org.apache.lens.lib.query

Class CSVSerde

java.lang.Object

org.apache.hadoop.hive.serde2.AbstractSerDe

org.apache.lens.lib.query.CSVSerde

All Implemented Interfaces:

org.apache.hadoop.hive.serde2.Deserializer, org.apache.hadoop.hive.serde2.SerDe, org.apache.hadoop.hive.serde2.Serializer

public final class CSVSerde
extends org.apache.hadoop.hive.serde2.AbstractSerDe

CSVSerde uses opencsv (http://opencsv.sourceforge.net/) to serialize/deserialize columns as CSV.

Field Summary

Fields

Modifier and Type	Field and Description
static char	DEFAULT_COLLECTION_SEPERATOR The default collection seperator.
static char	DEFAULT_MAP_KEY_VALUE_SEPERATOR The default map key value seperator.
static String	DEFAULT_NULL_FORMAT The default null format.
static char	DEFAULT_STRUCT_FIELD_SEPERATOR The default struct field seperator.
static char	DEFAULT_UNION_TAG_FIELD_SEPERATOR The default union tag field seperator.

Constructor Summary

Constructors

Constructor and Description
CSVSerde()

Method Summary

Methods

Modifier and Type	Method and Description
Object	deserialize(org.apache.hadoop.io.Writable blob)
org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector	getObjectInspector()
org.apache.hadoop.hive.serde2.SerDeStats	getSerDeStats()
Class<? extends org.apache.hadoop.io.Writable>	getSerializedClass()
void	initialize(org.apache.hadoop.conf.Configuration conf, Properties tbl)
org.apache.hadoop.io.Writable	serialize(Object obj, org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector objInspector)

Methods inherited from class org.apache.hadoop.hive.serde2.AbstractSerDe

getConfigurationErrors, initialize, shouldStoreFieldsInMetastore

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_NULL_FORMAT

public static final String DEFAULT_NULL_FORMAT

The default null format.

See Also:

Constant Field Values

DEFAULT_COLLECTION_SEPERATOR

public static final char DEFAULT_COLLECTION_SEPERATOR

The default collection seperator.

See Also:

Constant Field Values

DEFAULT_STRUCT_FIELD_SEPERATOR

public static final char DEFAULT_STRUCT_FIELD_SEPERATOR

The default struct field seperator.

See Also:

Constant Field Values

DEFAULT_UNION_TAG_FIELD_SEPERATOR

public static final char DEFAULT_UNION_TAG_FIELD_SEPERATOR

The default union tag field seperator.

See Also:

Constant Field Values

DEFAULT_MAP_KEY_VALUE_SEPERATOR

public static final char DEFAULT_MAP_KEY_VALUE_SEPERATOR

The default map key value seperator.

See Also:

Constant Field Values

Constructor Detail

CSVSerde

public CSVSerde()

Method Detail

initialize

public void initialize(org.apache.hadoop.conf.Configuration conf,
              Properties tbl)
                throws org.apache.hadoop.hive.serde2.SerDeException

Specified by:

initialize in interface org.apache.hadoop.hive.serde2.Deserializer

Specified by:

initialize in interface org.apache.hadoop.hive.serde2.Serializer

Specified by:

initialize in class org.apache.hadoop.hive.serde2.AbstractSerDe

Throws:

org.apache.hadoop.hive.serde2.SerDeException

serialize

public org.apache.hadoop.io.Writable serialize(Object obj,
                                      org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector objInspector)
                                        throws org.apache.hadoop.hive.serde2.SerDeException

Specified by:

serialize in interface org.apache.hadoop.hive.serde2.Serializer

Specified by:

serialize in class org.apache.hadoop.hive.serde2.AbstractSerDe

Throws:

org.apache.hadoop.hive.serde2.SerDeException

deserialize

public Object deserialize(org.apache.hadoop.io.Writable blob)
                   throws org.apache.hadoop.hive.serde2.SerDeException

Specified by:

deserialize in interface org.apache.hadoop.hive.serde2.Deserializer

Specified by:

deserialize in class org.apache.hadoop.hive.serde2.AbstractSerDe

Throws:

org.apache.hadoop.hive.serde2.SerDeException

getObjectInspector

public org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector getObjectInspector()
                                                                                 throws org.apache.hadoop.hive.serde2.SerDeException

Specified by:

getObjectInspector in interface org.apache.hadoop.hive.serde2.Deserializer

Specified by:

getObjectInspector in class org.apache.hadoop.hive.serde2.AbstractSerDe

Throws:

org.apache.hadoop.hive.serde2.SerDeException

getSerializedClass

public Class<? extends org.apache.hadoop.io.Writable> getSerializedClass()

Specified by:

getSerializedClass in interface org.apache.hadoop.hive.serde2.Serializer

Specified by:

getSerializedClass in class org.apache.hadoop.hive.serde2.AbstractSerDe

getSerDeStats

public org.apache.hadoop.hive.serde2.SerDeStats getSerDeStats()

Specified by:

getSerDeStats in interface org.apache.hadoop.hive.serde2.Deserializer

Specified by:

getSerDeStats in interface org.apache.hadoop.hive.serde2.Serializer

Specified by:

getSerDeStats in class org.apache.hadoop.hive.serde2.AbstractSerDe