Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.ui / src / org / simantics / ui / workbench / ResourceInputs.java

diff --git a/bundles/org.simantics.ui/src/org/simantics/ui/workbench/ResourceInputs.java b/bundles/org.simantics.ui/src/org/simantics/ui/workbench/ResourceInputs.java
new file mode 100644 (file)
index 0000000..01d937e
--- /dev/null
+++ b/bundles/org.simantics.ui/src/org/simantics/ui/workbench/ResourceInputs.java
@@ -0,0 +1,106 @@
+/*******************************************************************************\r
+ * Copyright (c) 2012 Association for Decentralized Information Management in\r
+ * 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.ui.workbench;\r
+\r
+import java.lang.ref.Reference;\r
+import java.lang.ref.SoftReference;\r
+import java.util.ArrayList;\r
+import java.util.Collection;\r
+import java.util.Collections;\r
+import java.util.List;\r
+\r
+import org.simantics.Simantics;\r
+import org.simantics.db.RequestProcessor;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.Session;\r
+import org.simantics.db.common.ResourceArray;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.exception.RuntimeDatabaseException;\r
+import org.simantics.db.service.LifecycleSupport;\r
+import org.simantics.db.service.SerialisationSupport;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+final class ResourceInputs {\r
+\r
+    public static <T> Reference<T> makeReference(T t) {\r
+        return new SoftReference<T>(t);\r
+    }\r
+\r
+    public static Resource resolveResource(RequestProcessor processor, String resourceId) throws DatabaseException {\r
+        try {\r
+            SerialisationSupport ss = processor.getService(SerialisationSupport.class);\r
+            return ss.getResource(Long.parseLong(resourceId));\r
+        } catch (NumberFormatException e) {\r
+            throw new DatabaseException(e);\r
+        }\r
+    }\r
+\r
+    public static ResourceArray makeResourceArray(RequestProcessor processor, Collection<String> resourceIds) throws DatabaseException {\r
+        try {\r
+            SerialisationSupport ss = processor.getService(SerialisationSupport.class);\r
+            List<Resource> rs = new ArrayList<Resource>();\r
+            for (String id : resourceIds)\r
+                rs.add(ss.getResource(Long.parseLong(id)));\r
+            return new ResourceArray(rs);\r
+        } catch (NumberFormatException e) {\r
+            throw new DatabaseException(e);\r
+        }\r
+    }\r
+\r
+    public static String getRandomAccessId(Resource r) {\r
+        try {\r
+            SerialisationSupport support = getSession().getService(SerialisationSupport.class);\r
+            return String.valueOf( support.getRandomAccessId(r) );\r
+        } catch (DatabaseException e) {\r
+            throw new RuntimeDatabaseException(e);\r
+        }\r
+    }\r
+\r
+    public static List<String> getRandomAccessIds(ResourceArray ra) {\r
+        try {\r
+            List<String> randoms = new ArrayList<String>();\r
+            SerialisationSupport support = getSession().getService(SerialisationSupport.class);\r
+            for (Resource r : ra.resources)\r
+                randoms.add(String.valueOf(support.getRandomAccessId(r)));\r
+            return Collections.unmodifiableList(randoms);\r
+        } catch (DatabaseException e) {\r
+            throw new RuntimeDatabaseException(e);\r
+        }\r
+    }\r
+\r
+    /**\r
+     * @return a graph instance if it exists and has not yet been disposed,\r
+     *         <code>null</code> otherwise\r
+     */\r
+    public static Session getSession() {\r
+        Session s = Simantics.getSession();\r
+        if (s.getService(LifecycleSupport.class).isClosed())\r
+            throw new IllegalStateException("database session is closed");\r
+        return s;\r
+    }\r
+\r
+    /**\r
+     * @return a graph instance if it exists and has not yet been disposed,\r
+     *         <code>null</code> otherwise\r
+     */\r
+    public static Session peekSession() {\r
+        Session s = Simantics.peekSession();\r
+        if (s == null)\r
+            return null;\r
+        if (s.getService(LifecycleSupport.class).isClosed())\r
+            throw new IllegalStateException("database session is closed");\r
+        return s;\r
+    }\r
+\r
+}\r