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.eclipse.ui.jcr.AsyncUiEventListener;
  35 import org.argeo.jcr.JcrUtils;
  36 import org.argeo.slc.SlcException;
  37 import org.argeo.slc.SlcNames;
  38 import org.argeo.slc.SlcTypes;
  39 import org.argeo.slc.client.ui.ClientUiPlugin;
  40 import org.argeo.slc.client.ui.SlcImages;
  41 import org.argeo.slc.client.ui.editors.ProcessEditor;
  42 import org.argeo.slc.client.ui.editors.ProcessEditorInput;
  43 import org.argeo.slc.execution.ExecutionProcess;
  44 import org.argeo.slc.jcr.SlcJcrUtils;
  45 import org.eclipse.jface.viewers.ColumnLabelProvider;
  46 import org.eclipse.jface.viewers.DoubleClickEvent;
  47 import org.eclipse.jface.viewers.IDoubleClickListener;
  48 import org.eclipse.jface.viewers.IStructuredContentProvider;
  49 import org.eclipse.jface.viewers.IStructuredSelection;
  50 import org.eclipse.jface.viewers.ITableLabelProvider;
  51 import org.eclipse.jface.viewers.TableViewer;
  52 import org.eclipse.jface.viewers.Viewer;
  53 import org.eclipse.swt.SWT;
  54 import org.eclipse.swt.graphics.Image;
  55 import org.eclipse.swt.widgets.Composite;
  56 import org.eclipse.swt.widgets.Table;
  57 import org.eclipse.swt.widgets.TableColumn;
  58 import org.eclipse.ui.IWorkbenchPage;
  59 import org.eclipse.ui.PlatformUI;
  60 import org.eclipse.ui.part.ViewPart;
  61
  62 /** Displays processes. */
  63 public class JcrProcessListView extends ViewPart {
  64         public static final String ID = ClientUiPlugin.ID + ".jcrProcessListView";
  65
  66         private TableViewer viewer;
  67
  68         private Repository repository;
  69         private Session session;
  70
  71         private EventListener processesObserver;
  72
  73         private DateFormat dateFormat = new SimpleDateFormat(
  74                         "EEE, dd MMM yyyy HH:mm:ss");
  75         private Integer queryLimit = 2000;
  76
  77         public void createPartControl(Composite parent) {
  78                 try {
  79                         session = repository.login();
  80                 } catch (RepositoryException re) {
  81                         throw new SlcException("Unable to log in Repository " + repository,
  82                                         re);
  83                 }
  84                 Table table = createTable(parent);
  85                 viewer = new TableViewer(table);
  86                 viewer.setLabelProvider(new LabelProvider());
  87                 viewer.setContentProvider(new ContentProvider());
  88                 viewer.setInput(getViewSite());
  89                 viewer.addDoubleClickListener(new ViewDoubleClickListener());
  90
  91                 processesObserver = new AsyncUiEventListener(viewer.getTable()
  92                                 .getDisplay()) {
  93                         protected void onEventInUiThread(List<Event> events) {
  94                                 // TODO optimize by updating only the changed process
  95                                 viewer.refresh();
  96                         }
  97                 };
  98                 try {
  99                         ObservationManager observationManager = session.getWorkspace()
 100                                         .getObservationManager();
 101                         observationManager.addEventListener(processesObserver,
 102                                         Event.NODE_ADDED | Event.NODE_REMOVED
 103                                                         | Event.PROPERTY_CHANGED,
 104                                         SlcJcrUtils.getSlcProcessesBasePath(session), true, null,
 105                                         null, false);
 106                 } catch (RepositoryException e) {
 107                         throw new SlcException("Cannot register listeners", e);
 108                 }
 109
 110         }
 111
 112         protected Table createTable(Composite parent) {
 113                 int style = SWT.SINGLE | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL
 114                                 | SWT.FULL_SELECTION;
 115                 // does not function with RAP, commented for the time being
 116                 // | SWT.HIDE_SELECTION;
 117
 118                 Table table = new Table(parent, style);
 119
 120                 table.setLinesVisible(true);
 121                 table.setHeaderVisible(true);
 122
 123                 TableColumn column = new TableColumn(table, SWT.LEFT, 0);
 124                 column.setText("Date");
 125                 column.setWidth(200);
 126
 127                 column = new TableColumn(table, SWT.LEFT, 1);
 128                 column.setText("Host");
 129                 column.setWidth(100);
 130
 131                 column = new TableColumn(table, SWT.LEFT, 2);
 132                 column.setText("Id");
 133                 column.setWidth(300);
 134
 135                 column = new TableColumn(table, SWT.LEFT, 3);
 136                 column.setText("Status");
 137                 column.setWidth(100);
 138
 139                 return table;
 140         }
 141
 142         public void setFocus() {
 143                 viewer.getControl().setFocus();
 144         }
 145
 146         class ContentProvider implements IStructuredContentProvider {
 147
 148                 public Object[] getElements(Object inputElement) {
 149                         try {
 150                                 // TODO filter, optimize with virtual table, ...
 151                                 String sql = "SELECT * from [slc:process] ORDER BY [jcr:lastModified] DESC";
 152                                 Query query = session.getWorkspace().getQueryManager()
 153                                                 .createQuery(sql, Query.JCR_SQL2);
 154                                 // TODO paging
 155                                 query.setLimit(queryLimit);
 156                                 List<Node> nodes = new ArrayList<Node>();
 157                                 for (NodeIterator nit = query.execute().getNodes(); nit
 158                                                 .hasNext();) {
 159                                         nodes.add(nit.nextNode());
 160                                 }
 161                                 return nodes.toArray();
 162                         } catch (RepositoryException e) {
 163                                 throw new SlcException("Cannot retrieve processes", e);
 164                         }
 165                 }
 166
 167                 public void dispose() {
 168                 }
 169
 170                 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 171                 }
 172
 173         }
 174
 175         class LabelProvider extends ColumnLabelProvider implements
 176                         ITableLabelProvider {
 177
 178                 public Image getColumnImage(Object obj, int columnIndex) {
 179                         if (columnIndex != 0)
 180                                 return null;
 181                         try {
 182                                 Node node = (Node) obj;
 183                                 String status = node.getProperty(SlcNames.SLC_STATUS)
 184                                                 .getString();
 185                                 if (status.equals(ExecutionProcess.NEW)
 186                                                 || status.equals(ExecutionProcess.INITIALIZED)
 187                                                 || status.equals(ExecutionProcess.SCHEDULED))
 188                                         return SlcImages.PROCESS_SCHEDULED;
 189                                 else if (status.equals(ExecutionProcess.ERROR)
 190                                                 || status.equals(ExecutionProcess.UNKOWN))
 191                                         return SlcImages.PROCESS_ERROR;
 192                                 else if (status.equals(ExecutionProcess.COMPLETED))
 193                                         return SlcImages.PROCESS_COMPLETED;
 194                                 else if (status.equals(ExecutionProcess.RUNNING))
 195                                         return SlcImages.PROCESS_RUNNING;
 196                                 else if (status.equals(ExecutionProcess.KILLED))
 197                                         return SlcImages.PROCESS_ERROR;
 198                                 else
 199                                         throw new SlcException("Unkown status " + status);
 200                         } catch (RepositoryException e) {
 201                                 throw new SlcException("Cannot get column text", e);
 202                         }
 203                 }
 204
 205                 public String getColumnText(Object obj, int index) {
 206                         try {
 207                                 Node node = (Node) obj;
 208                                 switch (index) {
 209
 210                                 case 0:
 211                                         return dateFormat.format(node
 212                                                         .getProperty(Property.JCR_LAST_MODIFIED).getDate()
 213                                                         .getTime());
 214                                 case 1:
 215                                         return "local";
 216                                 case 2:
 217                                         return node.getProperty(SlcNames.SLC_UUID).getString();
 218                                 case 3:
 219                                         return node.getProperty(SlcNames.SLC_STATUS).getString();
 220                                 }
 221                                 return getText(obj);
 222                         } catch (RepositoryException e) {
 223                                 throw new SlcException("Cannot get column text", e);
 224                         }
 225                 }
 226
 227         }
 228
 229         class ViewDoubleClickListener implements IDoubleClickListener {
 230                 public void doubleClick(DoubleClickEvent evt) {
 231                         Object obj = ((IStructuredSelection) evt.getSelection())
 232                                         .getFirstElement();
 233                         try {
 234                                 if (obj instanceof Node) {
 235                                         Node node = (Node) obj;
 236                                         if (node.isNodeType(SlcTypes.SLC_PROCESS)) {
 237                                                 IWorkbenchPage activePage = PlatformUI.getWorkbench()
 238                                                                 .getActiveWorkbenchWindow().getActivePage();
 239                                                 activePage.openEditor(
 240                                                                 new ProcessEditorInput(node.getPath()),
 241                                                                 ProcessEditor.ID);
 242                                         }
 243                                 }
 244                         } catch (Exception e) {
 245                                 throw new SlcException("Cannot open " + obj, e);
 246                         }
 247                 }
 248
 249         }
 250
 251         public void dispose() {
 252                 JcrUtils.unregisterQuietly(session.getWorkspace(), processesObserver);
 253                 JcrUtils.logoutQuietly(session);
 254                 super.dispose();
 255         }
 256
 257         public void setRepository(Repository repository) {
 258                 this.repository = repository;
 259         }
 260
 261 }