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.

Author:

Greg Murray, Justyna Horwat

Constructor Summary

Constructors

Constructor and Description
ExtensionValidator()

Method Summary

Modifier and Type	Method and Description
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(WebResourceRoot resources, 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(WebResourceRoot resources,
                                          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:

resources - The resources configured for this Web Application

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

Returns:

true if all required extensions satisfied

Throws:

IOException - Error reading resources needed for validation

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 - Error reading JAR file