X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fadapter%2FNodeRequest2.java;fp=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fadapter%2FNodeRequest2.java;h=61e8668da23fc150e62e981eabb42669a33c76bd;hb=26b755c7e98b7bb3d9038abba139bef0e71f6607;hp=0000000000000000000000000000000000000000;hpb=501ad95ad5ca980ef4c6e65af1451a0d7b63cddc;p=simantics%2Fplatform.git diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/NodeRequest2.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/NodeRequest2.java new file mode 100644 index 000000000..61e8668da --- /dev/null +++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/NodeRequest2.java @@ -0,0 +1,129 @@ +/******************************************************************************* + * 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 java.util.List; + +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.diagram.handler.SubstituteElementClass; +import org.simantics.g2d.element.ElementClass; +import org.simantics.g2d.element.IElement; +import org.simantics.scl.runtime.tuple.Tuple3; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * @author Antti Villberg + */ +public class NodeRequest2 extends BaseRequest2 { + + private static final Logger LOGGER = LoggerFactory.getLogger(NodeRequest2.class); + + final IDiagram diagram; + + public NodeRequest2(ICanvasContext canvas, IDiagram diagram, Resource resource) { + super(canvas, resource); + this.diagram = diagram; + } + + @Override + public void perform(AsyncReadGraph graph, final AsyncProcedure 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; + } + + final ErrorHandler eh = ElementFactoryUtil.getErrorHandler(diagram); + + graph.forHasStatement(data, new AsyncProcedure() { + + @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(data, ElementFactory.class), new TransientCacheAsyncListener() { + + @Override + public void exception(AsyncReadGraph graph, Throwable throwable) { + eh.error("NodeRequest.asyncRequest(Adapter) failed", throwable); + procedure.execute(graph, null); + } + + @Override + public void execute(AsyncReadGraph graph, final ElementFactory factory) { + + graph.asyncRequest(new GetElementClassRequest(factory, data, canvas, diagram), new TransientCacheAsyncListener() { + + @Override + public void exception(AsyncReadGraph graph, Throwable throwable) { + LOGGER.error("Unexpected error in GetElementClassRequest", throwable); + procedure.execute(graph, null); + } + + @Override + public void execute(AsyncReadGraph graph, ElementClass mutableClazz) { + List substitutes = diagram.getDiagramClass().getItemsByClass(SubstituteElementClass.class); + for (SubstituteElementClass subs : substitutes) { + mutableClazz = subs.substitute(diagram, mutableClazz); + } + final ElementClass clazz = mutableClazz; + graph.asyncRequest(new SpawnRequest(canvas, clazz, data), new TransientCacheAsyncListener() { + + @Override + public void exception(AsyncReadGraph graph, Throwable throwable) { + LOGGER.error("Unexpected error in SpawnRequest", throwable); + procedure.execute(graph, null); + } + + @Override + public void execute(AsyncReadGraph graph, IElement element) { + procedure.execute(graph, new Tuple3(element, clazz, factory)); + } + + }); + + } + + }); + + } + + }); + + } + + }); + + } + +}