org.jsimpledb.kv.spanner

Class ReadOnlySpannerView

java.lang.Object

org.jsimpledb.kv.AbstractKVStore

org.jsimpledb.kv.spanner.ReadOnlySpannerView

All Implemented Interfaces:

Closeable, AutoCloseable, CloseableKVStore, KVStore

public class ReadOnlySpannerView
extends AbstractKVStore
implements CloseableKVStore

Provides a (read-only) KVStore view of a ReadContext.

For best performance, consider wrapping an instance of this class in a BatchingKVStore.

See Also:

ReadWriteSpannerView

Field Summary

Fields

Modifier and Type	Field and Description
protected ReadContext	context
protected Function<? super SpannerException,RuntimeException>	exceptionMapper
protected Logger	log
protected String	tableName

Constructor Summary

Constructors

Constructor and Description
ReadOnlySpannerView(String tableName, ReadContext context) Convenience constructor.
ReadOnlySpannerView(String tableName, ReadContext context, Function<? super SpannerException,RuntimeException> exceptionMapper) Primary constructor.

Method Summary

Modifier and Type	Method and Description
void	close() Closes the associated ReadContext.
byte[]	get(byte[] key)
KVPair	getAtLeast(byte[] minKey, byte[] maxKey)
KVPair	getAtMost(byte[] maxKey, byte[] minKey)
CloseableIterator<KVPair>	getRange(byte[] minKey, byte[] maxKey, boolean reverse)
protected static KVPair	kv(Struct struct)
void	put(byte[] key, byte[] value)
void	remove(byte[] key)
void	removeRange(byte[] minKey, byte[] maxKey)

Methods inherited from class org.jsimpledb.kv.AbstractKVStore

adjustCounter, decodeCounter, encodeCounter

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jsimpledb.kv.KVStore

adjustCounter, decodeCounter, encodeCounter, getRange, getRange

Field Detail

log

protected final Logger log

tableName

protected final String tableName

context

protected final ReadContext context

exceptionMapper

protected final Function<? super SpannerException,RuntimeException> exceptionMapper

Constructor Detail

ReadOnlySpannerView

public ReadOnlySpannerView(String tableName,
                           ReadContext context,
                           Function<? super SpannerException,RuntimeException> exceptionMapper)

Primary constructor.

Parameters:

tableName - name of the Spanner database table

context - read context

exceptionMapper - mapper for any thrown SpannerExceptions, or null for none

Throws:

IllegalArgumentException - if tableName or context is null

ReadOnlySpannerView

public ReadOnlySpannerView(String tableName,
                           ReadContext context)

Convenience constructor.

Equivalent to ReadOnlySpannerView(tableName, context, null).

Parameters:

tableName - name of the Spanner database table

context - read context

Throws:

IllegalArgumentException - if tableName or context is null

Method Detail

get

public byte[] get(byte[] key)

Specified by:

get in interface KVStore

Overrides:

get in class AbstractKVStore

getAtLeast

public KVPair getAtLeast(byte[] minKey,
                         byte[] maxKey)

Specified by:

getAtLeast in interface KVStore

Overrides:

getAtLeast in class AbstractKVStore

getAtMost

public KVPair getAtMost(byte[] maxKey,
                        byte[] minKey)

Specified by:

getAtMost in interface KVStore

Overrides:

getAtMost in class AbstractKVStore

getRange

public CloseableIterator<KVPair> getRange(byte[] minKey,
                                          byte[] maxKey,
                                          boolean reverse)

Specified by:

getRange in interface KVStore

put

public void put(byte[] key,
                byte[] value)

Specified by:

put in interface KVStore

Overrides:

put in class AbstractKVStore

remove

public void remove(byte[] key)

Specified by:

remove in interface KVStore

Overrides:

remove in class AbstractKVStore

removeRange

public void removeRange(byte[] minKey,
                        byte[] maxKey)

Specified by:

removeRange in interface KVStore

Overrides:

removeRange in class AbstractKVStore

close

public void close()

Closes the associated ReadContext.

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in interface CloseableKVStore

kv

protected static KVPair kv(Struct struct)