344 lines
9.8 KiB
Java
344 lines
9.8 KiB
Java
/* SQLInput.java -- Read SQL values from a stream
|
|
Copyright (C) 1999, 2000 Free Software Foundation, Inc.
|
|
|
|
This file is part of GNU Classpath.
|
|
|
|
GNU Classpath is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
GNU Classpath is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU Classpath; see the file COPYING. If not, write to the
|
|
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA.
|
|
|
|
Linking this library statically or dynamically with other modules is
|
|
making a combined work based on this library. Thus, the terms and
|
|
conditions of the GNU General Public License cover the whole
|
|
combination.
|
|
|
|
As a special exception, the copyright holders of this library give you
|
|
permission to link this library with independent modules to produce an
|
|
executable, regardless of the license terms of these independent
|
|
modules, and to copy and distribute the resulting executable under
|
|
terms of your choice, provided that you also meet, for each linked
|
|
independent module, the terms and conditions of the license of that
|
|
module. An independent module is a module which is not derived from
|
|
or based on this library. If you modify this library, you may extend
|
|
this exception to your version of the library, but you are not
|
|
obligated to do so. If you do not wish to do so, delete this
|
|
exception statement from your version. */
|
|
|
|
|
|
package java.sql;
|
|
|
|
import java.io.InputStream;
|
|
import java.io.Reader;
|
|
import java.math.BigDecimal;
|
|
|
|
/**
|
|
* This interface provides methods for reading values from a stream
|
|
* that is connected to a SQL structured or distinct type. It is used
|
|
* for custom mapping of user defined data types.
|
|
*
|
|
* @author Aaron M. Renn (arenn@urbanophile.com)
|
|
*/
|
|
public interface SQLInput
|
|
{
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java
|
|
* <code>String</code>.
|
|
*
|
|
* @return The value read from the stream as a <code>String</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract String
|
|
readString() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java
|
|
* <code>boolean</code>.
|
|
*
|
|
* @return The value read from the stream as a <code>boolean</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract boolean
|
|
readBoolean() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java
|
|
* <code>byte</code>.
|
|
*
|
|
* @return The value read from the stream as a <code>byte</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract byte
|
|
readByte() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java
|
|
* <code>short</code>.
|
|
*
|
|
* @return The value read from the stream as a <code>short</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract short
|
|
readShort() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java
|
|
* <code>int</code>.
|
|
*
|
|
* @return The value read from the stream as an <code>int</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract int
|
|
readInt() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java
|
|
* <code>long</code>.
|
|
*
|
|
* @return The value read from the stream as a <code>long</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract long
|
|
readLong() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java
|
|
* <code>float</code>.
|
|
*
|
|
* @return The value read from the stream as a <code>float</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract float
|
|
readFloat() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java
|
|
* <code>double</code>.
|
|
*
|
|
* @return The value read from the stream as a <code>double</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract double
|
|
readDouble() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java
|
|
* <code>BigDecimal</code>.
|
|
*
|
|
* @return The value read from the stream as a <code>BigDecimal</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract BigDecimal
|
|
readBigDecimal() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java
|
|
* byte array
|
|
*
|
|
* @return The value read from the stream as a byte array.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract byte[]
|
|
readBytes() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java
|
|
* <code>java.sql.Date</code>.
|
|
*
|
|
* @return The value read from the stream as a <code>java.sql.Date</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract java.sql.Date
|
|
readDate() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java
|
|
* <code>java.sql.Time</code>.
|
|
*
|
|
* @return The value read from the stream as a <code>java.sql.Time</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract java.sql.Time
|
|
readTime() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java
|
|
* <code>java.sql.Timestamp</code>.
|
|
*
|
|
* @return The value read from the stream as a <code>java.sql.Timestamp</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract java.sql.Timestamp
|
|
readTimestamp() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a ASCII text
|
|
* <code>InputStream</code>.
|
|
*
|
|
* @return The value read from the stream as an <code>InputStream</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract InputStream
|
|
readAsciiStream() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a binary
|
|
* <code>InputStream</code>.
|
|
*
|
|
* @return The value read from the stream as an <code>InputStream</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract InputStream
|
|
readBinaryStream() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a character
|
|
* <code>Reader</code>.
|
|
*
|
|
* @return The value read from the stream as a <code>Reader</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract Reader
|
|
readCharacterStream() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java
|
|
* <code>Object</code>.
|
|
*
|
|
* @return The value read from the stream as an <code>Object</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract Object
|
|
readObject() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java SQL
|
|
* <code>Ref</code>.
|
|
*
|
|
* @return The value read from the stream as an <code>Ref</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract Ref
|
|
readRef() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java SQL
|
|
* <code>Blob</code>.
|
|
*
|
|
* @return The value read from the stream as a <code>Blob</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract Blob
|
|
readBlob() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java SQL
|
|
* <code>Clob</code>.
|
|
*
|
|
* @return The value read from the stream as a <code>Clob</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract Clob
|
|
readClob() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method reads the next item from the stream a Java SQL
|
|
* <code>Array</code>.
|
|
*
|
|
* @return The value read from the stream as an <code>Array</code>.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract Array
|
|
readArray() throws SQLException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* This method tests whether or not the last value read was a SQL
|
|
* NULL value.
|
|
*
|
|
* @return <code>true</code> if the last value read was a NULL,
|
|
* <code>false</code> otherwise.
|
|
*
|
|
* @exception SQLException If an error occurs.
|
|
*/
|
|
public abstract boolean
|
|
wasNull() throws SQLException;
|
|
|
|
} // interface SQLInput
|
|
|