Comparison of values toĬlusterJ provides access to data in MySQL Cluster using domain These comparisons can beĬombined using methods corresponding to the Boolean operatorsĪND, OR, and NOT. Comparisons between parameters and databaseĬolumn values can be specified, including equal, greater and Interface makes it possible to construct criteria queriesĭynamically, using domain object model properties as query Which makes it possible for a component that is not responsibleįor completing a transaction to indicate that-due to anĪpplication or database error-the transaction must not be In addition, itĮnables the user to mark a transaction as being rollback-only, Interface supports the standard begin, commit, and rollbackīehaviors required by a transactional database.
Transaction completion methods from Session Transaction demarcation might be done automatically by aĬontainer or in a web server servlet filter. Separates transaction management from other persistence methods. Interface like other modern application frameworks, ClusterJ Transactions are not managed by the Session SessionFactory and its use in a ClusterJ application, see
#Mysql jdbc connect how to#
Parameters regarding how to connect to the cluster, includingĬonnection delays and timeouts. Number of the MySQL Cluster management server. Information about the cluster, such as the hostname and port Of which there is typically a single instance for each MySQLĬluster that you want to access from the Java VM. While ClusterJPA and ClusterJ are similar in many ways, thereĪre importance differences between the two, highlighted in theįinding persistent instances by primary keyĬreating, updating, and deleting persistent instances Relations or inheritance, you should use JPA if you need supportįor more information, see Section 4.2.3, “Using JPA with MySQL Cluster”.ĭifferences Between ClusterJPA and ClusterJ. Limited to queries on single tables, and does not support However,ĬlusterJ can be used together with these APIs. Specification, which provides an object-relational persistenceįramework with relationships, inheritance, and persistent classes.ĬlusterJ is independent of ClusterJPA as well as JDBC.
OpenJPA is an implementation of the JPA (Java Persistence API) However, for complex queries (not primary key lookups) Other means, such as JDBC or the mysql client.ĬlusterJPA is an adapter for OpenJPA that can also bypass JDBCĪnd MySQL Server, using ClusterJ for fast-track access to theĬluster. Other data definition operations these must be performed by some However, unlike JDBC, ClusterJ does not support table creation and Included in the dynamic library libnbdclient. Often referred to (in MySQL documentation and elsewhere) simplyĬlusterJ does not need to connect to a mysqld These paths are shown in the following API stack diagram: SQL, JDBC, and the MySQL Server entirely when it is more Significantly improve performance for some uses, bypassing Paths-JDBC or ClusterJ-to MySQL Cluster data,ĭepending on the type of operation to be performed. It can use either of two different access Not depend on the MySQL Server for data access. Similar in many ways to that employed by JPA. Of data access that is based on a domain object model, Provides an object view of the data in the database. Uses JDBC to connect to the MySQL Server. The JDBC implementation most often used with the MySQL Result set that you want to use in your program as objects. SQL, manage the connection, and copy any data from the Works by sending SQL statements to the MySQL Server and Sent through the MySQL Server, using JDBC. ID lookupsĪnd other such operations are performed using ClusterJ, while moreĬomplex queries that can benefit from the MySQL query optimizer are
MySQL Cluster that attempts to offer the best possible performanceīy leveraging the strengths of both ClusterJ and JDBC. Single-table queries it does not support multi-table operations,ĬlusterJPA is an OpenJPA implementation for ClusterJ supports primary key and unique key operations and Because ClusterJĭoes not use the MySQL Server to access data in MySQL Cluster, itĬan perform some operations much more quickly than can be done using Persistence frameworks such as Hibernate and JPA. Similar in style and concept to object-relational mapping Includes ClusterJ and ClusterJPA, a plugin for use with OpenJPA,īoth of which became available in MySQL Cluster NDB 7.1.ĬlusterJ is a high level database API that is This chapter discusses using MySQL Cluster with MySQL Cluster Connector for Java, which MySQL Cluster Connector for Java: Limitations and Known Issues Using Connector/J with MySQL Cluster 4.3.
Getting, Installing, and Setting Up MySQL Cluster Connector for Java 4.2.2. Using MySQL Cluster Connector for Java 4.2.1. The ClusterJ API and Data Object Model 4.2. MySQL Cluster Connector for Java Architecture 4.1.2. MySQL Cluster Connector for Java: Overview 4.1.1.