ai.grakn.graql.internal.reasoner.cache

Class QueryCache<Q extends ReasonerQuery>

java.lang.Object

ai.grakn.graql.internal.reasoner.cache.Cache<Q,QueryAnswers>

ai.grakn.graql.internal.reasoner.cache.QueryCache<Q>

Type Parameters:

Q - the type of query that is being cached

public class QueryCache<Q extends ReasonerQuery>
extends Cache<Q,QueryAnswers>

Container class for storing performed query resolutions.

Author:

Kasper Piskorski

Field Summary

Fields inherited from class ai.grakn.graql.internal.reasoner.cache.Cache

cache, explanation

Constructor Summary

Constructors

Constructor and Description
QueryCache()
QueryCache(boolean explanation)

Method Summary

Modifier and Type	Method and Description
long	answerSize(Set<Q> queries)
LazyIterator<Answer>	getAnswerIterator(Q query)
QueryAnswers	getAnswers(Q query)
java.util.stream.Stream<Answer>	getAnswerStream(Q query)
QueryAnswers	record(Q query, QueryAnswers answers) record answer iterable for a specific query and retrieve the updated answers
java.util.stream.Stream<Answer>	record(Q query, java.util.stream.Stream<Answer> answerStream) record answer stream for a specific query and retrieve the updated stream
Answer	recordAnswer(Q query, Answer answer)
LazyIterator<Answer>	recordRetrieveLazy(Q query, java.util.stream.Stream<Answer> answers) record answer stream for a specific query and retrieve the updated stream in a lazy iterator
void	remove(Cache<Q,QueryAnswers> c2, Set<Q> queries) cache subtraction of specified queries

Methods inherited from class ai.grakn.graql.internal.reasoner.cache.Cache

add, clear, contains, getInverseAnswerMap, getInverseAnswerMap, getQueries, remove

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryCache

public QueryCache()

QueryCache

public QueryCache(boolean explanation)

Method Detail

record

public QueryAnswers record(Q query,
                           QueryAnswers answers)

Description copied from class: Cache

record answer iterable for a specific query and retrieve the updated answers

Specified by:

record in class Cache<Q extends ReasonerQuery,QueryAnswers>

Parameters:

query - to be recorded

answers - to this query

Returns:

updated answer iterable

record

public java.util.stream.Stream<Answer> record(Q query,
                                              java.util.stream.Stream<Answer> answerStream)

Description copied from class: Cache

record answer stream for a specific query and retrieve the updated stream

Specified by:

record in class Cache<Q extends ReasonerQuery,QueryAnswers>

Parameters:

query - to be recorded

answerStream - answer stream of the query

Returns:

updated answer stream

recordAnswer

public Answer recordAnswer(Q query,
                           Answer answer)

recordRetrieveLazy

public LazyIterator<Answer> recordRetrieveLazy(Q query,
                                               java.util.stream.Stream<Answer> answers)

Description copied from class: Cache

record answer stream for a specific query and retrieve the updated stream in a lazy iterator

Specified by:

recordRetrieveLazy in class Cache<Q extends ReasonerQuery,QueryAnswers>

Parameters:

query - to be recorded

answers - answer stream of the query

Returns:

lazy iterator of updated answers

getAnswers

public QueryAnswers getAnswers(Q query)

Specified by:

getAnswers in class Cache<Q extends ReasonerQuery,QueryAnswers>

getAnswerStream

public java.util.stream.Stream<Answer> getAnswerStream(Q query)

Specified by:

getAnswerStream in class Cache<Q extends ReasonerQuery,QueryAnswers>

getAnswerIterator

public LazyIterator<Answer> getAnswerIterator(Q query)

Specified by:

getAnswerIterator in class Cache<Q extends ReasonerQuery,QueryAnswers>

remove

public void remove(Cache<Q,QueryAnswers> c2,
                   Set<Q> queries)

Description copied from class: Cache

cache subtraction of specified queries

Specified by:

remove in class Cache<Q extends ReasonerQuery,QueryAnswers>

Parameters:

c2 - subtraction right operand

queries - to which answers shall be subtracted

answerSize

public long answerSize(Set<Q> queries)

Specified by:

answerSize in class Cache<Q extends ReasonerQuery,QueryAnswers>