plugins/org.argeo.slc.client.ui/src/main/java/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.RepositoryException;
  27 import javax.jcr.Session;
  28 import javax.jcr.observation.Event;
  29 import javax.jcr.observation.EventListener;
  30 import javax.jcr.observation.ObservationManager;
  31 import javax.jcr.query.Query;
  32
  33 import org.argeo.eclipse.ui.jcr.AsyncUiEventListener;
  34 import org.argeo.jcr.JcrUtils;
  35 import org.argeo.slc.SlcException;
  36 import org.argeo.slc.client.ui.ClientUiPlugin;
  37 import org.argeo.slc.client.ui.SlcImages;
  38 import org.argeo.slc.client.ui.editors.ProcessEditor;
  39 import org.argeo.slc.client.ui.editors.ProcessEditorInput;
  40 import org.argeo.slc.execution.ExecutionProcess;
  41 import org.argeo.slc.jcr.SlcJcrUtils;
  42 import org.argeo.slc.jcr.SlcNames;
  43 import org.argeo.slc.jcr.SlcTypes;
  44 import org.eclipse.jface.viewers.ColumnLabelProvider;
  45 import org.eclipse.jface.viewers.DoubleClickEvent;
  46 import org.eclipse.jface.viewers.IDoubleClickListener;
  47 import org.eclipse.jface.viewers.IStructuredContentProvider;
  48 import org.eclipse.jface.viewers.IStructuredSelection;
  49 import org.eclipse.jface.viewers.ITableLabelProvider;
  50 import org.eclipse.jface.viewers.TableViewer;
  51 import org.eclipse.jface.viewers.Viewer;
  52 import org.eclipse.swt.SWT;
  53 import org.eclipse.swt.graphics.Image;
  54 import org.eclipse.swt.widgets.Composite;
  55 import org.eclipse.swt.widgets.Table;
  56 import org.eclipse.swt.widgets.TableColumn;
  57 import org.eclipse.ui.IWorkbenchPage;
  58 import org.eclipse.ui.PlatformUI;
  59 import org.eclipse.ui.part.ViewPart;
  60
  61 /** Displays processes. */
  62 public class JcrProcessListView extends ViewPart {
  63         public static final String ID = ClientUiPlugin.ID + ".jcrProcessListView";
  64
  65         private TableViewer viewer;
  66
  67         private Session session;
  68
  69         private EventListener processesObserver;
  70
  71         private DateFormat dateFormat = new SimpleDateFormat(
  72                         "EEE, dd MMM yyyy HH:mm:ss");
  73         private Integer queryLimit = 2000;
  74
  75         public void createPartControl(Composite parent) {
  76                 Table table = createTable(parent);
  77                 viewer = new TableViewer(table);
  78                 viewer.setLabelProvider(new LabelProvider());
  79                 viewer.setContentProvider(new ContentProvider());
  80                 viewer.setInput(getViewSite());
  81                 viewer.addDoubleClickListener(new ViewDoubleClickListener());
  82
  83                 processesObserver = new AsyncUiEventListener(viewer.getTable()
  84                                 .getDisplay()) {
  85                         protected void onEventInUiThread(List<Event> events) {
  86                                 // TODO optimize by updating only the changed process
  87                                 viewer.refresh();
  88                         }
  89                 };
  90                 try {
  91                         ObservationManager observationManager = session.getWorkspace()
  92                                         .getObservationManager();
  93                         observationManager.addEventListener(processesObserver,
  94                                         Event.NODE_ADDED | Event.NODE_REMOVED
  95                                                         | Event.PROPERTY_CHANGED,
  96                                         SlcJcrUtils.getSlcProcessesBasePath(session), true, null,
  97                                         null, false);
  98                 } catch (RepositoryException e) {
  99                         throw new SlcException("Cannot register listeners", e);
 100                 }
 101
 102         }
 103
 104         protected Table createTable(Composite parent) {
 105                 int style = SWT.SINGLE | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL
 106                                 | SWT.FULL_SELECTION;
 107                 // does not function with RAP, commented for the time being
 108                 // | SWT.HIDE_SELECTION;
 109
 110                 Table table = new Table(parent, style);
 111
 112                 table.setLinesVisible(true);
 113                 table.setHeaderVisible(true);
 114
 115                 TableColumn column = new TableColumn(table, SWT.LEFT, 0);
 116                 column.setText("Date");
 117                 column.setWidth(200);
 118
 119                 column = new TableColumn(table, SWT.LEFT, 1);
 120                 column.setText("Host");
 121                 column.setWidth(100);
 122
 123                 column = new TableColumn(table, SWT.LEFT, 2);
 124                 column.setText("Id");
 125                 column.setWidth(300);
 126
 127                 column = new TableColumn(table, SWT.LEFT, 3);
 128                 column.setText("Status");
 129                 column.setWidth(100);
 130
 131                 return table;
 132         }
 133
 134         public void setFocus() {
 135                 viewer.getControl().setFocus();
 136         }
 137
 138         @Override
 139         public void dispose() {
 140                 JcrUtils.unregisterQuietly(session.getWorkspace(), processesObserver);
 141                 super.dispose();
 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()
 151                                                 .createQuery(sql, Query.JCR_SQL2);
 152                                 // TODO paging
 153                                 query.setLimit(queryLimit);
 154                                 List<Node> nodes = new ArrayList<Node>();
 155                                 for (NodeIterator nit = query.execute().getNodes(); nit
 156                                                 .hasNext();) {
 157                                         nodes.add(nit.nextNode());
 158                                 }
 159                                 return nodes.toArray();
 160                         } catch (RepositoryException e) {
 161                                 throw new SlcException("Cannot retrieve processes", e);
 162                         }
 163                 }
 164
 165                 public void dispose() {
 166                 }
 167
 168                 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 169                 }
 170
 171         }
 172
 173         class LabelProvider extends ColumnLabelProvider implements
 174                         ITableLabelProvider {
 175
 176                 public Image getColumnImage(Object obj, int columnIndex) {
 177                         if (columnIndex != 0)
 178                                 return null;
 179                         try {
 180                                 Node node = (Node) obj;
 181                                 String status = node.getProperty(SlcNames.SLC_STATUS)
 182                                                 .getString();
 183                                 if (status.equals(ExecutionProcess.NEW)
 184                                                 || status.equals(ExecutionProcess.INITIALIZED)
 185                                                 || status.equals(ExecutionProcess.SCHEDULED))
 186                                         return SlcImages.PROCESS_SCHEDULED;
 187                                 else if (status.equals(ExecutionProcess.ERROR)
 188                                                 || status.equals(ExecutionProcess.UNKOWN))
 189                                         return SlcImages.PROCESS_ERROR;
 190                                 else if (status.equals(ExecutionProcess.COMPLETED))
 191                                         return SlcImages.PROCESS_COMPLETED;
 192                                 else if (status.equals(ExecutionProcess.RUNNING))
 193                                         return SlcImages.PROCESS_RUNNING;
 194                                 else if (status.equals(ExecutionProcess.KILLED))
 195                                         return SlcImages.PROCESS_ERROR;
 196                                 else
 197                                         throw new SlcException("Unkown status " + status);
 198                         } catch (RepositoryException e) {
 199                                 throw new SlcException("Cannot get column text", e);
 200                         }
 201                 }
 202
 203                 public String getColumnText(Object obj, int index) {
 204                         try {
 205                                 Node node = (Node) obj;
 206                                 switch (index) {
 207
 208                                 case 0:
 209                                         return dateFormat.format(node
 210                                                         .getProperty(Property.JCR_LAST_MODIFIED).getDate()
 211                                                         .getTime());
 212                                 case 1:
 213                                         return "local";
 214                                 case 2:
 215                                         return node.getProperty(SlcNames.SLC_UUID).getString();
 216                                 case 3:
 217                                         return node.getProperty(SlcNames.SLC_STATUS).getString();
 218                                 }
 219                                 return getText(obj);
 220                         } catch (RepositoryException e) {
 221                                 throw new SlcException("Cannot get column text", e);
 222                         }
 223                 }
 224
 225         }
 226
 227         class ViewDoubleClickListener implements IDoubleClickListener {
 228                 public void doubleClick(DoubleClickEvent evt) {
 229                         Object obj = ((IStructuredSelection) evt.getSelection())
 230                                         .getFirstElement();
 231                         try {
 232                                 if (obj instanceof Node) {
 233                                         Node node = (Node) obj;
 234                                         if (node.isNodeType(SlcTypes.SLC_PROCESS)) {
 235                                                 IWorkbenchPage activePage = PlatformUI.getWorkbench()
 236                                                                 .getActiveWorkbenchWindow().getActivePage();
 237                                                 activePage.openEditor(
 238                                                                 new ProcessEditorInput(node.getPath()),
 239                                                                 ProcessEditor.ID);
 240                                         }
 241                                 }
 242                         } catch (Exception e) {
 243                                 throw new SlcException("Cannot open " + obj, e);
 244                         }
 245                 }
 246
 247         }
 248
 249         public void setSession(Session session) {
 250                 this.session = session;
 251         }
 252
 253 }