1 files changed, 100 insertions, 0 deletions

diff --git a/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/matcher/ReteBackendFactory.java b/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/matcher/ReteBackendFactory.java
new file mode 100644
index 00000000..347cabc4
--- /dev/null
+++ b/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/matcher/ReteBackendFactory.java
@@ -0,0 +1,100 @@
+/*******************************************************************************
+ * Copyright (c) 2010-2014, Bergmann Gabor, Istvan Rath and Daniel Varro
+ * 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.rete.matcher;
+
+import tools.refinery.viatra.runtime.matchers.backend.IMatcherCapability;
+import tools.refinery.viatra.runtime.matchers.backend.IQueryBackend;
+import tools.refinery.viatra.runtime.matchers.backend.IQueryBackendFactory;
+import tools.refinery.viatra.runtime.matchers.backend.IQueryBackendHintProvider;
+import tools.refinery.viatra.runtime.matchers.backend.QueryEvaluationHint;
+import tools.refinery.viatra.runtime.matchers.context.IQueryBackendContext;
+import tools.refinery.viatra.runtime.matchers.psystem.queries.PQuery;
+import tools.refinery.viatra.runtime.rete.construction.plancompiler.ReteRecipeCompiler;
+import tools.refinery.viatra.runtime.rete.util.Options;
+
+public class ReteBackendFactory implements IQueryBackendFactory {
+    /**
+     * EXPERIMENTAL
+     */
+    protected static final int reteThreads = 0;
+
+    /**
+     * @since 2.0
+     */
+    public static final ReteBackendFactory INSTANCE = new ReteBackendFactory();
+
+    /**
+     * @deprecated Use the static {@link #INSTANCE} field instead
+     */
+    @Deprecated
+    public ReteBackendFactory() {
+    }
+
+    /**
+     * @since 1.5
+     */
+    @Override
+    public IQueryBackend create(IQueryBackendContext context) {
+        return create(context, false, null);
+    }
+
+    /**
+     * @since 2.4
+     */
+    public IQueryBackend create(IQueryBackendContext context, boolean deleteAndRederiveEvaluation,
+            TimelyConfiguration timelyConfiguration) {
+        ReteEngine engine;
+        engine = new ReteEngine(context, reteThreads, deleteAndRederiveEvaluation, timelyConfiguration);
+        IQueryBackendHintProvider hintConfiguration = engine.getHintConfiguration();
+        ReteRecipeCompiler compiler = new ReteRecipeCompiler(
+                Options.builderMethod.layoutStrategy(context, hintConfiguration), context.getLogger(),
+                context.getRuntimeContext().getMetaContext(), context.getQueryCacheContext(), hintConfiguration,
+                context.getQueryAnalyzer(), deleteAndRederiveEvaluation, timelyConfiguration);
+        engine.setCompiler(compiler);
+        return engine;
+    }
+
+    @Override
+    public Class<? extends IQueryBackend> getBackendClass() {
+        return ReteEngine.class;
+    }
+
+    @Override
+    public int hashCode() {
+        return ReteBackendFactory.class.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (!(obj instanceof ReteBackendFactory)) {
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * @since 1.4
+     */
+    @Override
+    public IMatcherCapability calculateRequiredCapability(PQuery query, QueryEvaluationHint hint) {
+        return new IncrementalMatcherCapability();
+    }
+
+    @Override
+    public boolean isCaching() {
+        return true;
+    }
+
+}
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