org.apache.nifi.provenance

Class StandardQueryResult

java.lang.Object

org.apache.nifi.provenance.StandardQueryResult

All Implemented Interfaces:

ProgressiveResult, QueryResult

public class StandardQueryResult
extends Object
implements QueryResult, ProgressiveResult

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	StandardQueryResult.EventIdComparator

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	canceled
private Object	completionMonitor
private long	creationNanos
private String	error
private Date	expirationDate
private long	hitCount
private static org.slf4j.Logger	logger
private SortedSet<ProvenanceEventRecord>	matchingRecords
private int	numCompletedSteps
private int	numSteps
private Query	query
private long	queryTime
private Lock	readLock
private ReadWriteLock	rwLock
static int	TTL
private Lock	writeLock

Constructor Summary

Constructors

Constructor and Description
StandardQueryResult(Query query, int numSteps)

Method Summary

Modifier and Type	Method and Description
boolean	awaitCompletion(long time, TimeUnit unit)
(package private) void	cancel()
String	getError()
Date	getExpiration()
List<ProvenanceEventRecord>	getMatchingEvents()
int	getPercentComplete()
long	getQueryTime()
long	getTotalHitCount()
boolean	isFinished()
void	setError(String error)
void	update(Collection<ProvenanceEventRecord> newEvents, long totalHits)
private void	updateExpiration() Must be called with write lock!

Methods inherited from class java.lang.Object

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

Field Detail

logger

private static final org.slf4j.Logger logger

TTL

public static final int TTL

query

private final Query query

creationNanos

private final long creationNanos

numSteps

private final int numSteps

rwLock

private final ReadWriteLock rwLock

readLock

private final Lock readLock

writeLock

private final Lock writeLock

matchingRecords

private final SortedSet<ProvenanceEventRecord> matchingRecords

hitCount

private long hitCount

numCompletedSteps

private int numCompletedSteps

expirationDate

private Date expirationDate

error

private String error

queryTime

private long queryTime

completionMonitor

private final Object completionMonitor

canceled

private volatile boolean canceled

Constructor Detail

StandardQueryResult

public StandardQueryResult(Query query,
                           int numSteps)

Method Detail

getMatchingEvents

public List<ProvenanceEventRecord> getMatchingEvents()

Specified by:

getMatchingEvents in interface QueryResult

getTotalHitCount

public long getTotalHitCount()

Specified by:

getTotalHitCount in interface ProgressiveResult

Specified by:

getTotalHitCount in interface QueryResult

getQueryTime

public long getQueryTime()

Specified by:

getQueryTime in interface QueryResult

getExpiration

public Date getExpiration()

Specified by:

getExpiration in interface QueryResult

getError

public String getError()

Specified by:

getError in interface QueryResult

getPercentComplete

public int getPercentComplete()

Specified by:

getPercentComplete in interface QueryResult

isFinished

public boolean isFinished()

Specified by:

isFinished in interface ProgressiveResult

Specified by:

isFinished in interface QueryResult

cancel

void cancel()

setError

public void setError(String error)

Specified by:

setError in interface ProgressiveResult

update

public void update(Collection<ProvenanceEventRecord> newEvents,
                   long totalHits)

Specified by:

update in interface ProgressiveResult

awaitCompletion

public boolean awaitCompletion(long time,
                               TimeUnit unit)
                        throws InterruptedException

Specified by:

awaitCompletion in interface QueryResult

Throws:

InterruptedException

updateExpiration

private void updateExpiration()

Must be called with write lock!