com.ibatis.db.sqlmap.cache.memory
Class MemoryCacheLevel
java.lang.Object
com.ibatis.db.sqlmap.cache.memory.MemoryCacheLevel
- public final class MemoryCacheLevel
- extends java.lang.Object
- Author:
- lmeadors
Constructor Summary |
private |
MemoryCacheLevel(java.lang.String type)
Creates a new instance of CacheLevel |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
cacheLevelMap
private static java.util.Map cacheLevelMap
WEAK
public static final MemoryCacheLevel WEAK
- Constant for weak caching
This cache model is probably the best choice in most cases. It will increase
performance for popular results, but it will absolutely release the memory to
be used in allocating other objects, assuming that the results are not currently
in use.
SOFT
public static final MemoryCacheLevel SOFT
- Constant for soft caching.
This cache model will reduce the likelihood of running out of memory in case the
results are not currently in use and the memory is needed for other objects.
However, this is not the most aggressive cache-model in that regard. Hence,
memory still might be allocated and unavailable for more important objects.
STRONG
public static final MemoryCacheLevel STRONG
- Constant for strong caching.
This cache model will guarantee that the results stay in memory until the cache
is explicitly flushed. This is ideal for results that are:
- very small
- absolutely static
- used very often
The advantage is that performance will be very good for this particular query.
The disadvantage is that if the memory used by these results is needed, then it
will not be released to make room for other objects (possibly more important
objects).
referenceType
private java.lang.String referenceType
MemoryCacheLevel
private MemoryCacheLevel(java.lang.String type)
- Creates a new instance of CacheLevel
getReferenceType
public java.lang.String getReferenceType()
getByReferenceType
public static MemoryCacheLevel getByReferenceType(java.lang.String refType)