private static ODataExpression ParseCallExpression(Expression expression)
{
var callExpression = expression as MethodCallExpression;
if (callExpression.Object == null)
{
var target = callExpression.Arguments.FirstOrDefault();
if (target != null)
{
return(FromFunction(callExpression.Method.Name, ParseLinqExpression(target).Reference,
callExpression.Arguments.Skip(1)));
}
else
{
throw Utils.NotSupportedExpression(expression);
}
}
else
{
switch (callExpression.Object.NodeType)
{
case ExpressionType.MemberAccess:
var memberExpression = callExpression.Object as MemberExpression;
var arguments = new List <object>();
arguments.AddRange(callExpression.Arguments.Select(ParseCallArgumentExpression));
var function = new ExpressionFunction(callExpression.Method.Name, arguments);
return(new ODataExpression(ParseMemberExpression(memberExpression), function));
case ExpressionType.Call:
return(ParseCallExpression(callExpression.Object));
}
throw Utils.NotSupportedExpression(callExpression.Object);
}
}
protected internal ODataExpression(ODataExpression expression)
{
_functionCaller = expression._functionCaller;
_left = expression._left;
_right = expression._right;
_operator = expression._operator;
_conversionType = expression._conversionType;
this.Reference = expression.Reference;
this.Value = expression.Value;
this.Function = expression.Function;
}
protected internal ODataExpression(ODataExpression expression)
{
_functionCaller = expression._functionCaller;
_left = expression._left;
_right = expression._right;
_operator = expression._operator;
_conversionType = expression._conversionType;
this.Reference = expression.Reference;
this.Value = expression.Value;
this.Function = expression.Function;
}
protected DynamicODataExpression(ODataExpression caller, ExpressionFunction function)
: base(caller, function)
{
}
protected DynamicODataExpression(ExpressionFunction function)
: base(function)
{
}
protected internal ODataExpression(ODataExpression caller, ExpressionFunction function)
{
_functionCaller = caller;
this.Function = function;
}
protected DynamicFilterExpression(FilterExpression caller, ExpressionFunction function)
: base(caller, function)
{
}
protected internal ODataExpression(ExpressionFunction function)
{
this.Function = function;
}
private static ODataExpression ParseCallExpression(Expression expression)
{
var callExpression = expression as MethodCallExpression;
if (callExpression.Object == null)
{
var target = callExpression.Arguments.FirstOrDefault();
if (target != null)
{
var callArguments = string.Equals(callExpression.Method.DeclaringType.FullName, "System.Convert", StringComparison.Ordinal)
? callExpression.Arguments
: callExpression.Arguments.Skip(1);
return FromFunction(callExpression.Method.Name, ParseLinqExpression(target).Reference, callArguments);
}
else
{
throw Utils.NotSupportedExpression(expression);
}
}
else
{
switch (callExpression.Object.NodeType)
{
case ExpressionType.MemberAccess:
var memberExpression = callExpression.Object as MemberExpression;
var arguments = new List<object>();
arguments.AddRange(callExpression.Arguments.Select(ParseCallArgumentExpression));
var function = new ExpressionFunction(callExpression.Method.Name, arguments);
return new ODataExpression(ParseMemberExpression(memberExpression), function);
case ExpressionType.Call:
return ParseCallExpression(callExpression.Object);
}
throw Utils.NotSupportedExpression(callExpression.Object);
}
}
protected DynamicODataExpression(ODataExpression caller, ExpressionFunction function)
: base(caller, function)
{
}
internal static FilterExpression FromFunction(ExpressionFunction function)
{
return new FilterExpression { _function = function };
}
protected FilterExpression(FilterExpression caller, ExpressionFunction function)
{
_functionCaller = caller;
this.Function = function;
}
protected FilterExpression(ExpressionFunction function)
{
this.Function = function;
}
public static bool TryGetOperatorMapping(ODataExpression functionCaller, ExpressionFunction function, AdapterVersion adapterVersion,
out FunctionToOperatorMapping operatorMapping)
{
operatorMapping = DefinedMappings.SingleOrDefault(x => x.CanMap(function.FunctionName, function.Arguments.Count, functionCaller, adapterVersion));
return(operatorMapping != null);
}
protected ODataExpression(ExpressionFunction function)
{
this.Function = function;
}
protected DynamicODataExpression(ExpressionFunction function)
: base(function)
{
}
public FunctionDefinition(ExpressionFunction.FunctionCall functionCall, FunctionMapping functionMapping, AdapterVersion adapterVersion = AdapterVersion.Any)
{
FunctionCall = functionCall;
FunctionMapping = functionMapping;
AdapterVersion = adapterVersion;
}
protected ODataExpression(ExpressionFunction function)
{
this.Function = function;
}
internal static ODataExpression FromFunction(ExpressionFunction function)
{
return(new ODataExpression(function));
}
internal static ODataExpression FromFunction(ExpressionFunction function)
{
return new ODataExpression(function);
}
protected internal ODataExpression(ExpressionFunction function)
{
this.Function = function;
}
protected internal ODataExpression(ODataExpression caller, ExpressionFunction function)
{
_functionCaller = caller;
this.Function = function;
}
protected DynamicFilterExpression(ExpressionFunction function)
: base(function)
{
}