Adding JMCR-Stable version

[Benchmarks_CSolver.git] / JMCR-Stable / mcr-test / src / pool107 / org / apache / commons / pool / BaseObjectPool.java

diff --git a/JMCR-Stable/mcr-test/src/pool107/org/apache/commons/pool/BaseObjectPool.java b/JMCR-Stable/mcr-test/src/pool107/org/apache/commons/pool/BaseObjectPool.java
new file mode 100644 (file)
index 0000000..c6cca26
--- /dev/null
+++ b/JMCR-Stable/mcr-test/src/pool107/org/apache/commons/pool/BaseObjectPool.java
@@ -0,0 +1,104 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 pool107.org.apache.commons.pool;
+
+/**
+ * A simple base implementation of {@link ObjectPool}.
+ * Optional operations are implemented to either do nothing, return a value
+ * indicating it is unsupported or throw {@link UnsupportedOperationException}.
+ *
+ * @author Rodney Waldhoff
+ * @author Sandy McArthur
+ * @version $Revision: 480413 $ $Date: 2006-11-29 00:16:05 -0500 (Wed, 29 Nov 2006) $
+ * @since Pool 1.0
+ */
+public abstract class BaseObjectPool implements ObjectPool {
+    public abstract Object borrowObject() throws Exception;
+    public abstract void returnObject(Object obj) throws Exception;
+    public abstract void invalidateObject(Object obj) throws Exception;
+
+    /**
+     * Not supported in this base implementation.
+     * @return a negative value.
+     */
+    public int getNumIdle() throws UnsupportedOperationException {
+        return -1;
+    }
+
+    /**
+     * Not supported in this base implementation.
+     * @return a negative value.
+     */
+    public int getNumActive() throws UnsupportedOperationException {
+        return -1;
+    }
+
+    /**
+     * Not supported in this base implementation.
+     */
+    public void clear() throws Exception, UnsupportedOperationException {
+        throw new UnsupportedOperationException();
+    }
+
+    /**
+     * Not supported in this base implementation.
+     * Always throws an {@link UnsupportedOperationException},
+     * subclasses should override this behavior.
+     */
+    public void addObject() throws Exception, UnsupportedOperationException {
+        throw new UnsupportedOperationException();
+    }
+
+    /**
+     * Close this pool.
+     * This affects the behavior of <code>isClosed</code> and <code>assertOpen</code>.
+     */
+    public void close() throws Exception {
+        closed = true;
+    }
+
+    /**
+     * Not supported in this base implementation.
+     * Always throws an {@link UnsupportedOperationException},
+     * subclasses should override this behavior.
+     */
+    public void setFactory(PoolableObjectFactory factory) throws IllegalStateException, UnsupportedOperationException {
+        throw new UnsupportedOperationException();
+    }
+
+    /**
+     * Has this pool instance been closed.
+     * @return <code>true</code> when this pool has been closed.
+     */
+    protected final boolean isClosed() {
+        return closed;
+    }
+
+    /**
+     * Throws an <code>IllegalStateException</code> when this pool has been closed.
+     * @throws IllegalStateException when this pool has been closed.
+     * @see #isClosed()
+     */
+    protected final void assertOpen() throws IllegalStateException {
+        if(isClosed()) {
+            throw new IllegalStateException("Pool not open");
+        }
+    }
+    
+    private volatile boolean closed = false;
+}