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package java.sql;

/**
 * An exception  thrown as a {@code DataTruncation} exception
 * (on writes) or reported as a
 * {@code DataTruncation} warning (on reads)
 *  when a data values is unexpectedly truncated for reasons other than its having
 *  exceeded {@code MaxFieldSize}.
 *
 * <P>The SQLstate for a {@code DataTruncation} during read is {@code 01004}.
 * <P>The SQLstate for a {@code DataTruncation} during write is {@code 22001}.
 *
 * @since 1.1
 */

public class DataTruncation extends SQLWarning {

    /**
     * Creates a {@code DataTruncation} object
     * with the SQLState initialized
     * to 01004 when {@code read} is set to {@code true} and 22001
     * when {@code read} is set to {@code false},
     * the reason set to "Data truncation", the
     * vendor code set to 0, and
     * the other fields set to the given values.
     * The {@code cause} is not initialized, and may subsequently be
     * initialized by a call to the
     * {@link Throwable#initCause(java.lang.Throwable)} method.
     *
     * @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} object
     * with the SQLState initialized
     * to 01004 when {@code read} is set to {@code true} and 22001
     * when {@code read} is set to {@code false},
     * the reason set to "Data truncation", the
     * vendor code set to 0, and
     * the other fields set to the given values.
     *
     * @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}
     * (which is saved for later retrieval by the {@code getCause()} 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} and {@code read} fields should be ignored.
     *
     * @return the index of the truncated parameter or column value
     */
    public int getIndex() {
        return index;
    }

    /**
     * Indicates whether the value truncated was a parameter value or
         * a column value.
     *
     * @return {@code true} if the value truncated was a parameter;
         *         {@code false} 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} if the value was truncated when read from
         *         the database; {@code false} 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} 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} 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;

}
