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• repoexpress-cassandra
• 0.4.8
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• CassandraUuidEntityRepository.java

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com.strategicgains.repoexpress.cassandra.CassandraUuidEntityRepository Maven / Gradle / Ivy

package com.strategicgains.repoexpress.cassandra;

import com.datastax.driver.core.Session;
import com.strategicgains.repoexpress.domain.UuidIdentifiable;
import com.strategicgains.repoexpress.event.UuidIdentityRepositoryObserver;

/**
 * A Cassandra repository that manages types of UuidIdentifiable, which are identified by a single
 * UUID primary key. It utilizes the {@link UuidIdentityRepositoryObserver} to assign a UUID on creation.
 * 

 * Storing a UUID as the ID (as this repository does) requires four (4) bytes for the ID.
 * 

 * Extend this repository to persist entities identified by a UUID but do not implement Timestamped, so do not
 * need the createdAt and updatedAt time stamps applied.
 * 
 * @author toddf
 * @since Jan 28, 2014
 * @see CassandraUuidTimestampedEntityRepository
 */
public abstract class CassandraUuidEntityRepository
extends CassandraEntityRepository
{
	public CassandraUuidEntityRepository(Session session, String tableName, String identifierColumn)
    {
	    super(session, tableName, identifierColumn);
	    initializeObservers();
    }

    protected void initializeObservers()
    {
		addObserver(new UuidIdentityRepositoryObserver());
    }
}