1 files changed, 29 insertions, 0 deletions

diff --git a/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/planning/IQueryPlannerStrategy.java b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/planning/IQueryPlannerStrategy.java
new file mode 100644
index 00000000..6ce9d91b
--- /dev/null
+++ b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/planning/IQueryPlannerStrategy.java
@@ -0,0 +1,29 @@
+/*******************************************************************************
+ * Copyright (c) 2004-2010 Gabor Bergmann 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.matchers.planning;
+
+import org.apache.log4j.Logger;
+import tools.refinery.viatra.runtime.matchers.ViatraQueryRuntimeException;
+import tools.refinery.viatra.runtime.matchers.context.IQueryMetaContext;
+import tools.refinery.viatra.runtime.matchers.psystem.PBody;
+
+/**
+ * An algorithm that builds a query plan based on a PSystem representation of a body of constraints. This interface is
+ * for internal use of the various query backends.
+ * 
+ * @author Gabor Bergmann
+ */
+public interface IQueryPlannerStrategy {
+    
+    /**
+     * @throws ViatraQueryRuntimeException
+     */
+    public SubPlan plan(PBody pSystem, Logger logger, IQueryMetaContext context);
+}