# FdoIUpdate Class Reference

`#include <IUpdate.h>`

Inheritance diagram for FdoIUpdate:

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List of all members.

## Detailed Description

The FdoIUpdate interface defines the Update command, which modifies instances of a given class that match the specified criteria. Input to the update command includes the name of the class, the list of property name/value pairs to be updated, and the filter criteria by which to identify the instances to be updated. The filter may be specified either as text or as an expression tree (most likely produced by a query builder). The update command can update instances at global scope or nested within an object collection property. Instances at global scope are referred to simply by the class name. Instances at a nested scope (i.e., instances within an object collection property) are referred to by the containing class name, followed by a '.', followed by the object collection property name.

Definition at line 44 of file IUpdate.h.

## Public Member Functions
virtual FDO_API FdoInt32 | Execute ()=0
| Executes the update command and returns the number of modified instances.
virtual FDO_API FdoILockConflictReader * | GetLockConflicts ()=0
| Updating objects might result in lock conflicts if objects to be updated are not exclusively locked for the user attempting to update the object. If objects to be updated are not exclusively locked for the user attempting to update the object, a lock conflict report is generated. The function GetLockConflicts returns a lock conflict reader providing access to the list of lock conflicts that occurred during the execution of the update operation.
virtual FDO_API FdoPropertyValueCollection * | GetPropertyValues ()=0
| Gets the FdoPropertyValueCollection that specifies the names and values of the properties to be updated.
## Friends
class | FdoIConnection

The documentation for this class was generated from the following file:

- IUpdate.h