edu.umd.cs.psl.application.groundkernelstore.MemoryGroundKernelStore.java Source code

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Here is the source code for edu.umd.cs.psl.application.groundkernelstore.MemoryGroundKernelStore.java

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/*
 * This file is part of the PSL software.
 * Copyright 2011 University of Maryland
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package edu.umd.cs.psl.application.groundkernelstore;

import com.google.common.collect.Iterables;

import de.mathnbits.util.KeyedRetrievalSet;
import edu.umd.cs.psl.application.GroundKernelStore;
import edu.umd.cs.psl.model.atom.Atom;
import edu.umd.cs.psl.model.kernel.GroundCompatibilityKernel;
import edu.umd.cs.psl.model.kernel.GroundKernel;
import edu.umd.cs.psl.model.kernel.Kernel;
import edu.umd.cs.psl.util.collection.Filters;

public class MemoryGroundKernelStore implements GroundKernelStore {

    protected final KeyedRetrievalSet<Kernel, GroundKernel> evidences;

    public MemoryGroundKernelStore() {
        evidences = new KeyedRetrievalSet<Kernel, GroundKernel>();
    }

    @Override
    public double getTotalIncompatibility() {
        double objective = 0.0;
        for (GroundKernel e : evidences) {
            objective += e.getIncompatibility();
        }
        return objective;
    }

    @Override
    public Iterable<GroundCompatibilityKernel> getCompatibilityKernels() {
        return Iterables.filter(evidences.filterIterable(Filters.ProbabilisticEvidence),
                GroundCompatibilityKernel.class);
    }

    @Override
    public int size() {
        return evidences.size();
    }

    @Override
    public Iterable<GroundKernel> getGroundKernels() {
        return evidences;
    }

    @Override
    public Iterable<GroundKernel> getGroundKernels(Kernel et) {
        return evidences.keyIterable(et);
    }

    @Override
    public void addGroundKernel(GroundKernel e) {
        if (!evidences.put(e.getKernel(), e))
            throw new IllegalArgumentException("Evidence has already been added: " + e);
        for (Atom atom : e.getAtoms())
            if (!atom.registerGroundKernel(e))
                throw new AssertionError("Evidence has already been registered with atom! " + e);
    }

    @Override
    public void changedGroundKernel(GroundKernel e) {
        for (Atom atom : e.getAtoms())
            atom.registerGroundKernel(e);
    }

    @Override
    public void removeGroundKernel(GroundKernel e) {
        //Deregister with atoms and remove from reasoner
        for (Atom atom : e.getAtoms())
            if (!atom.deregisterGroundKernel(e))
                throw new AssertionError("Evidence has never been registered with atom!");
        evidences.remove(e.getKernel(), e);
    }

    @Override
    public boolean containsGroundKernel(GroundKernel e) {
        return evidences.contains(e.getKernel(), e);
    }

    @Override
    public GroundKernel getGroundKernel(GroundKernel e) {
        return evidences.get(e.getKernel(), e);
    }

}