public ClobInputStream(JDBCClobClient clob, long offset, long length, int blockSize)
throws SQLException {
if (!JDBCClobClient.isInLimits(clob.length(), offset, length)) {
throw Util.outOfRangeArgument();
}
this.clob = clob;
this.availableLength = offset + length;
this.currentPosition = offset;
this.streamBlockSize = blockSize;
}
private void readIntoBuffer() throws SQLException {
long readLength = availableLength - currentPosition;
if (readLength <= 0) {}
if (readLength > streamBlockSize) {
readLength = streamBlockSize;
}
buffer = clob.getChars(currentPosition, (int) readLength);
bufferOffset = currentPosition;
}
private void checkClosed() throws IOException {
if (isClosed || clob.isClosed()) {
throw new IOException(Error.getMessage(ErrorCode.BLOB_STREAM_IS_CLOSED));
}
}
private Result newColumnResult(long position, int count) throws SQLException {
int mArraySize = 0;
String mArrayStruct = data.getTypeStructure();
ArrayList<Integer> dimSize = getDimSize(mArrayStruct);
ArrayList<Integer> iterIndex = new ArrayList<>(); // go through all the array values
for (int i = 0; i < dimSize.size(); i++) {
mArraySize += dimSize.get(i);
}
// tests if the required elements exist. The limits are determined
// by computing the product of each dimension's size
if (!JDBCClobClient.isInLimits(mArraySize, position, count)) {
throw JDBCUtil.outOfRangeArgument();
}
Type[] types = new Type[2];
types[0] = Type.SQL_VARCHAR;
types[1] = elementType;
ResultMetaData meta = ResultMetaData.newSimpleResultMetaData(types);
meta.columnLabels = new String[] {"C1", "C2"};
meta.colIndexes = new int[] {-1, -1};
meta.columns = new ColumnBase[2];
ColumnBase column = new ColumnBase("", "", "", "");
column.setType(types[0]);
meta.columns[0] = column;
column = new ColumnBase("", "", "", "");
column.setType(types[1]);
meta.columns[1] = column;
RowSetNavigatorClient navigator = new RowSetNavigatorClient();
for (int i = (int) position; i < position + count; i++) {
Object[] rowData = new Object[2];
rowData[0] = Integer.valueOf(i + 1);
try {
rowData[1] = data.getCell(new RasPoint(1, 1));
} catch (RasDimensionMismatchException | RasIndexOutOfBoundsException e) {
System.err.println("Can't get the cell at point (1, 1)");
e.printStackTrace();
}
navigator.add(rowData);
}
Result result = Result.newDataResult(meta);
result.setNavigator(navigator);
return result;
}
