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The Open Source version of the IBM Toolbox for Java
///////////////////////////////////////////////////////////////////////////////
//
// JTOpen (IBM Toolbox for Java - OSS version)
//
// Filename: DBExtendedDataFormat.java
//
// The source code contained herein is licensed under the IBM Public License
// Version 1.0, which has been approved by the Open Source Initiative.
// Copyright (C) 1997-2001 International Business Machines Corporation and
// others. All rights reserved.
//
///////////////////////////////////////////////////////////////////////////////
package com.ibm.as400.access;
import java.io.CharConversionException;
/**
The DBExtendedDataFormat class is an implementation of
DBDataFormat which describes the data format used in
datastreams for V4R4 and later systems.
**/
class DBExtendedDataFormat
implements DBDataFormat
{
private static final String copyright = "Copyright (C) 1997-2001 International Business Machines Corporation and others.";
// Private data.
private static final int FIXED_LENGTH_ = 16;
private static final int REPEATED_LENGTH_ = 64;
private byte[] rawBytes_ = null;
private int offset_ = -1;
private int numberOfFields_ = -1;
private int length_ = -1;
private boolean csRsData_ = false; // @550A indicates whether the data associated with this format is from a stored procedure result set
/**
Constructs a DBExtendedDataFormat object. Use this when overlaying
on a reply datastream. The cached data will be set when overlay()
is called.
**/
public DBExtendedDataFormat ()
{
}
/**
Constructs a DBExtendedDataFormat object. Use this when overlaying
on a request datastream. This sets the cached data so that
the total length can be calculated before calling overlay().
* @param numberOfFields
**/
public DBExtendedDataFormat (int numberOfFields)
{
numberOfFields_ = numberOfFields;
length_ = FIXED_LENGTH_ + numberOfFields_ * REPEATED_LENGTH_;
}
/**
Positions the overlay structure. This reads the cached data only
when it was not previously set by the constructor.
**/
public void overlay (byte[] rawBytes, int offset)
{
rawBytes_ = rawBytes;
offset_ = offset;
if (numberOfFields_ == -1)
{
numberOfFields_ = BinaryConverter.byteArrayToInt (rawBytes_, offset + 4);
length_ = FIXED_LENGTH_ + numberOfFields_ * REPEATED_LENGTH_;
}
else
{
setNumberOfFields (numberOfFields_);
}
}
public int getLength ()
{
return length_;
}
public int getConsistencyToken ()
{
return BinaryConverter.byteArrayToInt (rawBytes_, offset_);
}
public int getNumberOfFields ()
{
return numberOfFields_;
}
public int getRecordSize ()
{
return BinaryConverter.byteArrayToInt (rawBytes_, offset_ + 12);
}
public int getFieldSQLType (int fieldIndex)
{
return BinaryConverter.byteArrayToShort (rawBytes_,
offset_ + 18 + (fieldIndex * REPEATED_LENGTH_));
}
public int getFieldLength (int fieldIndex)
{
return BinaryConverter.byteArrayToInt (rawBytes_,
offset_ + 20 + (fieldIndex * REPEATED_LENGTH_));
}
public int getArrayFieldLength(int fieldIndex) throws DBDataStreamException {
return BinaryConverter.byteArrayToInt (rawBytes_,
offset_ + 20 + (fieldIndex * REPEATED_LENGTH_));
}
public int getFieldScale (int fieldIndex)
{
return BinaryConverter.byteArrayToShort (rawBytes_,
offset_ + 24 + (fieldIndex * REPEATED_LENGTH_));
}
public int getFieldPrecision (int fieldIndex)
{
return BinaryConverter.byteArrayToShort (rawBytes_,
offset_ + 26 + (fieldIndex * REPEATED_LENGTH_));
}
public int getFieldCCSID (int fieldIndex)
{
return BinaryConverter.byteArrayToUnsignedShort (rawBytes_, //@B0C
offset_ + 28 + (fieldIndex * REPEATED_LENGTH_));
}
public int getFieldParameterType (int fieldIndex)
{
return rawBytes_[offset_ + 30 + (fieldIndex * REPEATED_LENGTH_)];
}
public int getFieldLOBLocator (int fieldIndex) // @A1A
{ // @A1A
return BinaryConverter.byteArrayToInt (rawBytes_, // @A1A
offset_ + 33 + (fieldIndex * REPEATED_LENGTH_)); // @A1A
} // @A1A
public int getFieldLOBMaxSize (int fieldIndex) // @A1A
{ // @A1A
return BinaryConverter.byteArrayToInt (rawBytes_, // @A1A
offset_ + 42 + (fieldIndex * REPEATED_LENGTH_)); // @A1A
} // @A1A
public int getFieldNameLength (int fieldIndex)
{
return BinaryConverter.byteArrayToShort (rawBytes_,
offset_ + 46 + (fieldIndex * REPEATED_LENGTH_));
}
public int getFieldNameCCSID (int fieldIndex)
{
return BinaryConverter.byteArrayToShort (rawBytes_,
offset_ + 48 + (fieldIndex * REPEATED_LENGTH_));
}
public String getFieldName (int fieldIndex, ConvTable converter) //@P0C
{
return converter.byteArrayToString (rawBytes_,
offset_ + 50 + (fieldIndex * REPEATED_LENGTH_),
getFieldNameLength (fieldIndex));
}
/**
* UDTName is not available with ExtendedDataFormat, return -1
*/
/*@L1A*/
public int getUDTNameCCSID(int fieldIndex) {
return -1;
}
/**
* UDTName is not available with ExtendedDataFormat, return 0
*/
/*@L1A*/
public String getUDTName(int fieldIndex, ConvTable converter) {
return null;
}
public void setConsistencyToken (int consistencyToken)
{
BinaryConverter.intToByteArray (consistencyToken, rawBytes_,
offset_);
}
public void setNumberOfFields (int numberOfFields)
{
BinaryConverter.intToByteArray (numberOfFields, rawBytes_,
offset_ + 4);
}
public void setRecordSize (int recordSize)
{
BinaryConverter.intToByteArray (recordSize, rawBytes_,
offset_ + 12);
}
public void setFieldDescriptionLength (int fieldIndex)
{
BinaryConverter.shortToByteArray ((short) REPEATED_LENGTH_,
rawBytes_, offset_ + fieldIndex * REPEATED_LENGTH_ + 16);
}
public void setFieldSQLType (int fieldIndex, int sqlType)
{
BinaryConverter.shortToByteArray ((short) sqlType,
rawBytes_, offset_ + fieldIndex * REPEATED_LENGTH_ + 18);
}
public void setFieldLength (int fieldIndex, int length)
{
BinaryConverter.intToByteArray (length,
rawBytes_, offset_ + fieldIndex * REPEATED_LENGTH_ + 20);
}
public void setFieldScale (int fieldIndex, int scale)
{
BinaryConverter.shortToByteArray ((short) scale,
rawBytes_, offset_ + fieldIndex * REPEATED_LENGTH_ + 24);
}
public void setFieldPrecision (int fieldIndex, int precision)
{
BinaryConverter.shortToByteArray ((short) precision,
rawBytes_, offset_ + fieldIndex * REPEATED_LENGTH_ + 26);
}
public void setFieldCCSID (int fieldIndex, int ccsid)
{
BinaryConverter.shortToByteArray ((short) ccsid,
rawBytes_, offset_ + fieldIndex * REPEATED_LENGTH_ + 28);
}
public void setFieldParameterType (int fieldIndex, int parameterType)
{
rawBytes_[offset_ + fieldIndex * REPEATED_LENGTH_ + 30] = (byte) parameterType;
}
public void setFieldNameLength (int fieldIndex, int nameLength)
{
BinaryConverter.shortToByteArray ((short) nameLength,
rawBytes_, offset_ + fieldIndex * REPEATED_LENGTH_ + 46);
}
public void setFieldNameCCSID (int fieldIndex, int nameCCSID)
{
BinaryConverter.shortToByteArray ((short) nameCCSID,
rawBytes_, offset_ + fieldIndex * REPEATED_LENGTH_ + 48);
}
public void setFieldName (int fieldIndex, String name, ConvTable converter) //@P0C
throws DBDataStreamException
{
try
{
converter.stringToByteArray (name, rawBytes_,
offset_ + fieldIndex * REPEATED_LENGTH_ + 50);
}
catch (CharConversionException e)
{
throw new DBDataStreamException ();
}
// Pad the remaining field with zeros.
int length = name.length ();
int padOffset = offset_ + fieldIndex * REPEATED_LENGTH_ + 50;
for (int i = length; i < 30; i++)
rawBytes_[padOffset + i] = 0;
}
// @550A - This isn't included in the Extended Data Stream Format
public int getDateFormat() throws DBDataStreamException {
return -1;
}
// @550A - This isn't included in the Extended Data Stream Format
public int getTimeFormat() throws DBDataStreamException {
return -1;
}
// @550A - This isn't included in the Extended Data Stream Format
public int getDateSeparator() throws DBDataStreamException {
return -1;
}
// @550A - This isn't included in the Extended Data Stream Format
public int getTimeSeparator() throws DBDataStreamException {
return -1;
}
// @550A - returns whether or not this data is associated with a stored procedure result set
public boolean getCSRSData()
{
return csRsData_;
}
//@550A - sets whether or not this data is associated with a stored procedure result set
public void setCSRSData(boolean csRsData)
{
csRsData_ = csRsData;
}
//@xml3 This isn't included in the Extended Data Stream Format
public int getXMLCharType(int fieldIndex)
{
return -1;
}
//@array - This isn't included in the Extended Data Stream Format
public int getArrayType(int fieldIndex)
{
return -1;
}
}