/**
* Create a temporary BLOB value from a stream.
*
* @param in the input stream
* @param length the number of characters to read, or -1 for no limit
* @param handler the data handler
* @return the lob value
*/
public static ValueLobDb createTempBlob(InputStream in, long length, DataHandler handler) {
try {
long remaining = Long.MAX_VALUE;
boolean compress = handler.getLobCompressionAlgorithm(Value.BLOB) != null;
if (length >= 0 && length < remaining) {
remaining = length;
}
int len = getBufferSize(handler, compress, remaining);
byte[] buff;
if (len >= Integer.MAX_VALUE) {
buff = IOUtils.readBytesAndClose(in, -1);
len = buff.length;
} else {
buff = DataUtils.newBytes(len);
len = IOUtils.readFully(in, buff, len);
}
if (len <= handler.getMaxLengthInplaceLob()) {
byte[] small = DataUtils.newBytes(len);
System.arraycopy(buff, 0, small, 0, len);
return ValueLobDb.createSmallLob(Value.BLOB, small, small.length);
}
ValueLobDb lob = new ValueLobDb(handler, buff, len, in, remaining);
return lob;
} catch (IOException e) {
throw DbException.convertIOException(e, null);
}
}
/**
* Create a temporary CLOB value from a stream.
*
* @param in the reader
* @param length the number of characters to read, or -1 for no limit
* @param handler the data handler
* @return the lob value
*/
public static ValueLobDb createTempClob(Reader in, long length, DataHandler handler) {
BufferedReader reader;
if (in instanceof BufferedReader) {
reader = (BufferedReader) in;
} else {
reader = new BufferedReader(in, Constants.IO_BUFFER_SIZE);
}
try {
boolean compress = handler.getLobCompressionAlgorithm(Value.CLOB) != null;
long remaining = Long.MAX_VALUE;
if (length >= 0 && length < remaining) {
remaining = length;
}
int len = getBufferSize(handler, compress, remaining);
char[] buff;
if (len >= Integer.MAX_VALUE) {
String data = IOUtils.readStringAndClose(reader, -1);
buff = data.toCharArray();
len = buff.length;
} else {
buff = new char[len];
reader.mark(len);
len = IOUtils.readFully(reader, buff, len);
}
if (len <= handler.getMaxLengthInplaceLob()) {
byte[] small = new String(buff, 0, len).getBytes(Constants.UTF8);
return ValueLobDb.createSmallLob(Value.CLOB, small, len);
}
reader.reset();
ValueLobDb lob = new ValueLobDb(handler, reader, remaining);
return lob;
} catch (IOException e) {
throw DbException.convertIOException(e, null);
}
}
