com.datastax.driver.extras.codecs.arrays

Class ObjectArrayCodec<E>

java.lang.Object

com.datastax.driver.core.TypeCodec<T>

com.datastax.driver.extras.codecs.arrays.AbstractArrayCodec<E[]>

com.datastax.driver.extras.codecs.arrays.ObjectArrayCodec<E>

Type Parameters:

E - The Java array component type this codec handles

public class ObjectArrayCodec<E>
extends AbstractArrayCodec<E[]>

Codec dealing with Java object arrays. Serialization and deserialization of elements in the array is delegated to the provided element codec.

For example, to create a codec that maps list<text> to String[], declare the following:

 ObjectArrayCodec<String> stringArrayCodec = new ObjectArrayCodec<>(
      DataType.list(DataType.varchar()),
      String[].class,
      TypeCodec.varchar());
 

Nested Class Summary

Nested classes/interfaces inherited from class com.datastax.driver.core.TypeCodec

com.datastax.driver.core.TypeCodec.AbstractCollectionCodec<E,C extends Collection<E>>, com.datastax.driver.core.TypeCodec.AbstractMapCodec<K,V>, com.datastax.driver.core.TypeCodec.AbstractTupleCodec<T>, com.datastax.driver.core.TypeCodec.AbstractUDTCodec<T>, com.datastax.driver.core.TypeCodec.PrimitiveBooleanCodec, com.datastax.driver.core.TypeCodec.PrimitiveByteCodec, com.datastax.driver.core.TypeCodec.PrimitiveDoubleCodec, com.datastax.driver.core.TypeCodec.PrimitiveFloatCodec, com.datastax.driver.core.TypeCodec.PrimitiveIntCodec, com.datastax.driver.core.TypeCodec.PrimitiveLongCodec, com.datastax.driver.core.TypeCodec.PrimitiveShortCodec

Field Summary

Fields

Modifier and Type	Field and Description
protected com.datastax.driver.core.TypeCodec<E>	eltCodec

Fields inherited from class com.datastax.driver.core.TypeCodec

cqlType, javaType

Constructor Summary

Constructors

Constructor and Description
ObjectArrayCodec(com.datastax.driver.core.DataType.CollectionType cqlType, Class<E[]> javaClass, com.datastax.driver.core.TypeCodec<E> eltCodec)

Method Summary

Modifier and Type	Method and Description
E[]	deserialize(ByteBuffer bytes, com.datastax.driver.core.ProtocolVersion protocolVersion)
protected void	formatElement(StringBuilder output, E[] array, int index) Format the indexth element of array to output.
protected E[]	newInstance(int size) Create a new array instance with the given size.
protected void	parseElement(String input, E[] array, int index) Parse the indexth element of array from input.
ByteBuffer	serialize(E[] value, com.datastax.driver.core.ProtocolVersion protocolVersion)

Methods inherited from class com.datastax.driver.extras.codecs.arrays.AbstractArrayCodec

format, parse

Methods inherited from class com.datastax.driver.core.TypeCodec

accepts, accepts, accepts, accepts, ascii, bigint, blob, cboolean, cdouble, cfloat, cint, counter, custom, date, decimal, getCqlType, getJavaType, inet, list, map, set, smallInt, time, timestamp, timeUUID, tinyInt, toString, tuple, userType, uuid, varchar, varint

Methods inherited from class java.lang.Object

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

Field Detail

eltCodec

protected final com.datastax.driver.core.TypeCodec<E> eltCodec

Constructor Detail

ObjectArrayCodec

public ObjectArrayCodec(com.datastax.driver.core.DataType.CollectionType cqlType,
                        Class<E[]> javaClass,
                        com.datastax.driver.core.TypeCodec<E> eltCodec)

Method Detail

serialize

public ByteBuffer serialize(E[] value,
                            com.datastax.driver.core.ProtocolVersion protocolVersion)

Specified by:

serialize in class com.datastax.driver.core.TypeCodec<E[]>

deserialize

public E[] deserialize(ByteBuffer bytes,
                       com.datastax.driver.core.ProtocolVersion protocolVersion)

Specified by:

deserialize in class com.datastax.driver.core.TypeCodec<E[]>

formatElement

protected void formatElement(StringBuilder output,
                             E[] array,
                             int index)

Description copied from class: AbstractArrayCodec

Format the indexth element of array to output.

Specified by:

formatElement in class AbstractArrayCodec<E[]>

Parameters:

output - The StringBuilder to write to.

array - The array to read from.

index - The element index.

parseElement

protected void parseElement(String input,
                            E[] array,
                            int index)

Description copied from class: AbstractArrayCodec

Parse the indexth element of array from input.

Specified by:

parseElement in class AbstractArrayCodec<E[]>

Parameters:

input - The String to read from.

array - The array to write to.

index - The element index.

newInstance

protected E[] newInstance(int size)

Description copied from class: AbstractArrayCodec

Create a new array instance with the given size.

Specified by:

newInstance in class AbstractArrayCodec<E[]>

Parameters:

size - The size of the array to instantiate.

Returns:

a new array instance with the given size.