/// <summary>Creates a data service query for function which return collection of data.</summary>
/// <typeparam name="T">The type returned by the query</typeparam>
/// <param name="functionName">The function name.</param>
/// <param name="isComposable">Whether this query is composable.</param>
/// <param name="parameters">The function parameters.</param>
/// <returns>A new <see cref="Microsoft.OData.Client.DataServiceQuery{TElement}" /> instance that represents the function call.</returns>
public virtual DataServiceQuery <T> CreateFunctionQuery <T>(string functionName, bool isComposable, params UriOperationParameter[] parameters)
{
Dictionary <string, string> operationParameters = this.Context.SerializeOperationParameters(parameters);
ResourceSetExpression rse = new ResourceSetExpression(typeof(IOrderedQueryable <T>), this.Expression, null, typeof(T), null, CountOption.None, null, null, null, null, functionName, operationParameters, false);
return(new DataServiceQuery <T> .DataServiceOrderedQuery(rse, new DataServiceQueryProvider(this.Context), isComposable));
}
/// <summary>
/// Creates a navigation resource expression
/// </summary>
/// <param name="expressionType">The expression type.</param>
/// <param name="type">the return type of the expression</param>
/// <param name="source">the source expression</param>
/// <param name="memberExpression">property member name</param>
/// <param name="resourceType">the element type of the resource</param>
/// <param name="expandPaths">expand paths for resource set</param>
/// <param name="countOption">count query option for the resource</param>
/// <param name="customQueryOptions">custom query options for resource</param>
/// <param name="projection">the projection expression</param>
/// <param name="resourceTypeAs">TypeAs type</param>
/// <param name="uriVersion">version of the Uri from the expand and projection paths</param>
/// <param name="operationName">The operation name.</param>
/// <param name="operationParameters">The operation parameter names and parameters pair for Resource</param>
/// <returns>The navigation resource expression.</returns>
internal static QueryableResourceExpression CreateNavigationResourceExpression(ExpressionType expressionType, Type type, Expression source, Expression memberExpression, Type resourceType, List <string> expandPaths, CountOption countOption, Dictionary <ConstantExpression, ConstantExpression> customQueryOptions, ProjectionQueryOptionExpression projection, Type resourceTypeAs, Version uriVersion, string operationName, Dictionary <string, string> operationParameters)
{
Debug.Assert(
expressionType == (ExpressionType)ResourceExpressionType.RootResourceSet || expressionType == (ExpressionType)ResourceExpressionType.ResourceNavigationProperty || expressionType == (ExpressionType)ResourceExpressionType.RootSingleResource,
"Expression type is not one of following: RootResourceSet, ResourceNavigationProperty, RootSingleResource.");
QueryableResourceExpression expression = null;
if (expressionType == (ExpressionType)ResourceExpressionType.RootResourceSet || expressionType == (ExpressionType)ResourceExpressionType.ResourceNavigationProperty)
{
expression = new ResourceSetExpression(type, source, memberExpression, resourceType, expandPaths, countOption, customQueryOptions, projection, resourceTypeAs, uriVersion);
}
if (expressionType == (ExpressionType)ResourceExpressionType.RootSingleResource)
{
expression = new SingletonResourceExpression(type, source, memberExpression, resourceType, expandPaths, countOption, customQueryOptions, projection, resourceTypeAs, uriVersion);
}
if (expression != null)
{
expression.OperationName = operationName;
expression.OperationParameters = operationParameters;
return(expression);
}
return(null);
}
