TransactionSystemException.java

package org.theonefx.wcframework.transaction.exception;

/**
 * Exception thrown when a general transaction system error is encountered,
 * like on commit or rollback.
 *
 * @author Juergen Hoeller
 * @since 24.03.2003
 */
public class TransactionSystemException extends TransactionException {

	private static final long serialVersionUID = 6597238401881397706L;
	private Throwable applicationException;


	/**
	 * Constructor for TransactionSystemException.
	 * @param msg the detail message
	 */
	public TransactionSystemException(String msg) {
		super(msg);
	}

	/**
	 * Constructor for TransactionSystemException.
	 * @param msg the detail message
	 * @param cause the root cause from the transaction API in use
	 */
	public TransactionSystemException(String msg, Throwable cause) {
		super(msg, cause);
	}


	/**
	 * Set an application exception that was thrown before this transaction exception,
	 * preserving the original exception despite the overriding TransactionSystemException.
	 * @param ex the application exception
	 * @throws IllegalStateException if this TransactionSystemException already holds an
	 * application exception
	 */
	public void initApplicationException(Throwable ex) {
		if (this.applicationException != null) {
			throw new IllegalStateException("Already holding an application exception: " + this.applicationException);
		}
		this.applicationException = ex;
	}

	/**
	 * Return the application exception that was thrown before this transaction exception,
	 * if any.
	 * @return the application exception, or <code>null</code> if none set
	 */
	public final Throwable getApplicationException() {
		return this.applicationException;
	}

	/**
	 * Return the exception that was the first to be thrown within the failed transaction:
	 * i.e. the application exception, if any, or the TransactionSystemException's own cause.
	 * @return the original exception, or <code>null</code> if there was none
	 */
	public Throwable getOriginalException() {
		return (this.applicationException != null ? this.applicationException : getCause());
	}

	public boolean contains(Class<?> exType) {
		return super.contains(exType) || (exType != null && exType.isInstance(this.applicationException));
	}

}