/// <summary>
/// Adds a table operation that retrieves an entity with the specified partition key and row key to the batch operation.
/// </summary>
/// <typeparam name="R">The return type which the specified <see cref="EntityResolver"/> will resolve the given entity to.</typeparam>
/// <param name="batch">The input <see cref="TableBatchOperation"/>, which acts as the <c>this</c> instance for the extension method.</param>
/// <param name="partitionKey">A string containing the partition key of the entity to be retrieved.</param>
/// <param name="rowkey">A string containing the row key of the entity to be retrieved.</param>
/// <param name="resolver">The <see cref="EntityResolver{R}"/> implementation to project the entity to retrieve as a particular type in the result.</param>
public static void Retrieve <R>(this TableBatchOperation batch, string partitionKey, string rowkey, EntityResolver <R> resolver)
{
CommonUtils.AssertNotNull("partitionKey", partitionKey);
CommonUtils.AssertNotNull("rowkey", rowkey);
// Add the table operation.
batch.Add(new TableOperation(null /* entity */, TableOperationType.Retrieve)
{
RetrievePartitionKey = partitionKey, RetrieveRowKey = rowkey, RetrieveResolver = (pk, rk, ts, prop, etag) => resolver(pk, rk, ts, prop, etag)
});
}
/// <summary>
/// Adds a table operation that retrieves an entity with the specified partition key and row key to the batch operation. The entity will be de-serialized into the specified class type which extends <see cref="ITableEntity"/>.
/// </summary>
/// <typeparam name="TElement">The class of type for the entity to retrieve.</typeparam>
/// <param name="batch">The input <see cref="TableBatchOperation"/>, which acts as the <c>this</c> instance for the extension method.</param>
/// <param name="partitionKey">A string containing the partition key of the entity to be retrieved.</param>
/// <param name="rowkey">A string containing the row key of the entity to be retrieved.</param>
public static void Retrieve <TElement>(this TableBatchOperation batch, string partitionKey, string rowkey) where TElement : ITableEntity
{
CommonUtils.AssertNotNull("partitionKey", partitionKey);
CommonUtils.AssertNotNull("rowkey", rowkey);
// Add the table operation.
batch.Add(new TableOperation(null /* entity */, TableOperationType.Retrieve)
{
RetrievePartitionKey = partitionKey, RetrieveRowKey = rowkey, RetrieveResolver = (pk, rk, ts, prop, etag) => EntityUtilities.ResolveEntityByType <TElement>(pk, rk, ts, prop, etag)
});
}
