package com.dbxml.xml.dtsm;
/*
* dbXML - Native XML Database
* Copyright (c) 1999-2006 The dbXML Group, L.L.C.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* $Id: CompressedTable.java,v 1.3 2006/02/02 19:04:46 bradford Exp $
*/
import com.dbxml.db.core.data.Value;
import com.dbxml.util.ByteArray;
import com.dbxml.xml.SymbolTable;
/**
* CompressedTable
*/
public final class CompressedTable implements DocumentTable {
private SymbolTable symbols;
private byte[] data;
private int entryCount;
private int entryOffset;
private int valueCount;
private int valueOffset;
private int dataOffset;
public CompressedTable(byte[] data, SymbolTable symbols) {
this.data = data;
this.symbols = symbols;
entryCount = ByteArray.readInt(data, 0);
valueCount = ByteArray.readInt(data, Constants.INT_SIZE);
entryOffset = Constants.INT_SIZE * 2;
valueOffset = entryOffset + (entryCount * DocumentTableEntry.SIZE);
dataOffset = valueOffset + (valueCount * ValueTableEntry.SIZE);
}
public byte[] getData() {
return data;
}
public void setSymbolTable(SymbolTable symbols) {
this.symbols = symbols;
}
public SymbolTable getSymbolTable() {
return symbols;
}
public int getEntryCount() {
return entryCount;
}
public DocumentTableEntry getEntry(int idx) {
int offset = entryOffset + (idx * DocumentTableEntry.SIZE);
return new DocumentTableEntry(data, offset);
}
public int getValueCount() {
return valueCount;
}
public ValueTableEntry getValueEntry(int idx) {
int offset = valueOffset + (idx * ValueTableEntry.SIZE);
return new ValueTableEntry(data, offset);
}
public Value getValue(int idx) {
ValueTableEntry vte = getValueEntry(idx);
return getValue(vte);
}
public Value getValue(ValueTableEntry vte) {
return new Value(data, dataOffset+vte.getOffset(), vte.getLength());
}
}