return the number of columns in this file . concode_field_sep ColumnFileMetaData metaData concode_elem_sep Map<String,ColumnDescriptor> columnsByName concode_elem_sep Input file concode_elem_sep ColumnDescriptor[] columns concode_elem_sep long rowCount concode_elem_sep int columnCount concode_field_sep ColumnMetaData[] getColumnMetaData concode_elem_sep ColumnMetaData getColumnMetaData concode_elem_sep ColumnMetaData getColumnMetaData concode_elem_sep long getRowCount concode_elem_sep List<ColumnMetaData> getRoots concode_elem_sep void readColumnMetaData concode_elem_sep ColumnValues<T> getValues concode_elem_sep ColumnValues<T> getValues concode_elem_sep void readColumnStarts concode_elem_sep ColumnDescriptor<T> getColumn concode_elem_sep ColumnFileMetaData getMetaData concode_elem_sep void readHeader concode_elem_sep void readMagic concode_elem_sep void close
long function ( ) { return columnCount ; }