private static void PopulateConfigFromType(ItemStorageConfig config, ITypeInfo typeInfo)
{
DynamoDBTableAttribute tableAttribute = Utils.GetTableAttribute(typeInfo);
if (tableAttribute == null)
{
config.TableName = typeInfo.Name;
}
else
{
if (string.IsNullOrEmpty(tableAttribute.TableName))
{
throw new InvalidOperationException("DynamoDBTableAttribute.Table is empty or null");
}
config.TableName = tableAttribute.TableName;
config.LowerCamelCaseProperties = tableAttribute.LowerCamelCaseProperties;
}
string tableAlias;
if (AWSConfigs.DynamoDBConfig.Context.TableAliases.TryGetValue(config.TableName, out tableAlias))
{
config.TableName = tableAlias;
}
foreach (var member in typeInfo.GetMembers())
{
if (!ItemStorageConfig.IsValidMemberInfo(member))
{
continue;
}
// prepare basic info
PropertyStorage propertyStorage = new PropertyStorage(member);
propertyStorage.AttributeName = GetAccurateCase(config, member.Name);
// run through all DDB attributes
List <DynamoDBAttribute> allAttributes = Utils.GetAttributes(member);
foreach (var attribute in allAttributes)
{
// filter out ignored properties
if (attribute is DynamoDBIgnoreAttribute)
{
propertyStorage.IsIgnored = true;
}
if (attribute is DynamoDBVersionAttribute)
{
propertyStorage.IsVersion = true;
}
DynamoDBPropertyAttribute propertyAttribute = attribute as DynamoDBPropertyAttribute;
if (propertyAttribute != null)
{
if (!string.IsNullOrEmpty(propertyAttribute.AttributeName))
{
propertyStorage.AttributeName = GetAccurateCase(config, propertyAttribute.AttributeName);
}
if (propertyAttribute.Converter != null)
{
propertyStorage.ConverterType = propertyAttribute.Converter;
}
if (propertyAttribute is DynamoDBHashKeyAttribute)
{
var gsiHashAttribute = propertyAttribute as DynamoDBGlobalSecondaryIndexHashKeyAttribute;
if (gsiHashAttribute != null)
{
propertyStorage.IsGSIHashKey = true;
propertyStorage.AddIndex(gsiHashAttribute);
}
else
{
propertyStorage.IsHashKey = true;
}
}
if (propertyAttribute is DynamoDBRangeKeyAttribute)
{
var gsiRangeAttribute = propertyAttribute as DynamoDBGlobalSecondaryIndexRangeKeyAttribute;
if (gsiRangeAttribute != null)
{
propertyStorage.IsGSIRangeKey = true;
propertyStorage.AddIndex(gsiRangeAttribute);
}
else
{
propertyStorage.IsRangeKey = true;
}
}
DynamoDBLocalSecondaryIndexRangeKeyAttribute lsiRangeKeyAttribute = propertyAttribute as DynamoDBLocalSecondaryIndexRangeKeyAttribute;
if (lsiRangeKeyAttribute != null)
{
propertyStorage.IsLSIRangeKey = true;
propertyStorage.AddIndex(lsiRangeKeyAttribute);
}
}
}
config.Properties.Add(propertyStorage);
}
}
protected void AddPropertyStorage(string propertyName, PropertyStorage propertyStorage)
{
PropertyToPropertyStorageMapping[propertyName] = propertyStorage;
}
public bool TryGetPropertyStorage(string propertyName, out PropertyStorage storage)
{
return(PropertyToPropertyStorageMapping.TryGetValue(propertyName, out storage));
}
private bool FindSingleProperty(Func <PropertyStorage, bool> match, string errorMessage, out PropertyStorage propertyStorage)
{
var properties = Properties.Where(match).ToList();
if (properties.Count == 0)
{
propertyStorage = null;
return(false);
}
if (properties.Count == 1)
{
propertyStorage = properties[0];
return(true);
}
throw new InvalidOperationException(errorMessage);
}
internal static ItemStorageConfig CreateStorageConfig(Type type)
{
if (type == null)
{
throw new ArgumentNullException("type");
}
ItemStorageConfig config = new ItemStorageConfig(type);
DynamoDBTableAttribute tableAttribute = Utils.GetTableAttribute(type);
if (tableAttribute == null || string.IsNullOrEmpty(tableAttribute.TableName))
{
throw new InvalidOperationException("No DynamoDBTableAttribute on type");
}
if (string.IsNullOrEmpty(tableAttribute.TableName))
{
throw new InvalidOperationException("DynamoDBTableAttribute.Table is empty or null");
}
config.TableName = tableAttribute.TableName;
config.LowerCamelCaseProperties = tableAttribute.LowerCamelCaseProperties;
foreach (var member in type.GetMembers())
{
// filter out non-fields and non-properties
if (!(member is FieldInfo || member is PropertyInfo))
{
continue;
}
// filter out properties that aren't both read and write
if (!Utils.IsReadWrite(member))
{
continue;
}
DynamoDBAttribute attribute = Utils.GetAttribute(member);
// filter out ignored properties
if (attribute is DynamoDBIgnoreAttribute)
{
continue;
}
Type memberType = Utils.GetType(member);
string attributeName = GetAccurateCase(config, member.Name);
string propertyName = member.Name;
PropertyStorage propertyStorage = new PropertyStorage
{
Member = member,
MemberType = memberType,
};
if (attribute is DynamoDBVersionAttribute)
{
Utils.ValidateVersionType(memberType); // no conversion is possible, so type must be a nullable primitive
propertyStorage.IsVersion = true;
}
DynamoDBPropertyAttribute propertyAttribute = attribute as DynamoDBPropertyAttribute;
if (propertyAttribute != null)
{
if (!string.IsNullOrEmpty(propertyAttribute.AttributeName))
{
attributeName = GetAccurateCase(config, propertyAttribute.AttributeName);
}
if (propertyAttribute is DynamoDBHashKeyAttribute)
{
if (propertyAttribute.Converter == null && !Utils.IsPrimitive(memberType))
{
throw new InvalidOperationException("Hash key " + propertyName + " must be of primitive type");
}
propertyStorage.IsHashKey = true;
}
if (propertyAttribute is DynamoDBRangeKeyAttribute)
{
if (propertyAttribute.Converter == null && !Utils.IsPrimitive(memberType))
{
throw new InvalidOperationException("Range key " + propertyName + " must be of primitive type");
}
propertyStorage.IsRangeKey = true;
}
if (propertyAttribute is DynamoDBLocalSecondaryIndexRangeKeyAttribute)
{
DynamoDBLocalSecondaryIndexRangeKeyAttribute lsiRangeKeyAttribute = propertyAttribute as DynamoDBLocalSecondaryIndexRangeKeyAttribute;
if (lsiRangeKeyAttribute.IndexNames == null || lsiRangeKeyAttribute.IndexNames.Length == 0)
{
throw new InvalidOperationException("Local Secondary Index must not be null or empty");
}
propertyStorage.Indexes.AddRange(lsiRangeKeyAttribute.IndexNames);
}
if (propertyAttribute.Converter != null)
{
if (!Utils.CanInstantiate(propertyAttribute.Converter) || !Utils.ImplementsInterface(propertyAttribute.Converter, typeof(IPropertyConverter)))
{
throw new InvalidOperationException("Converter for " + propertyName + " must be instantiable with no parameters and must implement IPropertyConverter");
}
propertyStorage.Converter = Utils.Instantiate(propertyAttribute.Converter) as IPropertyConverter;
}
}
propertyStorage.PropertyName = propertyName;
propertyStorage.AttributeName = attributeName;
config.AddPropertyStorage(propertyStorage);
}
if (config.HashKeyPropertyNames.Count == 0)
{
throw new InvalidOperationException("No hash key configured for type " + type.FullName);
}
return(config);
}
private static List <AttributeValue> ConvertConditionValues(object[] conditionValues, PropertyStorage conditionProperty, bool canReturnPrimitiveInsteadOfList = false)
{
List <AttributeValue> attributeValues = new List <AttributeValue>();
foreach (var conditionValue in conditionValues)
{
DynamoDBEntry entry = ToDynamoDBEntry(conditionProperty, conditionValue, canReturnPrimitiveInsteadOfList);
AttributeValue attributeValue = entry.ConvertToAttributeValue();
attributeValues.Add(attributeValue);
}
return(attributeValues);
}
// This method composes the query filter and determines the possible indexes that the filter
// may be used against. In the case where the condition property is also a RANGE key on the
// table and not just on LSI/GSI, the potential index will be "" (absent).
private static QueryFilter ComposeQueryFilterHelper(
DynamoDBFlatConfig currentConfig,
Document hashKey,
IEnumerable <QueryCondition> conditions,
ItemStorageConfig storageConfig,
out List <string> indexNames)
{
if (hashKey == null)
{
throw new ArgumentNullException("hashKey");
}
if (storageConfig.HashKeyPropertyNames.Count != 1)
{
throw new InvalidOperationException("Must have one hash key defined for the table " + storageConfig.TableName);
}
if (storageConfig.RangeKeyPropertyNames.Count != 1 && storageConfig.IndexNameToGSIMapping.Count == 0)
{
throw new InvalidOperationException("Must have one range key or a GSI index defined for the table " + storageConfig.TableName);
}
QueryFilter filter = new QueryFilter();
// Configure hash-key equality condition
string hashKeyProperty = storageConfig.HashKeyPropertyNames[0];
hashKeyProperty = storageConfig.GetCorrectHashKeyProperty(currentConfig, hashKeyProperty);
PropertyStorage propertyStorage = storageConfig.GetPropertyStorage(hashKeyProperty);
string attributeName = propertyStorage.AttributeName;
DynamoDBEntry hashValue = hashKey[attributeName];
filter.AddCondition(attributeName, QueryOperator.Equal, hashValue);
indexNames = new List <string>();
if (conditions != null)
{
foreach (QueryCondition condition in conditions)
{
object[] conditionValues = condition.Values;
PropertyStorage conditionProperty = storageConfig.GetPropertyStorage(condition.PropertyName);
if (conditionProperty.IsLSIRangeKey || conditionProperty.IsGSIKey)
{
indexNames.AddRange(conditionProperty.IndexNames);
}
if (conditionProperty.IsRangeKey)
{
indexNames.Add(NO_INDEX);
}
List <AttributeValue> attributeValues = ConvertConditionValues(conditionValues, conditionProperty);
filter.AddCondition(conditionProperty.AttributeName, condition.Operator, attributeValues);
}
}
if (currentConfig.QueryFilter != null)
{
foreach (ScanCondition condition in currentConfig.QueryFilter)
{
object[] conditionValues = condition.Values;
PropertyStorage conditionProperty = storageConfig.GetPropertyStorage(condition.PropertyName);
List <AttributeValue> attributeValues = ConvertConditionValues(conditionValues, conditionProperty, true);
filter.AddCondition(conditionProperty.AttributeName, condition.Operator, attributeValues);
}
}
return(filter);
}
private static DynamoDBEntry ToDynamoDBEntry(PropertyStorage propertyStorage, object value)
{
return(ToDynamoDBEntry(propertyStorage, value, false));
}
// Key creation
private static DynamoDBEntry ValueToDynamoDBEntry(PropertyStorage propertyStorage, object value)
{
var entry = ToDynamoDBEntry(propertyStorage, value);
return(entry);
}