SCL API for GraphFile plug-in.

[simantics/platform.git] / bundles / org.simantics.graphfile / src / org / simantics / graphfile / util / GraphFileUtil.java

diff --git a/bundles/org.simantics.graphfile/src/org/simantics/graphfile/util/GraphFileUtil.java b/bundles/org.simantics.graphfile/src/org/simantics/graphfile/util/GraphFileUtil.java
index fbfcc3a146e9c39a63853cec2faf3c6d52eaa29b..637a5d0ae3a1976f05a002d9a9096b530018fb55 100644 (file)
--- a/bundles/org.simantics.graphfile/src/org/simantics/graphfile/util/GraphFileUtil.java
+++ b/bundles/org.simantics.graphfile/src/org/simantics/graphfile/util/GraphFileUtil.java
@@ -12,6 +12,7 @@
 package org.simantics.graphfile.util;
 
 import java.io.ByteArrayInputStream;
+import java.io.DataInputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
@@ -34,6 +35,7 @@ import org.simantics.db.common.request.ReadRequest;
 import org.simantics.db.common.request.WriteRequest;
 import org.simantics.db.common.request.WriteResultRequest;
 import org.simantics.db.common.utils.LiteralFileUtil;
+import org.simantics.db.common.utils.Logger;
 import org.simantics.db.exception.DatabaseException;
 import org.simantics.db.exception.DoesNotContainValueException;
 import org.simantics.db.exception.ManyObjectsForFunctionalRelationException;
@@ -41,6 +43,7 @@ import org.simantics.db.exception.NoSingleResultException;
 import org.simantics.db.exception.ServiceException;
 import org.simantics.db.request.Read;
 import org.simantics.db.service.ClusteringSupport;
+import org.simantics.db.service.TransferableGraphSupport;
 import org.simantics.graphfile.ontology.GraphFileResource;
 import org.simantics.layer0.Layer0;
 
@@ -578,4 +581,52 @@ public class GraphFileUtil {
             }
         });
     }
+    
+    /**
+     * SCL java binding cannot make difference between methods that have two versions, one with Read/WriteGraph, and one without.
+     * Hence we have to introduce a set of methods which have no alternate versions. 
+     */
+    
+    
+    public static void writeDataToGraphSCLhack(WriteGraph graph, File file, Resource graphFile) throws IOException, DatabaseException{
+       writeDataToGraph(graph, file, graphFile);
+       
+    }
+    
+    public static File toTempFileSCLhack(ReadGraph graph, Resource res)throws DatabaseException {
+       return toTempFile(graph, res);
+    }
+    
+    public static void writeDataToFileSCLhack(ReadGraph graph, Resource res, File file) throws DatabaseException, IOException {
+       writeDataToFile(graph, res, file);
+    }
+    
+    public static void toGraphSCLhack(WriteGraph graph, String filename, Resource graphFile) throws DatabaseException, IOException {
+       toGraph(graph, filename, graphFile);
+    }
+    
+    
+    public static byte[] getData(ReadGraph graph, Resource graphFile) throws DatabaseException{
+       GraphFileResource GF = GraphFileResource.getInstance(graph);
+       Resource fileData = graph.getSingleObject(graphFile, GF.HasFiledata);
+       TransferableGraphSupport tgs = graph.getService(TransferableGraphSupport.class);
+               InputStream input = tgs.getValueStream(graph, fileData);
+               DataInputStream di = new DataInputStream(input);
+               try {
+                       int length = di.readInt();
+                       byte[] content = new byte[length];
+                       di.read(content);
+                       return content;
+               } catch (IOException e) {
+                       Logger.defaultLogError(e);
+               }
+               return null;
+    }
+    
+    public static String getDataAsString(ReadGraph graph, Resource graphFile) throws DatabaseException{
+       byte[] content = getData(graph, graphFile);
+               String s =  new String(content);
+               return s;
+    }
+
 }