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This jar bundles all the bits of Weld and CDI required for running in a Servlet container.
There is a newer version: 6.0.0.Beta4
/*
 * JBoss, Home of Professional Open Source
 * Copyright 2008, Red Hat, Inc., 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.contexts;

import java.util.Collection;
import java.util.HashSet;
import java.util.Set;

import org.jboss.weld.context.BoundContext;
import org.jboss.weld.context.api.ContextualInstance;
import org.jboss.weld.contexts.beanstore.BeanStore;
import org.jboss.weld.contexts.beanstore.BoundBeanStore;
import org.jboss.weld.contexts.beanstore.LockedBean;
import org.jboss.weld.serialization.spi.BeanIdentifier;

/**
 * Base class for contexts using a thread local to store a bound bean context
 *
 * @author Pete Muir
 */
public abstract class AbstractBoundContext extends AbstractManagedContext implements BoundContext {

    private final ThreadLocal beanStore;

    public AbstractBoundContext(String contextId, boolean multithreaded) {
        super(contextId, multithreaded);
        this.beanStore = new ThreadLocal();
    }

    /**
     * Gets the bean store
     *
     * @returns The bean store
     */
    protected BoundBeanStore getBeanStore() {
        return beanStore.get();
    }

    /**
     * Sets the bean store
     *
     * @param beanStore The bean store
     */
    protected void setBeanStore(BoundBeanStore beanStore) {
        if (beanStore == null) {
            this.beanStore.remove();
        } else {
            this.beanStore.set(beanStore);
        }
    }

    @Override
    public void cleanup() {
        super.cleanup();
        beanStore.remove();
    }

    @Override
    public void activate() {
        super.activate();
        getBeanStore().attach();
    }

    @Override
    public void deactivate() {
        getBeanStore().detach();
        super.deactivate();
    }

    public boolean dissociate(S storage) {
        if (getBeanStore() != null) {
            try {
                setBeanStore(null);
                return true;
            } finally {
                cleanup();
            }
        } else {
            return false;
        }
    }

    @Override
    public Collection> getAllContextualInstances() {
        Set> result = new HashSet<>();
        // for instance lazily initialized conversation scope may be active but have null here
        BeanStore beanStore = getBeanStore();
        if (beanStore != null) {
            getBeanStore().iterator().forEachRemaining((BeanIdentifier beanId) -> {
                result.add(getBeanStore().get(beanId));
            });
        }
        return result;
    }

    @Override
    public void clearAndSet(Collection> setOfInstances) {
        // bound context can be multithreaded, in such case we perform locking
        BoundBeanStore boundBeanStore = getBeanStore();
        boundBeanStore.clear();
        for (ContextualInstance contextualInstance : setOfInstances) {
            BeanIdentifier id = getId(contextualInstance.getContextual());
            LockedBean lock = null;
            try {
                if (isMultithreaded()) {
                    lock = boundBeanStore.lock(id);
                }
                getBeanStore().put(getId(contextualInstance.getContextual()), contextualInstance);
            } finally {
                if (lock != null) {
                lock.unlock();
                }
            }
        }
    }
}