Package com.apple.foundationdb.record.provider.foundationdb.layers.interning

Class StringInterningLayer

java.lang.Object

com.apple.foundationdb.record.provider.foundationdb.layers.interning.StringInterningLayer

@API(INTERNAL)
public class StringInterningLayer
extends Object

A persistent bidirectional unique mapping between strings and integers.

Constructor Summary

Constructors

Constructor	Description
StringInterningLayer(Subspace baseSubspace)
StringInterningLayer(Subspace baseSubspace, boolean isRootLevel)

Method Summary

Modifier and Type	Method	Description
protected CompletableFuture<ResolverResult>	create(FDBRecordContext context, String toIntern, byte[] metadata)
protected static ResolverResult	deserializeValue(byte[] bytes)
protected CompletableFuture<Boolean>	exists(FDBRecordContext context, String toRead)
protected Subspace	getMappingSubspace()
protected CompletableFuture<ResolverResult>	intern(FDBRecordContext context, String toIntern)
protected CompletableFuture<Optional<ResolverResult>>	read(FDBRecordContext context, String toRead)
protected CompletableFuture<Optional<String>>	readReverse(FDBRecordContext context, Long internedValue)
protected CompletableFuture<Void>	setMapping(FDBRecordContext context, String key, ResolverResult value)
protected CompletableFuture<Void>	setWindow(FDBRecordContext context, long count)
protected CompletableFuture<Void>	updateMetadata(FDBRecordContext context, String key, byte[] metadata)

Methods inherited from class java.lang.Object

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

Constructor Detail

StringInterningLayer

public StringInterningLayer(@Nonnull
                            Subspace baseSubspace)

StringInterningLayer

public StringInterningLayer(@Nonnull
                            Subspace baseSubspace,
                            boolean isRootLevel)

Method Detail

intern

protected CompletableFuture<ResolverResult> intern(@Nonnull
                                                   FDBRecordContext context,
                                                   @Nonnull
                                                   String toIntern)

exists

protected CompletableFuture<Boolean> exists(@Nonnull
                                            FDBRecordContext context,
                                            @Nonnull
                                            String toRead)

read

protected CompletableFuture<Optional<ResolverResult>> read(@Nonnull
                                                           FDBRecordContext context,
                                                           @Nonnull
                                                           String toRead)

readReverse

protected CompletableFuture<Optional<String>> readReverse(@Nonnull
                                                          FDBRecordContext context,
                                                          @Nonnull
                                                          Long internedValue)

create

protected CompletableFuture<ResolverResult> create(@Nonnull
                                                   FDBRecordContext context,
                                                   @Nonnull
                                                   String toIntern,
                                                   @Nullable
                                                   byte[] metadata)

updateMetadata

protected CompletableFuture<Void> updateMetadata(@Nonnull
                                                 FDBRecordContext context,
                                                 @Nonnull
                                                 String key,
                                                 @Nullable
                                                 byte[] metadata)

setMapping

protected CompletableFuture<Void> setMapping(@Nonnull
                                             FDBRecordContext context,
                                             @Nonnull
                                             String key,
                                             @Nonnull
                                             ResolverResult value)

setWindow

protected CompletableFuture<Void> setWindow(@Nonnull
                                            FDBRecordContext context,
                                            long count)

getMappingSubspace

protected Subspace getMappingSubspace()

deserializeValue

protected static ResolverResult deserializeValue(byte[] bytes)