/// <summary>
/// /// Specify the DeleteItem operation for the given primary key.
/// </summary>
/// <param name="primaryKey">Primary key of the item to delete.</param>
/// <typeparam name="TRecord">The record type.</typeparam>
public IDynamoTableDeleteItem <TRecord> DeleteItem <TRecord>(DynamoPrimaryKey <TRecord> primaryKey)
where TRecord : class
=> new DynamoTableDeleteItem <TRecord>(this, new DeleteItemRequest {
Key = new Dictionary <string, AttributeValue> {
[primaryKey.PKName] = new AttributeValue(primaryKey.PKValue),
[primaryKey.SKName] = new AttributeValue(primaryKey.SKValue)
},
TableName = TableName
});
//--- Methods ---
/// <summary>
/// Specify the GetItem operation for the given primary key.
/// </summary>
/// <param name="primaryKey">Primary key of the item to retrieve.</param>
/// <param name="consistentRead">Boolean indicating if the read operation should be performed against the main partition (2x cost compared to eventual consistent read).</param>
/// <typeparam name="TRecord">The record type.</typeparam>
public IDynamoTableGetItem <TRecord> GetItem <TRecord>(DynamoPrimaryKey <TRecord> primaryKey, bool consistentRead = false)
where TRecord : class
=> new DynamoTableGetItem <TRecord>(this, new GetItemRequest {
ConsistentRead = consistentRead,
Key = new Dictionary <string, AttributeValue> {
[primaryKey.PKName] = new AttributeValue(primaryKey.PKValue),
[primaryKey.SKName] = new AttributeValue(primaryKey.SKValue)
},
TableName = TableName
});
/// <summary>
/// Specify the PutItem operation for the given primary key and record. When successful, this operation creates a new row or replaces all attributes of the matching row.
/// </summary>
/// <param name="primaryKey">Primary key of the item to write.</param>
/// <param name="record">The record to write</param>
/// <typeparam name="TRecord">The record type.</typeparam>
public IDynamoTablePutItem <TRecord> PutItem <TRecord>(DynamoPrimaryKey <TRecord> primaryKey, TRecord record)
where TRecord : class
=> new DynamoTablePutItem <TRecord>(this, new PutItemRequest {
Item = SerializeItem(record, primaryKey),
TableName = TableName
});
internal Dictionary <string, AttributeValue> SerializeItem <TRecord>(TRecord record, DynamoPrimaryKey <TRecord> primaryKey)
where TRecord : class
{
var attributes = DynamoSerializer.Serialize(record, SerializerOptions)?.M;
if (attributes is null)
{
throw new ArgumentException("cannot serialize null record", nameof(record));
}
// add type details
attributes["_t"] = new AttributeValue(Options.GetShortTypeName(typeof(TRecord)));
// add modified details
attributes["_m"] = new AttributeValue {
N = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds().ToString(CultureInfo.InvariantCulture)
};
// add primary key details
attributes[primaryKey.PKName] = new AttributeValue(primaryKey.PKValue);
attributes[primaryKey.SKName] = new AttributeValue(primaryKey.SKValue);
return(attributes);
}
