org.kitesdk.morphline.hadoop.rcfile

Class ReadRCFileBuilder

java.lang.Object

org.kitesdk.morphline.hadoop.rcfile.ReadRCFileBuilder

All Implemented Interfaces:

CommandBuilder

public final class ReadRCFileBuilder
extends Object
implements CommandBuilder

Command for reading Record Columnar (RC) Files. RCFile can be read in two ways 1. Row Wise - Emits one record for every row in the RCFile, with columns mapped with names as provided in the column map 2. Column Wise - For every row split (block) in the RC File, Emits one record for each column with all the row values for that column as a List For a RCFile with n rows and m columns. Row wise would emit n records and Column wise would emit m * (row splits) records. De-Compression is handled automatically

Field Summary

Fields

Modifier and Type	Field and Description
static String	OUTPUT_MEDIA_TYPE
static String	RC_FILE_META_DATA

Constructor Summary

Constructors

Constructor and Description
ReadRCFileBuilder()

Method Summary

Methods

Modifier and Type	Method and Description
Command	build(com.typesafe.config.Config config, Command parent, Command child, MorphlineContext context)
Collection<String>	getNames()

Methods inherited from class java.lang.Object

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

Field Detail

OUTPUT_MEDIA_TYPE

public static final String OUTPUT_MEDIA_TYPE

See Also:

Constant Field Values

RC_FILE_META_DATA

public static final String RC_FILE_META_DATA

See Also:

Constant Field Values

Constructor Detail

ReadRCFileBuilder

public ReadRCFileBuilder()

Method Detail

getNames

public Collection<String> getNames()

Specified by:

getNames in interface CommandBuilder

build

public Command build(com.typesafe.config.Config config,
            Command parent,
            Command child,
            MorphlineContext context)

Specified by:

build in interface CommandBuilder