com.oneteam.framework.android.net.AbstractHttpConnection.java Source code

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Here is the source code for com.oneteam.framework.android.net.AbstractHttpConnection.java

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/*
 * Copyright (C) 2013 OneTeam (IslamSamak : islamsamak01@gmail.com)
 *
 * 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 com.oneteam.framework.android.net;

import java.io.IOException;
import java.io.InputStream;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.impl.client.DefaultHttpClient;

import com.oneteam.framework.android.utils.Logger;

/**
 * @author islam
 * 
 */
public abstract class AbstractHttpConnection implements Connection {

    protected String mUrl;

    protected StatusLine mStatusLine;

    protected HttpResponse mHttpResponse;

    /**
     * Establish a HTTP connection to the given url with the specified params
     * 
     * @param url
     *            the connection url
     */
    public AbstractHttpConnection(String url) {

        mUrl = url;
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.oneteam.framework.android.net.Connection#hasResponse()
     */
    @Override
    public boolean hasResponse() {

        if (!hasConnection()) {
            return false;
        }

        StatusLine statusLine = mHttpResponse.getStatusLine();

        if (statusLine == null || HttpStatus.SC_OK != statusLine.getStatusCode()) {

            Logger.d("Invalid response for this url ' " + mUrl + " '");

            return false;
        }

        return true;
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.oneteam.framework.android.net.Connection#getStatus()
     */
    @Override
    public StatusLine getStatus() {

        if (!hasConnection()) {
            return null;
        }

        StatusLine statusLine = mHttpResponse.getStatusLine();

        return statusLine;
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.oneteam.framework.android.net.Connection#getContent()
     */
    @Override
    public InputStream getContent() {

        if (!hasConnection()) {
            return null;
        }

        HttpEntity httpEntity = mHttpResponse.getEntity();

        try {

            InputStream in = httpEntity.getContent();

            return in;

        } catch (IllegalStateException e) {

            Logger.w("No stream content as it has already been obtained, Error > " + e.getMessage());

            e.printStackTrace();

            return null;
        } catch (IOException e) {

            Logger.w("No stream content as stream could not be created, Error > " + e.getMessage());

            e.printStackTrace();

            return null;
        }
    }

    protected boolean hasConnection() {

        if (mHttpResponse == null) {
            Logger.w("No connection is established for this url ' " + mUrl + " '");

            return false;
        }

        return true;
    }

    protected void connect(HttpRequestBase httpMethod) {

        DefaultHttpClient httpClient = new DefaultHttpClient();

        try {

            mHttpResponse = httpClient.execute(httpMethod);

        } catch (IllegalStateException e) {

            Logger.w("Invalid url, Error > " + e.getMessage());

            e.printStackTrace();

        } catch (ClientProtocolException e) {

            Logger.w("HTTP Protocol Error > " + e.getMessage());

            e.printStackTrace();

        } catch (IOException e) {

            Logger.w("IO Error > " + e.getMessage());

            e.printStackTrace();
        }
    }

}