org.apache.gora.hbase.util

Class HBaseByteInterface

java.lang.Object

org.apache.gora.hbase.util.HBaseByteInterface

public class HBaseByteInterface
extends Object

Contains utility methods for byte[] <-> field conversions.

Field Summary

Fields

Modifier and Type	Field and Description
static ThreadLocal<org.apache.avro.io.BinaryDecoder>	decoders
static ThreadLocal<org.apache.avro.io.BinaryEncoder>	encoders
static ConcurrentHashMap<String,org.apache.avro.specific.SpecificDatumReader<?>>	readerMap
static ConcurrentHashMap<String,org.apache.avro.specific.SpecificDatumWriter<?>>	writerMap

Constructor Summary

Constructors

Constructor and Description
HBaseByteInterface()

Method Summary

Methods

Modifier and Type	Method and Description
static <K> K	fromBytes(Class<K> clazz, byte[] val) Converts an array of bytes to the target basic class.
static Object	fromBytes(org.apache.avro.Schema schema, byte[] val) Deserializes an array of bytes matching the given schema to the proper basic (enum, Utf8,...) or complex type (Persistent/Record).
static byte[]	toBytes(Object o) Converts an instance of a basic class to an array of bytes.
static byte[]	toBytes(Object o, org.apache.avro.Schema schema) Serializes an object following the given schema.

Methods inherited from class java.lang.Object

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

Field Detail

decoders

public static final ThreadLocal<org.apache.avro.io.BinaryDecoder> decoders

encoders

public static final ThreadLocal<org.apache.avro.io.BinaryEncoder> encoders

readerMap

public static final ConcurrentHashMap<String,org.apache.avro.specific.SpecificDatumReader<?>> readerMap

writerMap

public static final ConcurrentHashMap<String,org.apache.avro.specific.SpecificDatumWriter<?>> writerMap

Constructor Detail

HBaseByteInterface

public HBaseByteInterface()

Method Detail

fromBytes

public static Object fromBytes(org.apache.avro.Schema schema,
               byte[] val)
                        throws IOException

Deserializes an array of bytes matching the given schema to the proper basic (enum, Utf8,...) or complex type (Persistent/Record). Does not handle arrays/maps if not inside a record type.

Parameters:

schema - Avro schema describing the expected data

val - array of bytes with the data serialized

Returns:

Enum|Utf8|ByteBuffer|Integer|Long|Float|Double|Boolean|Persistent|Null

Throws:

IOException

fromBytes

public static <K> K fromBytes(Class<K> clazz,
              byte[] val)

Converts an array of bytes to the target basic class.

Parameters:

clazz - (Byte|Boolean|Short|Integer|Long|Float|Double|String|Utf8).class

val - array of bytes with the value

Returns:

an instance of clazz with the bytes in val deserialized with org.apache.hadoop.hbase.util.Bytes

toBytes

public static byte[] toBytes(Object o)

Converts an instance of a basic class to an array of bytes.

Parameters:

o - Instance of Enum|Byte|Boolean|Short|Integer|Long|Float|Double|String|Utf8

Returns:

array of bytes with o serialized with org.apache.hadoop.hbase.util.Bytes

toBytes

public static byte[] toBytes(Object o,
             org.apache.avro.Schema schema)
                      throws IOException

Serializes an object following the given schema. Does not handle array/map if it is not inside a record

Parameters:

o - Utf8|ByteBuffer|Integer|Long|Float|Double|Boolean|Enum|Persistent

schema - The schema describing the object (or a compatible description)

Returns:

array of bytes of the serialized object

Throws:

IOException