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| <html> |
| <body> |
| <h2>Casssandra EntityStore.</h2> |
| <h3>Polygene's Cassandra Keyspace</h3> |
| <p> |
| The Cassandra EntityStore can either use an existing Cassandra Keyspace, which is the default, OR create its own |
| keyspace. |
| </p> |
| <p> |
| The {@code CassandraEntityStoreConfiguration#keyspaceName()} defines the name of the keyspace to use, or to be |
| created. |
| If not defined, then the default name is "polygene". |
| </p> |
| <p> |
| The {@code CassandraEntityStoreConfiguration#createIfMissing()} defines if new missing resources should |
| be created or an Exception should be thrown if missing. |
| </p> |
| <p> |
| If it is created, then the {@code CassandraEntityStoreConfiguration#replicationFactor()} will define the replication |
| factor, and the command to create the keyspace is; |
| </p> |
| <code> |
| <pre> |
| CREATE KEYSPACE <keyspaceName> WITH replication = {'class':'SimpleStrategy', 'replication_factor' : <replicationFactor> }; |
| </pre> |
| </code> |
| <h3>Polygene's Cassandra Table</h3> |
| <p> |
| Polygene will store all entities in a single Cassandra TABLE |
| </p> |
| <code> |
| <pre> |
| CREATE TABLE <tableName> ( |
| id text, |
| version text, |
| appversion text, |
| storeversion text, |
| usecase text, |
| modified timestamp, |
| properties map<string,string> |
| assocs map<string,string> |
| manyassocs map<string,string> |
| namedassocs map<string,string> |
| PRIMARY KEY ( id ) |
| ); |
| </pre> |
| </code> |
| |
| </body> |
| </html> |
