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Posted to dev@tomcat.apache.org by bu...@apache.org on 2005/09/22 07:04:00 UTC
DO NOT REPLY [Bug 36767] New: -
Taglibrary utilizing generified collections
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http://issues.apache.org/bugzilla/show_bug.cgi?id=36767
Summary: Taglibrary utilizing generified collections
Product: Tomcat 5
Version: 5.0.28
Platform: PC
OS/Version: Linux
Status: NEW
Keywords: JDK1.5
Severity: minor
Priority: P4
Component: Jasper
AssignedTo: tomcat-dev@jakarta.apache.org
ReportedBy: snoyberg@gamebox.net
I implemented two tags, one to display a navigation bar and another to display a
list of news items. Both tags received their data from a DAO which returned a
Collection of appropriate objects. When I switched over to using generics the
error below appeared for *both* tags.
I found two different fixes. If I avoided creating a local variable to hold
either the Collection<NewsItem> or Iterator<NewsItem>, then everything worked
fine. For example:
for(NewsItem n : newsItemDao.getAll()) { ... }
solved the problem. The other approach was simply not to use the generic
approach in the tag, even though the DAO was still returning a generified
collection.
Here's one of the stacktraces, the other was the same:
Sep 21, 2005 9:43:57 PM org.apache.jasper.compiler.Compiler generateClass
SEVERE: Error compiling file:
/var/lib/tomcat-5/default/work/Catalina/localhost/javacms//org/apache/jsp/WEB_002dINF/jsp/news_jsp.java
[javac] Compiling 1 source file
[javac]
/var/lib/tomcat-5/default/work/Catalina/localhost/javacms/org/apache/jsp/WEB_002dINF/jsp/news_jsp.java:95:29:95:35:
Semantic Error: The class file "NewsTag.class" in
"/var/lib/tomcat-5/default/webapps/javacms/WEB-INF/classes/com/snoyman/jcms/taglib"
has an invalid format (duplicate local variable type table).
[javac]
/var/lib/tomcat-5/default/work/Catalina/localhost/javacms/org/apache/jsp/WEB_002dINF/jsp/news_jsp.java:95:61:95:91:
Semantic Error: Type "NewsTag" was not found.
[javac]
/var/lib/tomcat-5/default/work/Catalina/localhost/javacms/org/apache/jsp/WEB_002dINF/jsp/news_jsp.java:95:129:95:159:
Semantic Error: Type "NewsTag" was not found.
Sep 21, 2005 9:43:57 PM org.springframework.web.servlet.FrameworkServlet
serviceWrapper
SEVERE: Could not complete request
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 8 in the jsp file: /WEB-INF/jsp/news.jsp
Generated servlet error:
[javac]
/var/lib/tomcat-5/default/work/Catalina/localhost/javacms/org/apache/jsp/WEB_002dINF/jsp/news_jsp.java:95:29:95:35:
Semantic Error: The class file "NewsTag.class" in
"/var/lib/tomcat-5/default/webapps/javacms/WEB-INF/classes/com/snoyman/jcms/taglib"
has an invalid format (duplicate local variable type table).
An error occurred at line: 8 in the jsp file: /WEB-INF/jsp/news.jsp
Generated servlet error:
[javac]
/var/lib/tomcat-5/default/work/Catalina/localhost/javacms/org/apache/jsp/WEB_002dINF/jsp/news_jsp.java:95:61:95:91:
Semantic Error: Type "NewsTag" was not found.
An error occurred at line: 8 in the jsp file: /WEB-INF/jsp/news.jsp
Generated servlet error:
[javac]
/var/lib/tomcat-5/default/work/Catalina/localhost/javacms/org/apache/jsp/WEB_002dINF/jsp/news_jsp.java:95:129:95:159:
Semantic Error: Type "NewsTag" was not found.
at
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:332)
at org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:412)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:472)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:39)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:704)
at
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:474)
at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:409)
at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
at
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:97)
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
at
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:928)
at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:705)
at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:625)
at
org.springframework.web.servlet.FrameworkServlet.serviceWrapper(FrameworkServlet.java:386)
at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:346)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at
com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:118)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:595)
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