NoDeleteConstraint (Apache Accumulo Core 3.0.0 API)

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

All Methods Instance Methods Concrete Methods
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 Detail
  - NoDeleteConstraint
```
public NoDeleteConstraint()
```
- Method Detail
  - 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