X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.ui%2Fsrc%2Forg%2Fsimantics%2Fui%2Fworkbench%2FResourceInputs.java;fp=bundles%2Forg.simantics.ui%2Fsrc%2Forg%2Fsimantics%2Fui%2Fworkbench%2FResourceInputs.java;h=01d937eb2269f03882834118bceb4dbdfbaf41fa;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

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
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index 000000000..01d937eb2
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+++ b/bundles/org.simantics.ui/src/org/simantics/ui/workbench/ResourceInputs.java
@@ -0,0 +1,106 @@
+/*******************************************************************************
+ * Copyright (c) 2012 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.ui.workbench;
+
+import java.lang.ref.Reference;
+import java.lang.ref.SoftReference;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+
+import org.simantics.Simantics;
+import org.simantics.db.RequestProcessor;
+import org.simantics.db.Resource;
+import org.simantics.db.Session;
+import org.simantics.db.common.ResourceArray;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.exception.RuntimeDatabaseException;
+import org.simantics.db.service.LifecycleSupport;
+import org.simantics.db.service.SerialisationSupport;
+
+/**
+ * @author Tuukka Lehtonen
+ */
+final class ResourceInputs {
+
+    public static <T> Reference<T> makeReference(T t) {
+        return new SoftReference<T>(t);
+    }
+
+    public static Resource resolveResource(RequestProcessor processor, String resourceId) throws DatabaseException {
+        try {
+            SerialisationSupport ss = processor.getService(SerialisationSupport.class);
+            return ss.getResource(Long.parseLong(resourceId));
+        } catch (NumberFormatException e) {
+            throw new DatabaseException(e);
+        }
+    }
+
+    public static ResourceArray makeResourceArray(RequestProcessor processor, Collection<String> resourceIds) throws DatabaseException {
+        try {
+            SerialisationSupport ss = processor.getService(SerialisationSupport.class);
+            List<Resource> rs = new ArrayList<Resource>();
+            for (String id : resourceIds)
+                rs.add(ss.getResource(Long.parseLong(id)));
+            return new ResourceArray(rs);
+        } catch (NumberFormatException e) {
+            throw new DatabaseException(e);
+        }
+    }
+
+    public static String getRandomAccessId(Resource r) {
+        try {
+            SerialisationSupport support = getSession().getService(SerialisationSupport.class);
+            return String.valueOf( support.getRandomAccessId(r) );
+        } catch (DatabaseException e) {
+            throw new RuntimeDatabaseException(e);
+        }
+    }
+
+    public static List<String> getRandomAccessIds(ResourceArray ra) {
+        try {
+            List<String> randoms = new ArrayList<String>();
+            SerialisationSupport support = getSession().getService(SerialisationSupport.class);
+            for (Resource r : ra.resources)
+                randoms.add(String.valueOf(support.getRandomAccessId(r)));
+            return Collections.unmodifiableList(randoms);
+        } catch (DatabaseException e) {
+            throw new RuntimeDatabaseException(e);
+        }
+    }
+
+    /**
+     * @return a graph instance if it exists and has not yet been disposed,
+     *         <code>null</code> otherwise
+     */
+    public static Session getSession() {
+        Session s = Simantics.getSession();
+        if (s.getService(LifecycleSupport.class).isClosed())
+            throw new IllegalStateException("database session is closed");
+        return s;
+    }
+
+    /**
+     * @return a graph instance if it exists and has not yet been disposed,
+     *         <code>null</code> otherwise
+     */
+    public static Session peekSession() {
+        Session s = Simantics.peekSession();
+        if (s == null)
+            return null;
+        if (s.getService(LifecycleSupport.class).isClosed())
+            throw new IllegalStateException("database session is closed");
+        return s;
+    }
+
+}