1 files changed, 77 insertions, 0 deletions

diff --git a/subprojects/viatra-runtime-matchers/src/main/java/tools/refinery/viatra/runtime/matchers/memories/IdentityMaskedTupleMemory.java b/subprojects/viatra-runtime-matchers/src/main/java/tools/refinery/viatra/runtime/matchers/memories/IdentityMaskedTupleMemory.java
new file mode 100644
index 00000000..dc59daf5
--- /dev/null
+++ b/subprojects/viatra-runtime-matchers/src/main/java/tools/refinery/viatra/runtime/matchers/memories/IdentityMaskedTupleMemory.java
@@ -0,0 +1,77 @@
+/*******************************************************************************
+ * Copyright (c) 2010-2018, Gabor Bergmann, IncQuery Labs Ltd.
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-v20.html.
+ * 
+ * SPDX-License-Identifier: EPL-2.0
+ *******************************************************************************/
+package tools.refinery.viatra.runtime.matchers.memories;
+
+import java.util.Collection;
+import java.util.Collections;
+
+import tools.refinery.viatra.runtime.matchers.tuple.ITuple;
+import tools.refinery.viatra.runtime.matchers.tuple.Tuple;
+import tools.refinery.viatra.runtime.matchers.tuple.TupleMask;
+import tools.refinery.viatra.runtime.matchers.util.CollectionsFactory.MemoryType;
+
+/**
+ * Specialized for identity mask; tuples are stored as a simple set/multiset memory.
+ * 
+ * @author Gabor Bergmann
+ * @since 2.0
+ */
+public final class IdentityMaskedTupleMemory<Timestamp extends Comparable<Timestamp>> extends AbstractTrivialMaskedMemory<Timestamp> {
+
+    /**
+     * @param mask
+     *            The mask used to index the matchings
+     * @param owner the object "owning" this memory
+     * @param bucketType the kind of tuple collection maintained for each indexer bucket
+     * @since 2.0
+     */
+    public IdentityMaskedTupleMemory(TupleMask mask, MemoryType bucketType, Object owner) {
+        super(mask, bucketType, owner);
+        if (!mask.isIdentity()) throw new IllegalArgumentException(mask.toString());
+    }
+
+    @Override
+    public int getKeysetSize() {
+        return tuples.size();
+    }
+
+    @Override
+    public Iterable<Tuple> getSignatures() {
+        return tuples;
+    }
+
+    @Override
+    public Collection<Tuple> get(ITuple signature) {
+        Tuple contained = tuples.theContainedVersionOfUnsafe(signature);
+        return contained != null ? 
+                        Collections.singleton(contained) :
+                        null;
+    }
+
+    @Override
+    public boolean remove(Tuple tuple, Tuple signature) {
+        return tuples.removeOne(tuple);
+    }
+
+    @Override
+    public boolean remove(Tuple tuple) {
+        return tuples.removeOne(tuple);
+    }
+
+    @Override
+    public boolean add(Tuple tuple, Tuple signature) {
+        return tuples.addOne(tuple);
+    }
+
+    @Override
+    public boolean add(Tuple tuple) {
+        return tuples.addOne(tuple);
+    }
+
+}