Java tutorial
/* * This program is free software; you can redistribute it and/or modify it under the * terms of the GNU General Public License, version 2 as published by the Free Software * Foundation. * * You should have received a copy of the GNU General Public License along with this * program; if not, you can obtain a copy at http://www.gnu.org/licenses/gpl-2.0.html * or from the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * 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 General Public License for more details. * * * Copyright 2006 - 2013 Pentaho Corporation. All rights reserved. */ package org.pentaho.platform.repository2.unified.lifecycle; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.pentaho.platform.api.repository2.unified.IBackingRepositoryLifecycleManager; import org.pentaho.platform.api.repository2.unified.RepositoryFile; import org.pentaho.platform.repository2.unified.ServerRepositoryPaths; import org.pentaho.platform.repository2.unified.jcr.IPathConversionHelper; import org.pentaho.platform.repository2.unified.jcr.JcrRepositoryFileUtils; import org.pentaho.platform.repository2.unified.jcr.PentahoJcrConstants; import org.springframework.extensions.jcr.JcrCallback; import org.springframework.extensions.jcr.JcrTemplate; import org.springframework.transaction.TransactionDefinition; import org.springframework.transaction.TransactionStatus; import org.springframework.transaction.support.TransactionCallback; import org.springframework.transaction.support.TransactionCallbackWithoutResult; import org.springframework.transaction.support.TransactionTemplate; import org.springframework.util.Assert; import javax.jcr.RepositoryException; import javax.jcr.Session; import java.io.IOException; import java.io.Serializable; import java.util.HashMap; import java.util.Map; import java.util.Map.Entry; /** * Contains some common functionality. */ public abstract class AbstractBackingRepositoryLifecycleManager implements IBackingRepositoryLifecycleManager { // ~ Static fields/initializers // ====================================================================================== protected static final Log logger = LogFactory.getLog(DefaultBackingRepositoryLifecycleManager.class); // ~ Instance fields // ================================================================================================= protected TransactionTemplate txnTemplate; protected JcrTemplate adminJcrTemplate; protected IPathConversionHelper pathConversionHelper; // ~ Constructors // ==================================================================================================== public AbstractBackingRepositoryLifecycleManager(final TransactionTemplate txnTemplate, final JcrTemplate adminJcrTemplate, final IPathConversionHelper pathConversionHelper) { Assert.notNull(txnTemplate); this.txnTemplate = txnTemplate; this.adminJcrTemplate = adminJcrTemplate; this.pathConversionHelper = pathConversionHelper; initTransactionTemplate(); } protected void initTransactionTemplate() { // a new transaction must be created (in order to run with the correct user privileges) txnTemplate.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRES_NEW); } public void addMetadataToRepository(final String metadataProperty) { txnTemplate.execute(new TransactionCallbackWithoutResult() { public void doInTransactionWithoutResult(final TransactionStatus status) { adminJcrTemplate.execute(new JcrCallback() { @Override public Object doInJcr(Session session) throws IOException, RepositoryException { new PentahoJcrConstants(session); String absPath = ServerRepositoryPaths.getPentahoRootFolderPath(); RepositoryFile rootFolder = JcrRepositoryFileUtils.getFileByAbsolutePath(session, absPath, pathConversionHelper, null, false, null); if (rootFolder != null) { Map<String, Serializable> metadataMap = JcrRepositoryFileUtils.getFileMetadata(session, rootFolder.getId()); if (metadataMap == null) { metadataMap = new HashMap<String, Serializable>(); } metadataMap.put(metadataProperty, Boolean.TRUE); JcrRepositoryFileUtils.setFileMetadata(session, rootFolder.getId(), metadataMap); } else { throw new IllegalStateException("Repository has not been initialized properly"); } session.save(); return null; } }); } }); } public Boolean doesMetadataExists(final String metadataProperty) { try { return (Boolean) txnTemplate.execute(new TransactionCallback() { @Override public Object doInTransaction(TransactionStatus status) { return adminJcrTemplate.execute(new JcrCallback() { @Override public Object doInJcr(Session session) throws IOException, RepositoryException { PentahoJcrConstants pentahoJcrConstants = new PentahoJcrConstants(session); String absPath = ServerRepositoryPaths.getPentahoRootFolderPath(); RepositoryFile rootFolder = JcrRepositoryFileUtils.getFileByAbsolutePath(session, absPath, pathConversionHelper, null, false, null); if (rootFolder != null) { Map<String, Serializable> metadataMap = JcrRepositoryFileUtils .getFileMetadata(session, rootFolder.getId()); for (Entry<String, Serializable> metadataEntry : metadataMap.entrySet()) { if (metadataEntry.getKey().equals(metadataProperty)) { return (Boolean) metadataEntry.getValue(); } } } return false; } }); } }); } catch (Throwable th) { th.printStackTrace(); return false; } } }