com.netflix.astyanax.entitystore

Class CompositeColumnEntityMapper

java.lang.Object

com.netflix.astyanax.entitystore.CompositeColumnEntityMapper

public class CompositeColumnEntityMapper
extends java.lang.Object

Mapper from a CompositeType to an embedded entity. The composite entity is expected to have an @Id annotation for each composite component and a @Column annotation for the value.

Constructor Summary

Constructors

Constructor and Description
CompositeColumnEntityMapper(java.lang.reflect.Field field)

Method Summary

Modifier and Type	Method and Description
void	fillColumnMutation(com.netflix.astyanax.ColumnListMutation<java.nio.ByteBuffer> clm, java.lang.Object entity) Add a column based on the provided entity
void	fillMutationBatch(com.netflix.astyanax.ColumnListMutation<java.nio.ByteBuffer> clm, java.lang.Object entity) Iterate through the list and create a column for each element
void	fillMutationBatchForDelete(com.netflix.astyanax.ColumnListMutation<java.nio.ByteBuffer> clm, java.lang.Object entity)
java.lang.Object	fromColumn(com.netflix.astyanax.model.Column<java.nio.ByteBuffer> c) Return an object from the column
java.lang.Object	fromCqlColumns(com.netflix.astyanax.model.ColumnList<java.nio.ByteBuffer> c)
static java.nio.ByteBuffer	getBytes(java.nio.ByteBuffer bb, int length)
java.lang.String	getComparatorType() Return the cassandra comparator type for this composite structure
java.nio.ByteBuffer[]	getQueryEndpoints(java.util.Collection<com.netflix.astyanax.query.ColumnPredicate> predicates)
static int	getShortLength(java.nio.ByteBuffer bb)
java.lang.String	getValueType()
static java.nio.ByteBuffer	getWithShortLength(java.nio.ByteBuffer bb)
void	setEntityFieldsFromColumnName(java.lang.Object entity, java.nio.ByteBuffer columnName)
boolean	setField(java.lang.Object entity, com.netflix.astyanax.model.ColumnList<java.nio.ByteBuffer> columns) Set the collection field using the provided column list of embedded entities
boolean	setFieldFromCql(java.lang.Object entity, com.netflix.astyanax.model.ColumnList<java.nio.ByteBuffer> columns)
java.nio.ByteBuffer	toColumnName(java.lang.Object obj) Return the column name byte buffer for this entity

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositeColumnEntityMapper

public CompositeColumnEntityMapper(java.lang.reflect.Field field)

Method Detail

fillMutationBatch

public void fillMutationBatch(com.netflix.astyanax.ColumnListMutation<java.nio.ByteBuffer> clm,
                              java.lang.Object entity)
                       throws java.lang.IllegalArgumentException,
                              java.lang.IllegalAccessException

Iterate through the list and create a column for each element

Parameters:

clm -

entity -

Throws:

java.lang.IllegalArgumentException

java.lang.IllegalAccessException

fillMutationBatchForDelete

public void fillMutationBatchForDelete(com.netflix.astyanax.ColumnListMutation<java.nio.ByteBuffer> clm,
                                       java.lang.Object entity)
                                throws java.lang.IllegalArgumentException,
                                       java.lang.IllegalAccessException

Throws:

java.lang.IllegalArgumentException

java.lang.IllegalAccessException

fillColumnMutation

public void fillColumnMutation(com.netflix.astyanax.ColumnListMutation<java.nio.ByteBuffer> clm,
                               java.lang.Object entity)

Add a column based on the provided entity

Parameters:

clm -

entity -

toColumnName

public java.nio.ByteBuffer toColumnName(java.lang.Object obj)

Return the column name byte buffer for this entity

Parameters:

obj -

Returns:

setField

public boolean setField(java.lang.Object entity,
                        com.netflix.astyanax.model.ColumnList<java.nio.ByteBuffer> columns)
                 throws java.lang.Exception

Set the collection field using the provided column list of embedded entities

Parameters:

entity -

name -

column -

Returns:

Throws:

java.lang.Exception

setFieldFromCql

public boolean setFieldFromCql(java.lang.Object entity,
                               com.netflix.astyanax.model.ColumnList<java.nio.ByteBuffer> columns)
                        throws java.lang.Exception

Throws:

java.lang.Exception

fromColumn

public java.lang.Object fromColumn(com.netflix.astyanax.model.Column<java.nio.ByteBuffer> c)

Return an object from the column

Parameters:

cl -

Returns:

fromCqlColumns

public java.lang.Object fromCqlColumns(com.netflix.astyanax.model.ColumnList<java.nio.ByteBuffer> c)

setEntityFieldsFromColumnName

public void setEntityFieldsFromColumnName(java.lang.Object entity,
                                          java.nio.ByteBuffer columnName)
                                   throws java.lang.IllegalArgumentException,
                                          java.lang.IllegalAccessException

Parameters:

entity -

columnName -

Throws:

java.lang.IllegalArgumentException

java.lang.IllegalAccessException

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)

getValueType

public java.lang.String getValueType()

getQueryEndpoints

public java.nio.ByteBuffer[] getQueryEndpoints(java.util.Collection<com.netflix.astyanax.query.ColumnPredicate> predicates)