/
DiscoveryStrategy.java
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/
DiscoveryStrategy.java
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/*
* JBoss, Home of Professional Open Source
* Copyright 2014, Red Hat, Inc. and/or its affiliates, and individual
* contributors by the @authors tag. See the copyright.txt in the
* distribution for a full listing of individual contributors.
*
* 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.
*/
package org.jboss.weld.environment.se.discovery.url;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import org.jboss.weld.bootstrap.api.Bootstrap;
import org.jboss.weld.bootstrap.spi.BeansXml;
import org.jboss.weld.environment.se.discovery.AbstractWeldSEDeployment;
import org.jboss.weld.environment.se.discovery.WeldSEBeanDeploymentArchive;
import org.jboss.weld.environment.se.logging.WeldSELogger;
import org.jboss.weld.resources.spi.ResourceLoader;
/**
* DiscoveryStrategy defines a strategy for discovering the Weld SE archive and processing the separate archives.
*
* @author Matej Briškár
*/
public abstract class DiscoveryStrategy {
private final ResourceLoader resourceLoader;
private final Bootstrap bootstrap;
private Collection<BeanArchiveBuilder> builders;
public static final String[] RESOURCES = { AbstractWeldSEDeployment.BEANS_XML };
private final Set<WeldSEBeanDeploymentArchive> deploymentArchives = new HashSet<WeldSEBeanDeploymentArchive>();
public DiscoveryStrategy(ResourceLoader resourceLoader, Bootstrap bootstrap) {
this.resourceLoader = resourceLoader;
this.bootstrap = bootstrap;
}
/**
* Discovers and return all the BeanDeploymentArchives found using the URLScanner.scan() method.
*/
public Set<WeldSEBeanDeploymentArchive> discoverArchives() {
builders = new URLScanner(resourceLoader, bootstrap, AbstractWeldSEDeployment.RESOURCES).scan();
initialize();
for (BeanArchiveBuilder builder : builders) {
BeansXml beansXml = builder.parseBeansXml();
switch (beansXml.getBeanDiscoveryMode()) {
case ALL:
addToArchives(processAllDiscovery(builder));
break;
case ANNOTATED:
addToArchives(processAnnotatedDiscovery(builder));
break;
case NONE:
addToArchives(processNoneDiscovery(builder));
break;
default:
WeldSELogger.LOG.undefinedBeanDiscoveryValue(beansXml.getBeanDiscoveryMode());
}
}
assignVisibility(deploymentArchives);
return deploymentArchives;
}
private void assignVisibility(Set<WeldSEBeanDeploymentArchive> deploymentArchives) {
for (WeldSEBeanDeploymentArchive archive : deploymentArchives) {
archive.setBeanDeploymentArchives(deploymentArchives);
}
}
public Collection<BeanArchiveBuilder> getBuilders() {
return builders;
}
protected void addToArchives(WeldSEBeanDeploymentArchive bda) {
if (bda != null) {
deploymentArchives.add(bda);
}
}
/**
* Initialize the strategy before accessing found BeanArchiveBuilder builders. Best used for saving some information before the process method for each
* builder is called.
*/
protected void initialize() {
// method for overriding
}
/**
* Processes archive with none-bean-discovery mode and returns the builded BeanDeploymentArchive. Should be overridden by the subclasses.
*/
protected WeldSEBeanDeploymentArchive processNoneDiscovery(BeanArchiveBuilder builder) {
return null;
}
/**
* Processes archive with annotated-bean-discovery mode and returns the builded BeanDeploymentArchive. Should be overridden by the subclasses.
*/
protected WeldSEBeanDeploymentArchive processAnnotatedDiscovery(BeanArchiveBuilder builder) {
return null;
}
/**
* Processes archive with all-bean-discovery mode and returns the builded BeanDeploymentArchive.
*/
protected WeldSEBeanDeploymentArchive processAllDiscovery(BeanArchiveBuilder builder) {
WeldSEBeanDeploymentArchive bda = builder.build();
return bda;
}
public ResourceLoader getResourceLoader() {
return resourceLoader;
}
}