X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.db.common%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fcommon%2Frequest%2FTypedParent.java;fp=bundles%2Forg.simantics.db.common%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fcommon%2Frequest%2FTypedParent.java;h=adab5eaa9510f642e8325b4aba1aada506d1b8e5;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/request/TypedParent.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/TypedParent.java
new file mode 100644
index 000000000..adab5eaa9
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+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/TypedParent.java
@@ -0,0 +1,69 @@
+/*******************************************************************************
+ * 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.db.common.request;
+
+import org.simantics.db.AsyncReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.procedure.AsyncProcedure;
+import org.simantics.layer0.Layer0;
+
+public class TypedParent extends ResourceAsyncRead2<Resource> {
+
+	public TypedParent(Resource resource, Resource type) {
+		super(resource, type);
+	}
+
+	@Override
+	public void perform(AsyncReadGraph graph, final AsyncProcedure<Resource> procedure) {
+
+	    final Layer0 l0 = graph.getService(Layer0.class);
+
+		graph.forIsInstanceOf(resource, resource2, new AsyncProcedure<Boolean>() {
+
+			@Override
+			public void execute(AsyncReadGraph graph, Boolean isInstance) {
+				if(isInstance) {
+					procedure.execute(graph, resource);
+				} else {
+					graph.forPossibleObject(resource, l0.PartOf, new AsyncProcedure<Resource>() {
+
+						@Override
+						public void execute(AsyncReadGraph graph, final Resource parent) {
+
+							if(parent == null) {
+								procedure.exception(graph, new DatabaseException("Typed parent was not found."));
+							} else {
+								graph.asyncRequest(new TypedParent(parent, resource2), procedure);
+							}
+							
+						}
+
+						@Override
+						public void exception(AsyncReadGraph graph, Throwable throwable) {
+							procedure.exception(graph, throwable);
+						}
+						
+					});
+				}
+			}
+
+			@Override
+			public void exception(AsyncReadGraph graph, Throwable throwable) {
+				procedure.exception(graph, throwable);
+			}
+		});
+		
+		
+	}
+
+}