Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.services / src / org / simantics / db / services / adaption / reflection / AdaptingDynamicAdapter2.java

diff --git a/bundles/org.simantics.db.services/src/org/simantics/db/services/adaption/reflection/AdaptingDynamicAdapter2.java b/bundles/org.simantics.db.services/src/org/simantics/db/services/adaption/reflection/AdaptingDynamicAdapter2.java
new file mode 100644 (file)
index 0000000..d087fe9
--- /dev/null
+++ b/bundles/org.simantics.db.services/src/org/simantics/db/services/adaption/reflection/AdaptingDynamicAdapter2.java
@@ -0,0 +1,59 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.db.services.adaption.reflection;\r
+\r
+import java.util.ArrayList;\r
+import java.util.Collection;\r
+\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.exception.AdaptionException;\r
+import org.simantics.db.exception.DatabaseException;\r
+\r
+public class AdaptingDynamicAdapter2 implements IDynamicAdapter2 {\r
+\r
+    IDynamicAdapter2 adapter;\r
+    Class<?> targetType;\r
+\r
+    public AdaptingDynamicAdapter2(IDynamicAdapter2 adapter, Class<?> targetType) {\r
+        this.adapter = adapter;\r
+        this.targetType = targetType;\r
+    }\r
+\r
+    @Override\r
+    public Object adapt(ReadGraph g, Resource r) throws DatabaseException {\r
+        Object obj = adapter.adapt(g, r);\r
+        if(obj == null)\r
+            return null;\r
+        if(obj instanceof Resource)\r
+            return g.adapt((Resource)obj, targetType);\r
+        if(obj instanceof Collection<?>) {\r
+            Collection<?> c = (Collection<?>)obj;\r
+            Collection<Object> ret = new ArrayList<Object>(c.size());\r
+            for(Object o : c)\r
+                ret.add(g.adapt((Resource)o, targetType));\r
+            return ret;\r
+        }\r
+        throw new AdaptionException("Invalid type.");\r
+    }\r
+\r
+    @Override\r
+    public Class<?> getType() throws DatabaseException {\r
+        if(adapter.getType().equals(Resource.class))\r
+            return targetType;\r
+        else if(adapter.getType().equals(Collection.class))\r
+            return Collection.class;\r
+        else\r
+            throw new AdaptionException("Invalid type.");\r
+    }\r
+\r
+}\r