/*
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.web.common;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamReader;
import org.jboss.as.server.deployment.AttachmentKey;
import org.jboss.as.server.deployment.DeploymentUnit;
import org.jboss.dmr.ModelNode;
import org.jboss.metadata.parser.jsp.TldMetaDataParser;
import org.jboss.metadata.parser.util.NoopXMLResolver;
import org.jboss.metadata.web.spec.TldMetaData;
import org.jboss.modules.Module;
import org.jboss.modules.ModuleClassLoader;
import org.jboss.modules.ModuleIdentifier;
import org.jboss.modules.ModuleLoadException;
/**
* Internal helper creating a shared TLD metadata list based on the domain configuration.
*
* @author Emanuel Muckenhuber
* @author Stan Silvert
*/
public class SharedTldsMetaDataBuilder {
public static final AttachmentKey<List<TldMetaData>> ATTACHMENT_KEY = AttachmentKey.create(List.class);
private static final String[] JSTL_TAGLIBS = { "c-1_0-rt.tld", "c-1_0.tld", "c.tld", "fmt-1_0-rt.tld", "fmt-1_0.tld", "fmt.tld", "fn.tld", "permittedTaglibs.tld", "scriptfree.tld", "sql-1_0-rt.tld", "sql-1_0.tld", "sql.tld", "x-1_0-rt.tld", "x-1_0.tld", "x.tld" };
private final ArrayList<TldMetaData> jstlTlds = new ArrayList<TldMetaData>();
// Not used right now due to hardcoding
/** The common container config. */
private final ModelNode containerConfig;
public SharedTldsMetaDataBuilder(final ModelNode containerConfig) {
this.containerConfig = containerConfig;
init();
}
private void init() {
try {
ModuleClassLoader jstl = Module.getModuleFromCallerModuleLoader(ModuleIdentifier.create("javax.servlet.jstl.api")).getClassLoader();
for (String tld : JSTL_TAGLIBS) {
InputStream is = jstl.getResourceAsStream("META-INF/" + tld);
if (is != null) {
TldMetaData tldMetaData = parseTLD(tld, is);
jstlTlds.add(tldMetaData);
}
}
} catch (ModuleLoadException e) {
// Ignore
} catch (Exception e) {
// Ignore
}
}
public List<TldMetaData> getSharedTlds(DeploymentUnit deploymentUnit) {
final List<TldMetaData> metadata = new ArrayList<TldMetaData>();
metadata.addAll(jstlTlds);
List<TldMetaData> additionalSharedTlds = deploymentUnit.getAttachment(ATTACHMENT_KEY);
if (additionalSharedTlds != null) {
metadata.addAll(additionalSharedTlds);
}
return metadata;
}
private TldMetaData parseTLD(String tld, InputStream is)
throws Exception {
try {
final XMLInputFactory inputFactory = XMLInputFactory.newInstance();
inputFactory.setXMLResolver(NoopXMLResolver.create());
XMLStreamReader xmlReader = inputFactory.createXMLStreamReader(is);
return TldMetaDataParser.parse(xmlReader );
} finally {
try {
if (is != null) {
is.close();
}
} catch (IOException e) {
// Ignore
}
}
}
}