org.apache.flink.addons.hbase

类 HBaseRowInputFormat

java.lang.Object

org.apache.flink.api.common.io.RichInputFormat<T,TableInputSplit>

org.apache.flink.addons.hbase.AbstractTableInputFormat<org.apache.flink.types.Row>

org.apache.flink.addons.hbase.HBaseRowInputFormat

所有已实现的接口:

Serializable, org.apache.flink.api.common.io.InputFormat<org.apache.flink.types.Row,TableInputSplit>, org.apache.flink.api.java.typeutils.ResultTypeQueryable<org.apache.flink.types.Row>, org.apache.flink.core.io.InputSplitSource<TableInputSplit>

public class HBaseRowInputFormat
extends AbstractTableInputFormat<org.apache.flink.types.Row>
implements org.apache.flink.api.java.typeutils.ResultTypeQueryable<org.apache.flink.types.Row>

InputFormat subclass that wraps the access for HTables. Returns the result as Row

另请参阅:

序列化表格

字段概要

从类继承的字段 org.apache.flink.addons.hbase.AbstractTableInputFormat

currentRow, endReached, resultScanner, scan, scannedRows, table

构造器概要

构造器

构造器和说明
HBaseRowInputFormat(org.apache.hadoop.conf.Configuration conf, String tableName, HBaseTableSchema schema)

方法概要

限定符和类型	方法和说明
void	configure(org.apache.flink.configuration.Configuration parameters) Creates a Scan object and opens the HTable connection.
org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.types.Row>	getProducedType()
protected org.apache.hadoop.hbase.client.Scan	getScanner() Returns an instance of Scan that retrieves the required subset of records from the HBase table.
String	getTableName() What table is to be read.
protected org.apache.flink.types.Row	mapResultToOutType(org.apache.hadoop.hbase.client.Result res) HBase returns an instance of Result.

从类继承的方法 org.apache.flink.addons.hbase.AbstractTableInputFormat

close, closeInputFormat, createInputSplits, getInputSplitAssigner, getStatistics, includeRegionInScan, nextRecord, open, reachedEnd

从类继承的方法 org.apache.flink.api.common.io.RichInputFormat

getRuntimeContext, openInputFormat, setRuntimeContext

从类继承的方法 java.lang.Object

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

构造器详细资料

HBaseRowInputFormat

public HBaseRowInputFormat(org.apache.hadoop.conf.Configuration conf,
                           String tableName,
                           HBaseTableSchema schema)

方法详细资料

configure

public void configure(org.apache.flink.configuration.Configuration parameters)

从类复制的说明: AbstractTableInputFormat

Creates a Scan object and opens the HTable connection.

These are opened here because they are needed in the createInputSplits which is called before the openInputFormat method.

The connection is opened in this method and closed in AbstractTableInputFormat.closeInputFormat().

指定者:

configure 在接口中 org.apache.flink.api.common.io.InputFormat<org.apache.flink.types.Row,TableInputSplit>

指定者:

configure 在类中 AbstractTableInputFormat<org.apache.flink.types.Row>

参数:

parameters - The configuration that is to be used

另请参阅:

Configuration

getScanner

protected org.apache.hadoop.hbase.client.Scan getScanner()

从类复制的说明: AbstractTableInputFormat

Returns an instance of Scan that retrieves the required subset of records from the HBase table.

指定者:

getScanner 在类中 AbstractTableInputFormat<org.apache.flink.types.Row>

返回:

The appropriate instance of Scan for this use case.

getTableName

public String getTableName()

从类复制的说明: AbstractTableInputFormat

What table is to be read.

Per instance of a TableInputFormat derivative only a single table name is possible.

指定者:

getTableName 在类中 AbstractTableInputFormat<org.apache.flink.types.Row>

返回:

The name of the table

mapResultToOutType

protected org.apache.flink.types.Row mapResultToOutType(org.apache.hadoop.hbase.client.Result res)

从类复制的说明: AbstractTableInputFormat

HBase returns an instance of Result.

This method maps the returned Result instance into the output type T.

指定者:

mapResultToOutType 在类中 AbstractTableInputFormat<org.apache.flink.types.Row>

参数:

res - The Result instance from HBase that needs to be converted

返回:

The appropriate instance of T that contains the data of Result.

getProducedType

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

指定者:

getProducedType 在接口中 org.apache.flink.api.java.typeutils.ResultTypeQueryable<org.apache.flink.types.Row>