Package org.apache.accumulo.core.data.constraints

Class NoDeleteConstraint

java.lang.Object

org.apache.accumulo.core.data.constraints.NoDeleteConstraint

All Implemented Interfaces:

Constraint

public class NoDeleteConstraint
extends Object
implements Constraint

This constraint ensures mutations do not have deletes.

Since:

2.1.0 moved from org.apache.accumulo.core.constraints package

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.accumulo.core.data.constraints.Constraint

Constraint.Environment

Constructor Summary

Constructors

Constructor	Description
NoDeleteConstraint()

Method Summary

Modifier and Type	Method	Description
List<Short>	check(Constraint.Environment env, Mutation mutation)	Checks a mutation for constraint violations.
String	getViolationDescription(short violationCode)	Gets a short, one-sentence description of what a given violation code means.

Methods inherited from class java.lang.Object

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

Constructor Details

NoDeleteConstraint

public NoDeleteConstraint()

Method Details

getViolationDescription

public String getViolationDescription(short violationCode)

Description copied from interface: Constraint

Gets a short, one-sentence description of what a given violation code means.

Specified by:

getViolationDescription in interface Constraint

Parameters:

violationCode - numeric violation code

Returns:

matching violation description

check

public List<Short> check(Constraint.Environment env,
 Mutation mutation)

Description copied from interface: Constraint

Checks a mutation for constraint violations. If the mutation contains no violations, returns null. Otherwise, returns a list of violation codes. Violation codes must be non-negative. Negative violation codes are reserved for system use.

Specified by:

check in interface Constraint

Parameters:

env - constraint environment

mutation - mutation to check

Returns:

list of violation codes, or null if none