1 files changed, 49 insertions, 0 deletions

diff --git a/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/context/IQueryBackendContext.java b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/context/IQueryBackendContext.java
new file mode 100644
index 00000000..04f00aaa
--- /dev/null
+++ b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/context/IQueryBackendContext.java
@@ -0,0 +1,49 @@
+/*******************************************************************************
+ * Copyright (c) 2010-2016, Grill Balázs, IncQueryLabs 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.context;
+
+import org.apache.log4j.Logger;
+import tools.refinery.viatra.runtime.matchers.backend.IMatcherCapability;
+import tools.refinery.viatra.runtime.matchers.backend.IQueryBackendHintProvider;
+import tools.refinery.viatra.runtime.matchers.backend.QueryEvaluationHint;
+import tools.refinery.viatra.runtime.matchers.psystem.analysis.QueryAnalyzer;
+import tools.refinery.viatra.runtime.matchers.psystem.queries.PQuery;
+
+/**
+ * This interface is a collector which holds every API that is provided by the engine to control
+ * the operation of the backends.
+ *
+ * @since 1.5
+ * @noimplement This interface is not intended to be implemented by clients.
+ */
+public interface IQueryBackendContext {
+
+    Logger getLogger();
+    
+    IQueryRuntimeContext getRuntimeContext();
+    
+    IQueryCacheContext getQueryCacheContext();
+    
+    IQueryBackendHintProvider getHintProvider();
+    
+    IQueryResultProviderAccess getResultProviderAccess();
+    
+    QueryAnalyzer getQueryAnalyzer();
+    
+    /**
+     * @since 2.0
+     */
+    IMatcherCapability getRequiredMatcherCapability(PQuery query, QueryEvaluationHint overrideHints);
+    
+    /**
+     * @since 1.6
+     */
+    boolean areUpdatesDelayed();
+    
+}