/*
 * @(#)DataTruncation.java	1.27 05/12/22
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package java.sql;

/**
 * An exception  thrown as a <code>DataTruncation</code> exception
 * (on writes) or reported as a 
 * <code>DataTruncation</code> warning (on reads)
 *  when a data values is unexpectedly truncated for reasons other than its having
 *  execeeded <code>MaxFieldSize</code>.
 *
 * <P>The SQLstate for a <code>DataTruncation</code> during read is <code>01004</code>.
 * <P>The SQLstate for a <code>DataTruncation</code> during write is <code>22001</code>.
 */

public class DataTruncation extends SQLWarning {

    /**
     * Creates a <code>DataTruncation</code> object
     * with the SQLState initialized
     * to 01004 when <code>read</code> is set to <code>true</code> and 22001
     * when <code>read</code> is set to <code>false</code>, 
     * the reason set to "Data truncation", the
     * vendor code set to 0, and
     * the other fields set to the given values.
     * The <code>cause</code> is not initialized, and may subsequently be 
     * initialized by a call to the 
     * {@link Throwable#initCause(java.lang.Throwable)} method.
     * <p>
     *
     * @param index The index of the parameter or column value
     * @param parameter true if a parameter value was truncated
     * @param read true if a read was truncated
     * @param dataSize the original size of the data
     * @param transferSize the size after truncation
     */
    public DataTruncation(int index, boolean parameter,
			  boolean read, int dataSize,
			  int transferSize) {
	super("Data truncation", read == true?"01004":"22001");
	this.index = index;
	this.parameter = parameter;
	this.read = read;
	this.dataSize = dataSize;
	this.transferSize = transferSize;
        
    }

    /**
     * Creates a <code>DataTruncation</code> object
     * with the SQLState initialized
     * to 01004 when <code>read</code> is set to <code>true</code> and 22001
     * when <code>read</code> is set to <code>false</code>, 
     * the reason set to "Data truncation", the
     * vendor code set to 0, and
     * the other fields set to the given values.
     * <p>
     *
     * @param index The index of the parameter or column value
     * @param parameter true if a parameter value was truncated
     * @param read true if a read was truncated
     * @param dataSize the original size of the data
     * @param transferSize the size after truncation
     * @param cause the underlying reason for this <code>DataTruncation</code> 
     * (which is saved for later retrieval by the <code>getCause()</code> method);
     * may be null indicating the cause is non-existent or unknown.
     *
     * @since 1.6
     */
    public DataTruncation(int index, boolean parameter,
			  boolean read, int dataSize,
			  int transferSize, Throwable cause) {
	super("Data truncation", read == true?"01004":"22001",cause);
	this.index = index;
	this.parameter = parameter;
	this.read = read;
	this.dataSize = dataSize;
	this.transferSize = transferSize;
    }

    /**
     * Retrieves the index of the column or parameter that was truncated.
     *
     * <P>This may be -1 if the column or parameter index is unknown, in 
     * which case the <code>parameter</code> and <code>read</code> fields should be ignored.
     *
     * @return the index of the truncated paramter or column value
     */
    public int getIndex() {
	return index;
    }

    /**
     * Indicates whether the value truncated was a parameter value or
	 * a column value.
     *
     * @return <code>true</code> if the value truncated was a parameter;
	 *         <code>false</code> if it was a column value
     */
    public boolean getParameter() {
	return parameter;
    }

    /**
     * Indicates whether or not the value was truncated on a read.
     *
     * @return <code>true</code> if the value was truncated when read from
	 *         the database; <code>false</code> if the data was truncated on a write
     */
    public boolean getRead() {
	return read;
    }

    /**
     * Gets the number of bytes of data that should have been transferred.
     * This number may be approximate if data conversions were being
     * performed.  The value may be <code>-1</code> if the size is unknown.
     *
     * @return the number of bytes of data that should have been transferred
     */
    public int getDataSize() {
	return dataSize;
    }

    /**
     * Gets the number of bytes of data actually transferred.
     * The value may be <code>-1</code> if the size is unknown.
     *
     * @return the number of bytes of data actually transferred
     */
    public int getTransferSize() {
	return transferSize;
    }

	/**
   	* @serial
	*/
    private int index;

	/**
	* @serial
	*/
    private boolean parameter;

	/**
	* @serial
	*/
    private boolean read;	

	/**
	* @serial
	*/
    private int dataSize;

	/**
	* @serial
	*/
    private int transferSize;

    /**
     * @serial
     */
    private static final long serialVersionUID = 6464298989504059473L;

}