git commit: WICKET-4419: added JavaSerializer that deflates on the fly

[pa...@apache.org]

Updated Branches:
  refs/heads/wicket-1.5.x 89c9dd783 -> 2573f2df8


WICKET-4419: added JavaSerializer that deflates on the fly


Project: http://git-wip-us.apache.org/repos/asf/wicket/repo
Commit: http://git-wip-us.apache.org/repos/asf/wicket/commit/2573f2df
Tree: http://git-wip-us.apache.org/repos/asf/wicket/tree/2573f2df
Diff: http://git-wip-us.apache.org/repos/asf/wicket/diff/2573f2df

Branch: refs/heads/wicket-1.5.x
Commit: 2573f2df8bf9f9ba77ddf373029d558538de6666
Parents: 89c9dd7
Author: Emond Papegaaij <em...@topicus.nl>
Authored: Mon Feb 20 17:04:32 2012 +0100
Committer: Emond Papegaaij <em...@topicus.nl>
Committed: Mon Feb 20 17:05:04 2012 +0100

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 .../serialize/java/DeflatedJavaSerializer.java     |   70 +++++++++++++++
 1 files changed, 70 insertions(+), 0 deletions(-)
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http://git-wip-us.apache.org/repos/asf/wicket/blob/2573f2df/wicket-core/src/main/java/org/apache/wicket/serialize/java/DeflatedJavaSerializer.java
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diff --git a/wicket-core/src/main/java/org/apache/wicket/serialize/java/DeflatedJavaSerializer.java b/wicket-core/src/main/java/org/apache/wicket/serialize/java/DeflatedJavaSerializer.java
new file mode 100644
index 0000000..df8416f
--- /dev/null
+++ b/wicket-core/src/main/java/org/apache/wicket/serialize/java/DeflatedJavaSerializer.java
@@ -0,0 +1,70 @@
+/*
+ * 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 org.apache.wicket.serialize.java;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.io.OutputStream;
+import java.util.zip.Deflater;
+import java.util.zip.DeflaterOutputStream;
+import java.util.zip.Inflater;
+import java.util.zip.InflaterInputStream;
+
+/**
+ * A {@link JavaSerializer} that deflates the outputstream on the fly, reducing page store size by
+ * up to a factor 8. Be advised that deflating serialized objects comes at a price of about 2-20ms
+ * per page request, depending on the size of the page and the cpu power of the machine.
+ * 
+ * <p>
+ * To use this serializer, put the following code in your application's init:
+ * 
+ * <pre>
+ * getFrameworkSettings().setSerializer(new DeflatedJavaSerializer(getApplicationKey()));
+ * </pre>
+ * 
+ * @author papegaaij
+ */
+public class DeflatedJavaSerializer extends JavaSerializer
+{
+	private static final int COMPRESS_BUF_SIZE = 4 * 1024;
+
+	/**
+	 * Construct.
+	 * 
+	 * @param applicationKey
+	 */
+	public DeflatedJavaSerializer(String applicationKey)
+	{
+		super(applicationKey);
+	}
+
+	@Override
+	protected ObjectOutputStream newObjectOutputStream(OutputStream out) throws IOException
+	{
+		return super.newObjectOutputStream(new DeflaterOutputStream(out, new Deflater(
+			Deflater.BEST_SPEED), COMPRESS_BUF_SIZE));
+	}
+
+	@Override
+	protected ObjectInputStream newObjectInputStream(InputStream in) throws IOException
+	{
+		return super.newObjectInputStream(new InflaterInputStream(in, new Inflater(),
+			COMPRESS_BUF_SIZE));
+	}
+}