private IOrganizationService GetService(IExecutionContext context)
{
var result = this.client ?? (this.client = new CrmServiceClient(this.connectionString ?? (string)context.GetDefault("connectionstring", this)));
if (!result.IsReady)
{
throw new Exception($"Unable to connect to CRM: {result.LastCrmError}.");
}
return(result);
}
/// <summary>
/// Retrieves the data from multiple sources as an <see cref="IAsyncEnumerable{T}"/>.
/// </summary>
/// <param name="context">
/// The context.
/// </param>
/// <param name="rowBuilder">
/// The row builder.
/// </param>
/// <param name="query">
/// The join query expression. Can be <c>null</c>.
/// </param>
/// <returns>
/// A task returning the data set.
/// </returns>
IAsyncEnumerable <Row> ISupportsJoin.GetRows(IExecutionContext context, IRowBuilder rowBuilder, IJoinQuery query)
{
throw new NotSupportedException("Join support is not yet implemented.");
}
/// <summary>
/// Retrieves the data from the source as an <see cref="T:ConnectQl.AsyncEnumerables.IAsyncEnumerable`1" />.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="rowBuilder">The row builder.</param>
/// <param name="query">The query expression. Can be <c>null</c>.</param>
/// <returns>
/// A task returning the data set.
/// </returns>
public IAsyncEnumerable <Row> GetRows(IExecutionContext context, IRowBuilder rowBuilder, IQuery query)
{
this.GetQueryExpression(query.GetFilter(context));
return(context.CreateEmptyAsyncEnumerable <Row>());
}
/// <summary>
/// Checks if this data source supports the join query.
/// </summary>
/// <param name="context">
/// The execution context.
/// </param>
/// <param name="query">
/// The query to check.
/// </param>
/// <returns><c>true</c> if the <see cref="ISupportsJoin"/> supports the specified <paramref name="query"/>, <c>false</c> otherwise.</returns>
bool ISupportsJoin.SupportsJoinQuery(IExecutionContext context, IJoinQuery query)
{
return(false);
}
/// <summary>
/// Gets the descriptor for this data source.
/// </summary>
/// <param name="sourceAlias">The data source source alias.</param>
/// <param name="context">The execution context.</param>
/// <returns>
/// The <see cref="T:System.Threading.Tasks.Task" />.
/// </returns>
public async Task <IDataSourceDescriptor> GetDataSourceDescriptorAsync(string sourceAlias, IExecutionContext context)
{
return(await Task.Run(() =>
{
var metadata = ((RetrieveEntityResponse)this.GetService(context).Execute(new RetrieveEntityRequest
{
LogicalName = this.entityName,
EntityFilters = EntityFilters.Attributes
})).EntityMetadata;
return Descriptor.ForDataSource(
sourceAlias,
metadata.Attributes.Select(a => Descriptor.ForColumn(a.LogicalName, EntityDataSource.ToType(a.AttributeType), a.DisplayName?.UserLocalizedLabel?.Label)).Where(a => a.Type != null));
}));
}
