org.apache.hadoop.mapred.join

类 Parser.Node

java.lang.Object

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

所有已实现的接口:

InputFormat, ComposableInputFormat

封闭类:

Parser

public abstract static class Parser.Node
extends Object
implements ComposableInputFormat

字段概要

字段

限定符和类型	字段和说明
protected Class<? extends WritableComparator>	cmpcl
protected int	id
protected String	ident
protected static Map<String,Constructor<? extends ComposableRecordReader>>	rrCstrMap

构造器概要

构造器

限定符	构造器和说明
protected	Parser.Node(String ident)

方法概要

方法

限定符和类型	方法和说明
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)

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.hadoop.mapred.join.ComposableInputFormat

getRecordReader

从接口继承的方法 org.apache.hadoop.mapred.InputFormat

getSplits

字段详细资料

rrCstrMap

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

id

protected int id

ident

protected String ident

cmpcl

protected Class<? extends WritableComparator> cmpcl

构造器详细资料

Parser.Node

protected Parser.Node(String ident)

方法详细资料

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.

抛出:

NoSuchMethodException

setID

protected void setID(int id)

setKeyComparator

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