Package com.tangosol.net.cache

Class CacheLoaderCacheStore<K,V>

java.lang.Object

com.tangosol.util.Base

com.tangosol.net.cache.AbstractCacheLoader<K,V>

com.tangosol.net.cache.AbstractCacheStore<K,V>

com.tangosol.net.cache.CacheLoaderCacheStore<K,V>

All Implemented Interfaces:

CacheLoader<K,V>, CacheStore<K,V>

Direct Known Subclasses:

CacheLoaderCacheStore.Iterable

public class CacheLoaderCacheStore<K,V>
extends AbstractCacheStore<K,V>

A read-only CacheStore that wraps a CacheLoader.

Since:

Coherence 3.2

Author:

cp 2006.09.06

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CacheLoaderCacheStore.Iterable<K,V>	An extension to the CacheLoaderCacheStore that implements the IterableCacheLoader interface.

Nested classes/interfaces inherited from class com.tangosol.util.Base

Base.LoggingWriter

Field Summary

Fields

Modifier and Type	Field	Description
protected CacheLoader<K,V>	m_loader	The CacheLoader to delegate to.

Fields inherited from class com.tangosol.util.Base

LOG_ALWAYS, LOG_CONFIG, LOG_DEBUG, LOG_ERR, LOG_INFO, LOG_MAX, LOG_MIN, LOG_QUIET, LOG_WARN, POWER_0, POWER_G, POWER_K, POWER_M, POWER_T, UNIT_D, UNIT_H, UNIT_M, UNIT_MS, UNIT_NS, UNIT_S, UNIT_US

Constructor Summary

Constructors

Constructor	Description
CacheLoaderCacheStore(CacheLoader<K,V> loader)	The CacheLoader to delegate to.

Method Summary

Modifier and Type	Method	Description
V	load(K key)	Return the value associated with the specified key, or null if the key does not have an associated value in the underlying store.
Map<K,V>	loadAll(Collection<? extends K> colKeys)	Return the values associated with each the specified keys in the passed collection.
static <K,V> CacheStore<K,V>	wrapCacheLoader(CacheLoader<K,V> loader)	Create a CacheStore wrapper for the passed CacheLoader.

Methods inherited from class com.tangosol.net.cache.AbstractCacheStore

erase, store

Methods inherited from class com.tangosol.util.Base

azzert, azzert, azzert, azzertFailed, breakLines, breakLines, capitalize, checkNotEmpty, checkNotNull, checkRange, computeSafeWaitTime, decimalValue, dup, dup, ensureBigDecimal, ensureClassLoader, ensureRuntimeException, ensureRuntimeException, equals, equalsDeep, err, err, err, err, err, escape, formatDateTime, getCallerStackFrame, getCommonMonitor, getCommonMonitor, getCommonMonitor, getContextClassLoader, getContextClassLoader, getDeepMessage, getErr, getLastSafeTimeMillis, getLog, getMaxDecDigits, getMaxHexDigits, getOriginalException, getOut, getProcessRandom, getRandom, getRandomBinary, getRandomBinary, getRandomString, getSafeTimeMillis, getStackFrame, getStackFrames, getStackTrace, getStackTrace, getStackTrace, getThreadFactory, getTimeZone, getUpTimeMillis, hashCode, hexValue, indentString, indentString, isDecimal, isHex, isLogEcho, isOctal, log, log, log, log, log, makeInteger, makeLong, makeThread, mergeArray, mergeBooleanArray, mergeByteArray, mergeCharArray, mergeDoubleArray, mergeFloatArray, mergeIntArray, mergeLongArray, mod, mod, octalValue, out, out, out, out, out, pad, parseBandwidth, parseBandwidth, parseDelimitedString, parseHex, parseHex, parseMemorySize, parseMemorySize, parsePercentage, parseTime, parseTime, parseTimeNanos, parseTimeNanos, printStackTrace, randomize, randomize, randomize, randomize, read, read, read, read, read, read, read, replace, setErr, setLog, setLogEcho, setOut, sleep, toBandwidthString, toBandwidthString, toCharEscape, toCrc, toCrc, toCrc, toCrc, toCrc, toDecString, toDelimitedString, toDelimitedString, toDelimitedString, toDelimitedString, toHex, toHex, toHexDump, toHexEscape, toHexEscape, toHexEscape, toHexEscape, toHexString, toMemorySizeString, toMemorySizeString, toQuotedCharEscape, toQuotedStringEscape, toSqlString, toString, toString, toStringEscape, toUnicodeEscape, trace, trace, trace, trace, trace, trace, trace, trace, trace, truncateString, truncateString, wait

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.tangosol.net.cache.CacheStore

eraseAll, storeAll

Field Detail

m_loader

protected CacheLoader<K,V> m_loader

The CacheLoader to delegate to.

Constructor Detail

CacheLoaderCacheStore

public CacheLoaderCacheStore(CacheLoader<K,V> loader)

The CacheLoader to delegate to.

Parameters:

loader - the delegate CacheLoader

Method Detail

wrapCacheLoader

public static <K,V> CacheStore<K,V> wrapCacheLoader(CacheLoader<K,V> loader)

Create a CacheStore wrapper for the passed CacheLoader. Note that the returned CacheStore will implement the IterableCacheLoader interface if and only if the passed CacheLoader implements it.

Type Parameters:

K - the key type

V - the value type

Parameters:

loader - the CacheLoader to wrap

Returns:

a CacheStore

load

public V load(K key)

Return the value associated with the specified key, or null if the key does not have an associated value in the underlying store.

Specified by:

load in interface CacheLoader<K,V>

Specified by:

load in class AbstractCacheLoader<K,V>

Parameters:

key - key whose associated value is to be returned

Returns:

the value associated with the specified key, or null if no value is available for that key

loadAll

public Map<K,V> loadAll(Collection<? extends K> colKeys)

Return the values associated with each the specified keys in the passed collection. If a key does not have an associated value in the underlying store, then the return map will not have an entry for that key.

The default implementation of this method calls CacheLoader.load(K) for each key in the supplied Collection. Implementations that can optimize multi-key operations should override this default implementation.

Parameters:

colKeys - a collection of keys to load

Returns:

a Map of keys to associated values for the specified keys