I having been trying to convert existing pages from
extending ActionForm to DynaActionForm so that I don’t
have to provide the set and get. I am having problems
with the optionsCollection trying to get the iterator.
The correct values are being obtained from the
database and store via the LabelValueBean class. The
getIterator method in OptionsCollectionTag should have
a Collection, but it throw exception at line 351. Not
sure, what is wrong. Thanks for you help.
Greg
My configuration is as follows:
<form-bean name="SiteEditorForm"
type="com.wsa.core.view.SiteEditorForm">
<form-property name="site"
type="java.lang.String"/>
<form-property name="arraylist"
type="com.blacklake.business.db.Site"/>
<form-property name="sitename"
type="java.lang.String" initial=""/>
<form-property name="sitedesc"
type="java.lang.String" initial=""/>
</form-bean>
Partial listing of Site class that I am using:
/**************************************************************************
*
*
**************************************************************************/
public static Collection getArraylist() {
Collection sitecollection = new
ArrayList();
DatabaseConnection conn = null;
String emessage = "";
tbSite dbsitelist = null;
tbSite dbsite = null;
try {
// Initialize the database and tbAddress
class.
conn = new DatabaseConnection(
"development" );
dbsitelist = new tbSite(
conn.getConnection(), "default" );
// Get the list from the database.
sitecollection.add( new LabelValueBean(
"--add--","0") );
for( Iterator
e=dbsitelist.searchAndRetrieveList().iterator();
e.hasNext(); ) {
dbsite = (tbSite)e.next();
sitecollection.add( new
LabelValueBean(dbsite.getField("SiteName"),
dbsite.getField("PK_Site"))
);
}//for
}//try
catch( Exception e ) {
emessage += e.getMessage();
}//catch
finally {
// Release the object for GC.
dbsitelist = null;
dbsite = null;
// Close the database cleanly.
conn.closeConnection();
conn = null;
}//finally
return( sitecollection );
} // getArraylist
/**************************************************************************
*
*
**************************************************************************/
public String toString() {
ArrayList sites =
(ArrayList)Site.getArraylist();
return( sites.toString() );
} // toString
/**************************************************************************
*
*
**************************************************************************/
public Iterator iterator() {
ArrayList sites =
(ArrayList)Site.getArraylist();
return( sites.iterator() );
//Vector sites = Site.getSiteOptions();
//return( sites.iterator() );
} // toString
Reported exception:
javax.servlet.ServletException: Cannot create iterator
for [LabelValueBean[--add--, 0],
LabelValueBean[development, 1], LabelValueBean[test,
2], LabelValueBean[production, 3]]
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.wsa.siteEditor_jsp._jspService(siteEditor_jsp.java:140)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:362)
root cause
javax.servlet.jsp.JspException: Cannot create iterator
for [LabelValueBean[--add--, 0],
LabelValueBean[development, 1], LabelValueBean[test,
2], LabelValueBean[production, 3]]
org.apache.struts.taglib.html.OptionsCollectionTag.getIterator(OptionsCollectionTag.java:351)
org.apache.struts.taglib.html.OptionsCollectionTag.doStartTag(OptionsCollectionTag.java:185)
org.apache.jsp.wsa.siteEditor_jsp._jspx_meth_html_optionsCollection_0(siteEditor_jsp.java:386)
org.apache.jsp.wsa.siteEditor_jsp._jspx_meth_html_select_0(siteEditor_jsp.java:358)
org.apache.jsp.wsa.siteEditor_jsp._jspx_meth_html_form_0(siteEditor_jsp.java:257)
org.apache.jsp.wsa.siteEditor_jsp._jspService(siteEditor_jsp.java:101)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:362)
note The full stack trace of the root cause is
available in the Apache Tomcat/5.0.28 logs.
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