public static bool TryGetFunctionMapping(
string functionName,
int argumentCount,
AdapterVersion adapterVersion,
out FunctionMapping?functionMapping)
{
functionMapping = null;
var function = DefinedFunctions.SingleOrDefault(x =>
x.FunctionCall.Equals(new ExpressionFunction.FunctionCall(functionName, argumentCount)) &&
(x.AdapterVersion & adapterVersion) == adapterVersion);
if (function != null)
{
functionMapping = function.FunctionMapping;
}
return(function != null);
}
private static FunctionDefinition CreateFunctionDefinition(string functionName, int argumentCount, string mappedFunctionName,
Func <FunctionDefinition, Func <string, string, IEnumerable <object>, ODataExpression> > mapper, AdapterVersion adapterVersion = AdapterVersion.Any)
{
var functionCall = new ExpressionFunction.FunctionCall(functionName, argumentCount);
var functionMapping = new FunctionMapping(mappedFunctionName);
var function = new FunctionDefinition(functionCall, functionMapping, adapterVersion);
functionMapping.FunctionMapper = mapper(function);
return(function);
}
public FunctionDefinition(ExpressionFunction.FunctionCall functionCall, FunctionMapping functionMapping, AdapterVersion adapterVersion = AdapterVersion.Any)
{
FunctionCall = functionCall;
FunctionMapping = functionMapping;
AdapterVersion = adapterVersion;
}
protected override bool CanMap(string functionName, int argumentCount, ODataExpression functionCaller, AdapterVersion adapterVersion = AdapterVersion.Any)
{
return(functionName == nameof(Enumerable.Contains) &&
argumentCount == 1 &&
functionCaller.Value != null &&
functionCaller.Value.GetType() != typeof(string) &&
IsInstanceOfType(typeof(IEnumerable), functionCaller.Value) &&
adapterVersion == AdapterVersion.V4);
}
protected abstract bool CanMap(string functionName, int argumentCount, ODataExpression functionCaller, AdapterVersion adapterVersion = AdapterVersion.Any);
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);
}
public static bool TryGetFunctionMapping(string functionName, int argumentCount, AdapterVersion adapterVersion, out FunctionMapping functionMapping)
{
functionMapping = null;
var function = DefinedFunctions.SingleOrDefault(x =>
x.FunctionCall.Equals(new ExpressionFunction.FunctionCall(functionName, argumentCount)) &&
(x.AdapterVersion & adapterVersion) == adapterVersion);
if (function != null)
{
functionMapping = function.FunctionMapping;
}
return function != null;
}
private static FunctionDefinition CreateFunctionDefinition(string functionName, int argumentCount, string mappedFunctionName,
Func<FunctionDefinition, Func<string, string, IEnumerable<object>, ODataExpression>> mapper, AdapterVersion adapterVersion = AdapterVersion.Any)
{
var functionCall = new ExpressionFunction.FunctionCall(functionName, argumentCount);
var functionMapping = new FunctionMapping(mappedFunctionName);
var function = new FunctionDefinition(functionCall, functionMapping, adapterVersion);
functionMapping.FunctionMapper = mapper(function);
return function;
}
public FunctionDefinition(ExpressionFunction.FunctionCall functionCall, FunctionMapping functionMapping, AdapterVersion adapterVersion = AdapterVersion.Any)
{
FunctionCall = functionCall;
FunctionMapping = functionMapping;
AdapterVersion = adapterVersion;
}
