com.netflix.astyanax.entitystore

Class CompositeEntityMapper<T,K>

java.lang.Object

com.netflix.astyanax.entitystore.CompositeEntityMapper<T,K>

Type Parameters:

T -

K -

public class CompositeEntityMapper<T,K>
extends java.lang.Object

The composite entity mapper maps a Pojo to a composite column structure where the row key represents the Pojo ID, each @Column is a component of the composite and the final @Column is the column value.

Constructor Summary

Constructors

Constructor and Description
CompositeEntityMapper(java.lang.Class<T> clazz, java.lang.Integer ttl, java.nio.ByteBuffer prefix)

Method Summary

Modifier and Type	Method and Description
static java.nio.ByteBuffer	getBytes(java.nio.ByteBuffer bb, int length)
java.lang.String	getComparatorType() Return the cassandra comparator type for this composite structure
K	getEntityId(T entity)
java.lang.String	getEntityName()
java.lang.String	getKeyType()
static int	getShortLength(java.nio.ByteBuffer bb)
static java.nio.ByteBuffer	getWithShortLength(java.nio.ByteBuffer bb)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositeEntityMapper

public CompositeEntityMapper(java.lang.Class<T> clazz,
                             java.lang.Integer ttl,
                             java.nio.ByteBuffer prefix)

Parameters:

clazz -

prefix -

Throws:

java.lang.IllegalArgumentException - if clazz is NOT annotated with @Entity if column name contains illegal char (like dot)

Method Detail

getEntityId

public K getEntityId(T entity)
              throws java.lang.Exception

Throws:

java.lang.Exception

getEntityName

public java.lang.String getEntityName()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getKeyType

public java.lang.String getKeyType()

getComparatorType

public java.lang.String getComparatorType()

Return the cassandra comparator type for this composite structure

Returns:

getShortLength

public static int getShortLength(java.nio.ByteBuffer bb)

getWithShortLength

public static java.nio.ByteBuffer getWithShortLength(java.nio.ByteBuffer bb)

getBytes

public static java.nio.ByteBuffer getBytes(java.nio.ByteBuffer bb,
                                           int length)