Title: RE: tag library problem with attributes
Kit, should that be
%=library.getBooks()% (notice the equals sign missing in your code)
WR
-Original Message-
From: Kit Cragin [mailto:[EMAIL PROTECTED]]
Sent: den 12 oktober 2000 07:52
To: Orion-Interest
Subject: tag library problem with attributes
Hi:
I am getting the error message Attribute of type
'java.util.Collection'
must be a request time attribute when Orion attempts to
parse my JSP. This
seems weird because I do set rtexprvalue to true in my
taglib.tld (see
below). I was attempting to create an iterator similar to the
one defined in
the orion taglib tutorial at
http://www.orionserver.com/taglibtut/index.jsp
and include it in my web application.
My JSP contains:
%@ taglib uri=tags prefix=model %
jsp:useBean id=library type=com.mongoosetech.model.Library
scope=application/
...
model:iterator name=book type=com.mongoosetech.model.Book
collection=% library.getBooks() %
jsp:getProperty name=book property=name/br/
/model:iterator
where library.getBooks() returns a java.util.Collection of
Book. I have 2
classes:
public class NestedTagInfo extends TagExtraInfo
{
public VariableInfo[] getVariableInfo(TagData data)
{
return new VariableInfo[]
{
new
VariableInfo(data.getAttributeString(name),
data.getAttributeString(type), true, VariableInfo.NESTED)
};
}
}
and
public class IteratorTag extends BodyTagSupport
{
public int doStartTag()
{
if (iterator == null || !iterator.hasNext())
return SKIP_BODY;
pageContext.setAttribute(name, iterator.next(),
PageContext.PAGE_SCOPE);
return EVAL_BODY_TAG;
}
public int doAfterBody() throws JspException
{
if( !iterator.hasNext()) return SKIP_BODY;
pageContext.setAttribute(name, iterator.next(),
PageContext.PAGE_SCOPE);
return EVAL_BODY_TAG;
}
public int doEndTag() throws JspException
{
try
{
if(bodyContent != null)
bodyContent.writeOut(bodyContent.getEnclosingWriter());
}
catch(java.io.IOException e)
{
throw new JspException(e.getMessage());
}
return EVAL_PAGE;
}
public void setName(String name)
{
this.name = name;
}
public void setCollection(Collection collection)
{
if (collection.size() 0) iterator =
collection.iterator();
}
public void setType(String type)
{
this.type = type;
}
private String name;
private String type;
private Iterator iterator;
}
defined in the com.mongoosetech.tags package and a taglib.tld
that looks
like:
taglib
...
tag
nameiterator/name
tagclasscom.mongoosetech.tags.IteratorTag/tagclass
teiclasscom.mongoosetech.tags.IteratorTagInfo/teiclass
bodycontentJSP/bodycontent
attribute
namename/name
requiredtrue/required
/attribute
attribute
nametype/name
requiredfalse/required
/attribute
attribute
namecollection/name
requiredtrue/required
rtexprvaluetrue/rtexprvalue
/attribute
/tag
/taglib
and is a part of WEB-INF/lib/tags.jar which has the structure:
com/mongoosetech/tags/IteratorTag.class
com/mongoosetech/tags/IteratorTagInfo.class
META-INF/taglib.tld
Finally, I have a web.xml with an entry to point to the tag library:
taglib
taglib-uritags/taglib-uri
taglib-location/WEB-INF/lib/tags.jar/taglib-location
/taglib
Anyone have any ideas why this is happening? Thanks...
Kit Cragin
VP of Product Development
Mongoose Technology, Inc.
www.mongoosetech.com
