Microsoft.Practices.EnterpriseLibrary.Data.DataAccessor< TResult > Class Template Reference

An abstract class representing an object that wraps a database operation. An Accessor is executed, at which point it will go out to the database and return a IEnumerable<TResult> of whatever type TResult is. More...

Inheritance diagram for Microsoft.Practices.EnterpriseLibrary.Data.DataAccessor< TResult >:

Public Member Functions
abstract IEnumerable< TResult >	Execute (params object[] parameterValues)
	Execute the database operation synchronously, returning the IEnumerable<TResult> sequence containing the resulting objects. More...
abstract IAsyncResult	BeginExecute (AsyncCallback callback, object state, params object[] parameterValues)
	Begin executing the database object asynchronously, returning a IAsyncResult object that can be used to retrieve the result set after the operation completes. More...
abstract IEnumerable< TResult >	EndExecute (IAsyncResult asyncResult)
	Complete an operation started by BeginExecute. More...

Detailed Description

An abstract class representing an object that wraps a database operation. An Accessor is executed, at which point it will go out to the database and return a IEnumerable<TResult> of whatever type TResult is.

Member Function Documentation

BeginExecute()

abstract IAsyncResult Microsoft.Practices.EnterpriseLibrary.Data.DataAccessor< TResult >.BeginExecute ( AsyncCallback  callback, object  state, params object[]  parameterValues  )

pure virtual

Begin executing the database object asynchronously, returning a IAsyncResult object that can be used to retrieve the result set after the operation completes.

Parameters

callback	Callback to execute when the operation's results are available. May be null if you don't wish to use a callback.
state	Extra information that will be passed to the callback. May be null.
parameterValues	Parameters to pass to the database.

This operation will throw if the underlying Database object does not support asynchronous operation.

Exceptions

InvalidOperationException

The underlying database does not support asynchronous operation.

Returns

The IAsyncResult representing this operation.

Implemented in Microsoft.Practices.EnterpriseLibrary.Data.SqlStringAccessor< TResult >, and Microsoft.Practices.EnterpriseLibrary.Data.SprocAccessor< TResult >.

EndExecute()

abstract IEnumerable<TResult> Microsoft.Practices.EnterpriseLibrary.Data.DataAccessor< TResult >.EndExecute ( IAsyncResult  asyncResult )

pure virtual

Complete an operation started by BeginExecute.

Returns

The result sequence.

Implemented in Microsoft.Practices.EnterpriseLibrary.Data.CommandAccessor< TResult >.

Execute()

abstract IEnumerable<TResult> Microsoft.Practices.EnterpriseLibrary.Data.DataAccessor< TResult >.Execute ( params object[]  parameterValues )

pure virtual

Execute the database operation synchronously, returning the IEnumerable<TResult> sequence containing the resulting objects.

Parameters

parameterValues

Parameters to pass to the database.

Returns

The sequence of result objects.

Implemented in Microsoft.Practices.EnterpriseLibrary.Data.SqlStringAccessor< TResult >, and Microsoft.Practices.EnterpriseLibrary.Data.SprocAccessor< TResult >.

---

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

• DataAccessor.cs