X-Git-Url: https://gerrit.onap.org/r/gitweb?a=blobdiff_plain;f=ONAP-REST%2Fsrc%2Fmain%2Fjava%2Forg%2Fonap%2Fpolicy%2Frest%2Futil%2FPolicyItemSetChangeNotifier.java;fp=ONAP-REST%2Fsrc%2Fmain%2Fjava%2Forg%2Fonap%2Fpolicy%2Frest%2Futil%2FPolicyItemSetChangeNotifier.java;h=b5f04cf3ab8146ca5d34271b6a9d8e1bf4e4f97e;hb=9bf8e18042746f52b96155bb2654dfb472f09e14;hp=0000000000000000000000000000000000000000;hpb=b2c2186295866511b3c989279599388aaacd0ba2;p=policy%2Fengine.git

diff --git a/ONAP-REST/src/main/java/org/onap/policy/rest/util/PolicyItemSetChangeNotifier.java b/ONAP-REST/src/main/java/org/onap/policy/rest/util/PolicyItemSetChangeNotifier.java
new file mode 100644
index 000000000..b5f04cf3a
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+++ b/ONAP-REST/src/main/java/org/onap/policy/rest/util/PolicyItemSetChangeNotifier.java
@@ -0,0 +1,96 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP Policy Engine
+ * ================================================================================
+ * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.rest.util;
+
+
+import java.io.Serializable;
+import java.util.Collection;
+import java.util.EventObject;
+import java.util.LinkedList;
+
+import org.onap.policy.rest.util.PolicyContainer.ItemSetChangeEvent;
+import org.onap.policy.rest.util.PolicyContainer.ItemSetChangeListener;
+
+
+
+public class PolicyItemSetChangeNotifier implements PolicyContainer.ItemSetChangeNotifier {
+	private static final long serialVersionUID = 1L;
+    private Collection<PolicyContainer.ItemSetChangeListener> itemSetChangeListeners = null;
+    private PolicyContainer container = null;
+    
+    public PolicyItemSetChangeNotifier() {
+    	// Empty constructor
+    }
+    
+    protected void setContainer(PolicyContainer c) {
+    	this.container = c;
+    }
+
+	@Override
+	public void addItemSetChangeListener(ItemSetChangeListener listener) {
+        if (getItemSetChangeListeners() == null) {
+            setItemSetChangeListeners(new LinkedList<PolicyContainer.ItemSetChangeListener>());
+        }
+        getItemSetChangeListeners().add(listener);	}
+
+	@Override
+	public void removeItemSetChangeListener(ItemSetChangeListener listener) {
+        if (getItemSetChangeListeners() != null) {
+            getItemSetChangeListeners().remove(listener);
+        }
+    }
+	
+	protected static class BaseItemSetChangeEvent extends EventObject implements
+	    PolicyContainer.ItemSetChangeEvent, Serializable {
+		private static final long serialVersionUID = 1L;
+
+		protected BaseItemSetChangeEvent(PolicyContainer source) {
+		    super(source);
+		}
+		
+		@Override
+		public PolicyContainer getContainer() {
+		    return (PolicyContainer) getSource();
+		}
+	}
+
+    protected void setItemSetChangeListeners(
+            Collection<PolicyContainer.ItemSetChangeListener> itemSetChangeListeners) {
+        this.itemSetChangeListeners = itemSetChangeListeners;
+    }
+    protected Collection<PolicyContainer.ItemSetChangeListener> getItemSetChangeListeners() {
+        return itemSetChangeListeners;
+    }
+  
+    protected void fireItemSetChange() {
+        fireItemSetChange(new BaseItemSetChangeEvent(this.container));
+    }
+
+    protected void fireItemSetChange(ItemSetChangeEvent event) {
+        if (getItemSetChangeListeners() != null) {
+            final Object[] l = getItemSetChangeListeners().toArray();
+            for (int i = 0; i < l.length; i++) {
+                ((PolicyContainer.ItemSetChangeListener) l[i])
+                        .containerItemSetChange(event);
+            }
+        }
+    }
+}