org.apache.olingo.ext.proxy.commons.StructuredComposableInvokerInvocationHandler.java Source code

Introduction

Here is the source code for org.apache.olingo.ext.proxy.commons.StructuredComposableInvokerInvocationHandler.java

Source

/*
 * 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.olingo.ext.proxy.commons;

import java.lang.reflect.Method;
import java.lang.reflect.Type;
import java.net.URI;
import java.util.Map;

import org.apache.commons.lang3.ArrayUtils;
import org.apache.olingo.client.api.domain.ClientValue;
import org.apache.olingo.commons.api.edm.EdmOperation;
import org.apache.olingo.commons.core.edm.EdmTypeInfo;
import org.apache.olingo.ext.proxy.AbstractService;
import org.apache.olingo.ext.proxy.api.Operations;
import org.apache.olingo.ext.proxy.api.annotations.Operation;

public class StructuredComposableInvokerInvocationHandler<T, O extends Operations>
        extends InvokerInvocationHandler<T, O> {

    private AbstractStructuredInvocationHandler structuredHandler;

    public StructuredComposableInvokerInvocationHandler(final URI uri, final Map<String, ClientValue> parameters,
            final Operation operation, final EdmOperation edmOperation, final Type[] references,
            final EdmTypeInfo returnType, final AbstractService<?> service) {

        super(uri, parameters, operation, edmOperation, references, service);

        if (!edmOperation.getReturnType().isCollection()) {
            if (returnType.isEntityType()) {
                this.structuredHandler = EntityInvocationHandler.getInstance(uri, targetRef, service);
            }
            if (returnType.isComplexType()) {
                this.structuredHandler = ComplexInvocationHandler.getInstance(targetRef, service,
                        service.getClient().newURIBuilder(uri.toASCIIString()));
            }
        }
    }

    @Override
    public Object invoke(final Object proxy, final Method method, final Object[] args) throws Throwable {
        if (method.getName().startsWith("get")) {
            return structuredHandler.invoke(proxy, method, args);
        } else if (method.getName().startsWith("set")) {
            return structuredHandler.invoke(proxy, method, args);
        } else if ("filter".equals(method.getName()) || "orderBy".equals(method.getName())
                || "top".equals(method.getName()) || "skip".equals(method.getName())
                || "expand".equals(method.getName()) || "select".equals(method.getName())) {

            return super.invoke(proxy, method, args);
        } else if ("operations".equals(method.getName()) && ArrayUtils.isEmpty(args)) {
            return super.invoke(proxy, method, args);
        } else if (isSelfMethod(method)) {
            return invokeSelfMethod(method, args);
        } else {
            throw new NoSuchMethodException(method.getName());
        }
    }

}