Even more atomic router configuration.

[xmlrouter] / impl / src / main / java / org / wamblee / xmlrouter / impl / XMLRouterConfigurationImpl.java

diff --git a/impl/src/main/java/org/wamblee/xmlrouter/impl/XMLRouterConfigurationImpl.java b/impl/src/main/java/org/wamblee/xmlrouter/impl/XMLRouterConfigurationImpl.java
new file mode 100644 (file)
index 0000000..b0b0271
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+++ b/impl/src/main/java/org/wamblee/xmlrouter/impl/XMLRouterConfigurationImpl.java
@@ -0,0 +1,71 @@
+/*
+ * 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.impl;
+
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+
+/**
+ * Implements the XML Router configuration interface including the required
+ * locking.
+ * 
+ * @author Erik Brakkee
+ */
+public class XMLRouterConfigurationImpl implements XMLRouterConfiguration {
+
+    private final ReentrantReadWriteLock rwlock = new ReentrantReadWriteLock(
+        true);
+    private final ReentrantReadWriteLock.ReadLock rlock = rwlock.readLock();
+    private final ReentrantReadWriteLock.WriteLock wlock = rwlock.writeLock();
+
+    private ExtendedRouterConfig config;
+    private TransformationPaths transformations;
+
+    public XMLRouterConfigurationImpl(ExtendedRouterConfig aConfig,
+        TransformationPaths aTransformations) {
+        config = aConfig;
+        transformations = aTransformations;
+    }
+
+    @Override
+    public void startConfigurationChange() {
+        wlock.lock();
+    }
+
+    @Override
+    public void endConfigurationChange() {
+        wlock.unlock();
+    }
+
+    @Override
+    public void startPublishEvent() {
+        rlock.lock();
+    }
+
+    @Override
+    public void endPublishEvent() {
+        rlock.unlock();
+    }
+
+    @Override
+    public ExtendedRouterConfig routerConfig() {
+        return config;
+    }
+
+    @Override
+    public TransformationPaths transformations() {
+        return transformations;
+    }
+}