chemaxon.util

Class ErrorHandler

java.lang.Object

chemaxon.util.ErrorHandler

@PublicAPI
public abstract class ErrorHandler
extends java.lang.Object

An abstract ancestor of JavaBeans that enable exception handling in different environments.

Inheritors of this class can be used as an ActiveX components. To avoid problems caused by exceptions in environments that can not handle them, exceptions can be caught and stored using ErrorHandler. This feature is ususally applied in methods with names like <method name>_...NE (where NE means "no exception").

It is also applicable in multithreading environments. Using this class as ancestor, exceptions caught in another thread can be retrieved by overloading getException.

Author:

Ferenc Csizmadia

Field Summary

Fields

Modifier and Type	Field and Description
static int	CLASS_NOT_FOUND_ERROR
static int	DATABASE_SEARCH_ERROR
protected java.lang.Throwable	exception
static int	ILLEGAL_ACCESS_ERROR
static int	INSTANTIATION_ERROR
static int	IO_ERROR
static int	MAX_SEARCH_FREQUENCY_EXCEEDED_ERROR
static int	MOL_FORMAT_ERROR
static int	NO_ERROR
static int	SQL_ERROR
static int	UNIDENTIFIED_ERROR

Constructor Summary

Constructors

Constructor and Description
ErrorHandler()

Method Summary

Modifier and Type	Method and Description
void	checkError() Throws the exception stored in the object.
void	checkException() Throws the exception stored in the object.
int	getError() Getter for property error.
java.lang.String	getErrorMessage() Getter for property errorMessage.
java.lang.Throwable	getException() Getter for property exception.
java.lang.String	getStackTrace() Getter for property stackTrace.

Methods inherited from class java.lang.Object

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

Field Detail

NO_ERROR

public static final int NO_ERROR

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Constant Field Values

UNIDENTIFIED_ERROR

public static final int UNIDENTIFIED_ERROR

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Constant Field Values

MAX_SEARCH_FREQUENCY_EXCEEDED_ERROR

public static final int MAX_SEARCH_FREQUENCY_EXCEEDED_ERROR

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Constant Field Values

DATABASE_SEARCH_ERROR

public static final int DATABASE_SEARCH_ERROR

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Constant Field Values

MOL_FORMAT_ERROR

public static final int MOL_FORMAT_ERROR

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Constant Field Values

IO_ERROR

public static final int IO_ERROR

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Constant Field Values

CLASS_NOT_FOUND_ERROR

public static final int CLASS_NOT_FOUND_ERROR

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Constant Field Values

INSTANTIATION_ERROR

public static final int INSTANTIATION_ERROR

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Constant Field Values

ILLEGAL_ACCESS_ERROR

public static final int ILLEGAL_ACCESS_ERROR

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Constant Field Values

SQL_ERROR

public static final int SQL_ERROR

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Constant Field Values

exception

protected volatile java.lang.Throwable exception

Constructor Detail

ErrorHandler

public ErrorHandler()

Method Detail

getException

public java.lang.Throwable getException()

Getter for property exception.

Returns:

Value of property exception that is stored by the class.

getError

public int getError()

Getter for property error.

Returns:

Value of property error.

getErrorMessage

public java.lang.String getErrorMessage()

Getter for property errorMessage.

Returns:

Value of property errorMessage.

getStackTrace

public java.lang.String getStackTrace()

Getter for property stackTrace.

Returns:

Value of property stackTrace.

checkError

public void checkError()
                throws java.lang.Throwable

Throws the exception stored in the object.

Throws:

java.lang.Throwable - the exception stored

checkException

public void checkException()
                    throws java.lang.Exception

Throws the exception stored in the object. Needed because Tomcat errorpages don't handle errors of type Throwable that are not inheritors of Exception.

Throws:

java.lang.Exception - the exception stored, boxed as Exception