org.apache.flink.connector.file.src.reader

类 TextLineInputFormat

java.lang.Object

org.apache.flink.connector.file.src.reader.SimpleStreamFormat<String>

org.apache.flink.connector.file.src.reader.TextLineInputFormat

所有已实现的接口:

Serializable, org.apache.flink.api.java.typeutils.ResultTypeQueryable<String>, StreamFormat<String>

直接已知子类:

TextLineFormat

@PublicEvolving
public class TextLineInputFormat
extends SimpleStreamFormat<String>

A reader format that text lines from a file.

The reader uses Java's built-in InputStreamReader to decode the byte stream using various supported charset encodings.

This format does not support optimized recovery from checkpoints. On recovery, it will re-read and discard the number of lined that were processed before the last checkpoint. That is due to the fact that the offsets of lines in the file cannot be tracked through the charset decoders with their internal buffering of stream input and charset decoder state.

另请参阅:

序列化表格

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	TextLineInputFormat.Reader The actual reader for the TextLineInputFormat.

字段概要

字段

限定符和类型	字段和说明
static String	DEFAULT_CHARSET_NAME

从接口继承的字段 org.apache.flink.connector.file.src.reader.StreamFormat

FETCH_IO_SIZE

构造器概要

构造器

构造器和说明
TextLineInputFormat()
TextLineInputFormat(String charsetName)

方法概要

限定符和类型	方法和说明
TextLineInputFormat.Reader	createReader(org.apache.flink.configuration.Configuration config, org.apache.flink.core.fs.FSDataInputStream stream) Creates a new reader.
org.apache.flink.api.common.typeinfo.TypeInformation<String>	getProducedType() Gets the type produced by this format.

从类继承的方法 org.apache.flink.connector.file.src.reader.SimpleStreamFormat

createReader, isSplittable, restoreReader

从类继承的方法 java.lang.Object

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

字段详细资料

DEFAULT_CHARSET_NAME

public static final String DEFAULT_CHARSET_NAME

另请参阅:

常量字段值

构造器详细资料

TextLineInputFormat

public TextLineInputFormat()

TextLineInputFormat

public TextLineInputFormat(String charsetName)

方法详细资料

createReader

public TextLineInputFormat.Reader createReader(org.apache.flink.configuration.Configuration config,
                                               org.apache.flink.core.fs.FSDataInputStream stream)
                                        throws IOException

从类复制的说明: SimpleStreamFormat

Creates a new reader. This method is called both for the creation of new reader (from the beginning of a file) and for restoring checkpointed readers.

If the reader previously checkpointed an offset, then the input stream will be positioned to that particular offset. Readers checkpoint an offset by returning a value from the method Reader#getCheckpointedPosition() method with an offset other than CheckpointedPosition.NO_OFFSET).

指定者:

createReader 在类中 SimpleStreamFormat<String>

抛出:

IOException

getProducedType

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

从类复制的说明: SimpleStreamFormat

Gets the type produced by this format. This type will be the type produced by the file source as a whole.

指定者:

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

指定者:

getProducedType 在接口中 StreamFormat<String>

指定者:

getProducedType 在类中 SimpleStreamFormat<String>