/* SQLData.java -- Custom mapping for a user defined datatype
   Copyright (C) 1999, 2000 Free Software Foundation, Inc.

This file is part of GNU Classpath.

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02111-1307 USA.

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permission to link this library with independent modules to produce an
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package java.sql;

/**
  * This interface is used for mapping SQL data to user defined datatypes.
  *
  * @author Aaron M. Renn (arenn@urbanophile.com)
  */
public interface SQLData
{

/**
  * This method returns the user defined datatype name for this object.
  *
  * @return The user defined data type name for this object.
  *
  * @exception SQLException If an error occurs.
  */
public abstract String
getSQLTypeName() throws SQLException;

/*************************************************************************/

/**
  * This method populates the data in the object from the specified stream.
  *
  * @param stream The stream to read the data from.
  * @param name The data type name of the data on the stream.
  *
  * @exception SQLException If an error occurs.
  */
public abstract void
readSQL(SQLInput stream, String name) throws SQLException;

/*************************************************************************/

/**
  * This method writes the data in this object to the specified stream.
  *
  * @param stream The stream to write the data to.
  *
  * @exception SQLException If an error occurs.
  */
public abstract void
writeSQL(SQLOutput stream) throws SQLException;

} // interface SQLData