org.apache.lens.lib.query

Class FileSerdeFormatter

java.lang.Object

org.apache.lens.lib.query.AbstractOutputFormatter

org.apache.lens.lib.query.WrappedFileFormatter

org.apache.lens.lib.query.FileSerdeFormatter

All Implemented Interfaces:

Externalizable, Serializable, InMemoryOutputFormatter, QueryOutputFormatter

public class FileSerdeFormatter
extends WrappedFileFormatter
implements InMemoryOutputFormatter

File format which provides implementation for InMemoryOutputFormatter

This is a wrapped formatter, which serializes the rows of the result with configured serde. It would only accept the Serde's whose serialization class is Text

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.lens.lib.query.AbstractOutputFormatter

HEADER_TYPE

Constructor Summary

Constructors

Constructor and Description
FileSerdeFormatter() Instantiates a new file serde formatter.

Method Summary

Methods

Modifier and Type	Method and Description
void	init(QueryContext ctx, LensResultSetMetadata metadata) Initialize the formatter.
void	writeRow(ResultRow row) Write a row of the result.

Methods inherited from class org.apache.lens.lib.query.WrappedFileFormatter

close, commit, getEncoding, getFileSize, getFinalOutputPath, getNumRows, getTmpPath, readExternal, writeExternal, writeFooter, writeHeader

Methods inherited from class org.apache.lens.lib.query.AbstractOutputFormatter

getMetadata

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.lens.server.api.query.QueryOutputFormatter

close, commit, getFileSize, getFinalOutputPath, getMetadata, getNumRows, writeFooter, writeHeader

Methods inherited from interface java.io.Externalizable

readExternal, writeExternal

Constructor Detail

FileSerdeFormatter

public FileSerdeFormatter()

Instantiates a new file serde formatter.

Method Detail

init

public void init(QueryContext ctx,
        LensResultSetMetadata metadata)
          throws IOException

Description copied from interface: QueryOutputFormatter

Initialize the formatter.

Specified by:

init in interface QueryOutputFormatter

Overrides:

init in class WrappedFileFormatter

Parameters:

ctx - The QueryContext object

metadata - LensResultSetMetadata object

Throws:

IOException - Signals that an I/O exception has occurred.

writeRow

public void writeRow(ResultRow row)
              throws IOException

Description copied from interface: InMemoryOutputFormatter

Write a row of the result.

Specified by:

writeRow in interface InMemoryOutputFormatter

Parameters:

row - ResultRow object

Throws:

IOException - Signals that an I/O exception has occurred.