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The Open Source version of the IBM Toolbox for Java
///////////////////////////////////////////////////////////////////////////////
//
// JTOpen (IBM Toolbox for Java - OSS version)
//
// Filename: SQLNChar.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) 2006-2006 International Business Machines Corporation and
// others. All rights reserved.
//
///////////////////////////////////////////////////////////////////////////////
package com.ibm.as400.access;
import java.io.CharConversionException;
import java.io.InputStream;
import java.io.Reader;
import java.io.StringReader;
import java.sql.Blob;
import java.sql.Clob;
/*ifdef JDBC40
import java.sql.NClob;
import java.sql.RowId;
endif */
import java.sql.SQLException;
/* ifdef JDBC40
import java.sql.SQLXML;
endif */
import java.sql.Time;
import java.sql.Timestamp;
import java.util.Calendar;
import java.net.URL;
//@PDA jdbc40 new class
final class SQLNChar
extends SQLDataBase
{
// Private data.
private int maxLength_;
private String value_;
private String originalValue_;
private int ccsid_; //@cca1
SQLNChar(int maxLength, SQLConversionSettings settings)
{
super(settings);
maxLength_ = maxLength;
truncated_ = 0; outOfBounds_ = false;
value_ = "";
originalValue_ = "";
ccsid_ = 1200;
}
public Object clone()
{
return new SQLNChar(maxLength_,settings_);
}
//---------------------------------------------------------//
// //
// CONVERSION TO AND FROM RAW BYTES //
// //
//---------------------------------------------------------//
public void convertFromRawBytes(byte[] rawBytes, int offset, ConvTable ccsidConverter, boolean ignoreConversionErrors)
throws SQLException
{
int bidiStringType = settings_.getBidiStringType();
// if bidiStringType is not set by user, use ccsid to get value
if(bidiStringType == -1)
bidiStringType = ccsidConverter.bidiStringType_;
BidiConversionProperties bidiConversionProperties = new BidiConversionProperties(bidiStringType);
bidiConversionProperties.setBidiImplicitReordering(settings_.getBidiImplicitReordering());
bidiConversionProperties.setBidiNumericOrderingRoundTrip(settings_.getBidiNumericOrdering());
value_ = ccsidConverter.byteArrayToString(rawBytes, offset, maxLength_, bidiConversionProperties);
originalValue_ = value_;
}
public void convertToRawBytes(byte[] rawBytes, int offset, ConvTable ccsidConverter)
throws SQLException
{
int bidiStringType = settings_.getBidiStringType();
// if bidiStringType is not set by user, use ccsid to get value
if(bidiStringType == -1)
bidiStringType = ccsidConverter.bidiStringType_;
BidiConversionProperties bidiConversionProperties = new BidiConversionProperties(bidiStringType);
bidiConversionProperties.setBidiImplicitReordering(settings_.getBidiImplicitReordering());
bidiConversionProperties.setBidiNumericOrderingRoundTrip(settings_.getBidiNumericOrdering());
try
{
// check for truncation after conversion @H2C
truncated_ = ccsidConverter.stringToByteArray(value_, rawBytes, offset, maxLength_, bidiConversionProperties);
}
catch(CharConversionException e)
{
maxLength_ = ccsidConverter.stringToByteArray(value_, bidiConversionProperties).length;
JDError.throwSQLException(this, JDError.EXC_INTERNAL, e);
}
}
//---------------------------------------------------------//
// //
// SET METHODS //
// //
//---------------------------------------------------------//
public void set(Object object, Calendar calendar, int scale)
throws SQLException
{
String value = null;
if(object instanceof String)
value = (String)object;
else if(object instanceof Character)
value = object.toString();
else if(object instanceof Number)
value = object.toString();
else if(object instanceof Boolean)
{
// if "translate boolean" == false, then use "0" and "1" values to match native driver
if(settings_.getTranslateBoolean() == true)
value = object.toString(); //"true" or "false"
else
value = ((Boolean)object).booleanValue() == true ? "1" : "0";
}
else if(object instanceof Time)
value = SQLTime.timeToString((Time)object, settings_, calendar);
else if(object instanceof Timestamp)
value = SQLTimestamp.timestampToStringTrimTrailingZeros((Timestamp)object, calendar, settings_);
else if(object instanceof java.util.Date)
value = SQLDate.dateToString((java.util.Date)object, settings_, calendar);
else if(object instanceof URL)
value = object.toString();
else if( object instanceof Clob)
{
Clob clob = (Clob)object;
value = clob.getSubString(1, (int)clob.length());
}
else if(object instanceof Reader)
{
value = getStringFromReader((Reader) object, ALL_READER_BYTES, this);
}
/* ifdef JDBC40
else if(object instanceof SQLXML) //@PDA jdbc40
{
SQLXML xml = (SQLXML)object;
value = xml.getString();
}
endif */
if(value == null) {
if (JDTrace.isTraceOn()) {
if (object == null) {
JDTrace.logInformation(this, "Unable to assign null object");
} else {
JDTrace.logInformation(this, "Unable to assign object("+object+") of class("+object.getClass().toString()+")");
}
}
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
}
value_ = value;
originalValue_ = value;
// Set to the exact length.
int valueLength = value_.length();
int exactLength = getDisplaySize();
if(valueLength < exactLength)
{
StringBuffer buffer = new StringBuffer(value_);
char c = '\u0020';
for(int i = valueLength; i < exactLength; ++i)
buffer.append(c);
value_ = buffer.toString();
truncated_ = 0; outOfBounds_ = false;
}
else if(valueLength > exactLength)
{
value_ = value_.substring(0, exactLength);
originalValue_ = value_;
truncated_ = valueLength - exactLength;
outOfBounds_ = false;
}
else
truncated_ = 0; outOfBounds_ = false;
}
//---------------------------------------------------------//
// //
// DESCRIPTION OF SQL TYPE //
// //
//---------------------------------------------------------//
public int getSQLType()
{
return SQLData.NCHAR;
}
public String getCreateParameters()
{
return AS400JDBCDriver.getResource("MAXLENGTH",null);
}
public int getDisplaySize()
{
return maxLength_ / 2;
}
// JDBC 3.0
public String getJavaClassName()
{
return "java.lang.String";
}
public String getLiteralPrefix()
{
return "\'";
}
public String getLiteralSuffix()
{
return "\'";
}
public String getLocalName()
{
return "NCHAR";
}
public int getMaximumPrecision()
{
return 16382;
}
public int getMaximumScale()
{
return 0;
}
public int getMinimumScale()
{
return 0;
}
public int getNativeType()
{
return 468;
}
public int getPrecision()
{
return maxLength_ / 2;
}
public int getRadix()
{
return 0;
}
public int getScale()
{
return 0;
}
public int getType()
{
/* ifdef JDBC40
return java.sql.Types.NCHAR;
endif */
/* ifndef JDBC40 */
return java.sql.Types.CHAR;
/* endif */
}
public String getTypeName()
{
/* ifdef JDBC40
return "NCHAR";
endif */
/* ifndef JDBC40 */
return "CHAR";
/* endif */
}
public boolean isSigned()
{
return false;
}
public boolean isText()
{
return true;
}
public int getActualSize()
{
return value_.length();
}
public int getTruncated()
{
return truncated_;
}
public boolean getOutOfBounds() {
return outOfBounds_;
}
//---------------------------------------------------------//
// //
// CONVERSIONS TO JAVA TYPES //
// //
//---------------------------------------------------------//
public InputStream getBinaryStream()
throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
return new HexReaderInputStream(new StringReader(getString()));
}
public Blob getBlob()
throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
try
{
return new AS400JDBCBlob(BinaryConverter.stringToBytes(getString()), maxLength_);
}
catch(NumberFormatException nfe)
{
// this field contains non-hex characters
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH, nfe);
return null;
}
}
public byte[] getBytes()
throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
try
{
return BinaryConverter.stringToBytes(getString());
}
catch(NumberFormatException nfe)
{
// this field contains non-hex characters
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH, nfe);
return null;
}
}
public Object getBatchableObject() throws SQLException {
// Return the object that has not yet been padded
return originalValue_;
}
public Object getObject()
throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
// This is written in terms of getString(), since it will
// handle truncating to the max field size if needed.
return getString();
}
public String getString()
throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
// Truncate to the max field size if needed.
// Do not signal a DataTruncation per the spec.
int maxFieldSize = settings_.getMaxFieldSize();
if((value_.length() > maxFieldSize) && (maxFieldSize > 0))
{
return value_.substring(0, maxFieldSize);
}
else
{
return value_;
}
}
// Added method trim() to trim the string.
public void trim()
{
value_ = value_.trim();
originalValue_ = value_;
}
public String getNString() throws SQLException
{
// Truncate to the max field size if needed.
// Do not signal a DataTruncation per the spec.
int maxFieldSize = settings_.getMaxFieldSize();
if((value_.length() > maxFieldSize) && (maxFieldSize > 0))
{
return value_.substring(0, maxFieldSize);
}
else
{
return value_;
}
}
/* ifdef JDBC40
public RowId getRowId() throws SQLException
{
//truncated_ = 0; outOfBounds_ = false;
//try
//{
// return new AS400JDBCRowId(BinaryConverter.stringToBytes(value_));
//}
//catch(NumberFormatException nfe)
//{
// this string contains non-hex characters
// JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH, nfe);
// return null;
//}
//Decided this is of no use because rowid is so specific to the dbms internals.
//And there are issues in length and difficulties in converting to a
//valid rowid that is useful.
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
return null;
}
public SQLXML getSQLXML() throws SQLException
{
//This is written in terms of getString(), since it will
// handle truncating to the max field size if needed.
truncated_ = 0; outOfBounds_ = false;
return new AS400JDBCSQLXML(getString());
}
endif */
public void saveValue() {
savedValue_ = originalValue_;
}
}