org.argeo.slc.client.ui/src/org/argeo/slc/client/ui/views/JcrProcessListView.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.slc.client.ui.views;
  17
  18 import java.text.DateFormat;
  19 import java.text.SimpleDateFormat;
  20 import java.util.ArrayList;
  21 import java.util.List;
  22
  23 import javax.jcr.Node;
  24 import javax.jcr.NodeIterator;
  25 import javax.jcr.Property;
  26 import javax.jcr.Repository;
  27 import javax.jcr.RepositoryException;
  28 import javax.jcr.Session;
  29 import javax.jcr.observation.Event;
  30 import javax.jcr.observation.EventListener;
  31 import javax.jcr.observation.ObservationManager;
  32 import javax.jcr.query.Query;
  33
  34 import org.argeo.api.NodeConstants;
  35 import org.argeo.eclipse.ui.jcr.AsyncUiEventListener;
  36 import org.argeo.jcr.JcrUtils;
  37 import org.argeo.slc.SlcException;
  38 import org.argeo.slc.SlcNames;
  39 import org.argeo.slc.SlcTypes;
  40 import org.argeo.slc.client.ui.ClientUiPlugin;
  41 import org.argeo.slc.client.ui.SlcImages;
  42 import org.argeo.slc.client.ui.editors.ProcessEditor;
  43 import org.argeo.slc.client.ui.editors.ProcessEditorInput;
  44 import org.argeo.slc.execution.ExecutionProcess;
  45 import org.argeo.slc.jcr.SlcJcrUtils;
  46 import org.eclipse.jface.viewers.ColumnLabelProvider;
  47 import org.eclipse.jface.viewers.DoubleClickEvent;
  48 import org.eclipse.jface.viewers.IDoubleClickListener;
  49 import org.eclipse.jface.viewers.IStructuredContentProvider;
  50 import org.eclipse.jface.viewers.IStructuredSelection;
  51 import org.eclipse.jface.viewers.ITableLabelProvider;
  52 import org.eclipse.jface.viewers.TableViewer;
  53 import org.eclipse.jface.viewers.Viewer;
  54 import org.eclipse.rap.rwt.service.ServerPushSession;
  55 import org.eclipse.swt.SWT;
  56 import org.eclipse.swt.graphics.Image;
  57 import org.eclipse.swt.widgets.Composite;
  58 import org.eclipse.swt.widgets.Table;
  59 import org.eclipse.swt.widgets.TableColumn;
  60 import org.eclipse.ui.IWorkbenchPage;
  61 import org.eclipse.ui.PlatformUI;
  62 import org.eclipse.ui.part.ViewPart;
  63
  64 /** Displays processes. */
  65 public class JcrProcessListView extends ViewPart {
  66         public static final String ID = ClientUiPlugin.ID + ".jcrProcessListView";
  67
  68         private TableViewer viewer;
  69         private ServerPushSession pushSession;
  70
  71         private Repository repository;
  72         private Session session;
  73
  74         private EventListener processesObserver;
  75
  76         private DateFormat dateFormat = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss");
  77         private Integer queryLimit = 2000;
  78
  79         public void createPartControl(Composite parent) {
  80                 pushSession = new ServerPushSession();
  81                 pushSession.start();
  82                 try {
  83                         session = repository.login(NodeConstants.HOME);
  84                 } catch (RepositoryException re) {
  85                         throw new SlcException("Unable to log in Repository " + repository, re);
  86                 }
  87                 Table table = createTable(parent);
  88                 viewer = new TableViewer(table);
  89                 viewer.setLabelProvider(new LabelProvider());
  90                 viewer.setContentProvider(new ContentProvider());
  91                 viewer.setInput(getViewSite());
  92                 viewer.addDoubleClickListener(new ViewDoubleClickListener());
  93
  94                 processesObserver = new AsyncUiEventListener(viewer.getTable().getDisplay()) {
  95                         protected void onEventInUiThread(List<Event> events) {
  96                                 // TODO optimize by updating only the changed process
  97                                 viewer.refresh();
  98                         }
  99                 };
 100                 try {
 101                         ObservationManager observationManager = session.getWorkspace().getObservationManager();
 102                         observationManager.addEventListener(processesObserver,
 103                                         Event.NODE_ADDED | Event.NODE_REMOVED | Event.PROPERTY_CHANGED,
 104                                         SlcJcrUtils.getSlcProcessesBasePath(session), true, null, null, false);
 105                 } catch (RepositoryException e) {
 106                         throw new SlcException("Cannot register listeners", e);
 107                 }
 108
 109         }
 110
 111         protected Table createTable(Composite parent) {
 112                 int style = SWT.SINGLE | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION;
 113                 // does not function with RAP, commented for the time being
 114                 // | SWT.HIDE_SELECTION;
 115
 116                 Table table = new Table(parent, style);
 117
 118                 table.setLinesVisible(true);
 119                 table.setHeaderVisible(true);
 120
 121                 TableColumn column = new TableColumn(table, SWT.LEFT, 0);
 122                 column.setText("Date");
 123                 column.setWidth(200);
 124
 125                 column = new TableColumn(table, SWT.LEFT, 1);
 126                 column.setText("Host");
 127                 column.setWidth(100);
 128
 129                 column = new TableColumn(table, SWT.LEFT, 2);
 130                 column.setText("Id");
 131                 column.setWidth(300);
 132
 133                 column = new TableColumn(table, SWT.LEFT, 3);
 134                 column.setText("Status");
 135                 column.setWidth(100);
 136
 137                 return table;
 138         }
 139
 140         public void setFocus() {
 141                 viewer.getControl().setFocus();
 142         }
 143
 144         class ContentProvider implements IStructuredContentProvider {
 145
 146                 public Object[] getElements(Object inputElement) {
 147                         try {
 148                                 // TODO filter, optimize with virtual table, ...
 149                                 String sql = "SELECT * from [slc:process] ORDER BY [jcr:lastModified] DESC";
 150                                 Query query = session.getWorkspace().getQueryManager().createQuery(sql, Query.JCR_SQL2);
 151                                 // TODO paging
 152                                 query.setLimit(queryLimit);
 153                                 List<Node> nodes = new ArrayList<Node>();
 154                                 for (NodeIterator nit = query.execute().getNodes(); nit.hasNext();) {
 155                                         nodes.add(nit.nextNode());
 156                                 }
 157                                 return nodes.toArray();
 158                         } catch (RepositoryException e) {
 159                                 throw new SlcException("Cannot retrieve processes", e);
 160                         }
 161                 }
 162
 163                 public void dispose() {
 164                 }
 165
 166                 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 167                 }
 168
 169         }
 170
 171         class LabelProvider extends ColumnLabelProvider implements ITableLabelProvider {
 172
 173                 public Image getColumnImage(Object obj, int columnIndex) {
 174                         if (columnIndex != 0)
 175                                 return null;
 176                         try {
 177                                 Node node = (Node) obj;
 178                                 String status = node.getProperty(SlcNames.SLC_STATUS).getString();
 179                                 if (status.equals(ExecutionProcess.NEW) || status.equals(ExecutionProcess.INITIALIZED)
 180                                                 || status.equals(ExecutionProcess.SCHEDULED))
 181                                         return SlcImages.PROCESS_SCHEDULED;
 182                                 else if (status.equals(ExecutionProcess.ERROR) || status.equals(ExecutionProcess.UNKOWN))
 183                                         return SlcImages.PROCESS_ERROR;
 184                                 else if (status.equals(ExecutionProcess.COMPLETED))
 185                                         return SlcImages.PROCESS_COMPLETED;
 186                                 else if (status.equals(ExecutionProcess.RUNNING))
 187                                         return SlcImages.PROCESS_RUNNING;
 188                                 else if (status.equals(ExecutionProcess.KILLED))
 189                                         return SlcImages.PROCESS_ERROR;
 190                                 else
 191                                         throw new SlcException("Unkown status " + status);
 192                         } catch (RepositoryException e) {
 193                                 throw new SlcException("Cannot get column text", e);
 194                         }
 195                 }
 196
 197                 public String getColumnText(Object obj, int index) {
 198                         try {
 199                                 Node node = (Node) obj;
 200                                 switch (index) {
 201
 202                                 case 0:
 203                                         return dateFormat.format(node.getProperty(Property.JCR_LAST_MODIFIED).getDate().getTime());
 204                                 case 1:
 205                                         return "local";
 206                                 case 2:
 207                                         return node.getProperty(SlcNames.SLC_UUID).getString();
 208                                 case 3:
 209                                         return node.getProperty(SlcNames.SLC_STATUS).getString();
 210                                 }
 211                                 return getText(obj);
 212                         } catch (RepositoryException e) {
 213                                 throw new SlcException("Cannot get column text", e);
 214                         }
 215                 }
 216
 217         }
 218
 219         class ViewDoubleClickListener implements IDoubleClickListener {
 220                 public void doubleClick(DoubleClickEvent evt) {
 221                         Object obj = ((IStructuredSelection) evt.getSelection()).getFirstElement();
 222                         try {
 223                                 if (obj instanceof Node) {
 224                                         Node node = (Node) obj;
 225                                         if (node.isNodeType(SlcTypes.SLC_PROCESS)) {
 226                                                 IWorkbenchPage activePage = PlatformUI.getWorkbench().getActiveWorkbenchWindow()
 227                                                                 .getActivePage();
 228                                                 activePage.openEditor(new ProcessEditorInput(node.getPath()), ProcessEditor.ID);
 229                                         }
 230                                 }
 231                         } catch (Exception e) {
 232                                 throw new SlcException("Cannot open " + obj, e);
 233                         }
 234                 }
 235
 236         }
 237
 238         public void dispose() {
 239                 JcrUtils.unregisterQuietly(session.getWorkspace(), processesObserver);
 240                 JcrUtils.logoutQuietly(session);
 241                 if (pushSession != null)
 242                         pushSession.stop();
 243                 super.dispose();
 244         }
 245
 246         public void setRepository(Repository repository) {
 247                 this.repository = repository;
 248         }
 249
 250 }