org.apache.commons.lang.exception
Interface Nestable
- NestableError, NestableException, NestableRuntimeException, NotImplementedException, SerializationException, UnhandledException
public interface Nestable
An interface to be implemented by
Throwable
extensions which would like to be able to nest root exceptions
inside themselves.
$Id: Nestable.java 161243 2005-04-14 04:30:28Z ggregory $ Throwable | getCause()- Returns the reference to the exception or error that caused the
exception implementing the
Nestable to be thrown.
|
String | getMessage()- Returns the error message of this and any nested
Throwable.
|
String | getMessage(int index)- Returns the error message of the
Throwable in the chain
of Throwables at the specified index, numbered from 0.
|
String[] | getMessages()- Returns the error message of this and any nested
Throwables
in an array of Strings, one element for each message.
|
Throwable | getThrowable(int index)- Returns the
Throwable in the chain of
Throwables at the specified index, numbered from 0.
|
int | getThrowableCount()- Returns the number of nested
Throwables represented by
this Nestable, including this Nestable.
|
Throwable[] | getThrowables()- Returns this
Nestable and any nested Throwables
in an array of Throwables, one element for each
Throwable.
|
int | indexOfThrowable(Class type)- Returns the index, numbered from 0, of the first occurrence of the
specified type, or a subclass, in the chain of
Throwables.
|
int | indexOfThrowable(Class type, int fromIndex)- Returns the index, numbered from 0, of the first
Throwable
that matches the specified type, or a subclass, in the chain of Throwables
with an index greater than or equal to the specified index.
|
void | printPartialStackTrace(PrintWriter out)- Prints the stack trace for this exception only--root cause not
included--using the provided writer.
|
void | printStackTrace(PrintStream out)- Prints the stack trace of this exception to the specified print
stream.
|
void | printStackTrace(PrintWriter out)- Prints the stack trace of this exception to the specified print
writer.
|
getCause
public Throwable getCause()
Returns the reference to the exception or error that caused the
exception implementing the Nestable to be thrown.
- throwable that caused the original exception
getMessage
public String getMessage()
Returns the error message of this and any nested
Throwable.
getMessage
public String getMessage(int index)
Returns the error message of the Throwable in the chain
of Throwables at the specified index, numbered from 0.
index - the index of the Throwable in the chain of
Throwables
- the error message, or null if the
Throwable at the
specified index in the chain does not contain a message
getMessages
public String[] getMessages()
Returns the error message of this and any nested
Throwables
in an array of Strings, one element for each message. Any
Throwable not containing a message is represented in the
array by a null. This has the effect of cause the length of the returned
array to be equal to the result of the
getThrowableCount()
operation.
getThrowable
public Throwable getThrowable(int index)
Returns the Throwable in the chain of
Throwables at the specified index, numbered from 0.
index - the index, numbered from 0, of the Throwable in
the chain of Throwables
getThrowableCount
public int getThrowableCount()
Returns the number of nested Throwables represented by
this Nestable, including this Nestable.
getThrowables
public Throwable[] getThrowables()
Returns this Nestable and any nested Throwables
in an array of Throwables, one element for each
Throwable.
indexOfThrowable
public int indexOfThrowable(Class type)
Returns the index, numbered from 0, of the first occurrence of the
specified type, or a subclass, in the chain of
Throwables.
The method returns -1 if the specified type is not found in the chain.
NOTE: From v2.1, we have clarified the
Nestable interface
such that this method matches subclasses.
If you want to NOT match subclasses, please use
ExceptionUtils.indexOfThrowable(Throwable,Class)
(which is avaiable in all versions of lang).
type - the type to find, subclasses match, null returns -1
- index of the first occurrence of the type in the chain, or -1 if
the type is not found
indexOfThrowable
public int indexOfThrowable(Class type,
int fromIndex) Returns the index, numbered from 0, of the first
Throwable
that matches the specified type, or a subclass, in the chain of
Throwables
with an index greater than or equal to the specified index.
The method returns -1 if the specified type is not found in the chain.
NOTE: From v2.1, we have clarified the
Nestable interface
such that this method matches subclasses.
If you want to NOT match subclasses, please use
ExceptionUtils.indexOfThrowable(Throwable,Class,int)
(which is avaiable in all versions of lang).
type - the type to find, subclasses match, null returns -1fromIndex - the index, numbered from 0, of the starting position in
the chain to be searched
- index of the first occurrence of the type in the chain, or -1 if
the type is not found
printPartialStackTrace
public void printPartialStackTrace(PrintWriter out)
Prints the stack trace for this exception only--root cause not
included--using the provided writer. Used by
NestableDelegate to write
individual stack traces to a buffer. The implementation of
this method should call
super.printStackTrace(out); in most cases.
printStackTrace
public void printStackTrace(PrintStream out)
Prints the stack trace of this exception to the specified print
stream. Includes information from the exception, if any,
which caused this exception.
out - PrintStream to use for output.
printStackTrace
public void printStackTrace(PrintWriter out)
Prints the stack trace of this exception to the specified print
writer. Includes information from the exception, if any,
which caused this exception.
out - PrintWriter to use for output.
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