org.apache.flink.connector.file.table

类 DeserializationSchemaAdapter

java.lang.Object

org.apache.flink.connector.file.table.DeserializationSchemaAdapter

所有已实现的接口:

Serializable, org.apache.flink.api.java.typeutils.ResultTypeQueryable<org.apache.flink.table.data.RowData>, BulkFormat<org.apache.flink.table.data.RowData,FileSourceSplit>

@Internal
public class DeserializationSchemaAdapter
extends Object
implements BulkFormat<org.apache.flink.table.data.RowData,FileSourceSplit>

Adapter to turn a DeserializationSchema into a BulkFormat.

另请参阅:

序列化表格

嵌套类概要

从接口继承的嵌套类/接口 org.apache.flink.connector.file.src.reader.BulkFormat

BulkFormat.RecordIterator<T>

构造器概要

构造器

构造器和说明
DeserializationSchemaAdapter(org.apache.flink.api.common.serialization.DeserializationSchema<org.apache.flink.table.data.RowData> deserializationSchema)

方法概要

限定符和类型	方法和说明
org.apache.flink.connector.file.table.DeserializationSchemaAdapter.Reader	createReader(org.apache.flink.configuration.Configuration config, FileSourceSplit split) Creates a new reader that reads from the split's path starting at the FileSourceSplit.offset() split's offset} and reads length bytes after the offset.
org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.table.data.RowData>	getProducedType() Gets the type produced by this format.
boolean	isSplittable() Checks whether this format is splittable.
org.apache.flink.connector.file.table.DeserializationSchemaAdapter.Reader	restoreReader(org.apache.flink.configuration.Configuration config, FileSourceSplit split) Creates a new reader that reads from split.path() starting at offset and reads until length bytes after the offset.

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

DeserializationSchemaAdapter

public DeserializationSchemaAdapter(org.apache.flink.api.common.serialization.DeserializationSchema<org.apache.flink.table.data.RowData> deserializationSchema)

方法详细资料

createReader

public org.apache.flink.connector.file.table.DeserializationSchemaAdapter.Reader createReader(org.apache.flink.configuration.Configuration config,
                                                                                              FileSourceSplit split)
                                                                                       throws IOException

从接口复制的说明: BulkFormat

Creates a new reader that reads from the split's path starting at the FileSourceSplit.offset() split's offset} and reads length bytes after the offset.

指定者:

createReader 在接口中 BulkFormat<org.apache.flink.table.data.RowData,FileSourceSplit>

抛出:

IOException

restoreReader

public org.apache.flink.connector.file.table.DeserializationSchemaAdapter.Reader restoreReader(org.apache.flink.configuration.Configuration config,
                                                                                               FileSourceSplit split)
                                                                                        throws IOException

从接口复制的说明: BulkFormat

Creates a new reader that reads from split.path() starting at offset and reads until length bytes after the offset. A number of recordsToSkip records should be read and discarded after the offset. This is typically part of restoring a reader to a checkpointed position.

指定者:

restoreReader 在接口中 BulkFormat<org.apache.flink.table.data.RowData,FileSourceSplit>

抛出:

IOException

isSplittable

public boolean isSplittable()

从接口复制的说明: BulkFormat

Checks whether this format is splittable. Splittable formats allow Flink to create multiple splits per file, so that Flink can read multiple regions of the file concurrently.

See top-level JavaDocs (section "Splitting") for details.

指定者:

isSplittable 在接口中 BulkFormat<org.apache.flink.table.data.RowData,FileSourceSplit>

getProducedType

public org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.table.data.RowData> getProducedType()

从接口复制的说明: BulkFormat

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<org.apache.flink.table.data.RowData>

指定者:

getProducedType 在接口中 BulkFormat<org.apache.flink.table.data.RowData,FileSourceSplit>