    maxActive="100" maxIdle="10" maxWait="10000"
    username="myUsername" password="myPassword"
    driverClassName="com.mysql.jdbc.Driver"
    url="jdbc:mysql://localhost:3306/bookstore?autoReconnect=true"/>

</Context>

That should work!

2008-06-08T17:32:00.000-07:00

Struts2 checkboxlist UI tag rendering one item per line
After struggling with this UI tag for a some time today, I gave up and was attempting to use s:checkbox inside of an s:iterator to render one item per line, unsuccessfully.

So, upon revisiting s:checkboxlist, I found that it's a relatively painless thing to override the checkboxlist.ftl file described here, http://struts.apache.org/2.0.9/docs/template-loading.html, add a break at the end of this line

<label for="${parameters.name?html}-${itemCount}" class="checkboxLabel">${itemValue?html}</label><br />

and save the file in the webapp/template/simple dir of my web application.

2008-06-06T11:28:00.000-07:00

Hello, all!

I've maintained a blog for several years on my own server, and decided it was time to move to a lower maintenance solution. Spaces looked like a good choice, so here goes!

Most of my posts will be technically oriented, simply because there's never enough good information when looking for a solution to a tough problem. Blogging serves as documentation for myself, as much as it does for anyone else trying to solve the same or similar problems.

I have experience using Java, CSS, HTML, JavaScript, Struts 2, Maven 2, Hibernate 3 and other Open Source and Internet technologies. Please feel free to contact me with any questions or comments.

2003-09-24T07:32:00.000-07:00

Welcome to Laney Consulting Web Log, enjoy your visit!