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.client.ui.ClientUiPlugin;
  38 import org.argeo.slc.client.ui.SlcImages;
  39 import org.argeo.slc.client.ui.editors.ProcessEditor;
  40 import org.argeo.slc.client.ui.editors.ProcessEditorInput;
  41 import org.argeo.slc.execution.ExecutionProcess;
  42 import org.argeo.slc.jcr.SlcJcrUtils;
  43 import org.argeo.slc.jcr.SlcNames;
  44 import org.argeo.slc.jcr.SlcTypes;
  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 Session session;
  69
  70         private EventListener processesObserver;
  71
  72         private DateFormat dateFormat = new SimpleDateFormat(
  73                         "EEE, dd MMM yyyy HH:mm:ss");
  74         private Integer queryLimit = 2000;
  75
  76         public void createPartControl(Composite parent) {
  77                 Table table = createTable(parent);
  78                 viewer = new TableViewer(table);
  79                 viewer.setLabelProvider(new LabelProvider());
  80                 viewer.setContentProvider(new ContentProvider());
  81                 viewer.setInput(getViewSite());
  82                 viewer.addDoubleClickListener(new ViewDoubleClickListener());
  83
  84                 processesObserver = new AsyncUiEventListener(viewer.getTable()
  85                                 .getDisplay()) {
  86                         protected void onEventInUiThread(List<Event> events) {
  87                                 // TODO optimize by updating only the changed process
  88                                 viewer.refresh();
  89                         }
  90                 };
  91                 try {
  92                         ObservationManager observationManager = session.getWorkspace()
  93                                         .getObservationManager();
  94                         observationManager.addEventListener(processesObserver,
  95                                         Event.NODE_ADDED | Event.NODE_REMOVED
  96                                                         | Event.PROPERTY_CHANGED,
  97                                         SlcJcrUtils.getSlcProcessesBasePath(session), true, null,
  98                                         null, false);
  99                 } catch (RepositoryException e) {
 100                         throw new SlcException("Cannot register listeners", e);
 101                 }
 102
 103         }
 104
 105         protected Table createTable(Composite parent) {
 106                 int style = SWT.SINGLE | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL
 107                                 | SWT.FULL_SELECTION;
 108                 // does not function with RAP, commented for the time being
 109                 // | SWT.HIDE_SELECTION;
 110
 111                 Table table = new Table(parent, style);
 112
 113                 table.setLinesVisible(true);
 114                 table.setHeaderVisible(true);
 115
 116                 TableColumn column = new TableColumn(table, SWT.LEFT, 0);
 117                 column.setText("Date");
 118                 column.setWidth(200);
 119
 120                 column = new TableColumn(table, SWT.LEFT, 1);
 121                 column.setText("Host");
 122                 column.setWidth(100);
 123
 124                 column = new TableColumn(table, SWT.LEFT, 2);
 125                 column.setText("Id");
 126                 column.setWidth(300);
 127
 128                 column = new TableColumn(table, SWT.LEFT, 3);
 129                 column.setText("Status");
 130                 column.setWidth(100);
 131
 132                 return table;
 133         }
 134
 135         public void setFocus() {
 136                 viewer.getControl().setFocus();
 137         }
 138
 139         class ContentProvider implements IStructuredContentProvider {
 140
 141                 public Object[] getElements(Object inputElement) {
 142                         try {
 143                                 // TODO filter, optimize with virtual table, ...
 144                                 String sql = "SELECT * from [slc:process] ORDER BY [jcr:lastModified] DESC";
 145                                 Query query = session.getWorkspace().getQueryManager()
 146                                                 .createQuery(sql, Query.JCR_SQL2);
 147                                 // TODO paging
 148                                 query.setLimit(queryLimit);
 149                                 List<Node> nodes = new ArrayList<Node>();
 150                                 for (NodeIterator nit = query.execute().getNodes(); nit
 151                                                 .hasNext();) {
 152                                         nodes.add(nit.nextNode());
 153                                 }
 154                                 return nodes.toArray();
 155                         } catch (RepositoryException e) {
 156                                 throw new SlcException("Cannot retrieve processes", e);
 157                         }
 158                 }
 159
 160                 public void dispose() {
 161                 }
 162
 163                 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 164                 }
 165
 166         }
 167
 168         class LabelProvider extends ColumnLabelProvider implements
 169                         ITableLabelProvider {
 170
 171                 public Image getColumnImage(Object obj, int columnIndex) {
 172                         if (columnIndex != 0)
 173                                 return null;
 174                         try {
 175                                 Node node = (Node) obj;
 176                                 String status = node.getProperty(SlcNames.SLC_STATUS)
 177                                                 .getString();
 178                                 if (status.equals(ExecutionProcess.NEW)
 179                                                 || status.equals(ExecutionProcess.INITIALIZED)
 180                                                 || status.equals(ExecutionProcess.SCHEDULED))
 181                                         return SlcImages.PROCESS_SCHEDULED;
 182                                 else if (status.equals(ExecutionProcess.ERROR)
 183                                                 || status.equals(ExecutionProcess.UNKOWN))
 184                                         return SlcImages.PROCESS_ERROR;
 185                                 else if (status.equals(ExecutionProcess.COMPLETED))
 186                                         return SlcImages.PROCESS_COMPLETED;
 187                                 else if (status.equals(ExecutionProcess.RUNNING))
 188                                         return SlcImages.PROCESS_RUNNING;
 189                                 else if (status.equals(ExecutionProcess.KILLED))
 190                                         return SlcImages.PROCESS_ERROR;
 191                                 else
 192                                         throw new SlcException("Unkown status " + status);
 193                         } catch (RepositoryException e) {
 194                                 throw new SlcException("Cannot get column text", e);
 195                         }
 196                 }
 197
 198                 public String getColumnText(Object obj, int index) {
 199                         try {
 200                                 Node node = (Node) obj;
 201                                 switch (index) {
 202
 203                                 case 0:
 204                                         return dateFormat.format(node
 205                                                         .getProperty(Property.JCR_LAST_MODIFIED).getDate()
 206                                                         .getTime());
 207                                 case 1:
 208                                         return "local";
 209                                 case 2:
 210                                         return node.getProperty(SlcNames.SLC_UUID).getString();
 211                                 case 3:
 212                                         return node.getProperty(SlcNames.SLC_STATUS).getString();
 213                                 }
 214                                 return getText(obj);
 215                         } catch (RepositoryException e) {
 216                                 throw new SlcException("Cannot get column text", e);
 217                         }
 218                 }
 219
 220         }
 221
 222         class ViewDoubleClickListener implements IDoubleClickListener {
 223                 public void doubleClick(DoubleClickEvent evt) {
 224                         Object obj = ((IStructuredSelection) evt.getSelection())
 225                                         .getFirstElement();
 226                         try {
 227                                 if (obj instanceof Node) {
 228                                         Node node = (Node) obj;
 229                                         if (node.isNodeType(SlcTypes.SLC_PROCESS)) {
 230                                                 IWorkbenchPage activePage = PlatformUI.getWorkbench()
 231                                                                 .getActiveWorkbenchWindow().getActivePage();
 232                                                 activePage.openEditor(
 233                                                                 new ProcessEditorInput(node.getPath()),
 234                                                                 ProcessEditor.ID);
 235                                         }
 236                                 }
 237                         } catch (Exception e) {
 238                                 throw new SlcException("Cannot open " + obj, e);
 239                         }
 240                 }
 241
 242         }
 243
 244         @Deprecated
 245         public void setSession(Session session) {
 246                 this.session = session;
 247         }
 248
 249         public void dispose() {
 250                 JcrUtils.unregisterQuietly(session.getWorkspace(), processesObserver);
 251                 JcrUtils.logoutQuietly(session);
 252                 super.dispose();
 253         }
 254
 255         public void setRepository(Repository repository) {
 256                 try {
 257                         session = repository.login();
 258                 } catch (RepositoryException re) {
 259                         throw new SlcException("Unable to log in Repository " + repository,
 260                                         re);
 261                 }
 262         }
 263
 264 }