Java tutorial
/** * This file is part of MythTV Android Frontend * * MythTV Android Frontend is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * MythTV Android Frontend 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with MythTV Android Frontend. If not, see <http://www.gnu.org/licenses/>. * * This software can be found at <https://github.com/MythTV-Clients/MythTV-Android-Frontend/> */ /** * */ package org.mythtv.service.dvr.v25; import java.util.ArrayList; import java.util.UUID; import org.joda.time.DateTime; import org.joda.time.DateTimeZone; import org.mythtv.client.ui.preferences.LocationProfile; import org.mythtv.db.AbstractBaseHelper; import org.mythtv.db.dvr.ProgramConstants; import org.mythtv.db.dvr.RecordingConstants; import org.mythtv.db.http.model.EtagInfoDelegate; import org.mythtv.service.util.NetworkHelper; import org.mythtv.services.api.ApiVersion; import org.mythtv.services.api.MythServiceApiRuntimeException; import org.mythtv.services.api.connect.MythAccessFactory; import org.mythtv.services.api.v025.MythServicesTemplate; import org.mythtv.services.api.v025.beans.Program; import org.mythtv.services.api.v025.beans.ProgramList; import org.springframework.http.HttpStatus; import org.springframework.http.ResponseEntity; import android.content.ContentProviderOperation; import android.content.Context; import android.content.OperationApplicationException; import android.os.RemoteException; import android.util.Log; /** * @author Daniel Frey * */ public class UpcomingHelperV25 extends AbstractBaseHelper { private static final String TAG = UpcomingHelperV25.class.getSimpleName(); private static final ApiVersion mApiVersion = ApiVersion.v025; private static MythServicesTemplate mMythServicesTemplate; private static UpcomingHelperV25 singleton; /** * Returns the one and only UpcomingHelperV25. init() must be called before * any * @return */ public static UpcomingHelperV25 getInstance() { if (null == singleton) { synchronized (UpcomingHelperV25.class) { if (null == singleton) { singleton = new UpcomingHelperV25(); } } } return singleton; } /** * Constructor. No one but getInstance() can do this. */ private UpcomingHelperV25() { } public boolean process(final Context context, final LocationProfile locationProfile) { Log.v(TAG, "process : enter"); if (!NetworkHelper.getInstance().isMasterBackendConnected(context, locationProfile)) { Log.w(TAG, "process : Master Backend '" + locationProfile.getHostname() + "' is unreachable"); return false; } mMythServicesTemplate = (MythServicesTemplate) MythAccessFactory.getServiceTemplateApiByVersion(mApiVersion, locationProfile.getUrl()); boolean passed = true; try { downloadUpcoming(context, locationProfile); } catch (Exception e) { Log.e(TAG, "process : error", e); passed = false; } Log.v(TAG, "process : exit"); return passed; } // internal helpers private void downloadUpcoming(final Context context, final LocationProfile locationProfile) throws MythServiceApiRuntimeException, RemoteException, OperationApplicationException { Log.v(TAG, "downloadUpcoming : enter"); EtagInfoDelegate etag = mEtagDaoHelper.findByEndpointAndDataId(context, locationProfile, "GetUpcomingList", ""); Log.d(TAG, "downloadUpcoming : etag=" + etag.getValue()); ResponseEntity<ProgramList> responseEntity = mMythServicesTemplate.dvrOperations().getUpcomingList(null, null, Boolean.FALSE, etag); DateTime date = new DateTime(DateTimeZone.UTC); if (responseEntity.getStatusCode().equals(HttpStatus.OK)) { Log.i(TAG, "downloadUpcoming : GetUpcomingList returned 200 OK"); ProgramList programList = responseEntity.getBody(); if (null != programList.getPrograms()) { load(context, locationProfile, programList.getPrograms()); if (null != etag.getValue()) { Log.i(TAG, "downloadUpcoming : saving etag: " + etag.getValue()); etag.setEndpoint("GetUpcomingList"); etag.setDate(date); etag.setMasterHostname(locationProfile.getHostname()); etag.setLastModified(date); mEtagDaoHelper.save(context, locationProfile, etag); } } } if (responseEntity.getStatusCode().equals(HttpStatus.NOT_MODIFIED)) { Log.i(TAG, "downloadUpcoming : GetUpcomingList returned 304 Not Modified"); if (null != etag.getValue()) { Log.i(TAG, "downloadUpcoming : saving etag: " + etag.getValue()); etag.setLastModified(date); mEtagDaoHelper.save(context, locationProfile, etag); } } Log.v(TAG, "downloadUpcoming : exit"); } private int load(final Context context, final LocationProfile locationProfile, final Program[] programs) throws RemoteException, OperationApplicationException { Log.d(TAG, "load : enter"); if (null == context) throw new RuntimeException("UpcomingHelperV25 is not initialized"); String tag = UUID.randomUUID().toString(); int processed = -1; int count = 0; ArrayList<ContentProviderOperation> ops = new ArrayList<ContentProviderOperation>(); boolean inError; for (Program program : programs) { // Log.d( TAG, "load : count=" + count ); if (null == program.getStartTime() || null == program.getEndTime()) { // Log.w(TAG, "load : null starttime and or endtime" ); inError = true; } else { inError = false; } // load upcoming program ProgramHelperV25.getInstance().processProgram(context, locationProfile, ProgramConstants.CONTENT_URI_UPCOMING, ProgramConstants.TABLE_NAME_UPCOMING, ops, program, tag); count++; // update program guide ProgramHelperV25.getInstance().processProgram(context, locationProfile, ProgramConstants.CONTENT_URI_GUIDE, ProgramConstants.TABLE_NAME_GUIDE, ops, program, tag); count++; if (!inError && null != program.getRecording()) { if (program.getRecording().getRecordId() > 0) { // load upcoming recording RecordingHelperV25.getInstance().processRecording(context, locationProfile, ops, RecordingConstants.ContentDetails.UPCOMING, program, tag); count++; // update program guide recording RecordingHelperV25.getInstance().processRecording(context, locationProfile, ops, RecordingConstants.ContentDetails.GUIDE, program, tag); count++; } } if (count > BATCH_COUNT_LIMIT) { // Log.i( TAG, "load : applying batch for '" + count + "' transactions, processing programs" ); processBatch(context, ops, processed, count); count = 0; } } if (!ops.isEmpty()) { Log.v(TAG, "load : applying final batch for '" + count + "' transactions"); processBatch(context, ops, processed, count); } ProgramHelperV25.getInstance().deletePrograms(context, locationProfile, ProgramConstants.CONTENT_URI_UPCOMING, ProgramConstants.TABLE_NAME_UPCOMING, tag); // RecordingHelperV25.getInstance().deleteRecordings( context, locationProfile, ops, RecordingConstants.ContentDetails.UPCOMING, tag ); if (!ops.isEmpty()) { Log.v(TAG, "load : applying delete batch for transactions"); processBatch(context, ops, processed, count); } // Log.v( TAG, "load : exit" ); return processed; } }