org.apache.flink.table.filesystem

类 FileSystemTableSource

java.lang.Object

org.apache.flink.table.filesystem.FileSystemTableSource

所有已实现的接口:

org.apache.flink.table.sources.FilterableTableSource<org.apache.flink.table.data.RowData>, org.apache.flink.table.sources.LimitableTableSource<org.apache.flink.table.data.RowData>, org.apache.flink.table.sources.PartitionableTableSource, org.apache.flink.table.sources.ProjectableTableSource<org.apache.flink.table.data.RowData>, org.apache.flink.table.sources.StreamTableSource<org.apache.flink.table.data.RowData>, org.apache.flink.table.sources.TableSource<org.apache.flink.table.data.RowData>

public class FileSystemTableSource
extends Object
implements org.apache.flink.table.sources.StreamTableSource<org.apache.flink.table.data.RowData>, org.apache.flink.table.sources.PartitionableTableSource, org.apache.flink.table.sources.ProjectableTableSource<org.apache.flink.table.data.RowData>, org.apache.flink.table.sources.LimitableTableSource<org.apache.flink.table.data.RowData>, org.apache.flink.table.sources.FilterableTableSource<org.apache.flink.table.data.RowData>

File system table source.

构造器概要

构造器

构造器和说明
FileSystemTableSource(org.apache.flink.table.api.TableSchema schema, org.apache.flink.core.fs.Path path, List<String> partitionKeys, String defaultPartName, Map<String,String> properties) Construct a file system table source.

方法概要

限定符和类型	方法和说明
FileSystemTableSource	applyLimit(long limit)
FileSystemTableSource	applyPartitionPruning(List<Map<String,String>> remainingPartitions)
FileSystemTableSource	applyPredicate(List<org.apache.flink.table.expressions.Expression> predicates)
String	explainSource()
org.apache.flink.streaming.api.datastream.DataStream<org.apache.flink.table.data.RowData>	getDataStream(org.apache.flink.streaming.api.environment.StreamExecutionEnvironment execEnv)
List<Map<String,String>>	getPartitions()
org.apache.flink.table.types.DataType	getProducedDataType()
org.apache.flink.table.api.TableSchema	getTableSchema()
boolean	isBounded()
boolean	isFilterPushedDown()
boolean	isLimitPushedDown()
FileSystemTableSource	projectFields(int[] fields)

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.table.sources.TableSource

getReturnType

构造器详细资料

FileSystemTableSource

public FileSystemTableSource(org.apache.flink.table.api.TableSchema schema,
                             org.apache.flink.core.fs.Path path,
                             List<String> partitionKeys,
                             String defaultPartName,
                             Map<String,String> properties)

Construct a file system table source.

参数:

schema - schema of the table.

path - directory path of the file system table.

partitionKeys - partition keys of the table.

defaultPartName - The default partition name in case the dynamic partition column value is null/empty string.

properties - table properties.

方法详细资料

getDataStream

public org.apache.flink.streaming.api.datastream.DataStream<org.apache.flink.table.data.RowData> getDataStream(org.apache.flink.streaming.api.environment.StreamExecutionEnvironment execEnv)

指定者:

getDataStream 在接口中 org.apache.flink.table.sources.StreamTableSource<org.apache.flink.table.data.RowData>

isBounded

public boolean isBounded()

指定者:

isBounded 在接口中 org.apache.flink.table.sources.StreamTableSource<org.apache.flink.table.data.RowData>

getPartitions

public List<Map<String,String>> getPartitions()

指定者:

getPartitions 在接口中 org.apache.flink.table.sources.PartitionableTableSource

applyPartitionPruning

public FileSystemTableSource applyPartitionPruning(List<Map<String,String>> remainingPartitions)

指定者:

applyPartitionPruning 在接口中 org.apache.flink.table.sources.PartitionableTableSource

projectFields

public FileSystemTableSource projectFields(int[] fields)

指定者:

projectFields 在接口中 org.apache.flink.table.sources.ProjectableTableSource<org.apache.flink.table.data.RowData>

applyLimit

public FileSystemTableSource applyLimit(long limit)

指定者:

applyLimit 在接口中 org.apache.flink.table.sources.LimitableTableSource<org.apache.flink.table.data.RowData>

isLimitPushedDown

public boolean isLimitPushedDown()

指定者:

isLimitPushedDown 在接口中 org.apache.flink.table.sources.LimitableTableSource<org.apache.flink.table.data.RowData>

applyPredicate

public FileSystemTableSource applyPredicate(List<org.apache.flink.table.expressions.Expression> predicates)

指定者:

applyPredicate 在接口中 org.apache.flink.table.sources.FilterableTableSource<org.apache.flink.table.data.RowData>

isFilterPushedDown

public boolean isFilterPushedDown()

指定者:

isFilterPushedDown 在接口中 org.apache.flink.table.sources.FilterableTableSource<org.apache.flink.table.data.RowData>

getProducedDataType

public org.apache.flink.table.types.DataType getProducedDataType()

指定者:

getProducedDataType 在接口中 org.apache.flink.table.sources.TableSource<org.apache.flink.table.data.RowData>

getTableSchema

public org.apache.flink.table.api.TableSchema getTableSchema()

指定者:

getTableSchema 在接口中 org.apache.flink.table.sources.TableSource<org.apache.flink.table.data.RowData>

explainSource

public String explainSource()

指定者:

explainSource 在接口中 org.apache.flink.table.sources.TableSource<org.apache.flink.table.data.RowData>