X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;ds=sidebyside;f=bundles%2Forg.simantics.db.layer0%2Fsrc%2Forg%2Fsimantics%2Fdb%2Flayer0%2Futil%2FTGRepresentation.java;fp=bundles%2Forg.simantics.db.layer0%2Fsrc%2Forg%2Fsimantics%2Fdb%2Flayer0%2Futil%2FTGRepresentation.java;h=9e8012caf07605b8555768326a183db79aacb487;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/util/TGRepresentation.java b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/util/TGRepresentation.java
new file mode 100644
index 000000000..9e8012caf
--- /dev/null
+++ b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/util/TGRepresentation.java
@@ -0,0 +1,78 @@
+package org.simantics.db.layer0.util;
+
+import java.util.Arrays;
+import java.util.Map;
+
+import org.simantics.db.ReadGraph;
+import org.simantics.db.RequestProcessor;
+import org.simantics.db.Resource;
+import org.simantics.db.common.request.UniqueRead;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.util.SimanticsClipboard.Representation;
+import org.simantics.graph.db.TransferableGraphs;
+import org.simantics.graph.representation.TransferableGraph1;
+import org.simantics.utils.datastructures.hints.IHintContext.Key;
+
+public class TGRepresentation implements Representation {
+
+	protected boolean ignoreVirtualResources = false;
+	protected Resource[] resources;
+	private TransferableGraph1 value = null;
+	private TransferableGraphConfiguration2 configuration;
+	
+	public TGRepresentation(Resource ... resources) {
+		this.resources = resources;
+	}
+
+	public TGRepresentation(boolean ignoreVirtualResources, Resource ... resources) {
+		this.ignoreVirtualResources = ignoreVirtualResources;
+		this.resources = resources;
+	}
+
+	public TGRepresentation(TransferableGraphConfiguration2 configuration) {
+		this.configuration = configuration;
+	}
+
+	public TGRepresentation(TransferableGraph1 value) {
+		this.value = value;
+	}
+
+	@Override
+	public Key getKey() {
+		return SimanticsKeys.KEY_TRANSFERABLE_GRAPH;
+	}
+	
+	public TransferableGraph1 compute(ReadGraph graph, Map<String,Object> hints) throws DatabaseException {
+		
+		if(configuration == null) {
+			configuration = new TransferableGraphConfiguration2(graph, Arrays.asList(resources), ignoreVirtualResources, false);
+			configuration.exclusionFunction = TGRepresentationUtils.computeExclusionFunction(graph, resources, hints);
+		}
+		
+		ModelTransferableGraphSource source = graph.syncRequest(new ModelTransferableGraphSourceRequest(configuration));
+		return TransferableGraphs.create(graph, source);
+		
+	}
+	
+	@SuppressWarnings("unchecked")
+	@Override
+	public <T> T getValue(RequestProcessor processor, Map<String,Object> hints) throws DatabaseException {
+		
+		if(value == null) {
+
+			value = processor.syncRequest(new UniqueRead<TransferableGraph1>() {
+
+				@Override
+				public TransferableGraph1 perform(ReadGraph graph) throws DatabaseException {
+					return compute(graph, hints);
+				}
+
+			});
+
+		}
+		
+		return (T)value;
+		
+	}
+	
+}
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