org.neo4j.com.storecopy

Class ExternallyManagedPageCache

java.lang.Object

org.neo4j.com.storecopy.ExternallyManagedPageCache

All Implemented Interfaces:

AutoCloseable, org.neo4j.io.pagecache.PageCache

public class ExternallyManagedPageCache
extends Object
implements org.neo4j.io.pagecache.PageCache

A PageCache implementation that delegates to another page cache, whose life cycle is managed elsewhere. This page cache implementation DOES NOT delegate close() method calls, so it can be used to safely share a page cache with a component that might try to close the page cache it gets.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ExternallyManagedPageCache.GraphDatabaseFactoryWithPageCacheFactory

Method Summary

Modifier and Type	Method and Description
void	close()
void	flushAndForce()
void	flushAndForce(org.neo4j.io.pagecache.IOLimiter limiter)
Optional<org.neo4j.io.pagecache.PagedFile>	getExistingMapping(File file)
static ExternallyManagedPageCache.GraphDatabaseFactoryWithPageCacheFactory	graphDatabaseFactoryWithPageCache(org.neo4j.io.pagecache.PageCache delegatePageCache) Create a GraphDatabaseFactory that will build EmbeddedGraphDatabase instances that all use the given page cache.
org.neo4j.io.pagecache.PagedFile	map(File file, int pageSize, OpenOption... openOptions)
int	maxCachedPages()
int	pageSize()
Stream<org.neo4j.io.pagecache.FileHandle>	streamFilesRecursive(File directory)

Methods inherited from class java.lang.Object

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

Method Detail

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface org.neo4j.io.pagecache.PageCache

map

public org.neo4j.io.pagecache.PagedFile map(File file,
                                            int pageSize,
                                            OpenOption... openOptions)
                                     throws IOException

Specified by:

map in interface org.neo4j.io.pagecache.PageCache

Throws:

IOException

getExistingMapping

public Optional<org.neo4j.io.pagecache.PagedFile> getExistingMapping(File file)
                                                              throws IOException

Specified by:

getExistingMapping in interface org.neo4j.io.pagecache.PageCache

Throws:

IOException

flushAndForce

public void flushAndForce()
                   throws IOException

Specified by:

flushAndForce in interface org.neo4j.io.pagecache.PageCache

Throws:

IOException

flushAndForce

public void flushAndForce(org.neo4j.io.pagecache.IOLimiter limiter)
                   throws IOException

Specified by:

flushAndForce in interface org.neo4j.io.pagecache.PageCache

Throws:

IOException

pageSize

public int pageSize()

Specified by:

pageSize in interface org.neo4j.io.pagecache.PageCache

maxCachedPages

public int maxCachedPages()

Specified by:

maxCachedPages in interface org.neo4j.io.pagecache.PageCache

streamFilesRecursive

public Stream<org.neo4j.io.pagecache.FileHandle> streamFilesRecursive(File directory)
                                                               throws IOException

Specified by:

streamFilesRecursive in interface org.neo4j.io.pagecache.PageCache

Throws:

IOException

graphDatabaseFactoryWithPageCache

public static ExternallyManagedPageCache.GraphDatabaseFactoryWithPageCacheFactory graphDatabaseFactoryWithPageCache(org.neo4j.io.pagecache.PageCache delegatePageCache)

Create a GraphDatabaseFactory that will build EmbeddedGraphDatabase instances that all use the given page cache.