public DataServiceRequest(Uri requestUri)
{
Util.CheckArgumentNull(requestUri, "requestUri");
Type elementType = typeof(TElement);
elementType = ClientConvert.IsKnownType(elementType) ? elementType : TypeSystem.GetElementType(elementType);
this.queryComponents = new QueryComponents(requestUri, Util.DataServiceVersionEmpty, elementType, null, null);
}
internal override ResourceExpression CreateCloneWithNewType(Type type)
{
return(this.CreateCloneWithNewTypes(type, TypeSystem.GetElementType(type)));
}
internal override Expression VisitMethodCall(MethodCallExpression m)
{
string str;
SequenceMethod method;
if (TypeSystem.TryGetQueryOptionMethod(m.Method, out str))
{
this.builder.Append(str);
this.builder.Append('(');
if (str == "substringof")
{
this.Visit(m.Arguments[0]);
this.builder.Append(',');
this.Visit(m.Object);
}
else
{
if (m.Object != null)
{
this.Visit(m.Object);
}
if (m.Arguments.Count > 0)
{
if (m.Object != null)
{
this.builder.Append(',');
}
for (int i = 0; i < m.Arguments.Count; i++)
{
this.Visit(m.Arguments[i]);
if (i < (m.Arguments.Count - 1))
{
this.builder.Append(',');
}
}
}
}
this.builder.Append(')');
return(m);
}
if (ReflectionUtil.TryIdentifySequenceMethod(m.Method, out method))
{
if (ReflectionUtil.IsAnyAllMethod(method))
{
WebUtil.RaiseVersion(ref this.uriVersion, Util.DataServiceVersion3);
this.Visit(m.Arguments[0]);
this.builder.Append('/');
if (method == SequenceMethod.All)
{
this.builder.Append("all");
}
else
{
this.builder.Append("any");
}
this.builder.Append('(');
if (method != SequenceMethod.Any)
{
LambdaExpression expression = (LambdaExpression)m.Arguments[1];
string name = expression.Parameters[0].Name;
this.builder.Append(name);
this.builder.Append(':');
this.scopeCount++;
this.Visit(expression.Body);
this.scopeCount--;
}
this.builder.Append(')');
return(m);
}
if ((method == SequenceMethod.OfType) && (this.parent != null))
{
MethodCallExpression parent = this.parent as MethodCallExpression;
if (((parent != null) && ReflectionUtil.TryIdentifySequenceMethod(parent.Method, out method)) && ReflectionUtil.IsAnyAllMethod(method))
{
Type type = parent.Method.GetGenericArguments().SingleOrDefault <Type>();
if (ClientTypeUtil.TypeOrElementTypeIsEntity(type))
{
this.Visit(m.Arguments[0]);
this.builder.Append('/');
this.builder.Append(System.Data.Services.Client.UriHelper.GetEntityTypeNameForUriAndValidateMaxProtocolVersion(type, this.context, ref this.uriVersion));
return(m);
}
}
}
}
this.cantTranslateExpression = true;
return(m);
}
/// <summary>
/// MethodCallExpression visit method
/// </summary>
/// <param name="m">The MethodCallExpression expression to visit</param>
/// <returns>The visited MethodCallExpression expression </returns>
internal override Expression VisitMethodCall(MethodCallExpression m)
{
string methodName;
if (TypeSystem.TryGetQueryOptionMethod(m.Method, out methodName))
{
this.builder.Append(methodName);
this.builder.Append(UriHelper.LEFTPAREN);
// There is a single function, 'substringof', which reorders its argument with
// respect to the CLR method. Thus handling it as a special case rather than
// using a more general argument reordering mechanism.
if (methodName == "substringof")
{
Debug.Assert(m.Method.Name == "Contains", "m.Method.Name == 'Contains'");
Debug.Assert(m.Object != null, "m.Object != null");
Debug.Assert(m.Arguments.Count == 1, "m.Arguments.Count == 1");
this.Visit(m.Arguments[0]);
this.builder.Append(UriHelper.COMMA);
this.Visit(m.Object);
}
else
{
if (m.Object != null)
{
this.Visit(m.Object);
}
if (m.Arguments.Count > 0)
{
if (m.Object != null)
{
this.builder.Append(UriHelper.COMMA);
}
for (int ii = 0; ii < m.Arguments.Count; ii++)
{
this.Visit(m.Arguments[ii]);
if (ii < m.Arguments.Count - 1)
{
this.builder.Append(UriHelper.COMMA);
}
}
}
}
this.builder.Append(UriHelper.RIGHTPAREN);
}
else
{
SequenceMethod sequenceMethod;
if (ReflectionUtil.TryIdentifySequenceMethod(m.Method, out sequenceMethod))
{
if (ReflectionUtil.IsAnyAllMethod(sequenceMethod))
{
// Raise the uriVersion each time we write any or all methods to the uri.
WebUtil.RaiseVersion(ref this.uriVersion, Util.DataServiceVersion3);
this.Visit(m.Arguments[0]);
this.builder.Append(UriHelper.FORWARDSLASH);
if (sequenceMethod == SequenceMethod.All)
{
this.builder.Append(XmlConstants.AllMethodName);
}
else
{
this.builder.Append(XmlConstants.AnyMethodName);
}
this.builder.Append(UriHelper.LEFTPAREN);
if (sequenceMethod != SequenceMethod.Any)
{
// SequenceMethod.Any represents Enumerable.Any(), which has only source argument
// AnyPredicate and All has a second parameter which is the predicate lambda.
Debug.Assert(m.Arguments.Count() == 2, "m.Arguments.Count() == 2");
LambdaExpression le = (LambdaExpression)m.Arguments[1];
string rangeVariable = le.Parameters[0].Name;
this.builder.Append(rangeVariable);
this.builder.Append(UriHelper.COLON);
this.scopeCount++;
this.Visit(le.Body);
this.scopeCount--;
}
this.builder.Append(UriHelper.RIGHTPAREN);
return(m);
}
else if (sequenceMethod == SequenceMethod.OfType && this.parent != null)
{
// check to see if this is an OfType filter for Any or All.
// e.g. ctx.CreateQuery<Movie>("Movies").Where(m=>m.Actors.OfType<MegaStar>().Any())
// which translates to /Movies()?$filter=Actors/MegaStar/any()
MethodCallExpression mce = this.parent as MethodCallExpression;
if (mce != null &&
ReflectionUtil.TryIdentifySequenceMethod(mce.Method, out sequenceMethod) &&
ReflectionUtil.IsAnyAllMethod(sequenceMethod))
{
Type filteredType = mce.Method.GetGenericArguments().SingleOrDefault();
if (ClientTypeUtil.TypeOrElementTypeIsEntity(filteredType))
{
this.Visit(m.Arguments[0]);
this.builder.Append(UriHelper.FORWARDSLASH);
UriHelper.AppendTypeSegment(this.builder, filteredType, this.context, this.inPath, ref this.uriVersion);
return(m);
}
}
}
}
this.cantTranslateExpression = true;
}
return(m);
}
internal override ResourceExpression CreateCloneWithNewType(Type type)
{
return(new NavigationPropertySingletonExpression(type, base.source, this.MemberExpression, TypeSystem.GetElementType(type), this.ExpandPaths.ToList <string>(), this.CountOption, this.CustomQueryOptions.ToDictionary <KeyValuePair <ConstantExpression, ConstantExpression>, ConstantExpression, ConstantExpression>(kvp => kvp.Key, kvp => kvp.Value), base.Projection, base.ResourceTypeAs, base.UriVersion));
}
/// <summary>The QueryComponents associated with this request</summary>
/// <param name="model">The client model.</param>
/// <returns>an instance of QueryComponents.</returns>
internal override QueryComponents QueryComponents(ClientEdmModel model)
{
if (this.queryComponents == null)
{
Type elementType = typeof(TElement);
// for 1..* navigation properties we need the type of the entity of the collection that is being navigated to. Otherwise we use TElement.
elementType = PrimitiveType.IsKnownType(elementType) || WebUtil.IsCLRTypeCollection(elementType, model) ? elementType : TypeSystem.GetElementType(elementType);
this.queryComponents = new QueryComponents(this.requestUri, Util.DataServiceVersionEmpty, elementType, null, null);
}
return(this.queryComponents);
}
internal override System.Data.Services.Client.QueryComponents QueryComponents(DataServiceProtocolVersion maxProtocolVersion)
{
if (this.queryComponents == null)
{
Type type = typeof(TElement);
type = (PrimitiveType.IsKnownType(type) || WebUtil.IsCLRTypeCollection(type, maxProtocolVersion)) ? type : TypeSystem.GetElementType(type);
this.queryComponents = new System.Data.Services.Client.QueryComponents(this.requestUri, Util.DataServiceVersionEmpty, type, null, null);
}
return(this.queryComponents);
}