org.apache.openjpa.util
Class Exceptions

java.lang.Object
  org.apache.openjpa.util.Exceptions

Direct Known Subclasses:

PersistenceExceptions

public class Exceptions
extends Object

Utility methods for externalizing and handling exceptions.

Since:

0.2.5

Author:

Marc Prud'hommeaux

Field Summary

static Throwable[]

EMPTY_THROWABLES

Constructor Summary

Exceptions()

Method Summary

static void	printNestedThrowables(ExceptionInfo e, PrintStream out) Print the stack trace of the exception's nested throwables.
static void	printNestedThrowables(ExceptionInfo e, PrintWriter out) Print the stack trace of the exception's nested throwables.
static Object	replaceFailedObject(Object ob) Convert the specified failed object into a serializable object for when we are serializing an Exception.
static Throwable[]	replaceNestedThrowables(Throwable[] nested) Convert the specified throwables into a serialzable array.
static String	toClassName(Class<?> cls)
static String	toClassNames(Collection<? extends Class<?>> classes)
static String	toString(Collection failed) Safely stringify the given objects.
static String	toString(ExceptionInfo e) Stringify the given exception.
static String	toString(Object ob) Safely stringify the given object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EMPTY_THROWABLES

public static final Throwable[] EMPTY_THROWABLES

Constructor Detail

Exceptions

public Exceptions()

Method Detail

toString

public static String toString(Object ob)

Safely stringify the given object.

toString

public static String toString(Collection failed)

Safely stringify the given objects.

toString

public static String toString(ExceptionInfo e)

Stringify the given exception.

printNestedThrowables

public static void printNestedThrowables(ExceptionInfo e,
                                         PrintStream out)

Print the stack trace of the exception's nested throwables.

printNestedThrowables

public static void printNestedThrowables(ExceptionInfo e,
                                         PrintWriter out)

Print the stack trace of the exception's nested throwables.

replaceFailedObject

public static Object replaceFailedObject(Object ob)

Convert the specified failed object into a serializable object for when we are serializing an Exception. It will try the following:

• if the object can be serialized, return the object itself
• if the object has a serializable oid, return the oid
• if the object has a non-serializable oid, return the oid's toString and the object class
• return the object's toString

Parameters:

ob - the object to convert

Returns:

some serialized representation of the object

replaceNestedThrowables

public static Throwable[] replaceNestedThrowables(Throwable[] nested)

Convert the specified throwables into a serialzable array. If any of the nested throwables cannot be serialized, they will be converted into a Exception with the original message.

toClassName

public static String toClassName(Class<?> cls)

toClassNames

public static String toClassNames(Collection<? extends Class<?>> classes)