1 files changed, 40 insertions, 0 deletions

diff --git a/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/registry/IConnectorListener.java b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/registry/IConnectorListener.java
new file mode 100644
index 00000000..318415cc
--- /dev/null
+++ b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/registry/IConnectorListener.java
@@ -0,0 +1,40 @@
+/*******************************************************************************
+ * Copyright (c) 2010-2016, Abel Hegedus, 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.registry;
+
+import tools.refinery.viatra.runtime.extensibility.IQuerySpecificationProvider;
+
+/**
+ * Connector listeners are used to receive notifications on addition and removal of query specifications.
+ * The connector itself is also passed in the methods to allow the usage of the same listener on multiple connectors.
+ * 
+ * @author Abel Hegedus
+ * @since 1.3
+ *
+ */
+public interface IConnectorListener {
+
+    /**
+     * Called when a new query specification is added to the given connector.
+     * The provider interface is used to avoid class loading as long as possible.
+     * 
+     * @param connector that has a new specification
+     * @param specificationProvider that wraps the new specification
+     */
+    void querySpecificationAdded(IRegistrySourceConnector connector, IQuerySpecificationProvider specificationProvider);
+    
+    /**
+     * Called when a query specification is removed from the given connector.
+     * The provider interface is used to avoid class loading as long as possible.
+     * 
+     * @param connector that has a removed specification
+     * @param specificationProvider that wraps the removed specification
+     */
+    void querySpecificationRemoved(IRegistrySourceConnector connector, IQuerySpecificationProvider specificationProvider);
+}