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