Exception thrown while doing a full text search in JavaHelp

Question

hi,
I am using JavaHelp 2.0_02 in my web application. The Table of contents (TOC ) and the[b] Index work absolutely fine. But when I try to do a text search i get the following exception ..
Exception while creating engine named com.sun.java.help.search.DefaultSearchEngine
for view: javax.help.SearchView@1e20a9a
.. java.lang.reflect.InvocationTargetException
.. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
.. at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
.. at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
.. at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
.. at javax.help.search.MergingSearchEngine.makeEngine(MergingSearchEngine.java:169)
.. at javax.help.search.MergingSearchEngine.<init>(MergingSearchEngine.java:63)
.. at javax.help.tagext.SearchTOCItemTag.doStartTag(SearchTOCItemTag.java:77)
.. at org.apache.jsp.javax_help_SearchView_jsp._jspService(javax_help_SearchView_jsp.java:101)
.. at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137)
.. at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:201)
at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:289)
at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:455)
Caused by: java.security.InvalidParameterException
at com.sun.java.help.search.DefaultSearchEngine.<init>
DefaultSearchEngine.java:75)
... 28 more
My Helpset(.hs) file is located in the Help folder of my application and the entry for search is as follows
<view>
    <name>Search</name>
    <label>Search</label>
    <type>javax.help.SearchView</type>
    <data engine="com.sun.java.help.search.DefaultSearchEngine">JavaHelpSearch</data>
   </view>
</helpset>and the jh.jar file is located in the applications classpath.
and I have successfully done the indexing using jhindexer
I searched through many sites including the java forum.. but not able to find a solution.
Can anyone help me and point out where I could have made a mistake or how to go about this
thanks in advance

Answer 1

I had approximate the same problem, and I've fixed it. In my jar file the javaHelpSearch Folder was named with a leading lower case "j". But in my helpset.hs it was with an upper Case "J"
<name>Search</name>
    <label>Search</label>
    <type>javax.help.SearchView</type>
    <data engine="com.sun.java.help.search.DefaultSearchEngine">JavaHelpSearch</data>
   </view>When the helpset is called from a folder: windows ignore it, but when the helpset is called from into a jar you must type it correct!