[simantics/platform.git] /

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);
                }
        }
}