com.sun.faces.application.resource.ClasspathResourceHelper Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jsf-impl Show documentation
Show all versions of jsf-impl Show documentation
This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
The newest version!
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.faces.application.resource;
import com.sun.faces.config.WebConfiguration;
import com.sun.faces.util.Util;
import javax.faces.application.ProjectStage;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import static com.sun.faces.config.WebConfiguration.BooleanWebContextInitParameter.*;
import com.sun.faces.facelets.impl.DefaultResourceResolver;
import javax.faces.view.facelets.ResourceResolver;
/**
*
* A {@link ResourceHelper} implementation for finding/serving resources
* found on the classpath within the META-INF/resources directory.
*
*
* @since 2.0
*/
public class ClasspathResourceHelper extends ResourceHelper {
private static final String BASE_RESOURCE_PATH = "META-INF/resources";
private boolean cacheTimestamp;
private volatile ZipDirectoryEntryScanner libraryScanner;
private boolean enableMissingResourceLibraryDetection;
// ------------------------------------------------------------ Constructors
public ClasspathResourceHelper() {
WebConfiguration webconfig = WebConfiguration.getInstance();
cacheTimestamp = webconfig.isOptionEnabled(CacheResourceModificationTimestamp);
enableMissingResourceLibraryDetection =
webconfig.isOptionEnabled(EnableMissingResourceLibraryDetection);
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final ClasspathResourceHelper other = (ClasspathResourceHelper) obj;
if (this.cacheTimestamp != other.cacheTimestamp) {
return false;
}
if (this.enableMissingResourceLibraryDetection != other.enableMissingResourceLibraryDetection) {
return false;
}
return true;
}
@Override
public int hashCode() {
int hash = 5;
hash = 67 * hash + (this.cacheTimestamp ? 1 : 0);
hash = 67 * hash + (this.enableMissingResourceLibraryDetection ? 1 : 0);
return hash;
}
// --------------------------------------------- Methods from ResourceHelper
/**
* @see com.sun.faces.application.resource.ResourceHelper#getBaseResourcePath()
*/
public String getBaseResourcePath() {
return BASE_RESOURCE_PATH;
}
@Override
public String getBaseContractsPath() {
return WebConfiguration.META_INF_CONTRACTS_DIR;
}
/**
* @see ResourceHelper#getNonCompressedInputStream(com.sun.faces.application.resource.ResourceInfo, javax.faces.context.FacesContext)
*/
protected InputStream getNonCompressedInputStream(ResourceInfo resource, FacesContext ctx) throws IOException {
InputStream in = null;
if (ctx.isProjectStage(ProjectStage.Development)) {
ClassLoader loader = Util.getCurrentLoader(getClass());
String path = resource.getPath();
if (loader.getResource(path) != null) {
in = loader.getResource(path).openStream();
}
if (in == null && getClass().getClassLoader().getResource(path) != null) {
in = getClass().getClassLoader().getResource(path).openStream();
}
} else {
ClassLoader loader = Util.getCurrentLoader(getClass());
String path = resource.getPath();
in = loader.getResourceAsStream(path);
if (in == null) {
in = getClass().getClassLoader().getResourceAsStream(path);
}
}
return in;
}
/**
* @see ResourceHelper#getURL(com.sun.faces.application.resource.ResourceInfo, javax.faces.context.FacesContext)
*/
public URL getURL(ResourceInfo resource, FacesContext ctx) {
ResourceResolver nonDefaultResourceResolver = (ResourceResolver) ctx.getAttributes().get(DefaultResourceResolver.NON_DEFAULT_RESOURCE_RESOLVER_PARAM_NAME);
String path = resource.getPath();
URL url = null;
if (null != nonDefaultResourceResolver) {
url = nonDefaultResourceResolver.resolveUrl(path);
}
if (null == url) {
ClassLoader loader = Util.getCurrentLoader(this.getClass());
url = loader.getResource(path);
if (url == null) {
// try using this class' loader (necessary when running in OSGi)
url = this.getClass().getClassLoader().getResource(resource.getPath());
}
}
return url;
}
/**
* @see ResourceHelper#findLibrary(String, String, String, javax.faces.context.FacesContext)
*/
public LibraryInfo findLibrary(String libraryName,
String localePrefix,
String contract, FacesContext ctx) {
ClassLoader loader = Util.getCurrentLoader(this);
String basePath;
if (localePrefix == null) {
basePath = getBasePath(contract) + '/' + libraryName + '/';
} else {
basePath = getBasePath(contract)
+ '/'
+ localePrefix
+ '/'
+ libraryName
+ '/';
}
URL basePathURL = loader.getResource(basePath);
if (basePathURL == null) {
// try using this class' loader (necessary when running in OSGi)
basePathURL = this.getClass().getClassLoader().getResource(basePath);
if (basePathURL == null) {
return null;
}
}
return new LibraryInfo(libraryName, null, localePrefix, contract, this);
}
public LibraryInfo findLibraryWithZipDirectoryEntryScan(String libraryName,
String localePrefix,
String contract, FacesContext ctx, boolean forceScan) {
ClassLoader loader = Util.getCurrentLoader(this);
String basePath;
if (localePrefix == null) {
basePath = getBasePath(contract) + '/' + libraryName + '/';
} else {
basePath = getBasePath(contract)
+ '/'
+ localePrefix
+ '/'
+ libraryName
+ '/';
}
URL basePathURL = loader.getResource(basePath);
if (basePathURL == null) {
// try using this class' loader (necessary when running in OSGi)
basePathURL = this.getClass().getClassLoader().getResource(basePath);
if (basePathURL == null) {
if (null != localePrefix && libraryName.equals("javax.faces")) {
return null;
}
if (enableMissingResourceLibraryDetection || forceScan) {
if (null == libraryScanner) {
libraryScanner = new ZipDirectoryEntryScanner();
}
if (!libraryScanner.libraryExists(libraryName, localePrefix)) {
return null;
}
}
}
}
return new LibraryInfo(libraryName, null, localePrefix, contract, this);
}
/**
* @see ResourceHelper#findResource(LibraryInfo, String, String, boolean, javax.faces.context.FacesContext)
*/
public ResourceInfo findResource(LibraryInfo library,
String resourceName,
String localePrefix,
boolean compressable,
FacesContext ctx) {
resourceName = trimLeadingSlash(resourceName);
ContractInfo [] outContract = new ContractInfo[1];
outContract[0] = null;
String [] outBasePath = new String[1];
outBasePath[0] = null;
ClassLoader loader = Util.getCurrentLoader(this);
URL basePathURL = findPathConsideringContracts(loader, library, resourceName,
localePrefix, outContract, outBasePath, ctx);
String basePath = outBasePath[0];
if (null == basePathURL) {
basePath = deriveBasePath(library, resourceName, localePrefix);
basePathURL = loader.getResource(basePath);
}
if (null == basePathURL) {
// try using this class' loader (necessary when running in OSGi)
basePathURL = this.getClass().getClassLoader().getResource(basePath);
if (basePathURL == null) {
// Try it without the localePrefix
if (library != null) {
basePath = library.getPath(null) + '/' + resourceName;
} else {
basePath = getBaseResourcePath() + '/' + resourceName;
}
basePathURL = loader.getResource(basePath);
if (basePathURL == null) {
// try using this class' loader (necessary when running in OSGi)
basePathURL = this.getClass().getClassLoader().getResource(basePath);
if (basePathURL == null) {
return null;
}
}
localePrefix = null;
}
}
ClientResourceInfo value;
if (library != null) {
value = new ClientResourceInfo(library,
outContract[0],
resourceName,
null,
compressable,
resourceSupportsEL(resourceName, library.getName(), ctx),
ctx.isProjectStage(ProjectStage.Development),
cacheTimestamp);
} else {
value = new ClientResourceInfo(outContract[0],
resourceName,
null,
localePrefix,
this,
compressable,
resourceSupportsEL(resourceName, null, ctx),
ctx.isProjectStage(ProjectStage.Development),
cacheTimestamp);
}
if (value.isCompressable()) {
value = handleCompression(value);
}
return value;
}
private String deriveBasePath(LibraryInfo library,
String resourceName,
String localePrefix) {
String basePath = null;
if (library != null) {
basePath = library.getPath(localePrefix) + '/' + resourceName;
} else {
if (localePrefix == null) {
basePath = getBaseResourcePath() + '/' + resourceName;
} else {
basePath = getBaseResourcePath()
+ '/'
+ localePrefix
+ '/'
+ resourceName;
}
}
return basePath;
}
private URL findPathConsideringContracts(ClassLoader loader,
LibraryInfo library,
String resourceName,
String localePrefix,
ContractInfo [] outContract,
String [] outBasePath,
FacesContext ctx) {
UIViewRoot root = ctx.getViewRoot();
List contracts = null;
URL result = null;
if (library != null) {
if(library.getContract() == null) {
contracts = Collections.emptyList();
} else {
contracts = new ArrayList(1);
contracts.add(library.getContract());
}
} else if (root == null) {
String contractName = ctx.getExternalContext().getRequestParameterMap()
.get("con");
if (null != contractName && 0 < contractName.length()) {
contracts = new ArrayList();
contracts.add(contractName);
} else {
return null;
}
} else {
contracts = ctx.getResourceLibraryContracts();
}
String basePath = null;
for (String curContract : contracts) {
if (library != null) {
// PENDING(fcaputo) no need to iterate over the contracts, if we have a library
basePath = library.getPath(localePrefix) + '/' + resourceName;
} else {
if (localePrefix == null) {
basePath = getBaseContractsPath() + '/' + curContract + '/' + resourceName;
} else {
basePath = getBaseContractsPath()
+ '/' + curContract
+ '/'
+ localePrefix
+ '/'
+ resourceName;
}
}
if (null != (result = loader.getResource(basePath))) {
outContract[0] = new ContractInfo(curContract);
outBasePath[0] = basePath;
break;
} else {
basePath = null;
}
}
return result;
}
}