Package org.apache.hadoop.mapred.join

Class Parser.Node

java.lang.Object

org.apache.hadoop.mapred.join.Parser.Node

All Implemented Interfaces:

InputFormat, ComposableInputFormat

Enclosing class:

Parser

@Public
@Evolving
public abstract static class Parser.Node
extends Object
implements ComposableInputFormat

Field Summary

Fields

Modifier and Type	Field	Description
protected Class<? extends WritableComparator>	cmpcl
protected int	id
protected String	ident
protected static final Map<String,Constructor<? extends ComposableRecordReader>>	rrCstrMap

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Node(String ident)

Method Summary

Modifier and Type	Method	Description
protected static void	addIdentifier(String ident, Class<?>[] mcstrSig, Class<? extends Parser.Node> nodetype, Class<? extends ComposableRecordReader> cl)	For a given identifier, add a mapping to the nodetype for the parse tree and to the ComposableRecordReader to be created, including the formals required to invoke the constructor.
protected void	setID(int id)
protected void	setKeyComparator(Class<? extends WritableComparator> cmpcl)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.mapred.join.ComposableInputFormat

getRecordReader

Methods inherited from interface org.apache.hadoop.mapred.InputFormat

getSplits

Field Details

rrCstrMap

protected static final Map<String,Constructor<? extends ComposableRecordReader>> rrCstrMap

id

protected int id

ident

protected String ident

cmpcl

protected Class<? extends WritableComparator> cmpcl

Constructor Details

Node

protected Node(String ident)

Method Details

addIdentifier

protected static void addIdentifier(String ident,
 Class<?>[] mcstrSig,
 Class<? extends Parser.Node> nodetype,
 Class<? extends ComposableRecordReader> cl)
                             throws NoSuchMethodException

For a given identifier, add a mapping to the nodetype for the parse tree and to the ComposableRecordReader to be created, including the formals required to invoke the constructor. The nodetype and constructor signature should be filled in from the child node.

Throws:

NoSuchMethodException

setID

protected void setID(int id)

setKeyComparator

protected void setKeyComparator(Class<? extends WritableComparator> cmpcl)