org.apache.catalina.util
Class ExtensionValidator

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

public final class ExtensionValidator
extends Object

Ensures that all extension dependencies are resolved for a WEB application are met. This class builds a master list of extensions available to an application and then validates those extensions. See http://docs.oracle.com/javase/1.4.2/docs/guide/extensions/spec.html for a detailed explanation of the extension mechanism in Java.

Version:

$Id: ExtensionValidator.java 1338160 2012-05-14 11:37:21Z kkolinko $

Author:

Greg Murray, Justyna Horwat

Constructor Summary

ExtensionValidator()

Method Summary

static void	addSystemResource(File jarFile) Checks to see if the given system JAR file contains a MANIFEST, and adds it to the container's manifest resources.
static boolean	validateApplication(DirContext dirContext, Context context) Runtime validation of a Web Application.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExtensionValidator

public ExtensionValidator()

Method Detail

validateApplication

public static boolean validateApplication(DirContext dirContext,
                                          Context context)
                                   throws IOException

Runtime validation of a Web Application. 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:

IOException

addSystemResource

public static void addSystemResource(File jarFile)
                              throws IOException

Checks to see if the given system JAR file contains a MANIFEST, and adds it to the container's manifest resources.

Parameters:

jarFile - The system JAR whose manifest to add

Throws:

IOException