org.apache.pig
Class PigException

java.lang.Object
  java.lang.Throwable
      java.lang.Exception
          java.io.IOException
              org.apache.pig.PigException

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

BackendException, FrontendException

public class PigException
extends IOException

All exceptions in Pig are encapsulated in the PigException class. Details such as the source of the error, error message, error code, etc. are contained in this class. The default values for the attributes are: errorSource = BUG errorCode = 0 retriable = false detailedMessage = null

See Also:

Serialized Form

Field Summary

static byte	BUG
protected String	detailedMessage
static byte	ERROR
protected int	errorCode
protected byte	errorSource
static byte	INPUT
protected boolean	markedAsShowToUser
static byte	REMOTE_ENVIRONMENT
protected boolean	retriable
static byte	USER_ENVIRONMENT

Constructor Summary

PigException()
Create a new PigException with null as the error message.

PigException(String message)
Create a new PigException with the specified message.

PigException(String message, int errCode)
Create a new PigException with the specified message and cause.

PigException(String message, int errCode, boolean retry)
Create a new PigException with the specified message and cause.

PigException(String message, int errCode, byte errSrc)
Create a new PigException with the specified message and cause.

PigException(String message, int errCode, byte errSrc, boolean retry)
Create a new PigException with the specified message and cause.

PigException(String message, int errCode, byte errSrc, boolean retry, String detailedMsg)
Create a new PigException with the specified message and cause.

PigException(String message, int errCode, byte errSrc, boolean retry, String detailedMsg, Throwable cause)
Create a new PigException with the specified message, error code, error source, retriable or not, detalied message for the developer and cause.

PigException(String message, int errCode, byte errSrc, Throwable cause)
Create a new PigException with the specified message and cause.

PigException(String message, int errCode, Throwable cause)
Create a new PigException with the specified message and cause.

PigException(String message, Throwable cause)
Create a new PigException with the specified message and cause.

PigException(Throwable cause)
Create a new PigException with the specified cause.

Method Summary

static byte	determineErrorSource(int errCode) A static method to determine the error source given the error code
String	getDetailedMessage() Returns the detailed message used by developers for debugging
int	getErrorCode() Returns the error code of the exception
byte	getErrorSource() Returns the error source of the exception.
boolean	getMarkedAsShowToUser() Check if this PigException is marked as the ones whose message is to be displayed to the user.
static boolean	isBug(byte errSource) A static method to query if an error source is due to a bug or not.
static boolean	isInput(byte errSource) A static method to query if an error source is due to an input or not.
static boolean	isRemoteEnvironment(byte errSource) A static method to query if an error source is due to the remote environment or not.
static boolean	isUserEnvironment(byte errSource) A static method to query if an error source is due to the user environment or not.
boolean	retriable() Checks if the exception is retriable.
void	setDetailedMessage(String detailMsg) Set the detailed message of the exception
void	setErrorCode(int code) Set the error code of the exception
void	setErrorSource(byte src) Set the error source of the exception
void	setMarkedAsShowToUser(boolean showToUser) Mark this exception as a good candidate for showing its message to the pig user
void	setRetriable(boolean retry) Set the retriable attribute of the exception
String	toString() Returns a short description of this throwable.

Methods inherited from class java.lang.Throwable

fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace

Methods inherited from class java.lang.Object

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

Field Detail

INPUT

public static final byte INPUT

See Also:

Constant Field Values

BUG

public static final byte BUG

See Also:

Constant Field Values

USER_ENVIRONMENT

public static final byte USER_ENVIRONMENT

See Also:

Constant Field Values

REMOTE_ENVIRONMENT

public static final byte REMOTE_ENVIRONMENT

See Also:

Constant Field Values

ERROR

public static final byte ERROR

See Also:

Constant Field Values

errorCode

protected int errorCode

errorSource

protected byte errorSource

retriable

protected boolean retriable

detailedMessage

protected String detailedMessage

markedAsShowToUser

protected boolean markedAsShowToUser

Constructor Detail

PigException

public PigException()

Create a new PigException with null as the error message.

PigException

public PigException(String message)

Create a new PigException with the specified message.

Parameters:

message - - The error message (which is saved for later retrieval by the Throwable.getMessage() method) shown to the user

PigException

public PigException(Throwable cause)

Create a new PigException with the specified cause.

Parameters:

cause - - The cause (which is saved for later retrieval by the Throwable.getCause() method) indicating the source of this exception. A null value is permitted, and indicates that the cause is nonexistent or unknown.

PigException

public PigException(String message,
                    Throwable cause)

Create a new PigException with the specified message and cause.

Parameters:

message - - The error message (which is saved for later retrieval by the Throwable.getMessage() method) shown to the user

cause - - The cause (which is saved for later retrieval by the Throwable.getCause() method) indicating the source of this exception. A null value is permitted, and indicates that the cause is nonexistent or unknown.

PigException

public PigException(String message,
                    int errCode)

Create a new PigException with the specified message and cause.

Parameters:

message - - The error message (which is saved for later retrieval by the Throwable.getMessage() method) shown to the user

errCode - - The error code shown to the user

PigException

public PigException(String message,
                    int errCode,
                    Throwable cause)

Create a new PigException with the specified message and cause.

Parameters:

message - - The error message (which is saved for later retrieval by the Throwable.getMessage() method) shown to the user

errCode - - The error code shown to the user

cause - - The cause (which is saved for later retrieval by the Throwable.getCause() method) indicating the source of this exception. A null value is permitted, and indicates that the cause is nonexistent or unknown.

PigException

public PigException(String message,
                    int errCode,
                    byte errSrc)

Create a new PigException with the specified message and cause.

Parameters:

message - - The error message (which is saved for later retrieval by the Throwable.getMessage() method) shown to the user

errCode - - The error code shown to the user

errSrc - - The error source

PigException

public PigException(String message,
                    int errCode,
                    byte errSrc,
                    Throwable cause)

Create a new PigException with the specified message and cause.

Parameters:

message - - The error message (which is saved for later retrieval by the Throwable.getMessage() method) shown to the user

errCode - - The error code shown to the user

errSrc - - The error source

cause - - The cause (which is saved for later retrieval by the Throwable.getCause() method) indicating the source of this exception. A null value is permitted, and indicates that the cause is nonexistent or unknown.

PigException

public PigException(String message,
                    int errCode,
                    boolean retry)

Create a new PigException with the specified message and cause.

Parameters:

message - - The error message (which is saved for later retrieval by the Throwable.getMessage() method) shown to the user

errCode - - The error code shown to the user

retry - - If the exception is retriable or not

PigException

public PigException(String message,
                    int errCode,
                    byte errSrc,
                    boolean retry)

Create a new PigException with the specified message and cause.

Parameters:

message - - The error message (which is saved for later retrieval by the Throwable.getMessage() method) shown to the user

errCode - - The error code shown to the user

errSrc - - The error source

retry - - If the exception is retriable or not

PigException

public PigException(String message,
                    int errCode,
                    byte errSrc,
                    boolean retry,
                    String detailedMsg)

Create a new PigException with the specified message and cause.

Parameters:

message - - The error message (which is saved for later retrieval by the Throwable.getMessage() method) shown to the user

errCode - - The error code shown to the user

errSrc - - The error source

retry - - If the exception is retriable or not

detailedMsg - - The detailed message shown to the developer

PigException

public PigException(String message,
                    int errCode,
                    byte errSrc,
                    boolean retry,
                    String detailedMsg,
                    Throwable cause)

Create a new PigException with the specified message, error code, error source, retriable or not, detalied message for the developer and cause.

Parameters:

message - - The error message (which is saved for later retrieval by the Throwable.getMessage() method) shown to the user

errCode - - The error code shown to the user

errSrc - - The error source

retry - - If the exception is retriable or not

detailedMsg - - The detailed message shown to the developer

cause - - The cause (which is saved for later retrieval by the Throwable.getCause() method) indicating the source of this exception. A null value is permitted, and indicates that the cause is nonexistent or unknown.

Method Detail

isInput

public static boolean isInput(byte errSource)

A static method to query if an error source is due to an input or not.

Parameters:

errSource - - byte that indicates the error source

Returns:

true if the error source is an input; false otherwise

isBug

public static boolean isBug(byte errSource)

A static method to query if an error source is due to a bug or not.

Parameters:

errSource - - byte that indicates the error source

Returns:

true if the error source is a bug; false otherwise

isUserEnvironment

public static boolean isUserEnvironment(byte errSource)

A static method to query if an error source is due to the user environment or not.

Parameters:

errSource - - byte that indicates the error source

Returns:

true if the error source is due to the user environment; false otherwise

isRemoteEnvironment

public static boolean isRemoteEnvironment(byte errSource)

A static method to query if an error source is due to the remote environment or not.

Parameters:

errSource - - byte that indicates the error source

Returns:

true if the error source is due to the remote environment; false otherwise

determineErrorSource

public static byte determineErrorSource(int errCode)

A static method to determine the error source given the error code

Parameters:

errCode - - integer error code

Returns:

byte that indicates the error source

retriable

public boolean retriable()

Checks if the exception is retriable.

Returns:

if the exception is retriable or not

setRetriable

public void setRetriable(boolean retry)

Set the retriable attribute of the exception

Parameters:

retry - - true if retriable; false otherwise

getErrorSource

public byte getErrorSource()

Returns the error source of the exception. Can be more than one source.

Returns:

error sources represented as a byte

setErrorSource

public void setErrorSource(byte src)

Set the error source of the exception

Parameters:

src - - byte representing the error sources

getErrorCode

public int getErrorCode()

Returns the error code of the exception

Returns:

error code of the exception

setErrorCode

public void setErrorCode(int code)

Set the error code of the exception

Parameters:

code - - error code

getDetailedMessage

public String getDetailedMessage()

Returns the detailed message used by developers for debugging

Returns:

detailed message

setDetailedMessage

public void setDetailedMessage(String detailMsg)

Set the detailed message of the exception

Parameters:

detailMsg - - detailed message to be used by developers

getMarkedAsShowToUser

public boolean getMarkedAsShowToUser()

Check if this PigException is marked as the ones whose message is to be displayed to the user. This can be used to indicate if the corresponding error message is a good candidate for displaying to the end user, instead of drilling down the stack trace further.

Returns:

true if this pig exception is marked as appropriate to be displayed to the user

setMarkedAsShowToUser

public void setMarkedAsShowToUser(boolean showToUser)

Mark this exception as a good candidate for showing its message to the pig user

toString

public String toString()

Returns a short description of this throwable. The result is the concatenation of:

• the name of the class of this object
• ": " (a colon and a space)
• "ERROR " (the string ERROR followed by a a space)
• the result of invoking this object's getErrorCode() method
• ": " (a colon and a space)
• the result of invoking getLocalizedMessage method

If getLocalizedMessage returns null, then just the class name is returned.

Overrides:

toString in class Throwable

Returns:

a string representation of this throwable.