org.tentackle.common

Class ExceptionHelper

java.lang.Object

org.tentackle.common.ExceptionHelper

public final class ExceptionHelper
extends Object

Helper methods dealing with exceptions.

Author:

harald

Method Summary

Modifier and Type	Method and Description
static String	concatenateMessages(Throwable headOfChain) Concatenates the messages of an exception chain.
static Throwable	extractException(boolean first, Throwable headOfChain, Class<? extends Throwable>... types) Extracts any of the given exception types from an exception chain.
static <T extends Throwable> T	extractException(Class<T> type, boolean first, Throwable headOfChain) Extracts the given exception type from an exception chain.
static String	getStackTraceAsString(Throwable cause) Returns the stacktrace of a given exception as a string.

Methods inherited from class java.lang.Object

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

Method Detail

extractException

public static <T extends Throwable> T extractException(Class<T> type,
                                                       boolean first,
                                                       Throwable headOfChain)

Extracts the given exception type from an exception chain.

Type Parameters:

T - the exception type to search for

Parameters:

type - the exception class to search for

first - true if finds the first, else the last in chain

headOfChain - the head of chained exceptions, may be null

Returns:

the exception, null if none

extractException

public static Throwable extractException(boolean first,
                                         Throwable headOfChain,
                                         Class<? extends Throwable>... types)

Extracts any of the given exception types from an exception chain.

Parameters:

first - true if finds the first, else the last in chain

headOfChain - the head of chained exceptions, may be null

types - the exception classes to search for

Returns:

the exception, null if none

concatenateMessages

public static String concatenateMessages(Throwable headOfChain)

Concatenates the messages of an exception chain.

Parameters:

headOfChain - the head of chained exceptions, may be null

Returns:

the message string

getStackTraceAsString

public static String getStackTraceAsString(Throwable cause)

Returns the stacktrace of a given exception as a string.

Parameters:

cause - the exception

Returns:

the stacktrace as a printable string