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