X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;ds=sidebyside;f=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fadapter%2FNodeRequest.java;fp=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fadapter%2FNodeRequest.java;h=465614db57b4237493299fd25ba9fdd9192c4143;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/NodeRequest.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/NodeRequest.java
new file mode 100644
index 000000000..465614db5
--- /dev/null
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/NodeRequest.java
@@ -0,0 +1,171 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.diagram.adapter;
+
+import org.simantics.db.AsyncReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.primitiverequest.Adapter;
+import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;
+import org.simantics.db.procedure.AsyncProcedure;
+import org.simantics.db.procedure.Listener;
+import org.simantics.diagram.synchronization.ErrorHandler;
+import org.simantics.g2d.canvas.ICanvasContext;
+import org.simantics.g2d.diagram.IDiagram;
+import org.simantics.g2d.element.ElementClass;
+import org.simantics.g2d.element.IElement;
+
+/**
+ * @author Antti Villberg
+ */
+public class NodeRequest extends BaseRequest2<Resource, IElement> {
+
+    final IDiagram diagram;
+    final Listener<IElement> loadListener;
+
+    public NodeRequest(ICanvasContext canvas, IDiagram diagram, Resource resource, Listener<IElement> loadListener) {
+        super(canvas, resource);
+        this.diagram = diagram;
+        this.loadListener = loadListener;
+    }
+
+    @Override
+    public void perform(AsyncReadGraph graph, final AsyncProcedure<IElement> procedure) {
+        // Keep this code from crashing the whole DB client by unexpected
+        // throwing of NPE's somewhere in the following code that leads to
+        // procedure not getting called properly.
+        if (diagram == null) {
+            procedure.exception(graph, new NullPointerException("null diagram specified for resource " + data));
+            return;
+        }
+
+//        System.out.println("NodeRequest2 " + data);
+//        graph.asyncRequest(new SafeName(data), new Procedure<String>() {
+//            @Override
+//            public void exception(Throwable t) {
+//            }
+//            @Override
+//            public void execute(String result) {
+//                System.out.println("NodeRequest2 "  + result);
+//            }
+//        });
+
+        final ErrorHandler eh = ElementFactoryUtil.getErrorHandler(diagram);
+
+        graph.forHasStatement(data, new AsyncProcedure<Boolean>() {
+
+            @Override
+            public void exception(AsyncReadGraph graph, Throwable throwable) {
+                eh.error("NodeRequest.forHasStatement failed", throwable);
+                procedure.execute(graph, null);
+            }
+
+            @Override
+            public void execute(AsyncReadGraph graph, Boolean result) {
+
+                if(!result) {
+                    procedure.execute(graph, null);
+                    return;
+                }
+
+                graph.asyncRequest(new Adapter<ElementFactory>(data, ElementFactory.class), new TransientCacheAsyncListener<ElementFactory>() {
+
+                    @Override
+                    public void exception(AsyncReadGraph graph, Throwable throwable) {
+                        eh.error("NodeRequest.asyncRequest(Adapter<ElementFactory>) failed", throwable);
+                        procedure.execute(graph, null);
+                    }
+
+                    @Override
+                    public void execute(AsyncReadGraph graph, final ElementFactory factory) {
+
+//                        graph.asyncRequest(new ResourceToURI(data), new Procedure<String>() {
+//                            @Override
+//                            public void exception(Throwable t) {
+//                            }
+//                            @Override
+//                            public void execute(String result) {
+//                                System.out.println("NodeRequest2 factory for "  + result + " -> " + factory);
+//                            }
+//                        });
+
+                        graph.asyncRequest(new GetElementClassRequest(factory, data, canvas, diagram), new TransientCacheAsyncListener<ElementClass>() {
+
+                            @Override
+                            public void exception(AsyncReadGraph graph, Throwable throwable) {
+                                throwable.printStackTrace();
+                                procedure.execute(graph, null);
+                            }
+
+                            @Override
+                            public void execute(AsyncReadGraph graph, final ElementClass clazz) {
+
+                                graph.asyncRequest(new SpawnRequest(canvas, clazz, data), new TransientCacheAsyncListener<IElement>() {
+
+                                    @Override
+                                    public void exception(AsyncReadGraph graph, Throwable throwable) {
+                                        throwable.printStackTrace();
+                                        procedure.execute(graph, null);
+                                    }
+
+                                    @Override
+                                    public void execute(AsyncReadGraph graph, IElement element) {
+                                        procedure.execute(graph, element);
+
+                                        if (loadListener != null) {
+                                            //System.out.println("LoadRequest[" + (loadCounter++) + "] for " + data + ": " + element);
+                                            graph.asyncRequest(new LoadRequest(canvas, diagram, factory, clazz, data), loadListener);
+                                        } else {
+                                            //System.out.println("Spawn[" + (spawnCounter++) + "] for " + data + ": " + element);
+                                            factory.load(graph, canvas, diagram, data, element, new AsyncProcedure<IElement>() {
+                                                @Override
+                                                public void exception(AsyncReadGraph graph, Throwable throwable) {
+                                                    // TODO: proper logging
+                                                    throwable.printStackTrace();
+                                                }
+                                                @Override
+                                                public void execute(AsyncReadGraph graph, IElement result) {
+                                                    // Loading complete, don't care.
+                                                }
+                                            });
+                                        }
+                                    }
+
+                                });
+
+                            }
+
+                        });
+
+//                        graph.asyncRequest(new SafeName(data), new Procedure<String>() {
+//                            @Override
+//                            public void exception(Throwable t) {
+//                            }
+//                            @Override
+//                            public void execute(String result) {
+//                                System.out.println("NodeRequest2 factory "  + result + " " + factory.getClass().getName());
+//                            }
+//                        });
+
+                    }
+
+                });
+
+            }
+
+        });
+
+    }
+
+    static int loadCounter = 0;
+    static int spawnCounter = 0;
+
+}