private static Cache<String, CacheObject> buildCache(
/*int reloadAfterAccess, */ int reloadAfterWrite) {
CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder().softValues();
// if(reloadAfterAccess > 0)
// builder.expireAfterAccess(reloadAfterAccess, TimeUnit.SECONDS);
if (reloadAfterWrite > 0) builder.expireAfterWrite(reloadAfterWrite, TimeUnit.SECONDS);
return builder.build();
}
public void testTimeToLive_negative() {
CacheBuilder<Object, Object> builder = new CacheBuilder<Object, Object>();
try {
builder.expireAfterWrite(-1, SECONDS);
fail();
} catch (IllegalArgumentException expected) {
}
}
public void testTimeToLive_setTwice() {
CacheBuilder<Object, Object> builder =
new CacheBuilder<Object, Object>().expireAfterWrite(3600, SECONDS);
try {
// even to the same value is not allowed
builder.expireAfterWrite(3600, SECONDS);
fail();
} catch (IllegalStateException expected) {
}
}
<K, V> void configureCacheBuilder(
CompleteConfiguration<K, V> completeConfiguration,
CacheBuilder<Object, Object> cacheBuilder) {
ExpiryPolicy expiryPolicy = completeConfiguration.getExpiryPolicyFactory().create();
Duration expiryForAccess = expiryPolicy.getExpiryForAccess();
if (expiryForAccess != null && !expiryForAccess.isEternal()) {
cacheBuilder.expireAfterAccess(
expiryForAccess.getDurationAmount(), expiryForAccess.getTimeUnit());
}
Duration expiryForUpdate = expiryPolicy.getExpiryForUpdate();
if (expiryForUpdate != null && !expiryForUpdate.isEternal()) {
cacheBuilder.expireAfterWrite(
expiryForUpdate.getDurationAmount(), expiryForUpdate.getTimeUnit());
}
}
public com.google.common.cache.CacheBuilder<Object, Object> expireAfterWrite(
long duration, TimeUnit unit) {
return builder.expireAfterWrite(duration, unit);
}
@Override
public void applyExpiration(final CacheBuilder<?, ?> builder, final Period period) {
builder.expireAfterWrite(period.duration, period.durationUnit);
}