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Apache Cassandra Essentials
book

Apache Cassandra Essentials

by Nitin Padalia
November 2015
Beginner to intermediate content levelBeginner to intermediate
172 pages
3h 47m
English
Packt Publishing
Content preview from Apache Cassandra Essentials

Mapping API

The Datastax Java driver provides a mapping API that helps to map our query results to Java classes. This API is provided as a separate artifact. We're using mapping API version 2.1.4 in our examples, below are dependency details:

// Maven Dependancy
<dependency>
   <groupId>com.datastax.cassandra</groupId>
   <artifactId>cassandra-driver-mapping</artifactId>
   <version>2.1.4</version>
</dependency>
// Gradle Dependancy
compile 'com.datastax.cassandra:Cassandra-driver-mapping:2.1.4'

The mapping API provides annotations to map a Java class to a Cassandra table. For example, our Status class can be mapped to Cassandra table status_updates_by_user, as in the following example of Status.java, updated as per the mapping API:

package cassandra.cassandraclient.model; ...
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Publisher Resources

ISBN: 9781783989102