1 files changed, 326 insertions, 0 deletions
diff --git a/java/sql/SQLInput.java b/java/sql/SQLInput.java
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+/*************************************************************************
+/* SQLInput.java -- Read SQL values from a stream
+/*
+/* Copyright (c) 1999 Free Software Foundation, Inc.
+/* Written by Aaron M. Renn (arenn@urbanophile.com)
+/*
+/* This library is free software; you can redistribute it and/or modify
+/* it under the terms of the GNU Library General Public License as published 
+/* by the Free Software Foundation, either version 2 of the License, or
+/* (at your option) any later verion.
+/*
+/* This library 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 Library General Public License for more details.
+/*
+/* You should have received a copy of the GNU Library General Public License
+/* along with this library; if not, write to the Free Software Foundation
+/* Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307 USA
+/*************************************************************************/
+
+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 abstract 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
+