X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.graph.compiler%2Fsrc%2Forg%2Fsimantics%2Fgraph%2Fcompiler%2Finternal%2Fprocedures%2FCompactify.java;fp=bundles%2Forg.simantics.graph.compiler%2Fsrc%2Forg%2Fsimantics%2Fgraph%2Fcompiler%2Finternal%2Fprocedures%2FCompactify.java;h=82fd5798c09dff76c6e23db5b2979358291e8221;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08

diff --git a/bundles/org.simantics.graph.compiler/src/org/simantics/graph/compiler/internal/procedures/Compactify.java b/bundles/org.simantics.graph.compiler/src/org/simantics/graph/compiler/internal/procedures/Compactify.java
new file mode 100644
index 000000000..82fd5798c
--- /dev/null
+++ b/bundles/org.simantics.graph.compiler/src/org/simantics/graph/compiler/internal/procedures/Compactify.java
@@ -0,0 +1,32 @@
+package org.simantics.graph.compiler.internal.procedures;
+
+import gnu.trove.map.hash.TIntIntHashMap;
+
+import org.simantics.graph.store.GraphStore;
+
+public class Compactify implements Runnable {
+	GraphStore store;
+
+	public Compactify(GraphStore store) {
+		this.store = store;
+	}
+
+	@Override
+	public void run() {
+		// Mark all used resources
+		int resourceCount = store.identities.getResourceCount();
+		final boolean[] temp = new boolean[resourceCount];
+		store.collectReferences(temp);
+		
+		// Create a map
+		int newResourceCount = 0;
+		TIntIntHashMap map = new TIntIntHashMap(resourceCount);
+		for(int i=0;i<resourceCount;++i)
+			if(temp[i])
+				map.put(i, newResourceCount++);
+		if(newResourceCount < resourceCount) {
+			store.map(map);
+			store.identities.setResourceCount(newResourceCount);
+		}
+	}
+}