org.apache.jasper.servlet
Class JspServletWrapper

java.lang.Object
  org.apache.jasper.servlet.JspServletWrapper

public class JspServletWrapper
extends java.lang.Object

The JSP engine (a.k.a Jasper). The servlet container is responsible for providing a URLClassLoader for the web application context Jasper is being used in. Jasper will try get the Tomcat ServletContext attribute for its ServletContext class loader, if that fails, it uses the parent class loader. In either case, it must be a URLClassLoader.

Author:

Anil K. Vijendran, Harish Prabandham, Remy Maucherat, Kin-man Chung, Glenn Nielsen, Tim Fennell

JspServletWrapper

public JspServletWrapper(javax.servlet.ServletConfig config,
                         Options options,
                         java.lang.String jspUri,
                         boolean isErrorPage,
                         JspRuntimeContext rctxt)
                  throws JasperException

Throws:

JasperException

JspServletWrapper

public JspServletWrapper(javax.servlet.ServletContext servletContext,
                         Options options,
                         java.lang.String tagFilePath,
                         javax.servlet.jsp.tagext.TagInfo tagInfo,
                         JspRuntimeContext rctxt,
                         java.net.URL tagFileJarUrl)
                  throws JasperException

Throws:

JasperException

getJspEngineContext

public JspCompilationContext getJspEngineContext()

setReload

public void setReload(boolean reload)

getServlet

public javax.servlet.Servlet getServlet()
                                 throws javax.servlet.ServletException,
                                        java.io.IOException,
                                        java.io.FileNotFoundException

Throws:

javax.servlet.ServletException

java.io.IOException

java.io.FileNotFoundException

getServletContext

public javax.servlet.ServletContext getServletContext()

setCompilationException

public void setCompilationException(JasperException je)

Sets the compilation exception for this JspServletWrapper.

Parameters:

je - The compilation exception

setServletClassLastModifiedTime

public void setServletClassLastModifiedTime(long lastModified)

Sets the last-modified time of the servlet class file associated with this JspServletWrapper.

Parameters:

lastModified - Last-modified time of servlet class

loadTagFile

public java.lang.Class loadTagFile()
                            throws JasperException

Compile (if needed) and load a tag file

Throws:

JasperException

loadTagFilePrototype

public java.lang.Class loadTagFilePrototype()
                                     throws JasperException

Compile and load a prototype for the Tag file. This is needed when compiling tag files with circular dependencies. A prototpe (skeleton) with no dependencies on other other tag files is generated and compiled.

Throws:

JasperException

getDependants

public java.util.List getDependants()

Get a list of files that the current page has source dependency on.

isTagFile

public boolean isTagFile()

incTripCount

public int incTripCount()

decTripCount

public int decTripCount()

service

public void service(javax.servlet.http.HttpServletRequest request,
                    javax.servlet.http.HttpServletResponse response,
                    boolean precompile)
             throws javax.servlet.ServletException,
                    java.io.IOException,
                    java.io.FileNotFoundException

Throws:

javax.servlet.ServletException

java.io.IOException

java.io.FileNotFoundException

destroy

public void destroy()

getLastModificationTest

public long getLastModificationTest()

Returns:

Returns the lastModificationTest.

setLastModificationTest

public void setLastModificationTest(long lastModificationTest)

Parameters:

lastModificationTest - The lastModificationTest to set.

handleJspException

protected JasperException handleJspException(java.lang.Exception ex)

Attempts to construct a JasperException that contains helpful information about what went wrong. Uses the JSP compiler system to translate the line number in the generated servlet that originated the exception to a line number in the JSP. Then constructs an exception containing that information, and a snippet of the JSP to help debugging. Please see http://bz.apache.org/bugzilla/show_bug.cgi?id=37062 and http://www.tfenne.com/jasper/ for more details.

Parameters:

ex - the exception that was the cause of the problem.

Returns:

a JasperException with more detailed information