X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.db%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fservice%2FVirtualGraphSupport.java;h=5f91e9d0ff7538e63b8a4fc4805e619761afd5c5;hp=a1512ec46c5b0d8af6a72e2317fbd2a9f7803efe;hb=0ae2b770234dfc3cbb18bd38f324125cf0faca07;hpb=24e2b34260f219f0d1644ca7a138894980e25b14

diff --git a/bundles/org.simantics.db/src/org/simantics/db/service/VirtualGraphSupport.java b/bundles/org.simantics.db/src/org/simantics/db/service/VirtualGraphSupport.java
index a1512ec46..5f91e9d0f 100644
--- a/bundles/org.simantics.db/src/org/simantics/db/service/VirtualGraphSupport.java
+++ b/bundles/org.simantics.db/src/org/simantics/db/service/VirtualGraphSupport.java
@@ -1,116 +1,116 @@
-/*******************************************************************************
- * 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.service;
-
-import java.util.Collection;
-
-import org.simantics.db.ReadGraph;
-import org.simantics.db.Resource;
-import org.simantics.db.ServiceLocator;
-import org.simantics.db.Session;
-import org.simantics.db.Statement;
-import org.simantics.db.VirtualGraph;
-import org.simantics.db.VirtualGraph.Persistency;
-import org.simantics.db.WriteOnlyGraph;
-import org.simantics.db.exception.DatabaseException;
-
-
-/**
- * A {@link Session} service for working with virtual graphs. Virtual graphs
- * offer a way to augment the persistent graph database with
- * memory/workspace-persistent information. Use
- * {@link ServiceLocator#getService(Class)} to retrieve this support from a
- * {@link Session}.
- * 
- * See <a href="http://dev.simantics.org/index.php/Virtual_Graphs">Simantics
- * developer wiki</a> for documentation.
- * 
- * @author Antti Villberg
- */
-public interface VirtualGraphSupport {
-
-    /**
-     * Gets previously initialized or creates new memory-persistent
-     * (session-transient) virtual graph by the specified identifier.
-     * 
-     * The contents of memory-persistent graphs are lost
-     * when the session finishes.
-     * 
-     * @param identifier memory-persistent virtual graph identifier
-     */
-    VirtualGraph getMemoryPersistent(String identifier);
-
-    /**
-     * First tries to return a previously loaded workspace-persistent graph by
-     * identifier. Then tries to restore the graph from disk by identifier.
-     * Finally creates a new workspace-persistent graph.
-     * 
-     * The graph is automatically persisted to disk.
-     * 
-     * @param identifier workspace-persistent virtual graph identifier
-     */
-    VirtualGraph getWorkspacePersistent(String identifier);
-
-    /**
-     * Removes this graph from the set of active graphs. If the graph is
-     * workspace persistent, the contents are deleted from disk.
-     * 
-     * @return <code>true</code> if the virtual graph was properly discarded
-     */
-    boolean discard(VirtualGraph graph);
-
-    /**
-     * Transfers the contents of this virtual graph into the persistent store
-     * 
-     * @return <code>true</code> if the virtual graph was properly integrated
-     */
-    boolean integrate(WriteOnlyGraph graph, VirtualGraph vg) throws DatabaseException;
-    
-    /**
-     * Lists all active virtual graphs currently attached to the owner database
-     * session.
-     * 
-     * @return list of active virtual graphs
-     */
-    Collection<VirtualGraph> listGraphs();
-
-    /**
-     * List all statements in the specified virtual graph.
-     * 
-     * @param graph the virtual graph to get statements from
-     * @return statements in the specified virtual graph
-     */
-    Collection<Statement> listStatements(VirtualGraph graph);
-
-    /**
-     * List all resources that contain literal values in the specified virtual
-     * graph.
-     * 
-     * @param graph the virtual graph to get resources from
-     * @return resources in the specified virtual graph containing literals
-     */
-    Collection<Resource> listValues(VirtualGraph graph);
-    
-    VirtualGraph getGraph(ReadGraph graph, Resource subject, Resource predicate, Resource object) throws DatabaseException;
-
-    VirtualGraph getGraph(ReadGraph graph, Resource subject, Resource predicate) throws DatabaseException;
-
-    VirtualGraph getGraph(ReadGraph graph, Resource subject) throws DatabaseException;
-
-    /**
-     * A simple method for persisting the current state of all managed virtual
-     * graphs where {@link VirtualGraph#getPersistency()} is
-     * {@link Persistency#WORKSPACE}.
-     */
-    void saveAll() throws DatabaseException;
-
-}
+/*******************************************************************************
+ * 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.service;
+
+import java.util.Collection;
+
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.ServiceLocator;
+import org.simantics.db.Session;
+import org.simantics.db.Statement;
+import org.simantics.db.VirtualGraph;
+import org.simantics.db.VirtualGraph.Persistency;
+import org.simantics.db.WriteOnlyGraph;
+import org.simantics.db.exception.DatabaseException;
+
+
+/**
+ * A {@link Session} service for working with virtual graphs. Virtual graphs
+ * offer a way to augment the persistent graph database with
+ * memory/workspace-persistent information. Use
+ * {@link ServiceLocator#getService(Class)} to retrieve this support from a
+ * {@link Session}.
+ * 
+ * See <a href="http://dev.simantics.org/index.php/Virtual_Graphs">Simantics
+ * developer wiki</a> for documentation.
+ * 
+ * @author Antti Villberg
+ */
+public interface VirtualGraphSupport {
+
+    /**
+     * Gets previously initialized or creates new memory-persistent
+     * (session-transient) virtual graph by the specified identifier.
+     * 
+     * The contents of memory-persistent graphs are lost
+     * when the session finishes.
+     * 
+     * @param identifier memory-persistent virtual graph identifier
+     */
+    VirtualGraph getMemoryPersistent(String identifier);
+
+    /**
+     * First tries to return a previously loaded workspace-persistent graph by
+     * identifier. Then tries to restore the graph from disk by identifier.
+     * Finally creates a new workspace-persistent graph.
+     * 
+     * The graph is automatically persisted to disk.
+     * 
+     * @param identifier workspace-persistent virtual graph identifier
+     */
+    VirtualGraph getWorkspacePersistent(String identifier);
+
+    /**
+     * Removes this graph from the set of active graphs. If the graph is
+     * workspace persistent, the contents are deleted from disk.
+     * 
+     * @return <code>true</code> if the virtual graph was properly discarded
+     */
+    boolean discard(VirtualGraph graph);
+
+    /**
+     * Transfers the contents of this virtual graph into the persistent store
+     * 
+     * @return <code>true</code> if the virtual graph was properly integrated
+     */
+    boolean integrate(WriteOnlyGraph graph, VirtualGraph vg) throws DatabaseException;
+    
+    /**
+     * Lists all active virtual graphs currently attached to the owner database
+     * session.
+     * 
+     * @return list of active virtual graphs
+     */
+    Collection<VirtualGraph> listGraphs();
+
+    /**
+     * List all statements in the specified virtual graph.
+     * 
+     * @param graph the virtual graph to get statements from
+     * @return statements in the specified virtual graph
+     */
+    Collection<Statement> listStatements(VirtualGraph graph);
+
+    /**
+     * List all resources that contain literal values in the specified virtual
+     * graph.
+     * 
+     * @param graph the virtual graph to get resources from
+     * @return resources in the specified virtual graph containing literals
+     */
+    Collection<Resource> listValues(VirtualGraph graph);
+    
+    VirtualGraph getGraph(ReadGraph graph, Resource subject, Resource predicate, Resource object) throws DatabaseException;
+
+    VirtualGraph getGraph(ReadGraph graph, Resource subject, Resource predicate) throws DatabaseException;
+
+    VirtualGraph getGraph(ReadGraph graph, Resource subject) throws DatabaseException;
+
+    /**
+     * A simple method for persisting the current state of all managed virtual
+     * graphs where {@link VirtualGraph#getPersistency()} is
+     * {@link Persistency#WORKSPACE}.
+     */
+    void saveAll() throws DatabaseException;
+
+}