ai.grakn.engine.cache

Class EngineCacheStandAlone

java.lang.Object

ai.grakn.engine.cache.EngineCacheStandAlone

All Implemented Interfaces:

ConceptCache

public class EngineCacheStandAlone
extends Object

Engine's internal Concept ID cache

This is a cache which houses Vertex ids. It keeps these ids so that we can lookup the vertices in need of postprocessing directly. We cannot relay on ConceptIds because the indexed lookup maybe faulty with vertices in need of post processing. This stand alone version keeps everything in memory when running a single engine.

Author:

fppt

Method Summary

Modifier and Type	Method and Description
void	addJobCasting(String keyspace, String castingIndex, ConceptId castingId)
void	addJobInstanceCount(String keyspace, TypeLabel name, long instanceCount)
void	addJobResource(String keyspace, String resourceIndex, ConceptId resourceId)
void	clearAllJobs(String keyspace) Removes all jobs from the keyspace
void	clearJobSetCastings(String keyspace, String conceptIndex) Deletes the job set only if there are no pending jobs
void	clearJobSetResources(String keyspace, String conceptIndex) Deletes the job set only if there are no pending jobs
void	deleteJobCasting(String keyspace, String castingIndex, ConceptId castingId)
void	deleteJobInstanceCount(String keyspace, TypeLabel name)
void	deleteJobResource(String keyspace, String resourceIndex, ConceptId resourceId)
static EngineCacheStandAlone	getCache()
Map<String,Set<ConceptId>>	getCastingJobs(String keyspace)
Map<TypeLabel,Long>	getInstanceCountJobs(String keyspace)
Set<String>	getKeyspaces()
long	getLastTimeJobAdded()
long	getNumCastingJobs(String keyspace)
long	getNumJobs(String keyspace)
long	getNumResourceJobs(String keyspace)
Map<String,Set<ConceptId>>	getResourceJobs(String keyspace)

Methods inherited from class java.lang.Object

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

Method Detail

getCache

public static EngineCacheStandAlone getCache()

getKeyspaces

public Set<String> getKeyspaces()

Returns:

All the keyspaces with jobs currently pending on them

getLastTimeJobAdded

public long getLastTimeJobAdded()

Returns:

The timestamp of the last time a job was added

getCastingJobs

public Map<String,Set<ConceptId>> getCastingJobs(String keyspace)

Parameters:

keyspace - The keyspace of a specific graph.

Returns:

The unique index and set of concept ids which should be merged into that index

addJobCasting

public void addJobCasting(String keyspace,
                          String castingIndex,
                          ConceptId castingId)

Parameters:

keyspace - The keyspace of the concepts

castingIndex - The unique index value which should be enforced.

castingId - The casting ID which needs post processing

deleteJobCasting

public void deleteJobCasting(String keyspace,
                             String castingIndex,
                             ConceptId castingId)

Parameters:

keyspace - The keyspace of the concepts

castingIndex - The unique index value which should be enforced.

castingId - The casting Id which no longer needs post processing.

getResourceJobs

public Map<String,Set<ConceptId>> getResourceJobs(String keyspace)

Parameters:

keyspace - The keyspace of a specific graph.

Returns:

The unique index and set of concept ids which should be merged into that index

addJobResource

public void addJobResource(String keyspace,
                           String resourceIndex,
                           ConceptId resourceId)

Parameters:

keyspace - The keyspace of the concepts

resourceIndex - The unique index value which should be enforced.

resourceId - The resource Id which needs post processing

deleteJobResource

public void deleteJobResource(String keyspace,
                              String resourceIndex,
                              ConceptId resourceId)

Parameters:

keyspace - The keyspace of the concepts

resourceIndex - The unique index value which should be enforced.

resourceId - The resourceId which no longer needs post prcoessing

clearJobSetResources

public void clearJobSetResources(String keyspace,
                                 String conceptIndex)

Description copied from interface: ConceptCache

Deletes the job set only if there are no pending jobs

Parameters:

keyspace - The keyspace of the concepts

conceptIndex - The unique index value which has been enforced.

clearJobSetCastings

public void clearJobSetCastings(String keyspace,
                                String conceptIndex)

Description copied from interface: ConceptCache

Deletes the job set only if there are no pending jobs

Parameters:

keyspace - The keyspace of the concepts

conceptIndex - The unique index value has been enforced.

clearAllJobs

public void clearAllJobs(String keyspace)

Description copied from interface: ConceptCache

Removes all jobs from the keyspace

Parameters:

keyspace - The keyspace to purge of all jobs

getInstanceCountJobs

public Map<TypeLabel,Long> getInstanceCountJobs(String keyspace)

Parameters:

keyspace - The keyspace of a specific graph.

Returns:

The types and the number of instances that have been removed or added to the type

addJobInstanceCount

public void addJobInstanceCount(String keyspace,
                                TypeLabel name,
                                long instanceCount)

Parameters:

keyspace - The keyspace of the concepts

name - The name of the type with new or removed instances

instanceCount - The number of new or removed instances

deleteJobInstanceCount

public void deleteJobInstanceCount(String keyspace,
                                   TypeLabel name)

Parameters:

keyspace - The keyspace of the concepts

name - The name of the type with new or removed instances

getNumJobs

public long getNumJobs(String keyspace)

Specified by:

getNumJobs in interface ConceptCache

Parameters:

keyspace - The keyspace of a specific graph.

Returns:

The number of jobs pending to be performed on that graph

getNumCastingJobs

public long getNumCastingJobs(String keyspace)

Specified by:

getNumCastingJobs in interface ConceptCache

Parameters:

keyspace - The keyspace of a specific graph.

Returns:

The number of casting jobs pending to be performed on that graph

getNumResourceJobs

public long getNumResourceJobs(String keyspace)

Specified by:

getNumResourceJobs in interface ConceptCache

Parameters:

keyspace - The keyspace of a specific graph.

Returns:

The number of resource jobs pending to be performed on that graph