Java tutorial
/* * The Kuali Financial System, a comprehensive financial management system for higher education. * * Copyright 2005-2014 The Kuali Foundation * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.kuali.kfs.gl.service.impl; import java.io.BufferedReader; import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.FilenameFilter; import java.io.IOException; import java.io.PrintStream; import java.util.Arrays; import java.util.List; import org.apache.commons.lang.StringUtils; import org.kuali.kfs.gl.GeneralLedgerConstants; import org.kuali.kfs.gl.service.OriginEntryGroupService; import org.kuali.rice.core.api.datetime.DateTimeService; import org.kuali.rice.krad.service.KualiModuleService; import org.springframework.transaction.annotation.Transactional; /** * @see org.kuali.kfs.gl.service.OriginEntryGroupService */ @Transactional public class OriginEntryGroupServiceImpl implements OriginEntryGroupService { private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger .getLogger(OriginEntryGroupServiceImpl.class); protected DateTimeService dateTimeService; protected String batchFileDirectoryName; protected KualiModuleService kualiModuleService; protected String nightlyOutFileName; protected String backupFileName; /** * @see org.kuali.kfs.gl.service.OriginEntryGroupService#getNewestScrubberErrorFileName() */ public String getNewestScrubberErrorFileName() { File newestFile = null; File[] files = null; // can add filter here: listFiles(filter); -- check out originEntryTestBase from Jeff if (new File(batchFileDirectoryName) == null) { return null; } files = new File(batchFileDirectoryName).listFiles(new ScrubberErrorFilenameFilter()); List<File> fileList = Arrays.asList(files); if (fileList.size() > 0) { for (File eachFile : fileList) { if (newestFile == null) { newestFile = eachFile; } else { if (newestFile.lastModified() < eachFile.lastModified()) { newestFile = eachFile; } } } } else { return null; } return newestFile.getName(); } /** * Retrieves all groups to be created today, and creates backup group versions of them * * @see org.kuali.kfs.gl.service.OriginEntryGroupService#createBackupGroup() */ public void createBackupGroup() { LOG.debug("createBackupGroup() started"); // check file from nightly out File nightlyOutFile = new File(batchFileDirectoryName + File.separator + nightlyOutFileName); if (!nightlyOutFile.exists()) { LOG.warn("nightlyOutFile doesn't exist :" + nightlyOutFileName); } String backupFile = batchFileDirectoryName + File.separator + backupFileName + GeneralLedgerConstants.BatchFileSystem.EXTENSION; PrintStream backupPs = null; try { backupPs = new PrintStream(backupFile); } catch (FileNotFoundException e) { throw new RuntimeException("backupFile doesn't exist " + backupFile); } // get all done files from originEntry Directory File[] doneFileList = new File(batchFileDirectoryName).listFiles(new DoneFileFilter()); // build output file with doneFileList and print stream buildBackupFileOutput(doneFileList, backupPs); backupPs.close(); } /* * buildBackupFileOuput with doneFileList and PrintStream */ protected void buildBackupFileOutput(File[] doneFileList, PrintStream ps) { BufferedReader inputFileReader = null; for (File doneFile : doneFileList) { // get data file with done file File dataFile = getDataFile(doneFile); if (dataFile != null) { try { inputFileReader = new BufferedReader(new FileReader(dataFile.getPath())); String line = null; while ((line = inputFileReader.readLine()) != null) { try { ps.printf("%s\n", line); } catch (Exception e) { throw new IOException(e.toString()); } } inputFileReader.close(); inputFileReader = null; } catch (Exception e) { throw new RuntimeException(e.toString()); } doneFile.delete(); postProcessDataFile(dataFile); } } } protected void postProcessDataFile(File dataFile) { // do nothing. A hook for institution extension. } /** * @see org.kuali.kfs.gl.service.OriginEntryGroupService#createGroup(java.lang.String) */ public File createGroup(String fileName) { return new File(batchFileDirectoryName + File.separator + fileName); } /** * @see org.kuali.kfs.gl.service.OriginEntryGroupService#getGroupExists(java.lang.String) */ public boolean getGroupExists(String groupId) { File file = new File(batchFileDirectoryName + File.separator + groupId); if (file == null) { return false; } else { return true; } } /** * @see org.kuali.kfs.gl.service.OriginEntryGroupService#getAllFileInBatchDirectory() */ public File[] getAllFileInBatchDirectory() { File[] returnFiles = null; if (new File(batchFileDirectoryName) != null) { returnFiles = new File(batchFileDirectoryName).listFiles(new DateAndDoneFileFilter()); } return returnFiles; } /** * @see org.kuali.kfs.gl.service.OriginEntryGroupService#deleteFile(java.lang.String) */ public void deleteFile(String fileNameWithPath) { File file = new File(fileNameWithPath); if (file.exists()) { file.delete(); } } /** * @see org.kuali.kfs.gl.service.OriginEntryGroupService#getLaborFileWithFileName(java.lang.String) */ public File getFileWithFileName(String fileName) { return new File(batchFileDirectoryName + File.separator + fileName); } protected class ScrubberErrorFilenameFilter implements FilenameFilter { /** * @see java.io.FilenameFilter#accept(java.io.File, java.lang.String) */ public boolean accept(File dir, String name) { return name.contains(GeneralLedgerConstants.BatchFileSystem.SCRUBBER_ERROR_PREFIX); } } protected class DateAndDoneFileFilter implements FilenameFilter { /** * @see java.io.FilenameFilter#accept(java.io.File, java.lang.String) */ public boolean accept(File dir, String name) { return name.contains(GeneralLedgerConstants.BatchFileSystem.DONE_FILE_EXTENSION) || name.contains(GeneralLedgerConstants.BatchFileSystem.EXTENSION); } } protected class DoneFileFilter implements FilenameFilter { /** * @see java.io.FilenameFilter#accept(java.io.File, java.lang.String) */ public boolean accept(File dir, String name) { return name.contains(GeneralLedgerConstants.BatchFileSystem.DONE_FILE_EXTENSION); } } protected File getDataFile(File doneFile) { String doneFileAbsPath = doneFile.getAbsolutePath(); if (!doneFileAbsPath.endsWith(GeneralLedgerConstants.BatchFileSystem.DONE_FILE_EXTENSION)) { throw new IllegalArgumentException( "Done file name must end with " + GeneralLedgerConstants.BatchFileSystem.DONE_FILE_EXTENSION); } String dataFileAbsPath = StringUtils.removeEnd(doneFileAbsPath, GeneralLedgerConstants.BatchFileSystem.DONE_FILE_EXTENSION) + GeneralLedgerConstants.BatchFileSystem.EXTENSION; File dataFile = new File(dataFileAbsPath); if (!dataFile.exists() || !dataFile.canRead()) { LOG.error("Cannot find/read data file " + dataFileAbsPath); return null; } return dataFile; } public void setBatchFileDirectoryName(String batchFileDirectoryName) { this.batchFileDirectoryName = batchFileDirectoryName; } public void setKualiModuleService(KualiModuleService kualiModuleService) { this.kualiModuleService = kualiModuleService; } public void setDateTimeService(DateTimeService dts) { dateTimeService = dts; } public void setNightlyOutFileName(String nightlyOutFileName) { this.nightlyOutFileName = nightlyOutFileName; } public void setBackupFileName(String backupFileName) { this.backupFileName = backupFileName; } protected DateTimeService getDateTimeService() { return dateTimeService; } protected String getBatchFileDirectoryName() { return batchFileDirectoryName; } protected KualiModuleService getKualiModuleService() { return kualiModuleService; } }