com.datastax.driver.extras.codecs.arrays

Class AbstractPrimitiveArrayCodec<T>

java.lang.Object

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

com.datastax.driver.extras.codecs.arrays.AbstractArrayCodec<T>

com.datastax.driver.extras.codecs.arrays.AbstractPrimitiveArrayCodec<T>

Type Parameters:

T - The Java primitive array type this codec handles

Direct Known Subclasses:

DoubleArrayCodec, FloatArrayCodec, IntArrayCodec, LongArrayCodec

public abstract class AbstractPrimitiveArrayCodec<T>
extends AbstractArrayCodec<T>

Base class for all codecs dealing with Java primitive arrays. This class provides a more efficient implementation of serialize(Object, ProtocolVersion) and deserialize(ByteBuffer, ProtocolVersion) for primitive arrays.

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

cqlType, javaType

Constructor Summary

Constructors

Constructor and Description
AbstractPrimitiveArrayCodec(com.datastax.driver.core.DataType.CollectionType cqlType, Class<T> javaClass)

Method Summary

Modifier and Type	Method and Description
T	deserialize(ByteBuffer bytes, com.datastax.driver.core.ProtocolVersion protocolVersion)
protected abstract void	deserializeElement(ByteBuffer input, T array, int index, com.datastax.driver.core.ProtocolVersion protocolVersion) Read the indexth element of array from input.
ByteBuffer	serialize(T array, com.datastax.driver.core.ProtocolVersion protocolVersion)
protected abstract void	serializeElement(ByteBuffer output, T array, int index, com.datastax.driver.core.ProtocolVersion protocolVersion) Write the indexth element of array to output.
protected abstract int	sizeOfComponentType() Return the size in bytes of the array component type.

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

format, formatElement, newInstance, parse, parseElement

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

Constructor Detail

AbstractPrimitiveArrayCodec

public AbstractPrimitiveArrayCodec(com.datastax.driver.core.DataType.CollectionType cqlType,
                                   Class<T> javaClass)

Parameters:

cqlType - The CQL type. Must be a list type.

javaClass - The Java type. Must be an array class.

Method Detail

serialize

public ByteBuffer serialize(T array,
                            com.datastax.driver.core.ProtocolVersion protocolVersion)
                     throws com.datastax.driver.core.exceptions.InvalidTypeException

Specified by:

serialize in class com.datastax.driver.core.TypeCodec<T>

Throws:

com.datastax.driver.core.exceptions.InvalidTypeException

deserialize

public T deserialize(ByteBuffer bytes,
                     com.datastax.driver.core.ProtocolVersion protocolVersion)
              throws com.datastax.driver.core.exceptions.InvalidTypeException

Specified by:

deserialize in class com.datastax.driver.core.TypeCodec<T>

Throws:

com.datastax.driver.core.exceptions.InvalidTypeException

sizeOfComponentType

protected abstract int sizeOfComponentType()

Return the size in bytes of the array component type.

Returns:

the size in bytes of the array component type.

serializeElement

protected abstract void serializeElement(ByteBuffer output,
                                         T array,
                                         int index,
                                         com.datastax.driver.core.ProtocolVersion protocolVersion)

Write the indexth element of array to output.

Parameters:

output - The ByteBuffer to write to.

array - The array to read from.

index - The element index.

protocolVersion - The protocol version to use.

deserializeElement

protected abstract void deserializeElement(ByteBuffer input,
                                           T array,
                                           int index,
                                           com.datastax.driver.core.ProtocolVersion protocolVersion)

Read the indexth element of array from input.

Parameters:

input - The ByteBuffer to read from.

array - The array to write to.

index - The element index.

protocolVersion - The protocol version to use.