/// <summary>
/// Evaluates built-in function.
/// </summary>
/// <param name="resultType">The functionresult type.</param>
/// <param name="function">The built-in function.</param>
/// <param name="arguments">The arguments for the function call.</param>
/// <returns>QueryValue which is the result of function evaluation.</returns>
protected QueryValue EvaluateBuiltInFunction(QueryType resultType, QueryBuiltInFunction function, IEnumerable <QueryExpression> arguments)
{
var argumentValues = this.EvaluateArguments(arguments);
var result = resultType.EvaluationStrategy.EvaluateBuiltInFunction(resultType, function.NamespaceName, function.Name, argumentValues);
return(result);
}
/// <summary>
/// Initializes a new instance of the LinqBuiltInFunction class
/// </summary>
/// <param name="className">The class name that contains the method for the function call.</param>
/// <param name="methodName">The method name corresponding to the function.</param>
/// <param name="queryFunction">The query function metadata.</param>
/// <param name="functionType">Type of the function.</param>
public LinqBuiltInFunction(string className, string methodName, QueryBuiltInFunction queryFunction, LinqBuiltInFunctionKind functionType)
{
ExceptionUtilities.CheckStringArgumentIsNotNullOrEmpty(className, "className");
ExceptionUtilities.CheckStringArgumentIsNotNullOrEmpty(methodName, "methodName");
ExceptionUtilities.CheckArgumentNotNull(queryFunction, "queryFunction");
ExceptionUtilities.CheckArgumentNotNull(functionType, "functionType");
this.ClassName = className;
this.MethodName = methodName;
this.BuiltInFunction = queryFunction;
this.BuiltInFunctionKind = functionType;
}
/// <summary>
/// Initializes a new instance of the LinqBuiltInFunction class
/// </summary>
/// <param name="className">The class name that contains the method for the function call.</param>
/// <param name="methodName">The method name corresponding to the function.</param>
/// <param name="queryFunction">The query function metadata.</param>
/// <param name="functionType">Type of the function.</param>
public LinqBuiltInFunction(string className, string methodName, QueryBuiltInFunction queryFunction, LinqBuiltInFunctionKind functionType)
{
ExceptionUtilities.CheckStringArgumentIsNotNullOrEmpty(className, "className");
ExceptionUtilities.CheckStringArgumentIsNotNullOrEmpty(methodName, "methodName");
ExceptionUtilities.CheckArgumentNotNull(queryFunction, "queryFunction");
ExceptionUtilities.CheckArgumentNotNull(functionType, "functionType");
this.ClassName = className;
this.MethodName = methodName;
this.BuiltInFunction = queryFunction;
this.BuiltInFunctionKind = functionType;
}
/// <summary>
/// Initializes a new instance of the <see cref="LinqBuiltInFunction"/> class.
/// </summary>
/// <param name="className">Name of the class.</param>
/// <param name="methodName">Name of the method.</param>
/// <param name="queryFunction">The query function.</param>
public LinqBuiltInFunction(string className, string methodName, QueryBuiltInFunction queryFunction) :
this(className, methodName, queryFunction, LinqBuiltInFunctionKind.StaticMethod)
{
}
/// <summary>
/// Resolves built-in function result type
/// </summary>
/// <param name="function">The funciton to resolve the result type for.</param>
/// <param name="resolvedArgumentTypes">Resolved argument types.</param>
/// <returns>Resolved function result type.</returns>
protected QueryType ResolveBuiltInFunctionResultType(QueryBuiltInFunction function, QueryType[] resolvedArgumentTypes)
{
var resolvedType = function.ReturnTypeResolver != null?function.ReturnTypeResolver(resolvedArgumentTypes) : this.GetDefaultQueryType(function.ReturnType);
return(resolvedType);
}
/// <summary>
/// Initializes a new instance of the <see cref="LinqBuiltInFunction"/> class.
/// </summary>
/// <param name="className">Name of the class.</param>
/// <param name="methodName">Name of the method.</param>
/// <param name="queryFunction">The query function.</param>
public LinqBuiltInFunction(string className, string methodName, QueryBuiltInFunction queryFunction) :
this(className, methodName, queryFunction, LinqBuiltInFunctionKind.StaticMethod)
{
}
