org.apache.flink.addons.hbase

Class HBaseLookupFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.TableFunction<org.apache.flink.types.Row>

org.apache.flink.addons.hbase.HBaseLookupFunction

All Implemented Interfaces:

Serializable, org.apache.flink.table.functions.FunctionDefinition

public class HBaseLookupFunction
extends org.apache.flink.table.functions.TableFunction<org.apache.flink.types.Row>

The HBaseLookupFunction is a standard user-defined table function, it can be used in tableAPI and also useful for temporal table join plan in SQL.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.flink.table.functions.TableFunction

collector

Constructor Summary

Constructors

Constructor and Description
HBaseLookupFunction(org.apache.hadoop.conf.Configuration configuration, String hTableName, HBaseTableSchema hbaseTableSchema)

Method Summary

Modifier and Type	Method and Description
void	close()
void	eval(Object rowKey) The invoke entry point of lookup function.
org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.types.Row>	getResultType()
void	open(org.apache.flink.table.functions.FunctionContext context)

Methods inherited from class org.apache.flink.table.functions.TableFunction

collect, getKind, getParameterTypes, setCollector

Methods inherited from class org.apache.flink.table.functions.UserDefinedFunction

functionIdentifier, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.table.functions.FunctionDefinition

getRequirements, isDeterministic

Constructor Detail

HBaseLookupFunction

public HBaseLookupFunction(org.apache.hadoop.conf.Configuration configuration,
                           String hTableName,
                           HBaseTableSchema hbaseTableSchema)

Method Detail

eval

public void eval(Object rowKey)
          throws IOException

The invoke entry point of lookup function.

Parameters:

rowKey - the lookup key. Currently only support single rowkey.

Throws:

IOException

getResultType

public org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.types.Row> getResultType()

Overrides:

getResultType in class org.apache.flink.table.functions.TableFunction<org.apache.flink.types.Row>

open

public void open(org.apache.flink.table.functions.FunctionContext context)

Overrides:

open in class org.apache.flink.table.functions.UserDefinedFunction

close

public void close()

Overrides:

close in class org.apache.flink.table.functions.UserDefinedFunction