cassandra-caseclass-adapter

License	APL2
Categories	Cassandra Data Databases Net React User Interface Web Frameworks
GroupId	net.reactivecore
ArtifactId	cassandra-caseclass-adapter_2.11
Last Version	0.0.2
Release Date	Nov 24, 2020
Type	jar
Description	cassandra-caseclass-adapter cassandra-caseclass-adapter
Project URL	https://github.com/reactivecore/cassandra_caseclass_adapter
Project Organization	net.reactivecore
Source Code Management	https://github.com/reactivecore/cassandra_caseclass_adapter

Download cassandra-caseclass-adapter_2.11

Filename	Size
cassandra-caseclass-adapter_2.11-0.0.2.pom
cassandra-caseclass-adapter_2.11-0.0.2.jar	144 KB
cassandra-caseclass-adapter_2.11-0.0.2-sources.jar	8 KB
cassandra-caseclass-adapter_2.11-0.0.2-javadoc.jar	450 KB

How to add to project

Apache Maven

<!-- https://jarcasting.com/artifacts/net.reactivecore/cassandra-caseclass-adapter_2.11/ -->
<dependency>
    <groupId>net.reactivecore</groupId>
    <artifactId>cassandra-caseclass-adapter_2.11</artifactId>
    <version>0.0.2</version>
</dependency>

Gradle Groovy

// https://jarcasting.com/artifacts/net.reactivecore/cassandra-caseclass-adapter_2.11/
implementation 'net.reactivecore:cassandra-caseclass-adapter_2.11:0.0.2'

Gradle Kotlin

// https://jarcasting.com/artifacts/net.reactivecore/cassandra-caseclass-adapter_2.11/
implementation ("net.reactivecore:cassandra-caseclass-adapter_2.11:0.0.2")

Apache Buildr

'net.reactivecore:cassandra-caseclass-adapter_2.11:jar:0.0.2'

Apache Ivy

<dependency org="net.reactivecore" name="cassandra-caseclass-adapter_2.11" rev="0.0.2">
  <artifact name="cassandra-caseclass-adapter_2.11" type="jar" />
</dependency>

Groovy Grape

@Grapes(
@Grab(group='net.reactivecore', module='cassandra-caseclass-adapter_2.11', version='0.0.2')
)

Scala SBT

libraryDependencies += "net.reactivecore" % "cassandra-caseclass-adapter_2.11" % "0.0.2"

Leiningen

[net.reactivecore/cassandra-caseclass-adapter_2.11 "0.0.2"]

Dependencies

compile (4)

Group / Artifact	Type	Version
org.scala-lang : scala-library	jar	2.11.12
com.chuusai : shapeless_2.11	jar	2.3.3
com.datastax.oss : java-driver-core	jar	4.7.2
com.datastax.oss : java-driver-query-builder	jar	4.7.2

test (1)

Group / Artifact	Type	Version
org.scalatest : scalatest_2.11	jar	3.0.9

Project Modules

There are no modules declared in this project.

Cassandra Case Class Adapters

Maps Case classes to the Cassandra Java Driver using shapeless powered type classes.

Note:

• this is in early development stage
• contains weird hacks and class casts
• not API stable

Thanks a lot to the Shapeless team for their wonderful work.

Add Dependency

Builds are available for Scala 2.11, 2.12 having a dependency to the Cassandra Driver 4.7.2.

Add this to your build.sbt:

libraryDependencies += "net.reactivecore" %% "cassandra-caseclass-adapter" % "0.0.2"

If you use Scala 2.10, you also need (see Shapeless Documentation)

libraryDependencies += compilerPlugin("org.scalamacros" % "paradise" % "2.1.0" cross CrossVersion.full)

Usage

Define a case class

case class Person (
    id: UUID,
    name: String,
    age: Int
  )

Have a cassandra table

  CREATE TABLE persons (
    id UUID,
    name TEXT,
    age INT,
    PRIMARY KEY (id)
  );

And let the Adapter automatically generated

  import net.reactivecore.cca.CassandraCaseClassAdapter

  val adapter = CassandraCaseClassAdapter.make[Person]("persons")
  val session = // open cassandra session
  val person = Person(UUIDs.random(), "John Doe", 42)
  adapter.insert(person, session)
  
  val back: Seq[Person] = adapter.loadAllFromCassandra(session)

Supported

• boiler plate free fromRow, insert, loadAllFromCassandra

Supported Types

• Most fundamental types
• Option
• Set of Primitives and of UDT
• List of Primitives (as Seq) and of UDT
• Primitive UDT handling

Not supported / tested yet

• Map
• Tuples
• Combination of Set/Seq with more than one UDT
• Adding custom types
• Prepared Statements for fast insert

Not planned (yet)

• Query Helpers

Testing

• The unit tests need a Cassandra Instance running on 127.0.0.1
• They will recreate a keyspace called unittest on each single testcase.

Reactive Core GmbH

Versions

Version
0.0.2 Nov 24, 2020
0.0.1 Apr 20, 2017