Provides a PostgreSQL connector for Ledger.
//or wherever your connection string is stored
var cs = ConfigurationManager.ConnectionStrings["Postgres"].ConnectionString;
//PostgresEventStore will open and close this connection object as it needs.
//it will *NOT* dispose it.
var eventStore = new PostgresEventStore<Guid>(new NpgsqlConnection(cs)));
var aggregateStore = new AggregateStore<Guid>(eventStore);
//optional: will create an events table and a snapshots table if
//they don't already exist.
aggregateStore.CreateTable();
var person = aggregateStore.Load(id, () => new Person());By default, PostgresEventStore will use a table naming convention of events_{keytype} and snapshots_{keytype}, which is provided by the KeyTypeTableName class.
To change the convention just create a new implementation of ITableName and pass it to the PostgresEventStore:
public class PrefixedTableName : ITableName
{
private readonly string _prefix;
public PrefixedTableName(string prefix)
{
_prefix = prefix;
}
public string ForEvents<TKey>()
{
return _prefix + "_events_" + typeof(TKey).Name.ToLower();
}
public string ForSnapshots<TKey>()
{
return _prefix + "_snapshots_" + typeof(TKey).Name.ToLower();
}
}
//usage
var eventStore = new PostgresEventStore<Guid>(connection, new PrefixedTableName("test"));