Java tutorial
/* * Copyright 2016 TIBCO Software,Inc.All rights reserved. * http://community.jaspersoft.com/project/jaspermobile-android * * Unless you have purchased a commercial license agreement from TIBCO Jaspersoft, * the following license terms apply: * * This program is part of TIBCO Jaspersoft Mobile for Android. * * TIBCO Jaspersoft Mobile 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 3of the License,or * (at your option)any later version. * * TIBCO Jaspersoft Mobile 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 TIBCO Jaspersoft Mobile for Android.If not,see * <http://www.gnu.org/licenses/lgpl>. */ package com.jaspersoft.android.jaspermobile.util; import android.content.Context; import android.database.Cursor; import android.net.Uri; import android.widget.Toast; import com.jaspersoft.android.jaspermobile.R; import com.jaspersoft.android.jaspermobile.db.MobileDbProvider; import com.jaspersoft.android.jaspermobile.db.database.table.SavedItemsTable; import com.jaspersoft.android.jaspermobile.db.model.SavedItems; import com.jaspersoft.android.jaspermobile.db.provider.JasperMobileDbProvider; import org.androidannotations.annotations.EBean; import org.androidannotations.annotations.RootContext; import org.apache.commons.io.FileUtils; import java.io.File; import java.io.FilenameFilter; import java.io.IOException; import timber.log.Timber; /** * @author Tom Koptel * @since 2.0 */ @EBean public class SavedItemHelper { @RootContext protected Context context; public void deleteSavedItem(Uri reportUri) { File reportFile = getFile(reportUri); if (reportFile == null) return; File reportFolderFile = reportFile.getParentFile(); deleteReportFolder(reportFolderFile); if (!reportFolderFile.exists()) { deleteReferenceInDb(reportUri); } } public boolean renameSavedItem(Uri reportUri, String newReportName) { File oldFile = getFile(reportUri); if (oldFile == null) return false; String newFileName = newReportName + "." + getExtension(reportUri); File oldFolder = oldFile.getParentFile(); File newFolder = new File(oldFolder.getParentFile(), newFileName); if (newFolder.exists()) return false; if (!renameReportAndFolder(oldFolder, newFolder)) return false; File newFile = new File(newFolder, newFileName); renameReferenceInDb(reportUri, newReportName, newFile); return true; } public void deleteUnsavedItems() { String selection = SavedItemsTable.DOWNLOADED + " =?"; Cursor cursor = context.getContentResolver().query(MobileDbProvider.SAVED_ITEMS_CONTENT_URI, new String[] { SavedItemsTable._ID, SavedItemsTable.FILE_PATH }, selection, new String[] { "0" }, null); if (cursor == null) return; if (cursor.moveToFirst()) { do { int id = cursor.getInt(cursor.getColumnIndex(SavedItemsTable._ID)); Uri uri = Uri.withAppendedPath(JasperMobileDbProvider.SAVED_ITEMS_CONTENT_URI, String.valueOf(id)); deleteSavedItem(uri); } while (cursor.moveToNext()); } cursor.close(); } public boolean itemExist(String name, String format) { String selection = SavedItemsTable.NAME + " =? AND " + SavedItemsTable.FILE_FORMAT + " =?"; Cursor cursor = context.getContentResolver().query(MobileDbProvider.SAVED_ITEMS_CONTENT_URI, new String[] { SavedItemsTable._ID }, selection, new String[] { name, format }, null); boolean itemExist = cursor != null && cursor.getCount() != 0; if (cursor != null) { cursor.close(); } return itemExist; } private void deleteReportFolder(File reportFolderFile) { if (!reportFolderFile.isDirectory()) return; try { FileUtils.deleteDirectory(reportFolderFile); } catch (IOException e) { Timber.e(e.getMessage(), "Failed to delete folder. Path: " + reportFolderFile.getPath()); Toast.makeText(context, R.string.sdr_t_report_deletion_error, Toast.LENGTH_SHORT).show(); } } private boolean renameReportAndFolder(File srcFile, File destFile) { // rename base file boolean result = srcFile.renameTo(destFile); // rename sub-files if (result && destFile.isDirectory()) { String srcName = srcFile.getName(); String destName = destFile.getName(); FilenameFilter reportNameFilter = new ReportFilenameFilter(srcName); File[] subFiles = destFile.listFiles(reportNameFilter); for (File subFile : subFiles) { File newSubFile = new File(subFile.getParentFile(), destName); result &= subFile.renameTo(newSubFile); } } return result; } private void renameReferenceInDb(Uri reportUri, String newName, File newFile) { SavedItems savedItemsEntry = new SavedItems(); savedItemsEntry.setName(newName); savedItemsEntry.setFilePath(newFile.getPath()); context.getContentResolver().update(reportUri, savedItemsEntry.getContentValues(), null, null); } private void deleteReferenceInDb(Uri reportUri) { context.getContentResolver().delete(reportUri, null, null); } private File getFile(Uri recordUri) { Cursor cursor = context.getContentResolver().query(recordUri, null, null, null, null); if (cursor == null || !cursor.moveToFirst()) return null; File file = new File(cursor.getString(cursor.getColumnIndex(SavedItemsTable.FILE_PATH))); cursor.close(); return file; } private String getExtension(Uri recordUri) { Cursor cursor = context.getContentResolver().query(recordUri, null, null, null, null); if (cursor == null || !cursor.moveToFirst()) return null; String extension = cursor.getString(cursor.getColumnIndex(SavedItemsTable.FILE_FORMAT)); cursor.close(); return extension; } private static class ReportFilenameFilter implements FilenameFilter { private String reportName; private ReportFilenameFilter(String reportName) { this.reportName = reportName; } @Override public boolean accept(File dir, String filename) { return filename.equals(reportName); } } }