(TupleMetadata)mTupleList.getMetadataWrapper().getMetadata();
columnCount = metadata.getColumnCount();
colInfo = new ColInfo[columnCount];
for(int i=0; i<columnCount; i++)
{
ColumnMetadata column = metadata.getColumnMetadata(i);
colInfo[i] = new ColInfo();
colInfo[i].setName(column.getName());
colInfo[i].setDisplayName("");
colInfo[i].setOpType("");
colInfo[i].setDataType(
mapSQLTypeToPMMLType(column.getType()));
}
//init statistics values
totalFreq = new int[columnCount];
missingData = new int[columnCount];