renamed logger to listener

[xmlrouter] / listener / src / main / java / org / wamblee / xmlrouter / listener / CompositeEventListener.java

diff --git a/listener/src/main/java/org/wamblee/xmlrouter/listener/CompositeEventListener.java b/listener/src/main/java/org/wamblee/xmlrouter/listener/CompositeEventListener.java
new file mode 100644 (file)
index 0000000..be6c92a
--- /dev/null
+++ b/listener/src/main/java/org/wamblee/xmlrouter/listener/CompositeEventListener.java
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2005-2011 the original author or authors.
+ * 
+ * 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.
+ */
+package org.wamblee.xmlrouter.listener;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import javax.print.attribute.standard.Destination;
+import javax.xml.transform.dom.DOMSource;
+
+import org.wamblee.concurrency.ReadLock;
+import org.wamblee.concurrency.WriteLock;
+import org.wamblee.xmlrouter.common.Id;
+import org.wamblee.xmlrouter.config.Transformation;
+
+public class CompositeEventListener implements EventListener {
+
+    private static final Logger LOGGER = Logger
+        .getLogger(CompositeEventListener.class.getName());
+    private List<EventListener> loggers;
+
+    public CompositeEventListener() {
+        loggers = new ArrayList<EventListener>();
+    }
+
+    /**
+     * Adds a logger.
+     * 
+     * @param aLogger
+     *            Logger
+     */
+    @WriteLock
+    public void addLogger(EventListener aLogger) {
+        loggers.add(aLogger);
+    }
+
+    /**
+     * Removes a logger.
+     * 
+     * @param aLogger
+     *            Logger
+     * @return True iff the logger was removed.
+     */
+    @WriteLock
+    public boolean removeLogger(EventListener aLogger) {
+        Iterator<EventListener> logger = loggers.iterator();
+        while (logger.hasNext()) {
+            EventListener value = logger.next();
+            if (value == aLogger) {
+                logger.remove();
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    @ReadLock
+    public void delivered(String aDocumentType, Id<DOMSource> aEventId,
+        DOMSource aEvent, List<Transformation> aSequence,
+        Id<Destination> aDestination, String aDestinationName,
+        boolean aSuccessFlag) {
+        for (EventListener logger : loggers) {
+            try {
+                logger.delivered(aDocumentType, aEventId, aEvent, aSequence,
+                    aDestination, aDestinationName, aSuccessFlag);
+            } catch (Exception e) {
+                LOGGER.log(Level.WARNING, "Logger threw exception", e);
+            }
+        }
+    }
+
+    @Override
+    @ReadLock
+    public void notDelivered(String aDocumentType, Id<DOMSource> aEventId,
+        DOMSource aEvent) {
+        for (EventListener logger : loggers) {
+            try {
+                logger.notDelivered(aDocumentType, aEventId, aEvent);
+            } catch (Exception e) {
+                LOGGER.log(Level.WARNING, "Logger threw exception", e);
+            }
+        }
+    }
+
+}