eclipse/plugins/org.argeo.slc.client.ui/src/main/java/org/argeo/slc/client/ui/views/JcrProcessListView.java

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