com.datastax.driver.mapping

Class DefaultNamingStrategy

java.lang.Object

com.datastax.driver.mapping.DefaultNamingStrategy

All Implemented Interfaces:

NamingStrategy

public class DefaultNamingStrategy
extends Object
implements NamingStrategy

A naming strategy that builds upon two naming conventions for the Java and Cassandra side.

To infer a Cassandra name, the strategy will split the Java name according to the Java convention, and then join the resulting tokens according to the Cassandra convention. For example, a possible implementation might:

• trim a prefix and tokenize on camel case: split("mUserName") = "user, name"
• join with a separator: join("user", "name") => "user_name"

Constructor Summary

Constructors

Constructor and Description
DefaultNamingStrategy() Builds a new instance with the default conventions, namely lower camel case for the Java convention, and lower case for the Cassandra convention.
DefaultNamingStrategy(NamingConvention javaConvention, NamingConvention cassandraConvention) Builds a new instance.

Method Summary

Modifier and Type	Method and Description
String	toCassandraName(String javaPropertyName) Infers a Cassandra column/field name from a Java property name.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DefaultNamingStrategy

public DefaultNamingStrategy()

Builds a new instance with the default conventions, namely lower camel case for the Java convention, and lower case for the Cassandra convention.

For example, a "userName" Java property will be mapped to a "username" column.

DefaultNamingStrategy

public DefaultNamingStrategy(NamingConvention javaConvention,
                             NamingConvention cassandraConvention)

Builds a new instance.

Parameters:

javaConvention - the naming convention that will be used to tokenize the Java property names.

cassandraConvention - the naming convention that will be used to build the Cassandra names from the Java tokens.

Method Detail

toCassandraName

public String toCassandraName(String javaPropertyName)

Description copied from interface: NamingStrategy

Infers a Cassandra column/field name from a Java property name.

Specified by:

toCassandraName in interface NamingStrategy

Parameters:

javaPropertyName - the name of the Java property. Depending on the property access strategy, this might the name of the Java field, or be inferred from a getter/setter based on the usual Java beans conventions.

Returns:

the name of the Cassandra column or field. If you want the mapping to be case-insensitive, this should be in lower case.