question: indicates whether values in the designated column are signed numbers . concode_field_sep Connection m_conn concode_field_sep String getSchemaName concode_elem_sep String getCatalogName concode_elem_sep String getColumnLabel concode_elem_sep String getColumnName concode_elem_sep String getColumnTypeName concode_elem_sep boolean isWritable concode_elem_sep Object unwrap concode_elem_sep String getColumnClassName concode_elem_sep boolean isAutoIncrement concode_elem_sep boolean isReadOnly concode_elem_sep void checkColumnIndex concode_elem_sep Connection getDefaultConnection concode_elem_sep boolean isCurrency concode_elem_sep boolean isSearchable concode_elem_sep Oid getOid concode_elem_sep boolean isCaseSensitive concode_elem_sep String getTableName concode_elem_sep int getColumnType concode_elem_sep boolean isDefinitelyWritable concode_elem_sep int getColumnCount concode_elem_sep int getPrecision concode_elem_sep int getScale concode_elem_sep boolean isWrapperFor concode_elem_sep int isNullable concode_elem_sep int getColumnDisplaySize concode_elem_sep int getFieldLength
target: boolean function ( int arg0 ) { checkColumnIndex ( arg0 ) ; Oid loc0 = this . getOid ( arg0 ) ; return ( loc0 . equals ( TypeOid . INT2 ) || loc0 . equals ( TypeOid . INT4 ) || loc0 . equals ( TypeOid . INT8 ) || loc0 . equals ( TypeOid . FLOAT4 ) || loc0 . equals ( TypeOid . FLOAT8 ) ) ; }