internal AttributedProperty(PropertyInfo property, FirestorePropertyAttribute attribute)
{
_propertyInfo = property;
FirestoreName = attribute.Name ?? property.Name;
SentinelValue = SentinelValue.FromPropertyAttributes(property);
// Note that the error messages in here don't use nameof, as we don't have an overload of CheckState accepting three
// format arguments.
// TODO: Put that in GAX and use nameof.
string typeName = property.DeclaringType.FullName;
GaxPreconditions.CheckState(property.GetIndexParameters().Length == 0,
"{0}.{1} is an indexer, and should not be decorated with FirestorePropertyAttribute.",
typeName, property.Name);
// Annoyingly, we can't easily check whether the property is static - we have to check the individual methods.
var getMethod = property.GetGetMethod(nonPublic: true);
var setMethod = property.GetSetMethod(nonPublic: true);
GaxPreconditions.CheckState(getMethod == null || !getMethod.IsStatic,
"{0}.{1} is static, and should not be decorated with FirestorePropertyAttribute.",
typeName, property.Name);
GaxPreconditions.CheckState(setMethod == null || !setMethod.IsStatic,
"{0}.{1} is static, and should not be decorated with FirestorePropertyAttribute.",
typeName, property.Name);
}
private FirestoreDataAttributedType(BclType type)
{
var typeInfo = type.GetTypeInfo();
_attribute = typeInfo.GetCustomAttribute <FirestoreDataAttribute>(inherit: false);
// This would be an internal library bug. We shouldn't be calling it in this case.
GaxPreconditions.CheckState(_attribute != null, "Type {0} is not decorated with {1}.", type.FullName, nameof(FirestoreDataAttribute));
// The rest are user bugs.
GaxPreconditions.CheckState(Enum.IsDefined(typeof(UnknownPropertyHandling), UnknownPropertyHandling),
"Type {0} has invalid {1} value", type.FullName, nameof(UnknownPropertyHandling));
_ctor = typeInfo
.GetConstructors(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance)
.SingleOrDefault(ctor => ctor.GetParameters().Length == 0);
GaxPreconditions.CheckState(_ctor != null, "Type {0} has no parameterless constructor", type.FullName);
List <AttributedProperty> readableProperties = new List <AttributedProperty>();
Dictionary <string, AttributedProperty> writableProperties = new Dictionary <string, AttributedProperty>();
// We look for static properties specifically to find problems. We'll never use static properties.
foreach (var property in typeInfo.GetProperties(BindingFlags.Static | BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic))
{
FirestorePropertyAttribute attribute = property.GetCustomAttribute <FirestorePropertyAttribute>(inherit: true);
if (attribute == null)
{
continue;
}
var attributedProperty = new AttributedProperty(property, attribute);
string firestoreName = attributedProperty.FirestoreName;
// Note that we check readable and writable properties separately. We could theoretically have
// two separate properties, one read-only and one write-only, with the same name in Firestore.
if (attributedProperty.CanRead)
{
// This is O(N), but done once per type so should be okay.
GaxPreconditions.CheckState(!readableProperties.Any(p => p.FirestoreName == firestoreName),
"Type {0} contains multiple readable properties with name {1}", type.FullName, firestoreName);
readableProperties.Add(attributedProperty);
}
if (attributedProperty.CanWrite)
{
GaxPreconditions.CheckState(!writableProperties.ContainsKey(firestoreName),
"Type {0} contains multiple writable properties with name {1}", type.FullName, firestoreName);
writableProperties[firestoreName] = attributedProperty;
}
}
ReadableProperties = readableProperties.AsReadOnly();
WritableProperties = new ReadOnlyDictionary <string, AttributedProperty>(writableProperties);
}