com.smartitengineering.util.rest.client.ClientUtil.java Source code

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Here is the source code for com.smartitengineering.util.rest.client.ClientUtil.java

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/*
 * This is a utility project for wide range of applications
 *
 * Copyright (C) 2010  Imran M Yousuf (imyousuf@smartitengineering.com)
 *
 * 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 3 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., 51 Franklin Street, Fifth Floor, Boston, MA  10-1  USA
 */
package com.smartitengineering.util.rest.client;

import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.UniformInterface;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.client.WebResource.Builder;
import java.net.URI;
import javax.ws.rs.core.MultivaluedMap;
import org.apache.commons.lang.StringUtils;

/**
 * A utility method to read entities
 * @author imyousuf
 */
public abstract class ClientUtil {

    public static <T> T getResponseEntity(ClientResponse response, Class<? extends T> clazz) {
        return response.getEntity(clazz);
    }

    public static ClientResponse readClientResponse(URI uri, HttpClient client, String acceptType) {
        return readEntity(uri, client, acceptType, ClientResponse.class);
    }

    public static ResourceLink createResourceLink(String rel, URI uri, String mimeType) {
        DefaultResouceLinkImpl linkImpl = new DefaultResouceLinkImpl();
        linkImpl.setMimeType(mimeType);
        linkImpl.setRel(rel);
        linkImpl.setUri(uri);
        return linkImpl;
    }

    public static <T> T readEntity(final URI uri, HttpClient client, String acceptType, Class<? extends T> clazz) {
        if (uri != null && client != null && clazz != null) {
            try {
                UniformInterface uniformInterface;
                WebResource resource = client.getWebResource(uri);
                uniformInterface = resource;
                if (StringUtils.isNotBlank(acceptType)) {
                    Builder builder = resource.accept(acceptType);
                    uniformInterface = builder;
                }
                T newEntity = uniformInterface.get(clazz);
                return newEntity;
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }
        return null;
    }

    public abstract <T> void parseLinks(T entity, MultivaluedMap<String, ResourceLink> uris) throws Exception;
}