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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.common;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.lang.annotation.Annotation;
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import java.lang.reflect.Field;
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import java.lang.reflect.Modifier;
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import java.net.HttpURLConnection;
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import java.net.MalformedURLException;
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import java.net.URI;
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import java.net.URISyntaxException;
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import java.net.URL;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import org.apache.commons.lang.StringUtils;
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import org.apache.log4j.Logger;
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/**
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* Util class for consistent access to and creation of per instance application configuration files.
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*
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* @author a.mueller
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* @author a.kohlbecker
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*/
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public class CdmUtils {
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private static final Logger logger = Logger.getLogger(CdmUtils.class);
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// ============= TODO externalize into CdmFileUtils class ? ========== //
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private static final String USER_HOME = System.getProperty("user.home");
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/**
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* The per user cdm folder name: ".cdmLibrary"
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*/
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private static final String CDM_FOLDER_NAME = ".cdmLibrary";
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/**
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* The per user cdm folder "~/.cdmLibrary"
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*/
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public final static File PER_USER_CDM_FOLDER = new File(USER_HOME + File.separator + CDM_FOLDER_NAME );
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/**
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* suggested sub folder for web app related data and configurations.
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* Each webapp instance should use a dedicated subfolder or file
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* which is named by the data source bean id.
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*/
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public static final String SUBFOLDER_WEBAPP = "remote-webapp";
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static final String MUST_EXIST_FILE = "MUST-EXIST.txt";
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//folder separator
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static String folderSeparator;
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public static File getCdmHomeDir() {
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return new File(PER_USER_CDM_FOLDER + File.separator);
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}
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/**
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* Returns specified the sub folder of {@link #CDM_FOLDER_NAME}.
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* If the sub folder does not exist it will be created.
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*
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* @param subFolderName
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* @return the sub folder or null in case the folder did not exist ant the attempt to create it has failed.
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*
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* @see {@link #SUBFOLDER_WEBAPP}
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*/
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public static File getCdmHomeSubDir(String subFolderName) {
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File parentFolder = getCdmHomeDir();
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return ensureSubfolderExists(parentFolder, subFolderName);
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}
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/**
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* Returns a instance specific folder folder in {@link #CDM_FOLDER_NAME}/<code>subFolderName</code>
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* Non existing folders will be created.
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*
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* @param subFolderName
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* The name of a subfolded. In most cases this will be {@link #SUBFOLDER_WEBAPP}
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* @param instanceName
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* The name of the application instance. The name should be related to the data source id.
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* @return the sub folder or null in case the folder did not exist ant the attempt to create it has failed.
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*
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* @see {@link #SUBFOLDER_WEBAPP}
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*/
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public static File getCdmInstanceSubDir(String subFolderName, String instanceName) {
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File subfolder = ensureSubfolderExists(getCdmHomeDir(), subFolderName);
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return ensureSubfolderExists(subfolder, instanceName);
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}
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/**
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* @param subFolderName
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* @param parentFolder
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* @return
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*/
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private static File ensureSubfolderExists(File parentFolder, String subFolderName) {
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File folder = new File(parentFolder, subFolderName);
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// if the directory does not exist, create it
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if (!folder.exists()) {
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if (!folder.mkdir()) {
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// TODO throw some Exception
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return null;
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}
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}
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return folder;
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}
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// ============= END of CdmFileUtils ========== //
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/**
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* Returns the an InputStream for a read-only source
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* @param resourceFileName the resources path within the classpath(!)
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* @return
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* @throws IOException
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*/
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public static InputStream getReadableResourceStream(String resourceFileName)
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throws IOException{
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InputStream urlStream = CdmUtils.class.getResourceAsStream("/"+ resourceFileName);
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return urlStream;
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}
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/**
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* Returns the an InputStream for a read-only source
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* @param resourceFileName the resources path within the classpath(!)
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* @return
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* @throws IOException
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*/
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public static InputStreamReader getUtf8ResourceReader(String resourceFileName)
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throws IOException{
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InputStream urlStream = CdmUtils.class.getResourceAsStream("/"+ resourceFileName);
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InputStreamReader inputStreamReader = new InputStreamReader(urlStream, "UTF8");
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return inputStreamReader;
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}
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/**
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* @return
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*/
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static public String getFolderSeperator(){
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if (folderSeparator == null){
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URL url = CdmUtils.class.getResource("/"+ MUST_EXIST_FILE);
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if ( url != null && ! urlIsJarOrBundle(url) ){
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folderSeparator = File.separator;
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}else{
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folderSeparator = "/";
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}
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}
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return folderSeparator;
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}
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/**
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* @param url
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* @return
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*/
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static private boolean urlIsJarOrBundle(URL url){
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return url.getProtocol().startsWith("jar") || url.getProtocol().startsWith("bundleresource");
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}
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/**
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* Returns the file name for the file in which 'clazz' is to be found (helps finding according libraries)
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* @param clazz
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* @return
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*/
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static public String findLibrary(Class<?> clazz){
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String result = null;
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if (clazz != null){
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String fullPackageName = clazz.getCanonicalName();
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fullPackageName = fullPackageName.replace(".", "/");
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URL url = CdmUtils.class.getResource("/" + fullPackageName + ".class" );
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if (url != null){
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result = url.getFile();
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}else{
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result = "";
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}
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logger.debug("LibraryURL for " + clazz.getCanonicalName() + " : " + result);
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}
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return result;
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}
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static public String testMe(){
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String message = "This is a test";
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System.out.println(message);
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return message;
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}
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static public String readInputLine(String inputQuestion){
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try {
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System.out.print(inputQuestion);
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BufferedReader in = new BufferedReader( new java.io.InputStreamReader( System.in ));
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String input;
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input = in.readLine();
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return input;
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} catch (IOException e) {
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logger.warn("IOExeption");
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return null;
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}
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}
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/**
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* Returns the trimmed value string if value is not <code>null</code>.
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* Returns the empty string if value is <code>null</code>.
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* @param value
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* @return
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*/
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static public String NzTrim(String value){
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return (value == null ? "" : value);
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}
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/**
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* Returns value if value is not <code>null</code>. Returns empty string if value is <code>null</code>.
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* @param value
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* @return
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*/
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static public String Nz(String value){
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return (value == null ? "" : value);
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}
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/**
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* Returns value if value is not <code>null</code>. Returns defaultValue if value is <code>null</code>.
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* @param value
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* @return
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*/
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static public String Nz(String value, String defaultValue){
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return (value == null ? defaultValue : value);
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}
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/**
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* Returns value if value is not <code>null</code>. Returns 0 if value is <code>null</code>.
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* @param value
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* @return
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*/
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static public Integer Nz(Integer value){
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return (value == null ? 0 : value);
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}
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/**
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* Returns value if value is not <code>null</code>. Returns 0 if value is <code>null</code>.
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* @param value
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* @return
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*/
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static public Long Nz(Long value){
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return (value == null ? 0 : value);
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}
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/**
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* Returns str if str is not the empty String (''). Returns null if str is empty.
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* @param str
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* @return
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*/
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static public String Ne(String str){
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return ("".equals(str)? null : str);
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}
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274
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/**
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* Returns str if str.trim() is not empty. Returns null otherwise.
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* @param str
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* @return
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278
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*/
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static public String Nb(String str){
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return (str == null || str.trim().equals("")? null : str);
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}
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283
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284
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/**
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* Concatenates an array of strings using the defined separator.<BR>
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* <code>Null</code> values are interpreted as empty strings.<BR>
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* If all strings are <code>null</code> then <code>null</code> is returned.
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* @param strings
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289
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* @param seperator
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290
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* @return String
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291
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*/
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292
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static public String concat(CharSequence separator, String... strings){
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String result = "";
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294
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boolean allNull = true;
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295
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for (String string : strings){
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if (string != null){
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297
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if (result.length() > 0 && string.length() > 0){
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result += separator;
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}
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300
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result += string;
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allNull = false;
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}
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303
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}
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304
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//if all strings are null result should be null, not ""
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if (allNull){
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return null;
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307
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}else {
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308
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return result;
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309
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}
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310
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}
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311
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312
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/**
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313
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* Concatenates two strings, using the defined seperator.<BR>
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314
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* <code>Null</code> values are interpreted as empty Strings.<BR>
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315
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* If both strings are <code>null</code> then <code>null</code> is returned.
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316
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* @see #concat(CharSequence, String[])
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317
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* @param seperator
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318
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* @param string1
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319
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* @param string2
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320
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* @return String
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321
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*/
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322
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static public String concat(CharSequence separator, String string1, String string2){
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323
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String[] strings = {string1, string2};
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324
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return concat(separator, strings);
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325
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}
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326
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327
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328
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/**
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329
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* Returns <code>preferred</code> if not blank, else returns <code>alternative</code>.
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330
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* If reverse is <code>true</code> computation is
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331
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* the other way round (<code>alternative</code> if not blank, otherwise <code>preferred</code>).
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332
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* @param preferred first string
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333
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* @param alternative second string
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334
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* @param reverse reverse flag
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335
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* @param nzTrim if <code>true</code> the result is trimmed and <code>null</code> values are replaced by empty string.
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336
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* @return the preferred string
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|
337
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*/
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338
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static public String getPreferredNonEmptyString(String preferred, String alternative, boolean reverse, boolean nzTrim){
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339
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String result;
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340
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if (! reverse){
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341
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result = StringUtils.isBlank(preferred) ? alternative : preferred;
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342
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}else{
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343
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result = StringUtils.isBlank(alternative) ? preferred : alternative;
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|
344
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}
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345
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if (nzTrim){
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346
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result = Nz(result).trim();
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347
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}
|
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348
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return result;
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|
349
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}
|
|
350
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|
|
351
|
|
|
352
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/** Returns a version of the input where all contiguous
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353
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* whitespace characters are replaced with a single
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354
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* space. Line terminators are treated like whitespace.
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355
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*
|
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356
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* @param inputStr
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|
357
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* @return
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|
358
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*/
|
|
359
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public static CharSequence removeDuplicateWhitespace(CharSequence inputStr) {
|
|
360
|
|
|
361
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String patternStr = "\\s+";
|
|
362
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String replaceStr = " ";
|
|
363
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Pattern pattern = Pattern.compile(patternStr);
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|
364
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Matcher matcher = pattern.matcher(inputStr);
|
|
365
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return matcher.replaceAll(replaceStr);
|
|
366
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}
|
|
367
|
|
|
368
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|
|
369
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/** Builds a list of strings by splitting an input string
|
|
370
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* with delimiters whitespace, comma, or semicolon
|
|
371
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* @param value
|
|
372
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* @return
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|
373
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*/
|
|
374
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public static ArrayList<String> buildList(String value) {
|
|
375
|
|
|
376
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ArrayList<String> resultList = new ArrayList<String>();
|
|
377
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for (String tag : value.split("[\\s,;]+")) {
|
|
378
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resultList.add(tag);
|
|
379
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}
|
|
380
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return resultList;
|
|
381
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}
|
|
382
|
|
|
383
|
|
|
384
|
static public boolean urlExists(String strUrl, boolean withWarning){
|
|
385
|
try {
|
|
386
|
HttpURLConnection.setFollowRedirects(false);
|
|
387
|
// note : you may also need
|
|
388
|
// HttpURLConnection.setInstanceFollowRedirects(false)
|
|
389
|
HttpURLConnection con =
|
|
390
|
(HttpURLConnection) new URL(strUrl).openConnection();
|
|
391
|
con.setRequestMethod("HEAD");
|
|
392
|
return (con.getResponseCode() == HttpURLConnection.HTTP_OK);
|
|
393
|
} catch (MalformedURLException e) {
|
|
394
|
if (withWarning) {
|
|
395
|
logger.warn(e);
|
|
396
|
}
|
|
397
|
} catch (IOException e) {
|
|
398
|
//
|
|
399
|
};
|
|
400
|
return false;
|
|
401
|
}
|
|
402
|
|
|
403
|
static public URI string2Uri(String string) {
|
|
404
|
URI uri = null;
|
|
405
|
try {
|
|
406
|
uri = new URI(string);
|
|
407
|
logger.debug("uri: " + uri.toString());
|
|
408
|
} catch (URISyntaxException ex) {
|
|
409
|
logger.error("Problem converting string " + string + " to URI " + uri);
|
|
410
|
return null;
|
|
411
|
}
|
|
412
|
return uri;
|
|
413
|
}
|
|
414
|
|
|
415
|
static public boolean isNumeric(String string){
|
|
416
|
if (string == null){
|
|
417
|
return false;
|
|
418
|
}
|
|
419
|
try {
|
|
420
|
Double.valueOf(string);
|
|
421
|
return true;
|
|
422
|
} catch (NumberFormatException e) {
|
|
423
|
return false;
|
|
424
|
}
|
|
425
|
|
|
426
|
}
|
|
427
|
|
|
428
|
/**
|
|
429
|
* Returns <code>true</code> if the passed string starts with an upper case letter.
|
|
430
|
* <code>false</code> otherwise. The later includes <code>null</code> and empty strings.
|
|
431
|
* @param string
|
|
432
|
* @return
|
|
433
|
*/
|
|
434
|
static public boolean isCapital(String string){
|
|
435
|
if (isBlank(string)){
|
|
436
|
return false;
|
|
437
|
}else{
|
|
438
|
Character firstChar = string.charAt(0);
|
|
439
|
if (firstChar.equals(Character.toUpperCase(firstChar))){
|
|
440
|
return true;
|
|
441
|
}else{
|
|
442
|
return false;
|
|
443
|
}
|
|
444
|
}
|
|
445
|
|
|
446
|
}
|
|
447
|
|
|
448
|
/**
|
|
449
|
* Returns true if string is null, "" or string.trim() is ""
|
|
450
|
* @see isNotEmpty(String string)
|
|
451
|
* @param string
|
|
452
|
* @return
|
|
453
|
*/
|
|
454
|
static public boolean isBlank(String string){
|
|
455
|
if (string == null){
|
|
456
|
return true;
|
|
457
|
}
|
|
458
|
if ("".equals(string.trim())){
|
|
459
|
return true;
|
|
460
|
}
|
|
461
|
return false;
|
|
462
|
}
|
|
463
|
|
|
464
|
/**
|
|
465
|
* Returns <code>false</code> if string is null, "" or string.trim() is ""
|
|
466
|
* @see isNotEmpty(String string)
|
|
467
|
* @param string
|
|
468
|
* @return
|
|
469
|
*/
|
|
470
|
static public boolean isNotBlank(String string){
|
|
471
|
return ! isBlank(string);
|
|
472
|
}
|
|
473
|
|
|
474
|
/**
|
|
475
|
* @see #isBlank(String)
|
|
476
|
* @deprecated use {@link #isBlank(String)} instead
|
|
477
|
* @param string
|
|
478
|
* @return
|
|
479
|
*/
|
|
480
|
@Deprecated
|
|
481
|
static public boolean isEmpty(String string){
|
|
482
|
return isBlank(string);
|
|
483
|
}
|
|
484
|
|
|
485
|
static public boolean areBlank(String ... strings){
|
|
486
|
for (String string : strings){
|
|
487
|
if (! isBlank(string)){
|
|
488
|
return false;
|
|
489
|
}
|
|
490
|
}
|
|
491
|
return true;
|
|
492
|
}
|
|
493
|
|
|
494
|
/**
|
|
495
|
* Tests if two objects are equal or both null. Otherwise returns false
|
|
496
|
* @param obj1
|
|
497
|
* @param obj2
|
|
498
|
* @return
|
|
499
|
*/
|
|
500
|
public static boolean nullSafeEqual(Object obj1, Object obj2) {
|
|
501
|
if (obj1 == null && obj2 == null){
|
|
502
|
return true;
|
|
503
|
}
|
|
504
|
if (obj1 == null && obj2 != null){
|
|
505
|
return false;
|
|
506
|
}
|
|
507
|
return (obj1.equals(obj2));
|
|
508
|
}
|
|
509
|
|
|
510
|
|
|
511
|
/**
|
|
512
|
* Compares 2 strings with defined values for <code>null</code>
|
|
513
|
* @param str1
|
|
514
|
* @param str2
|
|
515
|
* @return
|
|
516
|
*/
|
|
517
|
public static int nullSafeCompareTo(String str1, String str2) {
|
|
518
|
if (str1 == null){
|
|
519
|
return str2 == null ? 0 : -1;
|
|
520
|
}else if (str2 == null){
|
|
521
|
return 1;
|
|
522
|
}else{
|
|
523
|
return (str1.compareTo(str2));
|
|
524
|
}
|
|
525
|
}
|
|
526
|
|
|
527
|
/**
|
|
528
|
* Returns false if string is null, "" or string.trim() is ""
|
|
529
|
* Else true.
|
|
530
|
* @see isBlank(String string)
|
|
531
|
* @see #isNotBlank(String)
|
|
532
|
* @deprecated use {@link #isNotBlank(String)} instead
|
|
533
|
* @param string
|
|
534
|
* @return
|
|
535
|
*/
|
|
536
|
@Deprecated
|
|
537
|
static public boolean isNotEmpty(String string){
|
|
538
|
return isNotBlank(string);
|
|
539
|
}
|
|
540
|
|
|
541
|
|
|
542
|
/**
|
|
543
|
* Computes all fields recursively
|
|
544
|
* @param clazz
|
|
545
|
* @return
|
|
546
|
*/
|
|
547
|
public static Map<String, Field> getAllFields(Class clazz, Class highestClass, boolean includeStatic, boolean includeTransient, boolean makeAccessible, boolean includeHighestClass) {
|
|
548
|
Map<String, Field> result = new HashMap<String, Field>();
|
|
549
|
if ( highestClass.isAssignableFrom(clazz) && (clazz != highestClass || includeHighestClass)){
|
|
550
|
//exclude static
|
|
551
|
for (Field field: clazz.getDeclaredFields()){
|
|
552
|
if (includeStatic || ! Modifier.isStatic(field.getModifiers())){
|
|
553
|
if (includeTransient || ! isTransient(field)){
|
|
554
|
field.setAccessible(makeAccessible);
|
|
555
|
result.put(field.getName(), field);
|
|
556
|
}
|
|
557
|
}
|
|
558
|
}
|
|
559
|
|
|
560
|
//include superclass fields
|
|
561
|
Class superclass = clazz.getSuperclass();
|
|
562
|
if (superclass != null){
|
|
563
|
result.putAll(getAllFields(superclass, highestClass, includeStatic, includeTransient, makeAccessible, includeHighestClass));
|
|
564
|
}
|
|
565
|
}
|
|
566
|
return result;
|
|
567
|
}
|
|
568
|
|
|
569
|
|
|
570
|
/**
|
|
571
|
* Returns true, if field has an annotation of type javax.persistence.Annotation
|
|
572
|
* @param field
|
|
573
|
* @return
|
|
574
|
*/
|
|
575
|
protected static boolean isTransient(Field field) {
|
|
576
|
for (Annotation annotation : field.getAnnotations()){
|
|
577
|
//if (Transient.class.isAssignableFrom(annotation.annotationType())){
|
|
578
|
if (annotation.annotationType().getSimpleName().equals("Transient")){
|
|
579
|
return true;
|
|
580
|
}
|
|
581
|
}
|
|
582
|
return false;
|
|
583
|
}
|
|
584
|
|
|
585
|
/**
|
|
586
|
* Trims the string and if the string ends with a dot removes it.
|
|
587
|
* @param string
|
|
588
|
* @return
|
|
589
|
*/
|
|
590
|
public static String removeTrailingDot(String string){
|
|
591
|
if (string == null){
|
|
592
|
return null;
|
|
593
|
}
|
|
594
|
if (string.trim().endsWith(".")){
|
|
595
|
return string.substring(0, string.length() -1);
|
|
596
|
}
|
|
597
|
return string;
|
|
598
|
}
|
|
599
|
|
|
600
|
/**
|
|
601
|
* Returns surrounding brackets "(",")". Trim the string if necessary.
|
|
602
|
* @param text
|
|
603
|
* @return
|
|
604
|
*/
|
|
605
|
public static String removeBrackets(String text) {
|
|
606
|
if (text == null){
|
|
607
|
return null;
|
|
608
|
}
|
|
609
|
text = text.trim();
|
|
610
|
if (text.matches("^\\(.*\\)$")){
|
|
611
|
text = text.substring(1, text.length() -1);
|
|
612
|
}
|
|
613
|
return text;
|
|
614
|
}
|
|
615
|
|
|
616
|
/**
|
|
617
|
* Compares 2 strings. If they are not empty and equal returns <code>true</code>
|
|
618
|
* otherwise false.
|
|
619
|
*
|
|
620
|
* @param str1
|
|
621
|
* @param str2
|
|
622
|
* @return compare result as boolean
|
|
623
|
*/
|
|
624
|
public static boolean nonEmptyEquals(String str1, String str2) {
|
|
625
|
return (isNotBlank(str1) && str1.equals(str2));
|
|
626
|
}
|
|
627
|
|
|
628
|
/**
|
|
629
|
* Compares if str1 and str2 is equal when ignoring whitespaces.
|
|
630
|
* Returns <code>true</code> if both or <code>null</code> or
|
|
631
|
* whitespace ignore equal.
|
|
632
|
* @param str1
|
|
633
|
* @param str2
|
|
634
|
* @return
|
|
635
|
*/
|
|
636
|
public static boolean equalsIgnoreWS(String str1, String str2) {
|
|
637
|
if (str1 == null){
|
|
638
|
return str2 == null;
|
|
639
|
}else if (str2 == null){
|
|
640
|
return false;
|
|
641
|
}else{
|
|
642
|
return str1.replaceAll("\\s", "").equals(str2.replaceAll("\\s", ""));
|
|
643
|
}
|
|
644
|
}
|
|
645
|
|
|
646
|
}
|