Here is another try with a better subject. Also changed the serialize
method to return null instead of throwing an exception, so it behaves
similarly to the deserialize method. Though I think both methods
throwing an exception would be better.
previous message:
Here is a patch to add a serialize method to Objects to complement the
deserialize method. Also included are unit tests for Objects.
john mcnally
package org.apache.commons.lang;
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
* "Apache Turbine" must not be used to endorse or promote products
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* 5. Products derived from this software may not be called "Apache",
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* ====================================================================
*
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* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
import java.util.HashMap;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
/**
* Unit tests {@link org.apache.commons.lang.Objects}.
*
* @author <a href="mailto:[EMAIL PROTECTED]";>John McNally</a>
*/
public class ObjectsTest extends TestCase
{
private static final String FOO = "foo";
private static final String BAR = "bar";
private static final String MAP_ERROR =
"Map did not serialize and deserialize to equivalent map";
public ObjectsTest(String name)
{
super(name);
}
public void testIsNull()
{
Object o = FOO;
Object dflt = BAR;
assertEquals("dflt was not returned when o was null", dflt,
Objects.isNull(null, dflt));
assertEquals("dflt was returned when o was not null", o,
Objects.isNull(o, dflt));
}
public void testDeserialize()
{
serializeDeserialize();
}
public void testSerialize()
{
serializeDeserialize();
}
private void serializeDeserialize()
{
HashMap original = new HashMap();
original.put(FOO, BAR);
original.put(BAR, FOO);
byte[] ser = Objects.serialize(original);
HashMap deser = (HashMap)Objects.deserialize(ser);
assertEquals(MAP_ERROR, original.get(FOO), deser.get(FOO));
assertEquals(MAP_ERROR, original.get(BAR), deser.get(BAR));
}
public void testEquals()
{
assertTrue("Objects.equals(null, null) returned false",
Objects.equals(null, null));
assertTrue("Objects.equals(\"foo\", null) returned true",
!Objects.equals(FOO, null));
assertTrue("Objects.equals(null, \"bar\") returned true",
!Objects.equals(null, BAR));
assertTrue("Objects.equals(\"foo\", \"bar\") returned true",
!Objects.equals(FOO, BAR));
assertTrue("Objects.equals(\"foo\", \"foo\") returned false",
Objects.equals(FOO, FOO));
}
}
? build.properties
? lang.diff
? target
? src/java/org/apache/commons/lang/Objects.patch
? src/test/org/apache/commons/lang/ObjectsTest.java
Index: build.xml
===================================================================
RCS file: /home/cvspublic/jakarta-commons-sandbox/lang/build.xml,v
retrieving revision 1.4
diff -u -r1.4 build.xml
--- build.xml 9 Mar 2002 17:11:38 -0000 1.4
+++ build.xml 11 Mar 2002 02:17:02 -0000
@@ -224,6 +224,7 @@
<target name="test" depends="compile.tests,
test.strings,
+ test.objects,
test.numberRange,
test.exception
"
@@ -236,6 +237,15 @@
<java classname="${test.runner}" fork="yes"
failonerror="${test.failonerror}">
<arg value="org.apache.commons.lang.StringsTest"/>
+ <classpath refid="test.classpath"/>
+ </java>
+ </target>
+
+ <target name="test.objects" depends="compile.tests">
+ <echo message="Running Objects tests ..."/>
+ <java classname="${test.runner}" fork="yes"
+ failonerror="${test.failonerror}">
+ <arg value="org.apache.commons.lang.ObjectsTest"/>
<classpath refid="test.classpath"/>
</java>
</target>
Index: src/java/org/apache/commons/lang/Objects.java
===================================================================
RCS file:
/home/cvspublic/jakarta-commons-sandbox/lang/src/java/org/apache/commons/lang/Objects.java,v
retrieving revision 1.1
diff -u -r1.1 Objects.java
--- src/java/org/apache/commons/lang/Objects.java 22 Feb 2002 05:57:15 -0000
1.1
+++ src/java/org/apache/commons/lang/Objects.java 11 Mar 2002 02:17:03 -0000
@@ -54,11 +54,14 @@
* <http://www.apache.org/>.
*/
-import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
+import java.io.Serializable;
+import java.io.ByteArrayOutputStream;
+import java.io.ObjectOutputStream;
+import java.io.IOException;
/**
* Common <code>Object</code> manipulation routines.
@@ -121,6 +124,45 @@
}
}
return object;
+ }
+
+
+ /**
+ * Converts a object to a byte array for storage/serialization.
+ *
+ * @param obj The Serializable to convert.
+ * @return A byte[] with the converted Serializable.
+ */
+ public static byte[] serialize(Serializable obj)
+ {
+ byte[] byteArray = null;
+ ByteArrayOutputStream baos = null;
+ ObjectOutputStream out = null;
+ try
+ {
+ // These objects are closed in the finally.
+ baos = new ByteArrayOutputStream();
+ out = new ObjectOutputStream(baos);
+
+ out.writeObject(obj);
+ byteArray = baos.toByteArray();
+ }
+ catch (IOException e)
+ {
+ byteArray = null;
+ }
+ finally
+ {
+ try
+ {
+ out.close();
+ }
+ catch (Exception e)
+ {
+ // ignore;
+ }
+ }
+ return byteArray;
}
/**
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