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.guide.v27; import java.util.ArrayList; import java.util.UUID; import org.joda.time.DateTime; import org.joda.time.DateTimeZone; import org.joda.time.Interval; import org.mythtv.client.MainApplication; import org.mythtv.client.ui.preferences.LocationProfile; import org.mythtv.db.AbstractBaseHelper; import org.mythtv.db.dvr.ProgramConstants; import org.mythtv.db.dvr.RecordingConstants.ContentDetails; import org.mythtv.db.http.model.EtagInfoDelegate; import org.mythtv.service.dvr.v27.ProgramHelperV27; import org.mythtv.service.dvr.v27.RecordingHelperV27; import org.mythtv.service.util.DateUtils; 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.v027.MythServicesTemplate; import org.mythtv.services.api.v027.beans.ChannelInfo; import org.mythtv.services.api.v027.beans.Program; import org.mythtv.services.api.v027.beans.ProgramGuide; import org.springframework.http.HttpStatus; import org.springframework.http.ResponseEntity; import android.content.ContentProviderOperation; import android.content.Context; import android.content.OperationApplicationException; import android.content.SharedPreferences; import android.os.RemoteException; import android.preference.PreferenceManager; import android.util.Log; /** * @author Daniel Frey * */ public class ProgramGuideHelperV27 extends AbstractBaseHelper { private static final String TAG = ProgramGuideHelperV27.class.getSimpleName(); private static final ApiVersion mApiVersion = ApiVersion.v027; private static MainApplication mMainApplication; private static MythServicesTemplate mMythServicesTemplate; private static ProgramGuideHelperV27 singleton; /** * Returns the one and only ProgramGuideHelperV27. init() must be called before * any * @return */ public static ProgramGuideHelperV27 getInstance() { if (null == singleton) { synchronized (ProgramGuideHelperV27.class) { if (null == singleton) { singleton = new ProgramGuideHelperV27(); } } } return singleton; } /** * Constructor. No one but getInstance() can do this. */ private ProgramGuideHelperV27() { } 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; } mMainApplication = (MainApplication) context.getApplicationContext(); mMythServicesTemplate = (MythServicesTemplate) MythAccessFactory.getServiceTemplateApiByVersion(mApiVersion, locationProfile.getUrl()); if (null == mMythServicesTemplate) { Log.w(TAG, "process : Master Backend '" + locationProfile.getHostname() + "' is unreachable"); return false; } boolean passed = true; try { downloadProgramGuide(context, locationProfile); } catch (Exception e) { Log.e(TAG, "process : error", e); passed = false; } Log.v(TAG, "process : exit"); return passed; } public static Program findProgram(final Context context, final LocationProfile locationProfile, Integer channelId, DateTime startTime) { Log.v(TAG, "findProgram : enter"); Program program = ProgramHelperV27.getInstance().findProgram(context, locationProfile, ProgramConstants.CONTENT_URI_GUIDE, ProgramConstants.TABLE_NAME_GUIDE, channelId, startTime); Log.v(TAG, "findProgram : enter"); return program; } public static boolean deleteProgram(final Context context, final LocationProfile locationProfile, Integer channelId, DateTime programStartTime, DateTime recordingStartTime, Integer recordId) { Log.v(TAG, "deleteProgram : enter"); boolean removed = ProgramHelperV27.getInstance().deleteProgram(context, locationProfile, ProgramConstants.CONTENT_URI_GUIDE, ProgramConstants.TABLE_NAME_GUIDE, channelId, programStartTime, recordingStartTime, recordId); Log.v(TAG, "deleteProgram : enter"); return removed; } // internal helpers private static void downloadProgramGuide(final Context context, final LocationProfile locationProfile) throws MythServiceApiRuntimeException, RemoteException, OperationApplicationException { Log.v(TAG, "downloadProgramGuide : enter"); ArrayList<ContentProviderOperation> ops = new ArrayList<ContentProviderOperation>(); ProgramHelperV27.getInstance().deletePrograms(context, locationProfile, ops, ProgramConstants.CONTENT_URI_GUIDE, ProgramConstants.TABLE_NAME_GUIDE); RecordingHelperV27.getInstance().deleteRecordings(context, locationProfile, ops, ContentDetails.GUIDE); DateTime startDownloading = new DateTime(); SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context); int downloadDays = Integer.parseInt(sp.getString("preference_program_guide_days", "14")); Log.v(TAG, "downloadProgramGuide : downloadDays=" + downloadDays); DateTime start = new DateTime(DateTimeZone.getDefault()).withTimeAtStartOfDay(); DateTime end = start.plusHours(3); for (int i = 0; i < ((downloadDays * 24) / 3); i++) { Log.i(TAG, "downloadProgramGuide : starting download for [" + (i + 1) + " of " + ((downloadDays * 24) / 3) + "] " + DateUtils.getDateTimeUsingLocaleFormattingPretty(start, mMainApplication.getDateFormat(), mMainApplication.getClockType()) + ", end time=" + DateUtils.getDateTimeUsingLocaleFormattingPretty(end, mMainApplication.getDateFormat(), mMainApplication.getClockType())); EtagInfoDelegate etag = mEtagDaoHelper.findByEndpointAndDataId(context, locationProfile, "GetProgramGuide", String.valueOf(i)); Log.d(TAG, "downloadProgramGuide : etag=" + etag.getValue()); if (null == etag.getDate() || start.isAfter(etag.getDate())) { Log.v(TAG, "downloadProgramGuide : next mythfilldatabase has passed"); ResponseEntity<ProgramGuide> responseEntity = mMythServicesTemplate.guideOperations() .getProgramGuide(start, end, 1, null, false, etag); if (responseEntity.getStatusCode().equals(HttpStatus.OK)) { Log.i(TAG, "downloadProgramGuide : GetProgramGuide returned 200 OK"); ProgramGuide programGuide = responseEntity.getBody(); if (null != programGuide) { if (null != programGuide) { load(context, locationProfile, programGuide); } } if (null != etag.getValue()) { Log.i(TAG, "downloadProgramGuide : saving etag: " + etag.getValue()); etag.setEndpoint("GetProgramGuide"); etag.setDataId(i); etag.setDate(locationProfile.getNextMythFillDatabase()); etag.setMasterHostname(locationProfile.getHostname()); etag.setLastModified(new DateTime(DateTimeZone.UTC)); mEtagDaoHelper.save(context, locationProfile, etag); } } if (responseEntity.getStatusCode().equals(HttpStatus.NOT_MODIFIED)) { Log.i(TAG, "downloadProgramGuide : GetProgramGuide returned 304 Not Modified"); if (null != etag.getValue()) { Log.i(TAG, "downloadProgramGuide : saving etag: " + etag.getValue()); etag.setLastModified(new DateTime(DateTimeZone.UTC)); mEtagDaoHelper.save(context, locationProfile, etag); } } start = end; end = end.plusHours(3); } else { Log.v(TAG, "downloadProgramGuide : next mythfilldatabase has NOT passed!"); } } Log.i(TAG, "downloadProgramGuide : interval=" + new Interval(startDownloading, new DateTime()).toString()); Log.v(TAG, "downloadProgramGuide : exit"); } private static int load(final Context context, final LocationProfile locationProfile, final ProgramGuide programGuide) throws RemoteException, OperationApplicationException { Log.d(TAG, "load : enter"); if (null == context) throw new RuntimeException("ProgramGuideHelperV27 is not initialized"); String tag = UUID.randomUUID().toString(); int processed = -1; int count = 0; ArrayList<ContentProviderOperation> ops = new ArrayList<ContentProviderOperation>(); for (ChannelInfo channel : programGuide.getChannels()) { for (Program program : channel.getPrograms()) { //Log.i( TAG, "load : count=" + count ); program.setChannel(channel); program.setHostName(locationProfile.getHostname()); ProgramHelperV27.getInstance().processProgram(context, locationProfile, ProgramConstants.CONTENT_URI_GUIDE, ProgramConstants.TABLE_NAME_GUIDE, ops, 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.i( TAG, "load : applying final batch for '" + count + "' transactions, processing programs" ); processBatch(context, ops, processed, count); } // Log.v( TAG, "load : exit" ); return processed; } }