/*
* (C) Copyright 2006-2008 Nuxeo SA (http://nuxeo.com/) and others.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Contributors:
* bstefanescu
*
* $Id$
*/
package org.nuxeo.ecm.webengine.model.impl;
import java.io.File;
import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URL;
import java.text.ParseException;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import org.nuxeo.ecm.webengine.WebEngine;
import org.nuxeo.ecm.webengine.WebException;
import org.nuxeo.ecm.webengine.loader.ClassProxy;
import org.nuxeo.ecm.webengine.model.Module;
import org.nuxeo.ecm.webengine.model.Resource;
import org.nuxeo.ecm.webengine.model.ResourceType;
import org.nuxeo.ecm.webengine.model.TemplateNotFoundException;
import org.nuxeo.ecm.webengine.model.TypeVisibility;
import org.nuxeo.ecm.webengine.model.WebContext;
import org.nuxeo.ecm.webengine.scripting.ScriptFile;
import org.nuxeo.ecm.webengine.security.Guard;
import org.nuxeo.ecm.webengine.security.PermissionService;
import org.nuxeo.runtime.annotations.AnnotationManager;
import com.sun.jersey.server.spi.component.ResourceComponentConstructor;
/**
* @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
*/
public abstract class AbstractResourceType implements ResourceType {
protected final WebEngine engine;
protected final Module owner;
protected final ResourceComponentConstructor constructor;
protected final String name;
protected int visibility = TypeVisibility.DEFAULT;
protected AbstractResourceType superType;
protected volatile ClassProxy clazz;
protected volatile Guard guard = Guard.DEFAULT;
protected volatile Set<String> facets;
protected volatile ConcurrentMap<String, ScriptFile> templateCache;
protected AbstractResourceType(WebEngine engine, Module module, AbstractResourceType superType, String name,
ClassProxy clazz, ResourceComponentConstructor constructor, int visibility) {
this.engine = engine;
owner = module;
this.superType = superType;
this.name = name;
this.clazz = clazz;
this.constructor = constructor;
this.visibility = visibility;
templateCache = new ConcurrentHashMap<String, ScriptFile>();
AnnotationManager mgr = engine.getAnnotationManager();
loadAnnotations(mgr);
}
public int getVisibility() {
return visibility;
}
protected abstract void loadAnnotations(AnnotationManager annoMgr);
@Override
public ResourceType getSuperType() {
return superType;
}
public Module getOwnerModule() {
return owner;
}
@Override
public Guard getGuard() {
return guard;
}
@Override
public Set<String> getFacets() {
return facets;
}
@Override
public boolean hasFacet(String facet) {
return facets != null && facets.contains(facet);
}
@Override
public String getName() {
return name;
}
@Override
@SuppressWarnings("unchecked")
public Class<Resource> getResourceClass() {
return (Class<Resource>) clazz.get();
}
@Override
public <T extends Resource> T newInstance(Class<T> typeof, WebContext context) {
try {
return typeof.cast(constructor.construct(context.getServerHttpContext()));
} catch (ReflectiveOperationException e) {
throw WebException.wrap("Failed to instantiate web object: " + clazz, e);
}
}
@Override
public boolean isEnabled(Resource ctx) {
return guard.check(ctx);
}
@Override
public boolean isDerivedFrom(String type) {
if (type.equals(name)) {
return true;
}
if (superType != null) {
return superType.isDerivedFrom(type);
}
return false;
}
@Override
public void flushCache() {
templateCache = new ConcurrentHashMap<String, ScriptFile>();
}
protected void loadGuardFromAnnoation(Class<?> c) {
org.nuxeo.ecm.webengine.model.Guard ag = c.getAnnotation(org.nuxeo.ecm.webengine.model.Guard.class);
if (ag != null) {
String g = ag.value();
if (g != null && g.length() > 0) {
try {
guard = PermissionService.parse(g);
} catch (ParseException e) {
throw WebException.wrap("Failed to parse guard: " + g + " on WebObject " + c.getName(), e);
}
} else {
Class<?> gc = ag.type();
if (gc != null) {
try {
guard = (Guard) gc.newInstance();
} catch (ReflectiveOperationException e) {
throw WebException.wrap("Failed to instantiate guard handler: " + gc.getName()
+ " on WebObject " + c.getName(), e);
}
}
}
}
}
@Override
public String toString() {
return name + " extends " + superType + " [" + getResourceClass().getName() + "]";
}
@Override
public ScriptFile getView(Module module, String name) {
ScriptFile file = findView(module, name);
if (file == null) {
throw new TemplateNotFoundException(this, name);
}
return file;
}
public ScriptFile findView(Module module, String name) {
ScriptFile file = templateCache.get(name);
if (file != null) {
return file;
}
file = findSkinTemplate(module, name);
if (file == null) {
file = findTypeTemplate(module, name);
}
if (file == null) {
AbstractResourceType t = (AbstractResourceType) getSuperType();
if (t != null) {
file = t.findView(module, name);
}
}
if (file != null) {
templateCache.put(name, file);
}
return file;
}
protected ScriptFile findSkinTemplate(Module module, String name) {
return module.getFile(new StringBuilder().append("views").append(File.separatorChar).append(this.name).append(
File.separatorChar).append(name).toString());
}
protected ScriptFile findTypeTemplate(Module module, String name) {
String path = resolveResourcePath(clazz.getClassName(), name);
URL url = clazz.get().getResource(path);
if (url != null) {
if (!"file".equals(url.getProtocol())) {
// TODO ScriptFile is not supporting URLs .. must refactor ScriptFile
return null;
}
try {
return new ScriptFile(new File(url.toURI()));
} catch (IOException | URISyntaxException e) {
throw WebException.wrap("Failed to convert URL to URI: " + url, e);
}
}
return null;
}
protected String resolveResourcePath(String className, String fileName) {
// compute resource path for resource class name
String path = className;
int p = path.lastIndexOf('.');
if (p > -1) {
path = path.substring(0, p);
path = path.replace('.', '/');
return new StringBuilder().append('/').append(path).append('/').append(fileName).toString();
}
return new StringBuilder().append('/').append(fileName).toString();
}
}