org.apache.catalina.util
Class ExtensionValidator

java.lang.Object
  org.apache.catalina.util.ExtensionValidator

public final class ExtensionValidator

extends java.lang.Object

Ensures that all extension dependies are resolved for a WEB application are met. This class builds a master list of extensions available to an applicaiton and then validates those extensions. See http://java.sun.com/j2se/1.4/docs/guide/extensions/spec.html for a detailed explanation of the extension mechanism in Java.

Version:

$Revision: 1.8 $ $Date: 2003/09/02 21:22:06 $

Author:

Greg Murray, Justyna Horwat

Method Summary

static ExtensionValidator	getInstance() Return an instance of the ExtensionValidator.
static boolean	validateApplication(javax.naming.directory.DirContext dirContext, StandardContext context) Runtime validation of a Web Applicaiton.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

validateApplication

public static boolean validateApplication(javax.naming.directory.DirContext dirContext,
                                          StandardContext context)
                                   throws java.io.IOException

Runtime validation of a Web Applicaiton. This method uses JNDI to look up the resources located under a DirContext. It locates Web Application MANIFEST.MF file in the /META-INF/ directory of the application and all MANIFEST.MF files in each JAR file located in the WEB-INF/lib directory and creates an ArrayList of ManifestResorce objects. These objects are then passed to the validateManifestResources method for validation.

Parameters:

dirContext - The JNDI root of the Web Application

context - The context from which the Logger and path to the application

Returns:

true if all required extensions satisfied

Throws:

java.io.IOException

getInstance

public static ExtensionValidator getInstance()
                                      throws java.io.IOException

Return an instance of the ExtensionValidator. The ExtensionValidator is a singleton.

Throws:

java.io.IOException