Package org.apache.hadoop.yarn.util.constraint

Class PlacementConstraintParser.SourceTagsTokenizer

java.lang.Object

org.apache.hadoop.yarn.util.constraint.PlacementConstraintParser.SourceTagsTokenizer

All Implemented Interfaces:

Enumeration<String>, PlacementConstraintParser.ConstraintTokenizer

Enclosing class:

PlacementConstraintParser

public static class PlacementConstraintParser.SourceTagsTokenizer
extends Object
implements PlacementConstraintParser.ConstraintTokenizer

Tokenizer used to parse allocation tags expression, which should be in tag(numOfAllocations) syntax.

Constructor Summary

Constructors

Constructor	Description
SourceTagsTokenizer(String expr)

Method Summary

Modifier and Type	Method	Description
boolean	hasMoreElements()
String	nextElement()
void	validate()	Validate the schema before actual parsing the expression.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Enumeration

asIterator

Constructor Details

SourceTagsTokenizer

public SourceTagsTokenizer(String expr)

Method Details

validate

public void validate()
              throws PlacementConstraintParseException

Description copied from interface: PlacementConstraintParser.ConstraintTokenizer

Validate the schema before actual parsing the expression.

Specified by:

validate in interface PlacementConstraintParser.ConstraintTokenizer

Throws:

PlacementConstraintParseException - when the placement constraint parser fails to parse an expression.

hasMoreElements

public boolean hasMoreElements()

Specified by:

hasMoreElements in interface Enumeration<String>

nextElement

public String nextElement()

Specified by:

nextElement in interface Enumeration<String>