/*
 * ============================================================================
 * GNU Lesser General Public License
 * ============================================================================
 *
 * Beanlet - JSE Application Container.
 * Copyright (C) 2006  Leon van Zantvoort
 *
 * This library 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 library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
 *
 * Leon van Zantvoort
 * 243 Acalanes Drive #11
 * Sunnyvale, CA 94086
 * USA
 *
 * zantvoort@users.sourceforge.net
 * http://beanlet.org
 */
package org.beanlet.impl;

import org.beanlet.common.WiringDependencyInjectionFactory;
import java.util.Collections;
import java.util.Set;
import org.beanlet.BeanletApplicationContext;
import org.beanlet.IgnoreDependency;
import org.jargo.ComponentContext;
import org.beanlet.Inject;
import org.beanlet.WiringMode;
import org.beanlet.annotation.AnnotationDomain;
import org.beanlet.annotation.Element;
import org.beanlet.annotation.ElementAnnotation;
import org.beanlet.plugin.BeanletConfiguration;
import org.beanlet.plugin.Injectant;
import org.beanlet.common.InjectantImpl;

/**
 *
 * @author Leon van Zantvoort
 */
public final class WireByNameDependencyInjectionFactoryImpl extends
        WiringDependencyInjectionFactory {
    
    private final BeanletConfiguration<?> configuration;
    
    public WireByNameDependencyInjectionFactoryImpl(
            BeanletConfiguration<?> configuration) {
        super(configuration);
        this.configuration = configuration;
    }

    public WiringMode getWiringMode() {
        return WiringMode.BY_NAME;
    }
    
    public boolean isSupported(ElementAnnotation<? extends Element, Inject> ea) {
        if (isWiringModeSupported(ea)) {
            String name = getName(ea);
            if (configuration.getComponentName().equals(name)) {
                // Exclude itself.
                return false;
            } else {
                return BeanletApplicationContext.instance().exists(name);
            }
        } else {
            return false;
        }
    }
    
    public Set<String> getDependencies(
            ElementAnnotation<? extends Element, Inject> ea) {
        final Set<String> dependencies;
        AnnotationDomain domain = configuration.getAnnotationDomain();
        if (domain.getDeclaration(IgnoreDependency.class).
                isAnnotationPresent(ea.getElement())) {
            dependencies = Collections.emptySet();
        } else {
            dependencies = Collections.singleton(getName(ea));
        }
        return dependencies;
    }

    public Injectant<?> getInjectant(ElementAnnotation<? extends Element, Inject> ea,
            ComponentContext<?> ctx) {
        return new InjectantImpl<Object>(
                BeanletApplicationContext.instance().
                getBeanlet(getName(ea)), false);
    }
}