/*
* JBoss, Home of Professional Open Source
* Copyright 2009 Red Hat Inc. and/or its affiliates and other
* contributors as indicated by the @author tags. All rights reserved.
* 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.infinispan.factories;
import org.infinispan.config.ConfigurationException;
import org.infinispan.config.GlobalConfiguration;
import org.infinispan.factories.annotations.Inject;
import org.infinispan.factories.scopes.Scope;
import org.infinispan.factories.scopes.Scopes;
/**
* Factory that creates components used internally within Infinispan, and also wires dependencies into the components.
* <p/>
* The {@link InternalCacheFactory} is a special subclass of this, which bootstraps the construction of other
* components. When this class is loaded, it maintains a static list of known default factories for known components,
* which it then delegates to, when actually performing the construction.
* <p/>
*
* @author Manik Surtani (<a href="mailto:manik@jboss.org">manik@jboss.org</a>)
* @see Inject
* @see ComponentRegistry
* @since 4.0
*/
@Scope(Scopes.GLOBAL)
public abstract class AbstractComponentFactory {
protected GlobalComponentRegistry globalComponentRegistry;
protected GlobalConfiguration globalConfiguration;
/**
* Constructs a new ComponentFactory.
*/
public AbstractComponentFactory() {
}
@Inject
private void injectGlobalDependencies(GlobalConfiguration globalConfiguration, GlobalComponentRegistry globalComponentRegistry) {
this.globalComponentRegistry = globalComponentRegistry;
this.globalConfiguration = globalConfiguration;
}
/**
* Constructs a component.
*
* @param componentType type of component
* @return a component
*/
public abstract <T> T construct(Class<T> componentType);
protected void assertTypeConstructable(Class<?> requestedType, Class<?>... ableToConstruct) {
boolean canConstruct = false;
for (Class<?> c : ableToConstruct) {
canConstruct = canConstruct || requestedType.isAssignableFrom(c);
}
if (!canConstruct) throw new ConfigurationException("Don't know how to construct " + requestedType);
}
}