Package graphql.execution.preparsed.persisted

Class InMemoryPersistedQueryCache

java.lang.Object

graphql.execution.preparsed.persisted.InMemoryPersistedQueryCache

All Implemented Interfaces:

PersistedQueryCache

@PublicApi
public class InMemoryPersistedQueryCache
extends Object
implements PersistedQueryCache

A PersistedQueryCache that is just an in memory map of known queries.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	InMemoryPersistedQueryCache.Builder

Field Summary

Fields

Modifier and Type	Field	Description
private final Map<Object,PreparsedDocumentEntry>	cache
private final Map<Object,String>	knownQueries

Constructor Summary

Constructors

Constructor	Description
InMemoryPersistedQueryCache(Map<Object,String> knownQueries)

Method Summary

Modifier and Type	Method	Description
Map<Object,String>	getKnownQueries()
PreparsedDocumentEntry	getPersistedQueryDocument(Object persistedQueryId, ExecutionInput executionInput, PersistedQueryCacheMiss onCacheMiss)	This is called to get a persisted query from cache.
static InMemoryPersistedQueryCache.Builder	newInMemoryPersistedQueryCache()

Methods inherited from class java.lang.Object

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

Methods inherited from interface graphql.execution.preparsed.persisted.PersistedQueryCache

getPersistedQueryDocumentAsync

Field Details

cache

private final Map<Object,PreparsedDocumentEntry> cache

knownQueries

private final Map<Object,String> knownQueries

Constructor Details

InMemoryPersistedQueryCache

public InMemoryPersistedQueryCache(Map<Object,String> knownQueries)

Method Details

getKnownQueries

public Map<Object,String> getKnownQueries()

getPersistedQueryDocument

public PreparsedDocumentEntry getPersistedQueryDocument(Object persistedQueryId,
 ExecutionInput executionInput,
 PersistedQueryCacheMiss onCacheMiss)
                                                 throws PersistedQueryNotFound

Description copied from interface: PersistedQueryCache

This is called to get a persisted query from cache.

If its present in cache then it must return a PreparsedDocumentEntry where PreparsedDocumentEntry.getDocument() is already parsed and validated. This will be passed onto the graphql engine as is.

If it's a valid query id but its no present in cache, (cache miss) then you need to call back the "onCacheMiss" function with associated query text. This will be compiled and validated by the graphql engine and the PreparsedDocumentEntry will be passed back ready for you to cache it.

If it's not a valid query id then throw a PersistedQueryNotFound to indicate this.

Specified by:

getPersistedQueryDocument in interface PersistedQueryCache

Parameters:

persistedQueryId - the persisted query id

executionInput - the original execution input

onCacheMiss - the call back should it be a valid query id but it's not currently in the cache

Returns:

a parsed and validated PreparsedDocumentEntry where PreparsedDocumentEntry.getDocument() is set

Throws:

PersistedQueryNotFound - if the query id is not know at all and you have no query text

newInMemoryPersistedQueryCache

public static InMemoryPersistedQueryCache.Builder newInMemoryPersistedQueryCache()