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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/sql/Blob.java
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+/* 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;
+}