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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 05:54:39 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 05:54:39 +0000
commit267c6f2ac71f92999e969232431ba04678e7437e (patch)
tree358c9467650e1d0a1d7227a21dac2e3d08b622b2 /connectivity/com/sun/star/sdbcx
parentInitial commit. (diff)
downloadlibreoffice-267c6f2ac71f92999e969232431ba04678e7437e.tar.xz
libreoffice-267c6f2ac71f92999e969232431ba04678e7437e.zip
Adding upstream version 4:24.2.0.upstream/4%24.2.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'connectivity/com/sun/star/sdbcx')
-rw-r--r--connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeInputStreamHelper.java62
-rw-r--r--connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeLibraries.java71
-rw-r--r--connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeOutputStreamHelper.java60
-rw-r--r--connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeStorageAccess.java62
-rw-r--r--connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageAccess.java126
-rw-r--r--connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageFileAccess.java90
-rw-r--r--connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageNativeInputStream.java34
-rw-r--r--connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageNativeOutputStream.java145
8 files changed, 650 insertions, 0 deletions
diff --git a/connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeInputStreamHelper.java b/connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeInputStreamHelper.java
new file mode 100644
index 0000000000..66b6f54898
--- /dev/null
+++ b/connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeInputStreamHelper.java
@@ -0,0 +1,62 @@
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+package com.sun.star.sdbcx.comp.hsqldb;
+
+public class NativeInputStreamHelper extends java.io.InputStream{
+ private final String key;
+ private final String file;
+ private final StorageNativeInputStream in;
+ /** Creates a new instance of NativeInputStreamHelper */
+ public NativeInputStreamHelper(String key,String _file) {
+ file = _file;
+ this.key = key;
+ in = new StorageNativeInputStream(key,file);
+ }
+
+ @Override
+ public int read() throws java.io.IOException {
+ return in.read(key,file);
+ }
+
+ @Override
+ public int read(byte[] b, int off, int len) throws java.io.IOException {
+ return in.read(key,file,b,off,len);
+ }
+
+ @Override
+ public void close() throws java.io.IOException {
+ in.close(key,file);
+ }
+
+ @Override
+ public long skip(long n) throws java.io.IOException {
+ return in.skip(key,file,n);
+ }
+
+ @Override
+ public int available() throws java.io.IOException {
+ return in.available(key,file);
+ }
+
+ @Override
+ public int read(byte[] b) throws java.io.IOException {
+ return in.read(key,file,b);
+ }
+
+}
diff --git a/connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeLibraries.java b/connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeLibraries.java
new file mode 100644
index 0000000000..e8ea8d44ee
--- /dev/null
+++ b/connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeLibraries.java
@@ -0,0 +1,71 @@
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+package com.sun.star.sdbcx.comp.hsqldb;
+
+import java.io.File;
+import java.net.URL;
+import java.net.URLClassLoader;
+
+final class NativeLibraries {
+ public static void load() {
+ if (System.getProperty( "os.name" ).startsWith("Windows")) {
+ loadLibrary("msvcr71");
+ loadLibrary("sal3");
+ loadLibrary("dbtoolsmi");
+ }
+ loadLibrary("hsqldb");
+ }
+
+ private static void loadLibrary(String libname) {
+ // At least on macOS Tiger, System.loadLibrary("hsqldb2") does not
+ // find the hsqldb2 library one directory above sdbc_hsqldb.jar, even
+ // though ".." is on the jar's Class-Path; however, the alternative
+ // code (needing Java 1.5, which is given for macOS Tiger) works
+ // there:
+ try {
+ System.loadLibrary(libname);
+ } catch (UnsatisfiedLinkError e) {
+ ClassLoader cl = NativeLibraries.class.getClassLoader();
+ if (cl instanceof URLClassLoader) {
+ String sysname = System.mapLibraryName(libname);
+ // At least Oracle's 1.7.0_51 now maps to .dylib rather than
+ // .jnilib:
+ if (System.getProperty("os.name").startsWith("Mac")
+ && sysname.endsWith(".dylib"))
+ {
+ sysname
+ = sysname.substring(
+ 0, sysname.length() - "dylib".length())
+ + "jnilib";
+ }
+ URL url = ((URLClassLoader) cl).findResource(sysname);
+ if (url != null) {
+ try {
+ System.load(new File(url.toURI()).getAbsolutePath());
+ } catch (Throwable t) {
+ throw new UnsatisfiedLinkError(
+ e.toString()+ " - " + t.toString());
+ }
+ }
+ }
+ }
+ }
+
+ private NativeLibraries() {}
+}
diff --git a/connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeOutputStreamHelper.java b/connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeOutputStreamHelper.java
new file mode 100644
index 0000000000..6445f24139
--- /dev/null
+++ b/connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeOutputStreamHelper.java
@@ -0,0 +1,60 @@
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+package com.sun.star.sdbcx.comp.hsqldb;
+
+public class NativeOutputStreamHelper extends java.io.OutputStream{
+
+ private final String key;
+ private final String file;
+ private final StorageNativeOutputStream out;
+ /** Creates a new instance of NativeOutputStreamHelper */
+ public NativeOutputStreamHelper(String key,String _file) {
+ file = _file;
+ this.key = key;
+ out = new StorageNativeOutputStream(file,key);
+ }
+
+ @Override
+ public void write(byte[] b, int off, int len) throws java.io.IOException{
+ out.write(key,file,b, off, len);
+ }
+
+ @Override
+ public void write(byte[] b) throws java.io.IOException{
+ out.write(key,file,b);
+ }
+
+ @Override
+ public void close() throws java.io.IOException{
+ out.close(key,file);
+ }
+
+ @Override
+ public void write(int b) throws java.io.IOException{
+ out.write(key,file,b);
+ }
+
+ @Override
+ public void flush() throws java.io.IOException{
+ out.flush(key,file);
+ }
+
+ public void sync() throws java.io.IOException{
+ out.sync(key,file);
+ }
+}
diff --git a/connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeStorageAccess.java b/connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeStorageAccess.java
new file mode 100644
index 0000000000..5a9bc8bb6c
--- /dev/null
+++ b/connectivity/com/sun/star/sdbcx/comp/hsqldb/NativeStorageAccess.java
@@ -0,0 +1,62 @@
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+package com.sun.star.sdbcx.comp.hsqldb;
+
+public class NativeStorageAccess {
+ static { NativeLibraries.load(); }
+
+ public static final int READ = 1;
+ private static final int SEEKABLE = 2;
+ private static final int SEEKABLEREAD = 3;
+ public static final int WRITE = 4;
+ private static final int READWRITE = 7;
+ public static final int TRUNCATE = 8;
+
+ /** Creates a new instance of StorageAccess */
+ public NativeStorageAccess(String name,String _mode,Object key) throws java.io.IOException{
+ try {
+ int mode = NativeStorageAccess.SEEKABLEREAD;
+ if ( _mode.equals("rw") )
+ mode = NativeStorageAccess.READWRITE | NativeStorageAccess.SEEKABLE;
+
+ openStream(name, (String)key, mode);
+ } catch(Exception ex1){
+ java.io.IOException ex2 = new java.io.IOException();
+ ex2.initCause(ex1);
+ throw ex2;
+ }
+ }
+ private native void openStream(String name,String key, int mode);
+ public native void close(String name,String key) throws java.io.IOException;
+
+ public native long getFilePointer(String name,String key) throws java.io.IOException;
+
+ public native long length(String name,String key) throws java.io.IOException;
+
+ public native int read(String name,String key) throws java.io.IOException;
+
+ public native int read(String name,String key,byte[] b, int off, int len) throws java.io.IOException;
+
+
+
+ public native void seek(String name,String key,long position) throws java.io.IOException;
+
+ public native void write(String name,String key,byte[] b, int offset, int length) throws java.io.IOException;
+
+
+}
diff --git a/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageAccess.java b/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageAccess.java
new file mode 100644
index 0000000000..6a53d110e6
--- /dev/null
+++ b/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageAccess.java
@@ -0,0 +1,126 @@
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+package com.sun.star.sdbcx.comp.hsqldb;
+
+@SuppressWarnings("ucd")
+public class StorageAccess implements org.hsqldb.lib.Storage {
+ String key;
+ String name;
+ boolean readonly;
+ NativeStorageAccess access;
+ /** Creates a new instance of StorageAccess */
+ public StorageAccess(String name,Boolean readonly,Object key) throws java.io.IOException{
+ this.key = (String)key;
+ this.name = name;
+ this.readonly = readonly.booleanValue();
+ try {
+ access = new NativeStorageAccess(name,
+ this.readonly ? "r" : "rw"
+ ,key);
+ } catch(Exception ex1){
+ java.io.IOException ex2 = new java.io.IOException();
+ ex2.initCause(ex1);
+ throw ex2;
+ }
+ }
+ public void close() throws java.io.IOException{
+ access.close(name,key);
+ }
+
+ public long getFilePointer() throws java.io.IOException{
+ return access.getFilePointer(name,key);
+ }
+
+ public long length() throws java.io.IOException{
+ return access.length(name,key);
+ }
+
+ public int read() throws java.io.IOException{
+ return access.read(name,key);
+ }
+
+ public void read(byte[] b, int off, int len) throws java.io.IOException{
+ access.read(name,key,b,off,len);
+ }
+
+ // based on the same code that reads an int from the .data file in HSQLDB
+ public int readInt() throws java.io.IOException{
+ byte [] tmp = new byte [4];
+
+ int count = access.read(name,key,tmp,0, 4);
+
+ if (count != 4){
+ throw new java.io.IOException();
+ }
+
+ count = 0;
+ int ch0 = tmp[count++] & 0xff;
+ int ch1 = tmp[count++] & 0xff;
+ int ch2 = tmp[count++] & 0xff;
+ int ch3 = tmp[count] & 0xff;
+
+ return ((ch0 << 24) + (ch1 << 16) + (ch2 << 8) + (ch3));
+ }
+
+ public void seek(long position) throws java.io.IOException{
+ access.seek(name,key,position);
+ }
+
+ public void write(byte[] b, int offset, int length) throws java.io.IOException{
+ access.write(name,key,b,offset,length);
+ }
+
+ public void writeInt(int v) throws java.io.IOException{
+ byte [] oneByte = new byte [4];
+ oneByte[0] = (byte) ((v >>> 24) & 0xFF);
+ oneByte[1] = (byte) ((v >>> 16) & 0xFF);
+ oneByte[2] = (byte) ((v >>> 8) & 0xFF);
+ oneByte[3] = (byte) ((v >>> 0) & 0xFF);
+
+ write(oneByte,0,4);
+ }
+
+ public boolean isReadOnly() {
+ return readonly;
+ }
+
+ @SuppressWarnings("cast")
+ public long readLong() throws java.io.IOException {
+ return (((long) readInt()) << 32) + (((long) readInt()) & 0xFFFFFFFFL);
+ }
+
+ public boolean wasNio() {
+ return false;
+ }
+
+ public void writeLong(long v) throws java.io.IOException {
+ byte [] oneByte = new byte [8];
+
+ oneByte[0] = (byte) ((v >>> 56) & 0xFF);
+ oneByte[1] = (byte) ((v >>> 48) & 0xFF);
+ oneByte[2] = (byte) ((v >>> 40) & 0xFF);
+ oneByte[3] = (byte) ((v >>> 32) & 0xFF);
+ oneByte[4] = (byte) ((v >>> 24) & 0xFF);
+ oneByte[5] = (byte) ((v >>> 16) & 0xFF);
+ oneByte[6] = (byte) ((v >>> 8) & 0xFF);
+ oneByte[7] = (byte) ((v >>> 0) & 0xFF);
+
+ write(oneByte,0,8);
+ }
+}
diff --git a/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageFileAccess.java b/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageFileAccess.java
new file mode 100644
index 0000000000..0dd640c4ec
--- /dev/null
+++ b/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageFileAccess.java
@@ -0,0 +1,90 @@
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+package com.sun.star.sdbcx.comp.hsqldb;
+
+import org.hsqldb.lib.FileAccess;
+import org.hsqldb.lib.FileSystemRuntimeException;
+
+@SuppressWarnings("ucd")
+public class StorageFileAccess implements org.hsqldb.lib.FileAccess{
+ static { NativeLibraries.load(); }
+
+ String ds_name;
+ String key;
+ /** Creates a new instance of StorageFileAccess */
+ public StorageFileAccess(Object key) throws java.lang.Exception{
+ this.key = (String)key;
+ }
+
+ public void createParentDirs(String filename) {
+ }
+
+ public boolean isStreamElement(String elementName) {
+ return isStreamElement(key,elementName);
+ }
+
+ public java.io.InputStream openInputStreamElement(String streamName) throws java.io.IOException {
+ return new NativeInputStreamHelper(key,streamName);
+ }
+
+ public java.io.OutputStream openOutputStreamElement(String streamName) throws java.io.IOException {
+ return new NativeOutputStreamHelper(key,streamName);
+ }
+
+ public void removeElement(String filename) throws java.util.NoSuchElementException {
+ try {
+ if ( isStreamElement(key,filename) )
+ removeElement(key,filename);
+ } catch (java.io.IOException e) {
+ throw new FileSystemRuntimeException( e );
+ }
+ }
+
+ public void renameElement(String oldName, String newName) throws java.util.NoSuchElementException {
+ try {
+ if ( isStreamElement(key,oldName) ){
+ removeElement(key,newName);
+ renameElement(key,oldName, newName);
+ }
+ } catch (java.io.IOException e) {
+ throw new FileSystemRuntimeException( e );
+ }
+ }
+
+ private static class FileSync implements FileAccess.FileSync
+ {
+ private final NativeOutputStreamHelper os;
+ private FileSync(NativeOutputStreamHelper _os)
+ {
+ os = _os;
+ }
+ public void sync() throws java.io.IOException
+ {
+ os.sync();
+ }
+ }
+
+ public FileAccess.FileSync getFileSync(java.io.OutputStream os) throws java.io.IOException
+ {
+ return new FileSync((NativeOutputStreamHelper)os);
+ }
+
+ static native boolean isStreamElement(String key,String elementName);
+ static native void removeElement(String key,String filename) throws java.util.NoSuchElementException, java.io.IOException;
+ static native void renameElement(String key,String oldName, String newName) throws java.util.NoSuchElementException, java.io.IOException;
+}
diff --git a/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageNativeInputStream.java b/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageNativeInputStream.java
new file mode 100644
index 0000000000..cf147c9b50
--- /dev/null
+++ b/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageNativeInputStream.java
@@ -0,0 +1,34 @@
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+package com.sun.star.sdbcx.comp.hsqldb;
+
+public class StorageNativeInputStream {
+ static { NativeLibraries.load(); }
+
+ /** Creates a new instance of StorageNativeInputStream */
+ public StorageNativeInputStream(String key,String _file) {
+ openStream(key,_file, NativeStorageAccess.READ);
+ }
+ private native void openStream(String key,String name, int mode);
+ public native int read(String key,String name) throws java.io.IOException;
+ public native int read(String key,String name,byte[] b, int off, int len) throws java.io.IOException;
+ public native void close(String key,String name) throws java.io.IOException;
+ public native long skip(String key,String name,long n) throws java.io.IOException;
+ public native int available(String key,String name) throws java.io.IOException;
+ public native int read(String key,String name,byte[] b) throws java.io.IOException;
+}
diff --git a/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageNativeOutputStream.java b/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageNativeOutputStream.java
new file mode 100644
index 0000000000..8cc6cb07d3
--- /dev/null
+++ b/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageNativeOutputStream.java
@@ -0,0 +1,145 @@
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+package com.sun.star.sdbcx.comp.hsqldb;
+
+public class StorageNativeOutputStream {
+ static { NativeLibraries.load(); }
+
+ /** Creates a new instance of StorageNativeOutputStream */
+ public StorageNativeOutputStream(String _name, Object key) {
+ openStream(_name, (String)key, NativeStorageAccess.WRITE | NativeStorageAccess.TRUNCATE);
+ }
+
+ private native void openStream(String name,String key, int mode);
+ /**
+ * Writes <code>len</code> bytes from the specified byte array
+ * starting at offset <code>off</code> to this output stream.
+ * The general contract for <code>write(b, off, len)</code> is that
+ * some of the bytes in the array <code>b</code> are written to the
+ * output stream in order; element <code>b[off]</code> is the first
+ * byte written and <code>b[off+len-1]</code> is the last byte written
+ * by this operation.
+ * <p>
+ * The <code>write</code> method of <code>OutputStream</code> calls
+ * the write method of one argument on each of the bytes to be
+ * written out. Subclasses are encouraged to override this method and
+ * provide a more efficient implementation.
+ * <p>
+ * If <code>b</code> is <code>null</code>, a
+ * <code>NullPointerException</code> is thrown.
+ * <p>
+ * If <code>off</code> is negative, or <code>len</code> is negative, or
+ * <code>off+len</code> is greater than the length of the array
+ * <code>b</code>, then an <tt>IndexOutOfBoundsException</tt> is thrown.
+ * @param key The name of the data source.
+ * @param _file The name of the file to write to.
+ * @param b the data.
+ * @param off the start offset in the data.
+ * @param len the number of bytes to write.
+ * @exception java.io.IOException if an I/O error occurs. In particular,
+ * an <code>IOException</code> is thrown if the output
+ * stream is closed.
+ */
+ public native void write(String key,String _file,byte[] b, int off, int len) throws java.io.IOException;
+
+ /**
+ * Writes <code>b.length</code> bytes from the specified byte array
+ * to this output stream. The general contract for <code>write(b)</code>
+ * is that it should have exactly the same effect as the call
+ * <code>write(b, 0, b.length)</code>.
+ *
+ * @param b the data.
+ * @exception java.io.IOException if an I/O error occurs.
+ * @see java.io.OutputStream#write(byte[], int, int)
+ */
+ public native void write(String key,String _file,byte[] b) throws java.io.IOException;
+
+ /**
+ * Closes this output stream and releases any system resources
+ * associated with this stream. The general contract of <code>close</code>
+ * is that it closes the output stream. A closed stream cannot perform
+ * output operations and cannot be reopened.
+ * <p>
+ * The <code>close</code> method of <code>OutputStream</code> does nothing.
+ * @param key The name of the data source.
+ * @param _file The name of the file to write to.
+ *
+ * @exception java.io.IOException if an I/O error occurs.
+ */
+ public native void close(String key,String _file) throws java.io.IOException;
+
+ /**
+ * Writes the specified byte to this output stream. The general
+ * contract for <code>write</code> is that one byte is written
+ * to the output stream. The byte to be written is the eight
+ * low-order bits of the argument <code>b</code>. The 24
+ * high-order bits of <code>b</code> are ignored.
+ * <p>
+ * Subclasses of <code>OutputStream</code> must provide an
+ * implementation for this method.
+ *
+ * @param key The name of the data source.
+ * @param _file The name of the file to write to.
+ * @param b the <code>byte</code>.
+ * @exception java.io.IOException if an I/O error occurs. In particular,
+ * an <code>IOException</code> may be thrown if the
+ * output stream has been closed.
+ */
+ public native void write(String key,String _file,int b) throws java.io.IOException;
+
+ /**
+ * Flushes this output stream and forces any buffered output bytes
+ * to be written out. The general contract of <code>flush</code> is
+ * that calling it is an indication that, if any bytes previously
+ * written have been buffered by the implementation of the output
+ * stream, such bytes should immediately be written to their
+ * intended destination.
+ * <p>
+ * The <code>flush</code> method of <code>OutputStream</code> does nothing.
+ * @param key The name of the data source.
+ * @param _file The name of the file to write to.
+ *
+ * @exception java.io.IOException if an I/O error occurs.
+ */
+ public native void flush(String key,String _file) throws java.io.IOException;
+
+ /**
+ * Force all system buffers to synchronize with the underlying
+ * device. This method returns after all modified data and
+ * attributes have been written to the relevant device(s).
+ *
+ * sync is meant to be used by code that requires physical
+ * storage (such as a file) to be in a known state For
+ * example, a class that provided a simple transaction facility
+ * might use sync to ensure that all changes to a file caused
+ * by a given transaction were recorded on a storage medium.
+ *
+ * sync only affects buffers downstream. If
+ * any in-memory buffering is being done by the application (for
+ * example, by a BufferedOutputStream object), those buffers must
+ * be flushed (for example, by invoking
+ * OutputStream.flush) before that data will be affected by sync.
+ *
+ * @exception java.io.IOException
+ * Thrown when the buffers cannot be flushed,
+ * or because the system cannot guarantee that all the
+ * buffers have been synchronized with physical media.
+ */
+ public native void sync(String key,String _file) throws java.io.IOException;
+
+}