com.msopentech.odatajclient.proxy.api.impl.EntityCollectionInvocationHandler.java Source code

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Here is the source code for com.msopentech.odatajclient.proxy.api.impl.EntityCollectionInvocationHandler.java

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/**
 * 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 com.msopentech.odatajclient.proxy.api.impl;

import com.msopentech.odatajclient.proxy.api.AbstractEntityCollection;
import com.msopentech.odatajclient.proxy.api.annotations.Operation;
import com.msopentech.odatajclient.proxy.utils.ClassUtils;
import java.io.Serializable;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.net.URI;
import java.util.Collection;
import java.util.Iterator;
import org.apache.commons.lang3.ArrayUtils;

public class EntityCollectionInvocationHandler<T extends Serializable> extends AbstractInvocationHandler
        implements AbstractEntityCollection<T> {

    private static final long serialVersionUID = 98078202642671726L;

    private final Collection<T> items;

    private final Class<?> itemRef;

    private final String entityContainerName;

    private final URI uri;

    public EntityCollectionInvocationHandler(final EntityContainerInvocationHandler containerHandler,
            final Collection<T> items, final Class<?> itemRef, final String entityContainerName) {

        this(containerHandler, items, itemRef, entityContainerName, null);
    }

    public EntityCollectionInvocationHandler(final EntityContainerInvocationHandler containerHandler,
            final Collection<T> items, final Class<?> itemRef, final String entityContainerName, final URI uri) {

        super(containerHandler.getClient(), containerHandler);

        this.items = items;
        this.itemRef = itemRef;
        this.entityContainerName = entityContainerName;
        this.uri = uri;
    }

    @Override
    public Object invoke(final Object proxy, final Method method, final Object[] args) throws Throwable {
        final Annotation[] methodAnnots = method.getAnnotations();

        if (isSelfMethod(method, args)) {
            return invokeSelfMethod(method, args);
        } else if (!ArrayUtils.isEmpty(methodAnnots) && methodAnnots[0] instanceof Operation) {
            if (this.uri == null) {
                throw new IllegalStateException("This entity collection has not yet been flushed");
            }

            final com.msopentech.odatajclient.engine.metadata.edm.v3.EntityContainer container = containerHandler
                    .getFactory().getMetadata().getSchema(ClassUtils.getNamespace(itemRef))
                    .getEntityContainer(entityContainerName);
            final com.msopentech.odatajclient.engine.metadata.edm.v3.FunctionImport funcImp = container
                    .getFunctionImport(((Operation) methodAnnots[0]).name());

            return functionImport((Operation) methodAnnots[0], method, args,
                    client.getURIBuilder(this.uri.toASCIIString())
                            .appendFunctionImportSegment(((Operation) methodAnnots[0]).name()).build(),
                    funcImp);
        } else {
            throw new UnsupportedOperationException("Method not found: " + method);
        }
    }

    @Override
    public int size() {
        return items.size();
    }

    @Override
    public boolean isEmpty() {
        return items.isEmpty();
    }

    @Override
    public boolean contains(final Object object) {
        return items.contains(object);
    }

    @Override
    public Iterator<T> iterator() {
        return items.iterator();
    }

    @Override
    public Object[] toArray() {
        return items.toArray();
    }

    @Override
    public <T> T[] toArray(final T[] array) {
        return items.toArray(array);
    }

    @Override
    public boolean add(final T element) {
        return items.add(element);
    }

    @Override
    public boolean remove(final Object object) {
        return items.remove(object);
    }

    @Override
    public boolean containsAll(final Collection<?> collection) {
        return items.containsAll(collection);
    }

    @Override
    public boolean addAll(final Collection<? extends T> collection) {
        return items.addAll(collection);
    }

    @Override
    public boolean removeAll(final Collection<?> collection) {
        return items.removeAll(collection);
    }

    @Override
    public boolean retainAll(final Collection<?> collection) {
        return items.retainAll(collection);
    }

    @Override
    public void clear() {
        items.clear();
    }
}