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The Open Source version of the IBM Toolbox for Java
///////////////////////////////////////////////////////////////////////////////
//
// JTOpen (IBM Toolbox for Java - OSS version)
//
// Filename: SQLClobLocator.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) 1997-2017 International Business Machines Corporation and
// others. All rights reserved.
//
///////////////////////////////////////////////////////////////////////////////
package com.ibm.as400.access;
import java.io.*;
import java.math.BigDecimal;
import java.sql.Array;
import java.sql.Blob;
import java.sql.Clob;
import java.sql.Date;
/* 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;
final class SQLClobLocator implements SQLLocator
{
static final String copyright = "Copyright (C) 1997-2006 International Business Machines Corporation and others.";
private AS400JDBCConnection connection_;
private SQLConversionSettings settings_;
private ConvTable converter_;
private int id_;
private JDLobLocator locator_;
private int maxLength_;
private int truncated_;
private boolean outOfBounds_;
private int columnIndex_;
private String value_; //@loch //Note that value_ is not used as the output for a ResultSet.getX() call. We Get the value from a call to the JDLocator (not from value_) and not from the savedObject_, unless resultSet.updateX(obj1) is called followed by a obj2 = resultSet.getX()
private String savedValue_;
private Object savedObject_; // This is the AS400JDBCBlobLocator or InputStream or
// whatever got set into us.
// After the object is written to the server, this will be a string
private int scale_; // This is actually the length that got set into us.
private boolean savedObjectWrittenToServer_ = false;
SQLClobLocator(AS400JDBCConnection connection,
int id,
int maxLength,
SQLConversionSettings settings,
ConvTable converter,
int columnIndex)
{
connection_ = connection;
id_ = id;
locator_ = new JDLobLocator(connection, id, maxLength, false);
maxLength_ = maxLength;
truncated_ = 0; outOfBounds_ = false;
settings_ = settings;
converter_ = converter;
columnIndex_ = columnIndex;
}
public Object clone()
{
return new SQLClobLocator(connection_, id_, maxLength_, settings_, converter_, columnIndex_);
}
public void setHandle(int handle)
{
locator_.setHandle(handle);
// @J5A reset savedObject after setting handle
savedObject_ = null;
savedObjectWrittenToServer_ = false;
}
//@loch
public int getHandle()
{
return locator_.getHandle();
}
//---------------------------------------------------------//
// //
// CONVERSION TO AND FROM RAW BYTES //
// //
//---------------------------------------------------------//
public void convertFromRawBytes(byte[] rawBytes, int offset,
ConvTable converter) throws SQLException {
convertFromRawBytes(rawBytes, offset, converter, false);
}
public void convertFromRawBytes(byte[] rawBytes, int offset, ConvTable ccsidConverter, boolean ignoreConversionErrors)
throws SQLException
{
int locatorHandle = BinaryConverter.byteArrayToInt(rawBytes, offset);
locator_.setHandle(locatorHandle);
locator_.setColumnIndex(columnIndex_);
// @J5A reset saved handle after setting new value
savedObject_ = null;
savedObjectWrittenToServer_ = false;
}
//@CRS - This is only called from AS400JDBCPreparedStatement in one place.
public void convertToRawBytes(byte[] rawBytes, int offset, ConvTable ccsidConverter)
throws SQLException
{
BinaryConverter.intToByteArray(locator_.getHandle(), rawBytes, offset);
// Now we write our saved data to the system, because the prepared statement is being executed.
// We used to write the data to the system on the call to set(), but this messed up
// batch executes, since the host server only reserves temporary space for locator handles one row at a time.
// See the toObject() method in this class for more details.
if((! savedObjectWrittenToServer_ ) && (savedObject_ != null)) writeToServer();
}
/**
validates that raw truncated data is correct. The data is corrected if is not correct.
This is only used when converting to MIXED CCSID and UTF-8.
@param rawBytes the raw bytes for the system.
@param offset the offset into the byte array.
@param ccsidConverter the converter.
* @throws SQLException
**/
public void validateRawTruncatedData(byte[] rawBytes, int offset, ConvTable ccsidConverter) {
// Most data type do not need to validate truncated data. Just return.
}
//---------------------------------------------------------//
// //
// SET METHODS //
// //
//---------------------------------------------------------//
public void set(Object object, Calendar calendar, int scale)
throws SQLException
{
//@selins1 make same as SQLClob
// If it's a String we check for data truncation.
if(object instanceof String)
{
String s = (String)object;
int length = s.length();
truncated_ = (length > maxLength_ ? length-maxLength_ : 0);
outOfBounds_ = false;
}
else if( !(object instanceof Reader) &&
!(object instanceof InputStream) &&
( !(object instanceof Clob))
/*ifdef JDBC40
&& !(object instanceof SQLXML)
endif*/
)
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
}
savedObject_ = object;
savedObjectWrittenToServer_ = false;
if(scale != -1) scale_ = scale; // Skip resetting it if we don't know the real length
}
//@loch method to temporary convert from object input to output before even going to host (writeToServer() does the conversion needed before writing to host)
//This will only be used when resultSet.updateX(obj1) is called followed by a obj2 = resultSet.getX()
//Purpose is to do a local type conversion from obj1 to obj2 like other non-locator lob types
private void doConversion()
throws SQLException
{
int length_ = scale_;
if( length_ == -1)
{
try{
//try to get length from locator
length_ = (int)locator_.getLength();
}catch(Exception e){ }
}
try
{
Object object = savedObject_;
if(savedObject_ instanceof String)
{
value_ = (String)object;
}
else if(object instanceof Reader)
{
value_ = SQLDataBase.getStringFromReader((Reader)object, length_, this);
// Once we read the object, it cannot be read again. Save the new value
savedObject_ = value_;
}
else if( object instanceof Clob)
{
// Handle updateable locator
if(object instanceof AS400JDBCClobLocator)
{
AS400JDBCClobLocator clob = (AS400JDBCClobLocator)object;
//Synchronize on a lock so that the user can't keep making updates
//to the clob while we are taking updates off the vectors.
synchronized(clob)
{
// See if we saved off our real object from earlier.
if(clob.savedObject_ != null)
{
savedObject_ = clob.savedObject_;
savedObjectWrittenToServer_ = false;
scale_ = clob.savedScale_;
if (! ( savedObject_ instanceof AS400JDBCClobLocator)) {
doConversion();
return;
}
}
}
}
Clob clob = (Clob)object;
value_ = clob.getSubString(1, (int)clob.length());
}
else if (object instanceof InputStream) {
if (length_ > 0) {
value_ = JDUtilities.streamToString((InputStream) object, length_, "UTF-8");
} else {
value_ = JDUtilities.streamToString((InputStream) object, "UTF-8");
}
savedObject_ = value_;
}
/* ifdef JDBC40
else if( object instanceof SQLXML )
{
SQLXML xml = (SQLXML)object;
value_ = xml.getString();
}
endif */
else
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
}
// Truncate if necessary.
int valueLength = value_.length();
if(valueLength > maxLength_)
{
value_ = value_.substring(0, maxLength_);
}
}
finally
{
//nothing
}
}
private void writeToServer()
throws SQLException
{
try
{
Object object = savedObject_;
if(object instanceof String)
{
String string = (String)object;
int bidiStringType = settings_.getBidiStringType();
if(bidiStringType == -1) bidiStringType = converter_.bidiStringType_;
BidiConversionProperties bidiConversionProperties = new BidiConversionProperties(bidiStringType); //@KBA
bidiConversionProperties.setBidiImplicitReordering(settings_.getBidiImplicitReordering()); //@KBA
bidiConversionProperties.setBidiNumericOrderingRoundTrip(settings_.getBidiNumericOrdering()); //@KBA
byte[] bytes = converter_.stringToByteArray(string, bidiConversionProperties); //@KBC changed to use bidiConversionProperties instead of bidiStringType
locator_.writeData(0L, bytes, true); //@K1C
}
else if(object instanceof Reader)
{
int length = scale_; // hack to get the length into the set method
// Need to write even if there are 0 bytes in case we are batching and
// the host server reuses the same handle for the previous locator; otherwise,
// we'll have data in the current row from the previous row.
if (length == 0)
{
locator_.writeData(0, new byte[0], 0, 0, true); //@K1C
}
else if(length > 0)
{
int blockSize = length < AS400JDBCPreparedStatement.LOB_BLOCK_SIZE ? length : AS400JDBCPreparedStatement.LOB_BLOCK_SIZE;
String string = JDUtilities.readerToString((Reader)savedObject_);
savedObject_ = string;
int bidiStringType = settings_.getBidiStringType();
if(bidiStringType == -1) bidiStringType = converter_.bidiStringType_;
BidiConversionProperties bidiConversionProperties = new BidiConversionProperties(bidiStringType);
bidiConversionProperties.setBidiImplicitReordering(settings_.getBidiImplicitReordering());
bidiConversionProperties.setBidiNumericOrderingRoundTrip(settings_.getBidiNumericOrdering());
byte[] bytes = converter_.stringToByteArray(string, bidiConversionProperties);
int totalBytesWritten = 0;
int bytesToWrite = blockSize;
int totalLengthToWrite = length;
if (bytes.length < totalLengthToWrite) {
totalLengthToWrite = bytes.length;
}
while((bytesToWrite > 0) &&
(totalBytesWritten < totalLengthToWrite)) {
locator_.writeData((long)totalBytesWritten, bytes, totalBytesWritten, bytesToWrite, true); // totalBytesRead is our offset. @K1C
totalBytesWritten += bytesToWrite;
int bytesRemaining = totalLengthToWrite - totalBytesWritten;
if(bytesRemaining < bytesToWrite) {
bytesToWrite = bytesRemaining;
}
}
if(totalBytesWritten < length) {
// a length longer than the stream was specified
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
}
}
else if(length == -2) { //@readerlen new else-if block (read all data)
String string = JDUtilities.readerToString((Reader)savedObject_);
savedObject_ = string;
int bidiStringType = settings_.getBidiStringType();
if(bidiStringType == -1) bidiStringType = converter_.bidiStringType_;
BidiConversionProperties bidiConversionProperties = new BidiConversionProperties(bidiStringType);
bidiConversionProperties.setBidiImplicitReordering(settings_.getBidiImplicitReordering());
bidiConversionProperties.setBidiNumericOrderingRoundTrip(settings_.getBidiNumericOrdering());
byte[] bytes = converter_.stringToByteArray(string, bidiConversionProperties);
locator_.writeData(0L, bytes, true);
}
else
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
}
}
else if(object instanceof InputStream)
{
int length = scale_; // hack to get the length into the set method
// Need to write even if there are 0 bytes in case we are batching and
// the host server reuses the same handle for the previous locator; otherwise,
// we'll have data in the current row from the previous row.
if (length == 0)
{
locator_.writeData(0, new byte[0], 0, 0, true); //@K1C
}
else if(length > 0)
{
InputStream stream = (InputStream)savedObject_;
int blockSize = length < AS400JDBCPreparedStatement.LOB_BLOCK_SIZE ? length : AS400JDBCPreparedStatement.LOB_BLOCK_SIZE;
byte[] byteBuffer = new byte[blockSize];
try
{
int totalBytesRead = 0;
int bytesRead = stream.read(byteBuffer, 0, blockSize);
while(bytesRead > -1 && totalBytesRead < length)
{
locator_.writeData((long)totalBytesRead, byteBuffer, 0, bytesRead, true); // totalBytesRead is our offset. @K1C
totalBytesRead += bytesRead;
int bytesRemaining = length - totalBytesRead;
if(bytesRemaining < blockSize)
{
blockSize = bytesRemaining;
}
bytesRead = stream.read(byteBuffer, 0, blockSize);
}
if(totalBytesRead < length)
{
// a length longer than the stream was specified
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
}
}
catch(IOException ie)
{
JDError.throwSQLException(this, JDError.EXC_INTERNAL, ie);
}
}
else if(length == -2)//@readerlen new else-if block (read all data)
{
InputStream stream = (InputStream)savedObject_;
int blockSize = AS400JDBCPreparedStatement.LOB_BLOCK_SIZE;
byte[] byteBuffer = new byte[blockSize];
try
{
int totalBytesRead = 0;
int bytesRead = stream.read(byteBuffer, 0, blockSize);
while(bytesRead > -1)
{
locator_.writeData((long)totalBytesRead, byteBuffer, 0, bytesRead, true); // totalBytesRead is our offset. @K1C
totalBytesRead += bytesRead;
bytesRead = stream.read(byteBuffer, 0, blockSize);
}
}
catch(IOException ie)
{
JDError.throwSQLException(this, JDError.EXC_INTERNAL, ie);
}
}
else
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
}
}
else if( object instanceof Clob) //@H0A check for jdbc level to know if lobs exist
{
//@G5A Start new code for updateable locator case
boolean set = false;
if(object instanceof AS400JDBCClobLocator)
{
AS400JDBCClobLocator clob = (AS400JDBCClobLocator)object;
//Synchronize on a lock so that the user can't keep making updates
//to the clob while we are taking updates off the vectors.
synchronized(clob)
{
// See if we saved off our real object from earlier.
if(clob.savedObject_ != null)
{
savedObject_ = clob.savedObject_;
savedObjectWrittenToServer_ = false;
scale_ = clob.savedScale_;
clob.savedObject_ = null;
writeToServer();
return;
}
}
}
//@G5A If the code for updateable lob locators did not run, then run old code.
if(!set)
{
Clob clob = (Clob)object;
int length = (int)clob.length();
String substring = clob.getSubString(1, length);
savedObject_ = substring;
// This code used to assume that the input length was the same as the output length
// locator_.writeData(0L, converter_.stringToByteArray(substring), 0, length, true); //@K1C
// @J5C
byte[] writeByteArray = converter_.stringToByteArray(substring);
locator_.writeData(0L, writeByteArray, 0, writeByteArray.length, true);
set = true;
}
else
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
}
}
/*ifdef JDBC40
else if( object instanceof SQLXML ) //@PDA jdbc40
{
SQLXML xml = (SQLXML)object;
String stringVal = xml.getString();
savedObject_ = stringVal;
// @J5C
byte[] outByteArray = converter_.stringToByteArray(stringVal);
locator_.writeData(0L, outByteArray, 0, outByteArray.length, true);
}
endif */
else
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
}
}
finally
{
// Do not delete the saved object after writing it to
// the server. We may still need it if we need to
// re-execute the statement.
// savedObject_ = null;
savedObjectWrittenToServer_ = true;
}
scale_ = (int)locator_.getLength();
}
//---------------------------------------------------------//
// //
// DESCRIPTION OF SQL TYPE //
// //
//---------------------------------------------------------//
public int getSQLType()
{
return SQLData.CLOB_LOCATOR;
}
public String getCreateParameters()
{
return AS400JDBCDriver.getResource("MAXLENGTH",null);
}
public int getDisplaySize()
{
return maxLength_;
}
public String getJavaClassName()
{
return "com.ibm.as400.access.AS400JDBCClobLocator";
}
public String getLiteralPrefix()
{
return null;
}
public String getLiteralSuffix()
{
return null;
}
public String getLocalName()
{
return "CLOB";
}
public int getMaximumPrecision()
{
return AS400JDBCDatabaseMetaData.MAX_LOB_LENGTH; //@xml3 // the DB2 SQL reference says this should be 2147483647 but we return 1 less to allow for NOT NULL columns
}
public int getMaximumScale()
{
return 0;
}
public int getMinimumScale()
{
return 0;
}
public int getNativeType()
{
return 964;
}
public int getPrecision()
{
return maxLength_;
}
public int getRadix()
{
return 0;
}
public int getScale()
{
return 0;
}
public int getType()
{
return java.sql.Types.CLOB;
}
public String getTypeName()
{
return "CLOB";
}
public boolean isSigned()
{
return false;
}
public boolean isText()
{
return true;
}
public int getActualSize()
{
return maxLength_;
}
public int getTruncated()
{
return truncated_;
}
public void clearTruncated() {
truncated_ = 0;
}
public void clearOutOfBounds() {
outOfBounds_ = false;
}
public boolean getOutOfBounds() {
return outOfBounds_;
}
//---------------------------------------------------------//
// //
// CONVERSIONS TO JAVA TYPES //
// //
//---------------------------------------------------------//
public InputStream getAsciiStream()
throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
try
{
if(savedObject_ != null)//@loch
{ //@loch
//get value from RS.updateX(value)
doConversion(); //@loch
truncated_ = 0; outOfBounds_ = false; //@loch
return new ByteArrayInputStream(ConvTable.getTable(819, null).stringToByteArray(value_));//@loch
} //@loch
return new ReaderInputStream(new ConvTableReader(new AS400JDBCInputStream(new JDLobLocator(locator_)), converter_.getCcsid()), 819); // ISO-8859-1.
}
catch(UnsupportedEncodingException e)
{
JDError.throwSQLException(this, JDError.EXC_INTERNAL, e);
return null;
}
}
public BigDecimal getBigDecimal(int scale)
throws SQLException
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
return null;
}
public InputStream getBinaryStream()
throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
try
{
if(savedObject_ != null)//@loch
{ //@loch
//get value from RS.updateX(value)
doConversion(); //@loch
truncated_ = 0; outOfBounds_ = false; //@loch
return new HexReaderInputStream(new StringReader(value_)); //@loch
} //@loch
return new HexReaderInputStream(new ConvTableReader(new AS400JDBCInputStream(new JDLobLocator(locator_)), converter_.getCcsid()));
}
catch(UnsupportedEncodingException e)
{
JDError.throwSQLException(this, JDError.EXC_INTERNAL, e);
return null;
}
}
public Blob getBlob()
throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
try
{
byte[] bytes = BinaryConverter.stringToBytes(getString());
return new AS400JDBCBlob(bytes, bytes.length);
}
catch(NumberFormatException nfe)
{
// this Clob contains non-hex characters
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH, nfe);
return null;
}
}
public boolean getBoolean()
throws SQLException
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
return false;
}
public byte getByte()
throws SQLException
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
return 0;
}
public byte[] getBytes()
throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
try
{
return BinaryConverter.stringToBytes(getString());
}
catch(NumberFormatException nfe)
{
// this Clob contains non-hex characters
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH, nfe);
return null;
}
}
public Reader getCharacterStream()
throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
try
{
if(savedObject_ != null)//@loch
{ //@loch
//get value from RS.updateX(value)
doConversion(); //@loch
truncated_ = 0; outOfBounds_ = false; //@loch
return new StringReader(value_); //@loch
} //@loch
return new ConvTableReader(new AS400JDBCInputStream(new JDLobLocator(locator_)), converter_.getCcsid());
}
catch(UnsupportedEncodingException e)
{
JDError.throwSQLException(this, JDError.EXC_INTERNAL, e);
return null;
}
}
public Clob getClob()
throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
if(savedObject_ != null)//@loch
{ //@loch
//get value from RS.updateX(value)
doConversion(); //@loch
truncated_ = 0; outOfBounds_ = false; //@loch
return new AS400JDBCClob(value_, maxLength_); //@loch
} //@loch
AS400JDBCClobLocator locatorReturn = new AS400JDBCClobLocator(new JDLobLocator(locator_), converter_, savedObject_, scale_);
if (ConvTable.isMixedCCSID(converter_.ccsid_)) {
// Since this is a mixed CCSID, the locator APIs with length, etc.. do not work correctly
// @J5A We read the whole thing and convert to a local clob.
savedObject_ = locatorReturn.getSubString((long)1, (int) locatorReturn.length());
savedObjectWrittenToServer_ = false;
return new AS400JDBCClob((String) savedObject_, maxLength_); //@loch
}
return locatorReturn;
}
public Date getDate(Calendar calendar)
throws SQLException
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
return null;
}
public double getDouble()
throws SQLException
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
return 0;
}
public float getFloat()
throws SQLException
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
return 0;
}
public int getInt()
throws SQLException
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
return 0;
}
public long getLong()
throws SQLException
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
return 0;
}
public Object getObject()
throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
// getObject is used by AS400JDBCPreparedStatement for batching, so we save off our InputStream
// inside the AS400JDBCClobLocator. Then, when convertToRawBytes() is called, the writeToServer()
// code checks the AS400JDBCClobLocator's saved InputStream... if it exists, then it writes the
// data out of the InputStream to the system by calling writeToServer() again.
return new AS400JDBCClobLocator(new JDLobLocator(locator_), converter_, savedObject_, scale_);
}
public Object getBatchableObject() throws SQLException {
return getObject();
}
public short getShort()
throws SQLException
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
return 0;
}
public String getString()
throws SQLException
{
if(savedObject_ != null)//@loch
{ //@loch
//get value from RS.updateX(value)
doConversion(); //@loch
truncated_ = 0; outOfBounds_ = false; //@loch
return value_; //@loch
} //@loch
DBLobData data = locator_.retrieveData(0, locator_.getMaxLength());
String value = converter_.byteArrayToString(data.getRawBytes(),
data.getOffset(),
data.getLength());
truncated_ = 0; outOfBounds_ = false; //@pda make consistent with other SQLData Clob classes
return value;
}
public Time getTime(Calendar calendar)
throws SQLException
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
return null;
}
public Timestamp getTimestamp(Calendar calendar)
throws SQLException
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
return null;
}
public InputStream getUnicodeStream()
throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
try
{
if(savedObject_ != null)//@loch
{ //@loch
//get value from RS.updateX(value)
doConversion(); //@loch
truncated_ = 0; outOfBounds_ = false; //@loch
return new ReaderInputStream(new StringReader(value_), 13488); //@loch
} //@loch
return new ReaderInputStream(new ConvTableReader(new AS400JDBCInputStream(new JDLobLocator(locator_)), converter_.getCcsid()), 13488);
}
catch(UnsupportedEncodingException e)
{
JDError.throwSQLException(JDError.EXC_INTERNAL, e);
return null;
}
}
//@pda jdbc40
public Reader getNCharacterStream() throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
if(savedObject_ != null)//@loch
{ //@loch
//get value from RS.updateX(value)
doConversion(); //@loch
truncated_ = 0; outOfBounds_ = false; //@loch
return new StringReader(value_); //@loch
} //@loch
try
{
return new ConvTableReader(new AS400JDBCInputStream(new JDLobLocator(locator_)), converter_.getCcsid());
}
catch(UnsupportedEncodingException e)
{
JDError.throwSQLException(this, JDError.EXC_INTERNAL, e);
return null;
}
}
//@pda jdbc40
/* ifdef JDBC40
public NClob getNClob() throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
if(savedObject_ != null)//@loch
{ //@loch
//get value from RS.updateX(value)
doConversion(); //@loch
truncated_ = 0; outOfBounds_ = false; //@loch
return new AS400JDBCNClob(value_, maxLength_); //@loch
} //@loch
AS400JDBCNClobLocator locatorReturn = new AS400JDBCNClobLocator(new JDLobLocator(locator_), converter_, savedObject_, scale_);
if (ConvTable.isMixedCCSID(converter_.ccsid_)) {
// Since this is a mixed CCSID, the locator APIs with length, etc.. do not work correctly
// @J5A We read the whole thing and convert to a local clob.
savedObject_ = locatorReturn.getSubString((long)1, (int) locatorReturn.length());
savedObjectWrittenToServer_ = false;
return new AS400JDBCNClob((String) savedObject_, maxLength_); //@loch
}
return locatorReturn;
}
endif */
//@pda jdbc40
public String getNString() throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
if(savedObject_ != null)//@loch
{ //@loch
//get value from RS.updateX(value)
doConversion(); //@loch
truncated_ = 0; outOfBounds_ = false; //@loch
return value_; //@loch
} //@loch
DBLobData data = locator_.retrieveData(0, locator_.getMaxLength());
String value = converter_.byteArrayToString(data.getRawBytes(),
data.getOffset(),
data.getLength());
return value;
}
//@pda jdbc40
/* ifdef JDBC40
public RowId getRowId() throws SQLException
{
//truncated_ = 0; outOfBounds_ = false;
//try
//{
// return new AS400JDBCRowId(BinaryConverter.stringToBytes(getString()));
//}
//catch(NumberFormatException nfe)
//{
// this Clob contains non-hex characters
// JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH, nfe);
// return null;
//}
//decided this is of no use
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
return null;
}
endif */
//@pda jdbc40
/* ifdef JDBC40
public SQLXML getSQLXML() throws SQLException
{
truncated_ = 0; outOfBounds_ = false;
if(savedObject_ != null)//@loch
{ //@loch
//get value from RS.updateX(value)
doConversion(); //@loch
truncated_ = 0; outOfBounds_ = false; //@loch
return new AS400JDBCSQLXML(value_, maxLength_); //@loch
} //@loch
//return new AS400JDBCSQLXML( getString().toCharArray() );
return new AS400JDBCSQLXMLLocator(new JDLobLocator(locator_), converter_, savedObject_, scale_, false); //@xml3 //@xml4
}
endif */
// @array
public Array getArray() throws SQLException
{
JDError.throwSQLException(this, JDError.EXC_DATA_TYPE_MISMATCH);
return null;
}
public void updateSettings(SQLConversionSettings settings) {
settings_ = settings;
}
public void saveValue() throws SQLException {
if (value_ == null && savedObject_ != null ) {
doConversion();
}
savedValue_ = value_;
}
public Object getSavedValue() {
return savedValue_;
}
}