package org.hibernate.bytecode.javassist;

/**
 * An exception thrown while generating a bulk accessor.
 * 
 * @author Muga Nishizawa
 * @author modified by Shigeru Chiba
 */
public class BulkAccessorException extends RuntimeException {
    private Throwable myCause;

    /**
     * Gets the cause of this throwable.
     * It is for JDK 1.3 compatibility.
     */
    public Throwable getCause() {
        return (myCause == this ? null : myCause);
    }

    /**
     * Initializes the cause of this throwable.
     * It is for JDK 1.3 compatibility.
     */
    public synchronized Throwable initCause(Throwable cause) {
        myCause = cause;
        return this;
    }

    private int index;

    /**
     * Constructs an exception.
     */
    public BulkAccessorException(String message) {
        super(message);
        index = -1;
        initCause(null);
    }

    /**
     * Constructs an exception.
     *
     * @param index     the index of the property that causes an exception.
     */
    public BulkAccessorException(String message, int index) {
        this(message + ": " + index);
        this.index = index;
    }

    /**
     * Constructs an exception.
     */
    public BulkAccessorException(String message, Throwable cause) {
        super(message);
        index = -1;
        initCause(cause);
    }

    /**
     * Constructs an exception.
     *
     * @param index     the index of the property that causes an exception.
     */
    public BulkAccessorException(Throwable cause, int index) {
        this("Property " + index);
        this.index = index;
        initCause(cause);
    }

    /**
     * Returns the index of the property that causes this exception.
     *
     * @return -1 if the index is not specified.
     */
    public int getIndex() {
        return this.index;
    }
}