X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.browsing.ui.graph.impl%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fgraph%2Fimpl%2Frequest%2FGetLabel.java;fp=bundles%2Forg.simantics.browsing.ui.graph.impl%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fgraph%2Fimpl%2Frequest%2FGetLabel.java;h=7cdb6016483792967131a546f9571d05c461fa55;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08

diff --git a/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/request/GetLabel.java b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/request/GetLabel.java
new file mode 100644
index 000000000..7cdb60164
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+++ b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/request/GetLabel.java
@@ -0,0 +1,45 @@
+/*******************************************************************************
+ * 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.browsing.ui.graph.impl.request;
+
+import org.simantics.databoard.Bindings;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.request.ResourceRead;
+import org.simantics.db.common.utils.NameUtils;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.exception.ValidationException;
+import org.simantics.layer0.Layer0;
+
+/**
+ * @author Tuukka Lehtonen
+ */
+public class GetLabel extends ResourceRead<String> {
+
+    public GetLabel(Resource r) {
+        super(r);
+    }
+
+    @Override
+    public String perform(ReadGraph graph) throws DatabaseException {
+        Layer0 l0 = Layer0.getInstance(graph);
+        String label = graph.getPossibleRelatedValue(resource, l0.HasLabel, Bindings.STRING);
+        if (label == null)
+            label = graph.getPossibleRelatedValue(resource, l0.HasName, Bindings.STRING);
+        if (label == null) {
+            String rep = NameUtils.getSafeName(graph, resource);
+            throw new ValidationException("Resource '" + rep + "' does not have a Label or a Name property.");
+        }
+        return label;
+    }
+
+}