User Guide: SDKs > VoltMX Iris SDK > Invoking an Object Service > Data Transfer Objects > voltmx.sdk.dto.Column Class
voltmx.sdk.dto.Column Class
This class represents a column in a database table, which is in turn represented by a voltmx.sdk.dto.Table object. It is used when creating a query.
Note: This class is used only for offline Object Services, not for online Object Services.
Constructors
The voltmx.sdk.dto.Column class has one constructor.
voltmx.sdk.dto.Column(table, columnName) Constructor
Signature
voltmx.sdk.dto.Column(table, columnName)
Parameters
| Parameter name | Type | Description |
|---|---|---|
| table | voltmx.sdk.dto.Table | The table containing the column |
| columnName | string | The name of the column |
Example
var dataObject = new voltmx.sdk.dto.DataObject("ObjectName");
var tblDto = new voltmx.sdk.dto.Table("ObjectName", "ObjectName", false);
var selQuery = new voltmx.sdk.dto.SelectQuery("serviceName", tblDto);
var colObj = new voltmx.sdk.dto.Column(tblDto, "field1");
var colObj2 = new voltmx.sdk.dto.Column(tblDto, "field2");
var colObj3 = new voltmx.sdk.dto.Column(tblDto, "field3");
selQuery.addColumn(colObj);
selQuery.addColumn(colObj2);
selQuery.addColumn(colObj3);
dataObject.setSelectQueryObject(selQuery);