public static string Build <TRootObject>(Action <IGraphQueryableObject <TRootObject> > buildFcn)
{
var configuration = new GraphQueryableObject <TRootObject>(string.Empty);
buildFcn(configuration);
return(configuration.ToQueryString());
}
public IGraphQueryableObject <TEntity> AddObjectAs <TProperty, TInnerProperty>(Expression <Func <TEntity, TProperty> > navigationFcn, Action <IGraphQueryableObject <TInnerProperty> > innerGraphQueryable)
{
var propertyName = GetPropertyNameFromExpression(navigationFcn);
var newObject = new GraphQueryableObject <TInnerProperty>(propertyName);
_fields[propertyName] = newObject;
innerGraphQueryable(newObject);
return(this);
}
private static (GraphQueryableObject <object> @object, int index) ParseObject(string queryString, int startingIndex)
{
var index = startingIndex;
GraphQueryableObject <object> @object = null;
while (index < queryString.Length)
{
var character = queryString[index];
if (@object == null)
{
if (character == '{')
{
@object = new GraphQueryableObject <object>(string.Empty);
}
else if (!char.IsSeparator(character))
{
throw new Exception($"Unexpected character: Found wrong character at {index}");
}
}
else
{
if (character == '}')
{
return(@object, index + 1);
}
else if (character == ',')
{
var(field, newIndex) = ParseField(queryString, index + 1);
if (field is GraphQueryableScalar)
{
@object.AddScalar((GraphQueryableScalar)field);
}
else
{
@object.AddObject((GraphQueryableObject <object>)field);
}
index = newIndex - 1;
}
else if (char.IsLetterOrDigit(character))
{
var(field, newIndex) = ParseField(queryString, index);
if (field is GraphQueryableScalar)
{
@object.AddScalar((GraphQueryableScalar)field);
}
else
{
@object.AddObject((GraphQueryableObject <object>)field);
}
index = newIndex - 1;
}
else if (!char.IsSeparator(character))
{
throw new Exception($"Unexpected character: Found wrong character at {index}");
}
}
index++;
}
throw new Exception($"End-of-string: Cannot parse object at {startingIndex}");
}
internal IGraphQueryableObject <TEntity> AddObject <TObject>(GraphQueryableObject <TObject> @object)
{
_fields.Add(@object.Name, @object);
return(this);
}
