Re: [xwiki-devs] [gsoc] Re: Problems creating a query using the QueryManager

On Jul 28, 2008, at 12:53 PM, Thomas Mortagne wrote: I think I know why: because the code doesn't work :) The AbstractQueryManager should implement Composable. I'm looking into it.

>>> I think it's "prop.value =:identifier" (not ':identifier') >>> otherwise >>> hibernate will consider you use the value ":identifier" and will >>> not >>> replace it. >> >> OK Thomas, I fixed that. Thanks! >> >> >> ----- Original Message ----- >> From: "Ludovic Dubost" &lt;ludovic(a)xwiki.org&gt; >> To: "XWiki Developers" &lt;devs(a)xwiki.org&gt; >> Sent: Monday, July 28, 2008 11:53 AM >> Subject: [gsoc] Re: [xwiki-devs] Problems creating a query using the >> QueryManager >> >> >>> >>> Hi Markus, >>> >>> Line 73 of AbstractQueryManager >>> >>> query = (Query) componentManager.lookup(Query.ROLE, language); >>> >>> Your componentManager is null.. This probably means that you >>> have not >>> activated the component manager from plexus properly. >>> Probably Vincent can help, but he will probably need to know how >>> you >>> have build your code. >>> >>> Ludovic >>> >>> Markus Lanthaler wrote: >>>> Hi, >>>> >>>> I'm currently implementing the last things to finish OpenID >>>> authentication >>>> support but I have some problems with the query manager. I'm >>>> trying to >>>> get >>>> the document (should be only one) which an attached >>>> OpenIdIdentifier >>>> object >>>> whose "identifier" string property's value has some specific >>>> value. I >>>> didn't >>>> found any documentation apart >>>> http://markmail.org/message/jt6m2huqr4r6hvk6 >>>> and >>>> http://dev.xwiki.org/xwiki/bin/view/Design/XWiki+Query+Language+Specificati… >>>> . >>>> >>>> I tried to achieve this by the following code: >>>> >>>> public static String findOpenIDUser(String openid_identifier, >>>> XWikiContext context) throws XWikiException >>>> { >>>> XWiki xwiki = context.getWiki(); >>>> >>>> QueryManager qm = xwiki.getStore().getQueryManager(); >>>> Query search_user; >>>> >>>> if (qm.hasLanguage(Query.HQL)) { >>>> search_user = >>>> qm.createQuery(", BaseObject as obj, >>>> StringProperty as >>>> prop >>>> where doc.fullName = obj.name and obj.className = >>>> 'XWiki.OpenIdIdentifier' >>>> and obj.id=prop.id.id and prop.id.name='identifier' and >>>> prop.value = >>>> ':identifier'", Query.HQL); >>>> } else if (qm.hasLanguage(Query.XPATH)) { >>>> search_user = >>>> qm.createQuery("/*/*[obj/XWiki/OpenIdIdentifier/@xp:identifier = >>>> ':identifier'] ", Query.XPATH); >>>> } else >>>> throw new RuntimeException(); >>>> >>>> search_user.bindValue("identifier", openid_identifier); >>>> >>>> List<XWikiDocument> found_users = >>>> search_user.setLimit(1).execute(); >>>> if (found_users.size() > 0) { >>>> if (log.isDebugEnabled()) { >>>> log.debug("OpenID " + openid_identifier + " already >>>> registered."); >>>> } >>>> return found_users.get(0).getFullName(); >>>> } >>>> >>>> return null; >>>> } >>>> >>>> >>>> but all I get is a NullPointerException when qm.createQuery(..., >>>> Query.HQL) >>>> is called. What's wrong with my code? >>>> >>>> java.lang.NullPointerException >>>> at >>>> com >>>> .xpn >>>> .xwiki >>>> .store >>>> .query >>>> .AbstractQueryManager.createQuery(AbstractQueryManager.java:73) >>>> at >>>> com >>>> .xpn >>>> .xwiki >>>> .user.impl.openid.OpenIDHelper.findOpenIDUser(OpenIDHelper.java: >>>> 109) >>>> at >>>> com >>>> .xpn >>>> .xwiki >>>> .user >>>> .impl >>>> .xwiki.MyFormAuthenticator.processLogin(MyFormAuthenticator.java: >>>> 201) >>>> at >>>> com >>>> .xpn >>>> .xwiki >>>> .user >>>> .impl >>>> .xwiki.MyFormAuthenticator.processLogin(MyFormAuthenticator.java: >>>> 178) >>>> at >>>> com >>>> .xpn >>>> .xwiki >>>> .user >>>> .impl >>>> .xwiki.XWikiAuthServiceImpl.checkAuth(XWikiAuthServiceImpl.java: >>>> 205) >>>> at com.xpn.xwiki.XWiki.checkAuth(XWiki.java:3518) >>>> at >>>> com >>>> .xpn >>>> .xwiki >>>> .user >>>> .impl >>>> .xwiki >>>> .XWikiRightServiceImpl.checkAccess(XWikiRightServiceImpl.java:139) >>>> at com.xpn.xwiki.XWiki.checkAccess(XWiki.java:3526) >>>> at com.xpn.xwiki.XWiki.prepareDocuments(XWiki.java:4432) >>>> at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:190) >>>> at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:115) >>>> at >>>> org >>>> .apache >>>> .struts >>>> .action >>>> .RequestProcessor.processActionPerform(RequestProcessor.java:431) >>>> at >>>> org >>>> .apache >>>> .struts.action.RequestProcessor.process(RequestProcessor.java:236) >>>> at >>>> org >>>> .apache.struts.action.ActionServlet.process(ActionServlet.java: >>>> 1196) >>>> at >>>> org.apache.struts.action.ActionServlet.doPost(ActionServlet.java: >>>> 432) >>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:710) >>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) >>>> at >>>> org >>>> .apache >>>> .catalina >>>> .core >>>> .ApplicationFilterChain >>>> .internalDoFilter(ApplicationFilterChain.java:290) >>>> at >>>> org >>>> .apache >>>> .catalina >>>> .core >>>> .ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) >>>> at >>>> com >>>> .xpn >>>> .xwiki >>>> .web >>>> .SavedRequestRestorerFilter >>>> .doFilter(SavedRequestRestorerFilter.java:287) >>>> at >>>> org >>>> .apache >>>> .catalina >>>> .core >>>> .ApplicationFilterChain >>>> .internalDoFilter(ApplicationFilterChain.java:235) >>>> at >>>> org >>>> .apache >>>> .catalina >>>> .core >>>> .ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) >>>> at >>>> com >>>> .xpn >>>> .xwiki >>>> .web >>>> .SetCharacterEncodingFilter >>>> .doFilter(SetCharacterEncodingFilter.java:112) >>>> at >>>> org >>>> .apache >>>> .catalina >>>> .core >>>> .ApplicationFilterChain >>>> .internalDoFilter(ApplicationFilterChain.java:235) >>>> at >>>> org >>>> .apache >>>> .catalina >>>> .core >>>> .ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) >>>> at >>>> org >>>> .apache >>>> .catalina >>>> .core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) >>>> at >>>> org >>>> .apache >>>> .catalina >>>> .core.StandardContextValve.invoke(StandardContextValve.java:175) >>>> at >>>> org >>>> .apache >>>> .catalina.core.StandardHostValve.invoke(StandardHostValve.java: >>>> 128) >>>> at >>>> org >>>> .apache >>>> .catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java: >>>> 102) >>>> at >>>> org >>>> .apache >>>> .catalina >>>> .core.StandardEngineValve.invoke(StandardEngineValve.java:109) >>>> at >>>> org >>>> .apache >>>> .catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) >>>> at >>>> org >>>> .apache >>>> .coyote.http11.Http11Processor.process(Http11Processor.java:844) >>>> at >>>> org.apache.coyote.http11.Http11Protocol >>>> $Http11ConnectionHandler.process(Http11Protocol.java:583) >>>> at >>>> org.apache.tomcat.util.net.JIoEndpoint >>>> $Worker.run(JIoEndpoint.java:447) >>>> at java.lang.Thread.run(Thread.java:619)