core/impl/src/main/java/org/apache/myfaces/extensions/cdi/core/impl/provider/DefaultServiceProviderContext.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.myfaces.extensions.cdi.core.impl.provider;

import org.apache.myfaces.extensions.cdi.core.api.tools.InvocationOrderComparator;
import org.apache.myfaces.extensions.cdi.core.api.tools.SystemAwareExpressionInterpreter;
import org.apache.myfaces.extensions.cdi.core.api.util.ClassUtils;
import org.apache.myfaces.extensions.cdi.core.impl.provider.spi.EditableServiceProviderContext;
import org.apache.myfaces.extensions.cdi.core.impl.util.ActivationUtils;
import org.apache.myfaces.extensions.cdi.core.impl.util.CodiUtils;

import java.util.Collections;
import java.util.List;

import javax.enterprise.inject.Typed;

/**
 * Service-provider-context with additional features like support for
 * {@link org.apache.myfaces.extensions.cdi.core.api.InvocationOrder}, dependency injection
 */
@Typed
public class DefaultServiceProviderContext<T>
        implements EditableServiceProviderContext<T>
{
    protected boolean deploymentFinished = false;

    /**
     * {@inheritDoc}
     */
    public ClassLoader getClassLoader()
    {
        return ClassUtils.getClassLoader(null);
    }

    /**
     * {@inheritDoc}
     */
    public T postConstruct(T instance)
    {
        if(this.deploymentFinished)
        {
            //deactivated by default - register the DefaultServiceProvider as cdi extension to activate it
            CodiUtils.injectFields(instance, true);
        }
        return instance;
    }

    /**
     * {@inheritDoc}
     */
    public boolean filterService(Class<T> serviceClass)
    {
        return !ActivationUtils.isActivated(serviceClass, SystemAwareExpressionInterpreter.class);
    }

    /**
     * {@inheritDoc}
     */
    //TODO remove all usages of InvocationOrderComparator which aren't needed any more
    public void preInstallServices(List<Class<?>> foundServiceClasses)
    {
        if(foundServiceClasses != null && !foundServiceClasses.isEmpty())
        {
            Collections.sort(foundServiceClasses, new InvocationOrderComparator<Object>());
        }
    }

    protected void setDeploymentFinished(boolean deploymentFinished)
    {
        this.deploymentFinished = deploymentFinished;
    }
}