| /* Blob.java -- Access a SQL Binary Large OBject. |
| Copyright (C) 1999, 2000, 2002, 2006 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., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 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.OutputStream; |
| |
| /** |
| * This interface specified methods for accessing a SQL BLOB (Binary Large |
| * OBject) type. |
| * |
| * @author Aaron M. Renn (arenn@urbanophile.com) |
| * @since 1.2 |
| */ |
| public interface Blob |
| { |
| /** |
| * This method returns the number of bytes in this <code>Blob</code>. |
| * |
| * @return The number of bytes in this <code>Blob</code>. |
| * @exception SQLException If an error occurs. |
| */ |
| long length() throws SQLException; |
| |
| /** |
| * This method returns up to the requested bytes of this <code>Blob</code> |
| * as a <code>byte</code> array. |
| * |
| * @param start The index into this <code>Blob</code> to start returning |
| * bytes from. |
| * @param count The requested number of bytes to return. |
| * @return The requested bytes from this <code>Blob</code>. |
| * @exception SQLException If an error occurs. |
| */ |
| byte[] getBytes(long start, int count) throws SQLException; |
| |
| /** |
| * This method returns a stream that will read the bytes of this |
| * <code>Blob</code>. |
| * |
| * @return A stream that will read the bytes of this <code>Blob</code>. |
| * @exception SQLException If an error occurs. |
| */ |
| InputStream getBinaryStream() throws SQLException; |
| |
| /** |
| * This method returns the index into this <code>Blob</code> at which the |
| * first instance of the specified bytes occur. The searching starts at the |
| * specified index into this <code>Blob</code>. |
| * |
| * @param pattern The byte pattern to search for. |
| * @param start The index into this <code>Blob</code> to start searching for |
| * the pattern. |
| * @return The offset at which the pattern is first found, or -1 if the |
| * pattern is not found. |
| * @exception SQLException If an error occurs. |
| */ |
| long position(byte[] pattern, long start) throws SQLException; |
| |
| /** |
| * This method returns the index into this <code>Blob</code> at which the |
| * first instance of the specified pattern occurs. The searching starts at the |
| * specified index into this <code>Blob</code>. The bytes in the specified |
| * <code>Blob</code> are used as the search pattern. |
| * |
| * @param pattern The <code>Blob</code> containing the byte pattern to |
| * search for. |
| * @param start The index into this <code>Blob</code> to start searching for |
| * the pattern. |
| * @return The offset at which the pattern is first found, or -1 if the |
| * pattern is not found. |
| * @exception SQLException If an error occurs. |
| */ |
| long position(Blob pattern, long start) throws SQLException; |
| |
| /** |
| * Writes the specified data into this <code>Blob</code>, starting at the |
| * specified index. |
| * |
| * @param start The index at which the writing starts. |
| * @param bytes The data to write. |
| * @exception SQLException If an error occurs. |
| * @since 1.4 |
| */ |
| int setBytes(long start, byte[] bytes) throws SQLException; |
| |
| /** |
| * Writes a portion of the specified data into this <code>Blob</code>, |
| * starting at the specified index. |
| * |
| * @param startWrite The index into this <code>Blob</code> at which writing |
| * starts. |
| * @param bytes The data to write a portion of. |
| * @param startRead The offset into the data where the portion to copy starts. |
| * @param count The number of bytes to write. |
| * @exception SQLException If an error occurs. |
| * @since 1.4 |
| */ |
| int setBytes(long startWrite, byte[] bytes, int startRead, int count) |
| throws SQLException; |
| |
| /** |
| * Returns a binary stream that writes into this <code>Blob</code>, |
| * starting at the specified index. |
| * |
| * @param start The index at which the writing starts. |
| * @return A binary stream to write into this <code>Blob</code>. |
| * @exception SQLException If an error occurs. |
| * @since 1.4 |
| */ |
| OutputStream setBinaryStream(long start) throws SQLException; |
| |
| /** |
| * Truncates this <code>Blob</code> to be at most the specified number of |
| * bytes long. |
| * |
| * @param count The length this <code>Blob</code> is truncated to. |
| * @exception SQLException If an error occurs. |
| * @since 1.4 |
| */ |
| void truncate(long count) throws SQLException; |
| } |