/* Copyright (c) 2001-2018, The HSQL Development Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the HSQL Development Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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package org.hsqldb.rowio;
import org.hsqldb.
Row;
import org.hsqldb.persist.
Crypto;
import org.hsqldb.types.
Type;
/**
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @version 2.0.1
* @since 1.9.0
*/
public class
RowOutputBinaryEncode extends
RowOutputBinary {
final
Crypto crypto;
public
RowOutputBinaryEncode(
Crypto crypto, int
initialSize, int
scale) {
super(
initialSize,
scale);
this.
crypto =
crypto;
}
public void
writeData(
Row row,
Type[]
types) {
if (
crypto == null) {
super.writeData(
row,
types);
} else {
int
start =
count;
ensureRoom(
row.
getStorageSize());
writeInt(0);
super.writeData(
row,
types);
int
origLength =
count -
start -
INT_STORE_SIZE;
int
newLength =
crypto.
encode(
buffer,
start +
INT_STORE_SIZE,
origLength,
buffer,
start +
INT_STORE_SIZE);
writeIntData(
newLength,
start);
count =
start +
INT_STORE_SIZE +
newLength;
}
}
/**
* Calculate the size of byte array required to store a row.
*
* @param row - a database row
* @return size of byte array
*/
public int
getSize(
Row row) {
int
size = super.getSize(
row);
if (
crypto != null) {
size =
crypto.
getEncodedSize(
size -
INT_STORE_SIZE)
+
INT_STORE_SIZE * 2;
}
return
size;
}
public
RowOutputInterface duplicate() {
return new
RowOutputBinaryEncode(
crypto, 128, this.
scale);
}
}