alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

What this is

This file is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Other links

The source code

/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
 * [Additional notices, if required by prior licensing conditions]
 *
 */ 


package org.apache.tomcat.deployment;

import org.apache.tomcat.util.XMLParser;
import org.apache.tomcat.util.XMLTree;
import java.io.*;
import java.util.*;

/**
 * I am a class that translates an input steram containting an
 * XML document into an implementation object for the interface
 * WebApplicationDescriptor using the factory supplied.
 */

/**
 * @author Danny Coward
 * @author James Todd [gonzo@eng.sun.com]
 * @author Jason Hunter [jch@eng.sun.com]
 */

public class WebApplicationReader {
    private WebDescriptorFactory factory = null;
    private WebApplicationDescriptor webApplicationDescriptor = null;
    private XMLTree config = null;
    private static final boolean DefaultXMLValidation = true;

    public WebApplicationDescriptor getDescriptor(
        InputStream inputStream, WebDescriptorFactory factory)
    throws Exception {
        return this.getDescriptor(inputStream, factory,
	    DefaultXMLValidation);
    }
		       
    public WebApplicationDescriptor getDescriptor(
        InputStream inputStream, WebDescriptorFactory factory,
	boolean validate)
    throws Exception {
        if (inputStream == null) {
	    String msg = "null inputStream";

	    throw new NullPointerException(msg);
	}

	if (factory == null) {
	    String msg = "null factory";

	    throw new NullPointerException(msg);
	} else {
	    this.factory = factory;
	}

	try {
	    config = (new XMLParser()).process(inputStream, validate);
	} catch (Exception e) {
	    String msg = "can't read config: " + e.getMessage();

	    throw new IllegalStateException(msg);
	}

	try {
	    webApplicationDescriptor =
	        (WebApplicationDescriptor)factory.createDescriptor(
		    WebApplicationDescriptor.class);

	    if (config.getName().equals(Constants.WebApp)) {
	        processIcon();
		processDisplayName();
		processDescription();
		processDistributable();
		processContextParameters();
		processServlets();
		processServletMappings();
		processSessionTimeOut();
		processMIMEMappings();
		processWelcomeFiles();
		processErrorPages();
		processResourceReferences();
		processSecurityConstraints();
		processLoginConfig();
		processSecurityRoles();
		processEnvironmentEntries();    
		processEjbReferences();
                processTagLibConfigs();
	    } else {
	        String msg = "parsing error";

		throw new IllegalStateException(msg);
	    }

            // FIXME: Anil, remove this when you are done - akv
            // System.err.println("Printing the web application descriptor: ");
            // System.err.println(webApplicationDescriptor.toString());
            
	    return webApplicationDescriptor;
	} catch (Throwable t) {
	    String msg = "parsing error: " + t.getMessage();

	    throw new Exception(msg);
	}
    }

    private void processIcon() {
        XMLTree iconTree = this.config.getFirstElement(Constants.ICON);

	if (iconTree != null) {
	    // there is icon information

	    XMLTree smallIconTree =
	        iconTree.getFirstElement(Constants.SMALL_ICON);

	    if (smallIconTree != null) {
	        this.webApplicationDescriptor.setSmallIconUri(
		    smallIconTree.getValue());
	    }
	    
	    XMLTree largeIconTree =
	        iconTree.getFirstElement(Constants.LARGE_ICON);

	    if (largeIconTree != null) {
	        webApplicationDescriptor.setLargeIconUri(
		    largeIconTree.getValue());
	    }
	}
    }

    private void processDisplayName() {
        XMLTree displayNameTree =
	    this.config.getFirstElement(Constants.DISPLAY_NAME);

	if (displayNameTree != null) {
	    this.webApplicationDescriptor.setName(
	        displayNameTree.getValue());
	}
    }

    private void processDescription() {
        XMLTree descriptionTree =
	    this.config.getFirstElement(Constants.DESCRIPTION);

	if (descriptionTree != null) {
	    this.webApplicationDescriptor.setDescription(
	        descriptionTree.getValue());
	}
    }

    private void processDistributable() {
        this.webApplicationDescriptor.setDistributable(
	    config.getFirstElement(Constants.DISTRIBUTABLE) != null);
    }
    
    private void processContextParameters() {
	 Enumeration enum = this.config.elements(Constants.CONTEXT_PARAMETER);
	 while(enum.hasMoreElements()) {
	    XMLTree next = (XMLTree) enum.nextElement();
	    ContextParameter param = (ContextParameter) this.factory.createDescriptor(ContextParameter.class);
	    if (next.getFirstElement(Constants.DESCRIPTION) != null) {
		param.setDescription(next.getFirstElement(Constants.DESCRIPTION).getValue());
	    }
	    param.setName(next.getFirstElement(Constants.ParameterName).getValue());
	    param.setValue(next.getFirstElement(Constants.ParameterValue).getValue());
	    this.webApplicationDescriptor.addContextParameter(param);
	 }
    }


    private void processTagLibConfigs() {
        Enumeration enum = this.config.elements(Constants.TAGLIB);
        while (enum.hasMoreElements()) {
            XMLTree next = (XMLTree) enum.nextElement();
            TagLibConfig config 
                = (TagLibConfig) this.factory.createDescriptor(TagLibConfig.class);
            config.setTagLibURI(next.getFirstElement(Constants.TAGLIB_URI).getValue());
            config.setTagLibLocation(next.getFirstElement(Constants.TAGLIB_LOCATION).getValue());
            this.webApplicationDescriptor.addTagLibConfig(config);
        }
    }
    
     private void processErrorPages() {
	 Enumeration enum = this.config.elements(Constants.ERROR_PAGE);
	 while(enum.hasMoreElements()) {
	    XMLTree next = (XMLTree) enum.nextElement();
	    ErrorPageDescriptor epd = (ErrorPageDescriptor) this.factory.createDescriptor(ErrorPageDescriptor.class);
	    if ( next.getFirstElement(Constants.ERROR_CODE) != null) {
		Integer errorCode = new Integer(next.getFirstElement(Constants.ERROR_CODE).getValue());
		epd.setErrorCode(errorCode.intValue());
	    } else if (next.getFirstElement(Constants.EXCEPTION_TYPE) != null) {
		epd.setExceptionType(next.getFirstElement(Constants.EXCEPTION_TYPE).getValue());
	    } else {
		// problem - both nodes were missing - maybe warn ??
	    }
	    epd.setLocation(next.getFirstElement(Constants.LOCATION).getValue());
	    this.webApplicationDescriptor.addErrorPageDescriptor(epd);
	 }
    }
    
    private void processResourceReferences() {
	 Enumeration enum = this.config.elements(Constants.RESOURCE_REFERENCE);
	 while(enum.hasMoreElements()) {
	    XMLTree next = (XMLTree) enum.nextElement();
	    ResourceReference rrd = (ResourceReference) this.factory.createDescriptor(ResourceReference.class);
	    rrd.setName(next.getFirstElement(Constants.RESOURCE_REFERENCE_NAME).getValue());
	    if (next.getFirstElement(Constants.DESCRIPTION) != null) {
		rrd.setDescription(next.getFirstElement(Constants.DESCRIPTION).getValue());
	    }
	    rrd.setType(next.getFirstElement(Constants.RESOURCE_TYPE).getValue());
	    rrd.setAuthorization(next.getFirstElement(Constants.RESOURCE_AUTHORIZATION).getValue());
	    this.webApplicationDescriptor.addResourceReference(rrd);
	 }
    }
    
    private void processSecurityConstraints() {
	for (Enumeration e = this.config.elements(Constants.SECURITY_CONSTRAINT); e.hasMoreElements();) {
	    XMLTree scTree = (XMLTree) e.nextElement();
	    SecurityConstraint sc = (SecurityConstraint) this.factory.createDescriptor(SecurityConstraint.class);
	    for (Enumeration ee = scTree.elements(Constants.WEB_RESOURCE_COLLECTION); ee.hasMoreElements();) {
		XMLTree wrcTree = (XMLTree) ee.nextElement();
		WebResourceCollection wrc = (WebResourceCollection) this.factory.createDescriptor(WebResourceCollection.class);
		wrc.setName(wrcTree.getFirstElement(Constants.WEB_RESOURCE_NAME).getValue());
		if (wrcTree.getFirstElement(Constants.DESCRIPTION) != null) {
		    wrc.setDescription(wrcTree.getFirstElement(Constants.DESCRIPTION).getValue());
		}
		for (Enumeration eee = wrcTree.elements(Constants.URL_PATTERN); eee.hasMoreElements();) {
		    XMLTree upTree = (XMLTree) eee.nextElement();
		    wrc.addUrlPattern(upTree.getValue());
		}
		for (Enumeration eee = wrcTree.elements(Constants.HTTP_METHOD); eee.hasMoreElements();) {
		    XMLTree hmTree = (XMLTree) eee.nextElement();
		    wrc.addHttpMethod(hmTree.getValue());
		}
		sc.addWebResourceCollection(wrc);
	    }
	    XMLTree acTree = scTree.getFirstElement(Constants.AUTH_CONSTRAINT);
	    if (acTree != null) {
		AuthorizationConstraint ac = (AuthorizationConstraint) this.factory.createDescriptor(AuthorizationConstraint.class);
		if (acTree.getFirstElement(Constants.DESCRIPTION) != null) {
		    ac.setDescription(acTree.getFirstElement(Constants.DESCRIPTION).getValue());
		    for (Enumeration eeee = acTree.elements(Constants.ROLE_NAME); eeee.hasMoreElements();) {
			XMLTree roleNameTree = (XMLTree) eeee.nextElement();
			SecurityRole sr = (SecurityRole) this.factory.createDescriptor(SecurityRole.class);
			sr.setName(roleNameTree.getValue());
			ac.addSecurityRole(sr);
		    }
		    
		}
		sc.setAuthorizationConstraint(ac);
	    }
	    
	    XMLTree udcTree = scTree.getFirstElement(Constants.USERDATA_CONSTRAINT);
	    if (udcTree != null) {
		UserDataConstraint udc = (UserDataConstraint) this.factory.createDescriptor(UserDataConstraint.class);
		if (udcTree.getFirstElement(Constants.DESCRIPTION) != null) {
		    udc.setDescription(udcTree.getFirstElement(Constants.DESCRIPTION).getValue());
		}
		udc.setTransportGuarantee(udcTree.getFirstElement(Constants.TRANSPORT_GUARANTEE).getValue());
		sc.setUserDataConstraint(udc);
	    }
	    this.webApplicationDescriptor.addSecurityConstraint(sc);
	}
    }
    
    private void processLoginConfig() {
	XMLTree flTree = this.config.getFirstElement(Constants.LOGIN_CONFIG);
	if (flTree != null) {
	    LoginConfiguration lc = (LoginConfiguration) this.factory.createDescriptor(LoginConfiguration.class);
	    if (flTree.getFirstElement(Constants.AUTH_METHOD) != null) {
		lc.setAuthenticationMethod(flTree.getFirstElement(Constants.AUTH_METHOD).getValue());
	    }
	    if (flTree.getFirstElement(Constants.REALM_NAME) != null) {
		lc.setRealmName(flTree.getFirstElement(Constants.REALM_NAME).getValue());
	    }
	    if (flTree.getFirstElement(Constants.FORM_LOGIN_CONFIG) != null) {
		XMLTree formTree = flTree.getFirstElement(Constants.FORM_LOGIN_CONFIG);
		lc.setFormLoginPage(formTree.getFirstElement(Constants.FORM_LOGIN_PAGE).getValue());
		lc.setFormErrorPage(formTree.getFirstElement(Constants.FORM_ERROR_PAGE).getValue());
	    }
	    this.webApplicationDescriptor.setLoginConfiguration(lc);
	}
	
    }
    
    private void processSecurityRoles() {
	Enumeration enum = this.config.elements(Constants.SECURITY_ROLE);
	 while(enum.hasMoreElements()) {
	    XMLTree next = (XMLTree) enum.nextElement();
	    SecurityRole sr = (SecurityRole) this.factory.createDescriptor(SecurityRole.class);
	    if ( next.getFirstElement(Constants.DESCRIPTION) != null) {
		sr.setDescription(next.getFirstElement(Constants.DESCRIPTION).getValue());
	    }
	    sr.setName(next.getFirstElement(Constants.ROLE_NAME).getValue());
	    this.webApplicationDescriptor.addSecurityRole(sr);
	}
    }
    
    private void processEnvironmentEntries() {
	Enumeration enum = this.config.elements(Constants.ENVIRONMENT_ENTRY);
	 while(enum.hasMoreElements()) {
	    XMLTree next = (XMLTree) enum.nextElement();
	    EnvironmentEntry ee = (EnvironmentEntry) this.factory.createDescriptor(EnvironmentEntry.class);
	    if ( next.getFirstElement(Constants.DESCRIPTION) != null) {
		ee.setDescription(next.getFirstElement(Constants.DESCRIPTION).getValue());
	    }
	    ee.setName(next.getFirstElement(Constants.ENVIRONMENT_NAME).getValue());
	    if (next.getFirstElement(Constants.ENVIRONMENT_VALUE) != null) {
		ee.setValue(next.getFirstElement(Constants.ENVIRONMENT_VALUE).getValue());
	    }
	    ee.setType(next.getFirstElement(Constants.ENVIRONMENT_TYPE).getValue());
	    this.webApplicationDescriptor.addEnvironmentEntry(ee);
	}
    }
    

    
    private void processEjbReferences() {
	Enumeration enum = this.config.elements(Constants.EJB_REFERENCE);
	 while(enum.hasMoreElements()) {
	    XMLTree next = (XMLTree) enum.nextElement();
	    EjbReference ejbr = (EjbReference) this.factory.createDescriptor(EjbReference.class);
	    if (next.getFirstElement(Constants.DESCRIPTION) != null) {
		ejbr.setName(next.getFirstElement(Constants.DESCRIPTION).getValue());
	    }
	    
	    ejbr.setName(next.getFirstElement(Constants.EJB_NAME).getValue());
	    ejbr.setType(next.getFirstElement(Constants.EJB_TYPE).getValue());
	    ejbr.setHomeClassName(next.getFirstElement(Constants.EJB_HOME).getValue());
	    ejbr.setRemoteClassName(next.getFirstElement(Constants.EJB_REMOTE).getValue());
	    if (next.getFirstElement(Constants.EJB_LINK) != null) {
		ejbr.setLinkName(next.getFirstElement(Constants.EJB_LINK).getValue());
	    }
	    this.webApplicationDescriptor.addEjbReference(ejbr);
	}
	
    }
    
    
					 
    private void processMIMEMappings() {
        Enumeration enum = parseMIMEMappings(
	    this.config.elements(Constants.MIMEMapping)).elements();

	try {
	    while (enum.hasMoreElements()) {
	        this.webApplicationDescriptor.addMimeMapping(
		    (MimeMapping)enum.nextElement());
	    }
	} catch (Exception e) {
	    System.out.println("parser error: MIMEMappings");
	}
    }

    private Vector parseMIMEMappings(Enumeration mimeMaps) {
        Vector mimeMappings = new Vector();

	while (mimeMaps.hasMoreElements()) {
	    XMLTree x = (XMLTree)mimeMaps.nextElement();
	    String extension = null;
	    String mimeType = null;
	    Enumeration enum =
	        x.getElements(Constants.MIMEMappingExtension).elements();

	    while (enum.hasMoreElements()) {
		extension =
		    (String)((XMLTree)enum.nextElement()).getValue().trim();
	    }

	    enum = x.getElements(Constants.MIMEMappingType).elements();

	    while (enum.hasMoreElements()) {
		mimeType =
		    (String)((XMLTree)enum.nextElement()).getValue().trim();
	    }

	    if (extension != null &&
	        extension.length() > 0 &&
		mimeType != null &&
		mimeType.length() > 0) {
	        try {
		    MimeMapping mimeMapping =
		        (MimeMapping)this.factory.createDescriptor(
			    MimeMapping.class);
		    mimeMapping.setExtension(extension);
		    mimeMapping.setMimeType(mimeType);
		    mimeMappings.addElement(mimeMapping);
		} catch (Exception e) {
		}
	    }
	}

	return mimeMappings;
    }

    private void processServlets() {
	Enumeration enum = this.config.elements(Constants.Servlet);
	while(enum.hasMoreElements()) {
	    XMLTree next = (XMLTree) enum.nextElement();
	    
	    WebComponentDescriptor descriptor = null;
	    
	    
	    
	    // first we have to work out whether it s a servlet of jsp
	    if (next.getFirstElement(Constants.ServletClass) != null) {
		// its a servlet
		descriptor = (ServletDescriptor) this.factory.createDescriptor(ServletDescriptor.class);
		((ServletDescriptor) descriptor).setClassName(next.getFirstElement(Constants.ServletClass).getValue());
	    } else {
		descriptor = (JspDescriptor) this.factory.createDescriptor(JspDescriptor.class);
		((JspDescriptor) descriptor).setJspFileName(next.getFirstElement(Constants.JSP_FILENAME).getValue());
	    }

	    if (next.getFirstElement(Constants.LOAD_ON_START_UP) != null) {
//		Integer loadOnStartUp = new Integer(0);
		Integer loadOnStartUp = new Integer(Integer.MAX_VALUE);

		try {
			loadOnStartUp = new Integer(next.getFirstElement(Constants.LOAD_ON_START_UP).getValue());
		} catch (NumberFormatException nfe) {
		}

		descriptor.setLoadOnStartUp(loadOnStartUp.intValue());
	    }
	    // init params
	    Enumeration initParamTrees = next.getElements(Constants.Parameter).elements();
	    while(initParamTrees.hasMoreElements()) {
		XMLTree paramTree = (XMLTree)initParamTrees.nextElement();
                String parameterName = null;
                String parameterValue = null;
	
		InitializationParameter ip =
		    (InitializationParameter)this.factory.createDescriptor(
		        InitializationParameter.class);
		
		ip.setName(paramTree.getFirstElement(Constants.ParameterName).getValue());
		ip.setValue(paramTree.getFirstElement(Constants.ParameterValue).getValue());
		if ( paramTree.getFirstElement(Constants.DESCRIPTION) != null ) {
		    ip.setDescription(paramTree.getFirstElement(Constants.DESCRIPTION).getValue());
		}
		descriptor.addInitializationParameter(ip);
	    }
	    
	    Enumeration roleRefsTree = next.getElements(Constants.SECURITY_ROLE_REFERENCE).elements();
	    while(roleRefsTree.hasMoreElements()) {
		XMLTree roleRefTree = (XMLTree)roleRefsTree.nextElement();
                
	
		SecurityRoleReference srr =
		    (SecurityRoleReference)this.factory.createDescriptor(
		        SecurityRoleReference.class);
		if ( roleRefTree.getFirstElement(Constants.DESCRIPTION) != null ) {
		    srr.setDescription(roleRefTree.getFirstElement(Constants.DESCRIPTION).getValue());
		}
		
		SecurityRole sr =
		    (SecurityRole)this.factory.createDescriptor(
		        SecurityRole.class);
		sr.setName(roleRefTree.getFirstElement(Constants.ROLE_LINK).getValue());
		
		srr.setSecurityRoleLink(   sr  );
		srr.setRolename(roleRefTree.getFirstElement(Constants.ROLE_NAME).getValue());
		if ( roleRefTree.getFirstElement(Constants.DESCRIPTION) != null ) {
		    srr.setDescription(roleRefTree.getFirstElement(Constants.DESCRIPTION).getValue());
		}
		descriptor.addSecurityRoleReference(srr);
	    }
	    
	    XMLTree iconTree = next.getFirstElement(Constants.ICON);
	    if (iconTree != null) {
		XMLTree smallIconTree =
		    iconTree.getFirstElement(Constants.SMALL_ICON);
		if (smallIconTree != null) {
		    descriptor.setSmallIconUri(
			smallIconTree.getValue());
		}
		XMLTree largeIconTree =
		    iconTree.getFirstElement(Constants.LARGE_ICON);
		if (largeIconTree != null) {
		    descriptor.setLargeIconUri(
			largeIconTree.getValue());
		}
	    }
	    
	    XMLTree displayNameTree = next.getFirstElement(Constants.DISPLAY_NAME);
	    if (displayNameTree != null) {
		descriptor.setName(displayNameTree.getValue());
	    }
   

   
	    XMLTree descriptionTree = next.getFirstElement(Constants.DESCRIPTION);
	    if (descriptionTree != null) {
		descriptor.setDescription(descriptionTree.getValue());
	    }
		
	    descriptor.setCanonicalName(next.getFirstElement(Constants.ServletName).getValue());

	    this.webApplicationDescriptor.addWebComponentDescriptor(descriptor);
	}
    }
    
    private void processServletMappings() {
	Enumeration enum = this.config.elements(Constants.ServletMapping);
	while(enum.hasMoreElements()) {
	    XMLTree next = (XMLTree) enum.nextElement();
	    WebComponentDescriptor descriptor = this.getWebComponentDescriptorByName(next.getFirstElement(Constants.ServletName).getValue());
	    descriptor.addUrlPattern(next.getFirstElement(Constants.URLPattern).getValue());
	}
    }
    
    private WebComponentDescriptor getWebComponentDescriptorByName(String name) {
	for (Enumeration e = this.webApplicationDescriptor.getWebComponentDescriptors(); e.hasMoreElements();) {
	    WebComponentDescriptor next = (WebComponentDescriptor) e.nextElement();
	    if (next.getCanonicalName().equals(name)) {
		return next;
	    }
	}
	throw new RuntimeException("There is no web component by the name of " + name + " here.");
    }

    
    
    private Vector parseServlets(Enumeration servlets,
        Enumeration servletMaps) {
        Vector webComponentDescriptors = new Vector();

        while (servlets.hasMoreElements()) {
            XMLTree x = (XMLTree)servlets.nextElement();
            String name = null;
            String clazz = null;
            Enumeration e =
                x.getElements(Constants.ServletName).elements();

            while (e.hasMoreElements()) {
                name =
                    (String)((XMLTree)e.nextElement()).getValue().trim();
            }    

            e = x.getElements(Constants.ServletClass).elements();

            while (e.hasMoreElements()) {
                clazz =
                    (String)((XMLTree)e.nextElement()).getValue().trim();
            }    

	    ServletDescriptorImpl servletDescriptor =
	        new ServletDescriptorImpl(name, clazz);

            e = x.getElements(Constants.Parameter).elements();

            while (e.hasMoreElements()) {
                XMLTree x1 = (XMLTree)e.nextElement();
                String parameterName = null;
                String parameterValue = null;
                Enumeration e1 =
                    x1.getElements(Constants.ParameterName).elements();
 
                while (e1.hasMoreElements()) {
                    parameterName =
                        (String)((XMLTree)e1.nextElement()).getValue().trim();
                }
                 
                e1 = x1.getElements(Constants.ParameterValue).elements();
 
                while (e1.hasMoreElements()) {
                    parameterValue =
                        (String)((XMLTree)e1.nextElement()).getValue().trim();
                }
		InitializationParameter ip =
		    (InitializationParameter)this.factory.createDescriptor(
		        InitializationParameter.class);
		ip.setName(parameterName);
		ip.setValue(parameterValue);
		servletDescriptor.addInitializationParameter(ip);
            }

	    webComponentDescriptors.addElement(servletDescriptor);
        }

	while (servletMaps.hasMoreElements()) {
	    XMLTree x = (XMLTree)servletMaps.nextElement();
	    String servletName = null;
	    String map = null;
	    Enumeration e =
	        x.getElements(Constants.ServletName).elements();

	    while (e.hasMoreElements()) {
		servletName =
                    (String)((XMLTree)e.nextElement()).getValue().trim();
	    }

	    e = x.getElements(Constants.URLPattern).elements();

	    while (e.hasMoreElements()) {
		map = (String)((XMLTree)e.nextElement()).getValue().trim();
	    }

	    if (servletName != null &&
	        servletName.length() > 0 &&
		map != null &&
		map.length() > 0) {
		WebComponentDescriptor webComponentDescriptor = null;
		Enumeration enum = webComponentDescriptors.elements();

		while (enum.hasMoreElements()) {
		    WebComponentDescriptor wcd =
		        (WebComponentDescriptor)enum.nextElement();

		    if (wcd.getName().equals(servletName)) {
		        webComponentDescriptor = wcd;

			break;
		    }
		}

		if (webComponentDescriptor == null) {
		    webComponentDescriptor =
		        new ServletDescriptorImpl(servletName);
		    webComponentDescriptors.addElement(
			webComponentDescriptor);
		}

		webComponentDescriptor.addUrlPattern(map);
	    }
	}

	return webComponentDescriptors;
    }

    private void processWelcomeFiles() {
	XMLTree wflTree = this.config.getFirstElement(Constants.WelcomeFileList);
	if (wflTree != null) {
	    Enumeration enum = wflTree.elements(Constants.WelcomeFile);
	    while(enum.hasMoreElements()) {
		XMLTree next = (XMLTree) enum.nextElement();
		this.webApplicationDescriptor.addWelcomeFile(next.getValue());
	    }
	}
    }

    private Vector parseWelcomeFiles(Enumeration welcomeFiles) {
        Vector welcomeFilesV = new Vector();

        while (welcomeFiles.hasMoreElements()) {
	    XMLTree x = (XMLTree)welcomeFiles.nextElement();

            welcomeFilesV.addElement((String)x.getValue().trim());
	}

	return welcomeFilesV;
    }

    private void processSessionTimeOut() {
	if (this.config.getFirstElement(Constants.SESSION_CONFIG) != null) {
    
	    this.webApplicationDescriptor.setSessionTimeout(
		getSessionTimeOut(this.config.getFirstElement(
		    Constants.SESSION_CONFIG).elements(
			Constants.SessionTimeOut)));
	}
    }

    private int getSessionTimeOut(Enumeration sessionTimeOuts) {
        Integer sessionTimeOut = new Integer(-1);

	while (sessionTimeOuts.hasMoreElements()) {
	    XMLTree x = (XMLTree)sessionTimeOuts.nextElement();

	    try {
	        sessionTimeOut = new Integer(x.getValue().trim());
	    } catch (Exception e) {
	    }
	}
	
	return sessionTimeOut.intValue();
    }

}
... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.