HashMap hm = new HashMap();
try {
File vdt = new File(path, Constants.charVDTTableName);
if (vdt.canRead()) {
DcwRecordFile charvdt = new DcwRecordFile(vdt.toString());
int charcols[] = charvdt.lookupSchema(CoverageTable.VDTColumnNames,
true,
CoverageTable.charVDTschematype,
CoverageTable.charVDTschemalength,
false);