org.apache.hadoop.hive.dynamodb.type

Class HiveDynamoDBItemType

java.lang.Object

org.apache.hadoop.hive.dynamodb.type.HiveDynamoDBItemType

All Implemented Interfaces:

DynamoDBItemType, DynamoDBType, HiveDynamoDBType

public class HiveDynamoDBItemType
extends Object
implements DynamoDBItemType, HiveDynamoDBType

Constructor Summary

Constructors

Constructor and Description
HiveDynamoDBItemType()

Method Summary

Modifier and Type	Method and Description
Map<String,String>	buildHiveData(Map<String,com.amazonaws.services.dynamodbv2.model.AttributeValue> dynamoDBItem) Converts a DynamoDB item to a Map<String, String>.
static com.amazonaws.services.dynamodbv2.model.AttributeValue	deserializeAttributeValue(String value)
com.amazonaws.services.dynamodbv2.model.AttributeValue	getAttributeValue(String... values)
com.amazonaws.services.dynamodbv2.model.AttributeValue	getDynamoDBData(Object data, org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector objectInspector, boolean nullSerialization)
String	getDynamoDBType()
Object	getHiveData(com.amazonaws.services.dynamodbv2.model.AttributeValue data, org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector objectInspector)
DynamoDBKey	getKey(String key)
org.apache.hadoop.hive.serde2.typeinfo.TypeInfo	getSupportedHiveType()
Map<String,com.amazonaws.services.dynamodbv2.model.AttributeValue>	parseDynamoDBData(Object data, org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector fieldObjectInspector) Converts a Hive column of type Map&lt;String,String&gt; into a DynamoDB item.
boolean	supportsHiveType(org.apache.hadoop.hive.serde2.typeinfo.TypeInfo typeInfo)

Methods inherited from class java.lang.Object

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

Constructor Detail

HiveDynamoDBItemType

public HiveDynamoDBItemType()

Method Detail

getHiveData

public Object getHiveData(com.amazonaws.services.dynamodbv2.model.AttributeValue data,
                          org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector objectInspector)

Specified by:

getHiveData in interface HiveDynamoDBType

getDynamoDBData

public com.amazonaws.services.dynamodbv2.model.AttributeValue getDynamoDBData(Object data,
                                                                              org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector objectInspector,
                                                                              boolean nullSerialization)

Specified by:

getDynamoDBData in interface HiveDynamoDBType

getSupportedHiveType

public org.apache.hadoop.hive.serde2.typeinfo.TypeInfo getSupportedHiveType()

Specified by:

getSupportedHiveType in interface HiveDynamoDBType

supportsHiveType

public boolean supportsHiveType(org.apache.hadoop.hive.serde2.typeinfo.TypeInfo typeInfo)

Specified by:

supportsHiveType in interface HiveDynamoDBType

getAttributeValue

public com.amazonaws.services.dynamodbv2.model.AttributeValue getAttributeValue(String... values)

Specified by:

getAttributeValue in interface DynamoDBType

getDynamoDBType

public String getDynamoDBType()

Specified by:

getDynamoDBType in interface DynamoDBType

getKey

public DynamoDBKey getKey(String key)

Specified by:

getKey in interface DynamoDBType

buildHiveData

public Map<String,String> buildHiveData(Map<String,com.amazonaws.services.dynamodbv2.model.AttributeValue> dynamoDBItem)

Converts a DynamoDB item to a Map<String, String>. The keys in this new map are attribute names of the item. The values in the map are JSON serialization of corresponding AttributeValue in the DynamoDB item.

Parameters:

dynamoDBItem - Map representing the DynamoDB AttributeValue

Returns:

A Map<String, String> type for Hive to store.

parseDynamoDBData

public Map<String,com.amazonaws.services.dynamodbv2.model.AttributeValue> parseDynamoDBData(Object data,
                                                                                            org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector fieldObjectInspector)
                                                                                     throws org.apache.hadoop.hive.serde2.SerDeException

Converts a Hive column of type Map<String,String> into a DynamoDB item. It is expected that the Hive data is a map of type <String, String>. The key in Hive data map is converted to a DynamoDB attribute name. The corresponding value in Hive data map is converted into DynamoDB AttributeValue. This attribute value is expected to be a JSON serialized AttributeValue.

Parameters:

data - Data from Hive

fieldObjectInspector - The object inspector for the Hive data. Must have TypeName Map<String,String>.

Returns:

DynamoDB item representation of provided data from Hive as a Map<String,AttributeValue>.

Throws:

org.apache.hadoop.hive.serde2.SerDeException

deserializeAttributeValue

public static com.amazonaws.services.dynamodbv2.model.AttributeValue deserializeAttributeValue(String value)