Ok, this happened again...
For some unknown reason the list strips my attachments if they are not
with txt extension...
I'm using Outlook XP (and except for the crashing I haven't seen any
problems with it)...
Here is the attachment again..
-- dimiter
> -----Original Message-----
> From: Dimiter Dimitrov [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, February 04, 2003 8:42 PM
> To: 'Jakarta Commons Developers List'
> Subject: [beanutils][lang] how to serialize/deserialize
> Methods/PropertyDescriptors
>
>
> Hi all,
>
> Currently I'm in process of replacing most of our util
> classes with Jakarta-Commons.
>
> But I can't find a way to serialize Method instance. I have
> looked in commons.lang and commons.beanutils packages.
>
> I'm attaching a possible solution. Don't know if it's not out
> of scope though..
>
> cheers,
> Dimiter
>
>
import java.io.ObjectOutput;
import java.io.IOException;
import java.io.ObjectInput;
import java.lang.reflect.Method;
import java.beans.PropertyDescriptor;
public class SerializationUtils {
/**
* @param method can be null
*
* @serialData declaringClassName:Object
* @serialData methodName:UTF string
* @serialData methodParameterTypes:Object[]
*/
public static void writeMethod(ObjectOutput out, Method method) throws IOException
{
if (method==null) {
out.writeObject(null);
return;
}
out.writeObject(method.getDeclaringClass().getName());
out.writeUTF(method.getName());
Class[] paramTypes = method.getParameterTypes();
String[] paramTypeNames = new String[paramTypes.length];
for (int i = 0; i < paramTypeNames.length; i++) {
paramTypeNames[i] = paramTypes[i].getName();
}
out.writeObject(paramTypeNames);
}
public static Method readMethod(ObjectInput in) throws IOException {
try {
final String className = (String) in.readObject();
if (className == null) return null;
Class cls = Class.forName(className);
final String methodName = in.readUTF();
final String[] paramTypeNames = (String[]) in.readObject();
final Class[] paramTypes = new Class[paramTypeNames.length];
for (int i = 0; i < paramTypeNames.length; i++) {
paramTypes[i] = typeForName(paramTypeNames[i]);
}
return cls.getMethod(methodName, paramTypes);
} catch (IOException e) {
throw e;
} catch (Exception e) {
throw new IOException("Method deserialization failed: " + e);
}
}
/**
* @serialData propertyName:UTF string
* @serialData getter:Method
* @serialData setter:Method
*/
public static void writePropertyDescriptorMethods(ObjectOutput out,
PropertyDescriptor pd) throws IOException {
out.writeUTF(pd.getName());
writeMethod(out, pd.getReadMethod());
writeMethod(out, pd.getWriteMethod());
}
public static PropertyDescriptor readPropertyDescriptorMethods(ObjectInput in)
throws IOException {
String propertyName = in.readUTF();
try {
Method getter = readMethod(in);
Method setter = readMethod(in);
return new PropertyDescriptor(propertyName, getter, setter);
} catch (IOException e) {
throw e;
} catch (Exception e) {
throw new IOException("Property deserialization failed: "+e);
}
}
/**
* @serialData propertyName:UTF string
* @serialData beanClass:Class
*/
public static void writePropertyDescriptorBean(ObjectOutput out,
PropertyDescriptor pd, Class beanClass) throws IOException {
out.writeUTF(pd.getName());
out.writeObject(beanClass);
}
public static PropertyDescriptor readPropertyDescriptorBean(ObjectInput in) throws
IOException {
try {
String propertyName = in.readUTF();
Class beanClass = (Class) in.readObject();
return new PropertyDescriptor(propertyName, beanClass);
} catch (IOException e) {
throw e;
} catch (Exception e) {
throw new IOException("Property deserialization failed: " + e);
}
}
public static Class primitive2refType(Class type) {
if (type.equals(byte.class)) return Byte.class;
if (type.equals(short.class)) return Short.class;
if (type.equals(int.class)) return Integer.class;
if (type.equals(long.class)) return Long.class;
if (type.equals(char.class)) return Character.class;
if (type.equals(float.class)) return Float.class;
if (type.equals(double.class)) return Double.class;
if (type.equals(boolean.class)) return Boolean.class;
if (type.equals(void.class)) return Void.class;
return type;
}
public static Class ref2primitiveType(Class type) {
if (type.equals(Byte.class)) return byte.class;
if (type.equals(Short.class)) return short.class;
if (type.equals(Integer.class)) return int.class;
if (type.equals(Long.class)) return long.class;
if (type.equals(Character.class)) return char.class;
if (type.equals(Float.class)) return float.class;
if (type.equals(Double.class)) return double.class;
if (type.equals(Boolean.class)) return boolean.class;
if (type.equals(Void.class)) return void.class;
return type;
}
public static Class typeForName(String type) throws ClassNotFoundException {
if (type.equals("byte")) return byte.class;
if (type.equals("short")) return short.class;
if (type.equals("int")) return int.class;
if (type.equals("long")) return long.class;
if (type.equals("char")) return char.class;
if (type.equals("float")) return float.class;
if (type.equals("double")) return double.class;
if (type.equals("boolean")) return boolean.class;
if (type.equals("void")) return void.class;
return Class.forName(type);
}
}
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