Java tutorial
/******************************************************************************* * Copyright (c) 2010 Red Hat, Inc. * Distributed under license by Red Hat, Inc. All rights reserved. * This program is made available under the terms of the * Eclipse Public License v1.0 which accompanies this distribution, * and is available at http://www.eclipse.org/legal/epl-v10.html * * Contributor: * Red Hat, Inc. - initial API and implementation ******************************************************************************/ package org.hibernate.eclipse.launch; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.security.AccessController; import java.security.PrivilegedAction; import java.util.Iterator; import java.util.Map; import java.util.Set; import java.util.TreeMap; import java.util.TreeSet; import org.dom4j.Document; import org.dom4j.DocumentException; import org.dom4j.DocumentHelper; import org.dom4j.Element; import org.hibernate.eclipse.console.HibernateConsolePlugin; /** * Ant Hibernate Exporters tasks attribute description. * * @author Vitali Yemialyanchyk */ public class ExportersXMLAttributeDescription { /** * path to file to store description */ public static final String ANT_TASKS_DESCRIPTION_PATH = "org/hibernate/eclipse/launch/ant-tasks-description.xml"; //$NON-NLS-1$ public static class AttributeDescription { public String name; public String guiName; public String defaultValue; } private static Map<String, Map<String, AttributeDescription>> mapExporter2AttributeDescr = null; private static Map<String, Set<String>> mapExporter2SetSubTags = null; private static void initExportersDescriptionmap() { if (mapExporter2AttributeDescr != null) { return; } mapExporter2AttributeDescr = new TreeMap<String, Map<String, AttributeDescription>>(); mapExporter2SetSubTags = new TreeMap<String, Set<String>>(); Document doc = getDocument(); if (doc == null) { return; } Element root = doc.getRootElement(); @SuppressWarnings("rawtypes") Iterator itTask = root.elementIterator("task"); //$NON-NLS-1$ while (itTask.hasNext()) { Element elTask = (Element) itTask.next(); Map<String, AttributeDescription> attributes = new TreeMap<String, AttributeDescription>(); @SuppressWarnings("rawtypes") Iterator itAttribute = elTask.elementIterator("attribute"); //$NON-NLS-1$ while (itAttribute.hasNext()) { Element elAttribute = (Element) itAttribute.next(); AttributeDescription ad = new AttributeDescription(); ad.name = elAttribute.attributeValue("name"); //$NON-NLS-1$ ad.guiName = elAttribute.attributeValue("gui-name"); //$NON-NLS-1$ ad.defaultValue = elAttribute.attributeValue("default"); //$NON-NLS-1$ attributes.put(ad.guiName, ad); } Set<String> subtags = new TreeSet<String>(); itAttribute = elTask.elementIterator("subtag"); //$NON-NLS-1$ while (itAttribute.hasNext()) { Element elAttribute = (Element) itAttribute.next(); AttributeDescription ad = new AttributeDescription(); ad.name = elAttribute.attributeValue("name"); //$NON-NLS-1$ ad.guiName = elAttribute.attributeValue("gui-name"); //$NON-NLS-1$ ad.defaultValue = elAttribute.attributeValue("default"); //$NON-NLS-1$ attributes.put(ad.guiName, ad); subtags.add(ad.guiName); } //String taskId = elTask.attributeValue("id"); //$NON-NLS-1$ String taskName = elTask.attributeValue("name"); //$NON-NLS-1$ mapExporter2AttributeDescr.put(taskName, attributes); mapExporter2SetSubTags.put(taskName, subtags); } } /** * get map with core description * * @return */ public static Map<String, Map<String, AttributeDescription>> getExportersDescription() { initExportersDescriptionmap(); Map<String, Map<String, AttributeDescription>> res = new TreeMap<String, Map<String, AttributeDescription>>(); res.putAll(mapExporter2AttributeDescr); return res; } public static Map<String, Set<String>> getExportersSetSubTags() { initExportersDescriptionmap(); Map<String, Set<String>> res = new TreeMap<String, Set<String>>(); res.putAll(mapExporter2SetSubTags); return res; } private static Document getDocument() { InputStream input = getResInputStream(ANT_TASKS_DESCRIPTION_PATH, ExportersXMLAttributeDescription.class); if (input == null) { HibernateConsolePlugin.getDefault() .logErrorMessage("Can't read resource: " + ANT_TASKS_DESCRIPTION_PATH, (Throwable) null); //$NON-NLS-1$ return null; } StringBuffer cbuf = new StringBuffer(); InputStreamReader isReader = null; BufferedReader in = null; try { String ls = System.getProperties().getProperty("line.separator", "\n"); //$NON-NLS-1$//$NON-NLS-2$ isReader = new InputStreamReader(input); in = new BufferedReader(isReader); String str; while ((str = in.readLine()) != null) { cbuf.append(str + ls); } } catch (IOException e) { HibernateConsolePlugin.getDefault().logErrorMessage("IOException: ", e); //$NON-NLS-1$ } finally { if (in != null) { try { in.close(); } catch (IOException e) { // ignore } } if (isReader != null) { try { isReader.close(); } catch (IOException e) { // ignore } } try { input.close(); } catch (IOException e) { // ignore } } Document res = null; try { res = DocumentHelper.parseText(cbuf.toString()); } catch (DocumentException e) { HibernateConsolePlugin.getDefault().logErrorMessage("DocumentException: ", e); //$NON-NLS-1$ } return res; } /** * @param resName fully qualified path of the resource * @param clazz the class where the resource will exist */ @SuppressWarnings({ "rawtypes", "unchecked" }) public static InputStream getResInputStream(final String resName, final Class clazz) { InputStream input = null; if (System.getSecurityManager() == null) { input = getResInputStreamInternal(resName, clazz); } else { input = AccessController.doPrivileged(new PrivilegedAction() { public Object run() { return getResInputStreamInternal(resName, clazz); } }); } return input; } @SuppressWarnings("rawtypes") static InputStream getResInputStreamInternal(final String resName, Class clazz) { ClassLoader loader = clazz.getClassLoader(); final InputStream input = loader == null ? ClassLoader.getSystemResourceAsStream(resName) : loader.getResourceAsStream(resName); return input; } }