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OPENJPA-1334: Emulate 1.2 versions IncludedTypes/ExcludedTypes functionality via new distribution policy mechanics 

git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@909054 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Pinaki Poddar 2010-02-11 16:18:46 +00:00
parent f028f744c2
commit fb004027ad
1 changed files with 13 additions and 29 deletions
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42
openjpa-kernel/src/main/java/org/apache/openjpa/datacache/TypeBasedCacheDistributionPolicy.java
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@ -35,8 +35,8 @@ import serp.util.Strings;
* <br>
* The policy checks for the given instance by its type whether the class name appears in
* exclusion or inclusion lists. If the class name appears in exclusion list then the
* instance is not cached. Otherwise If the class name appears in inclusion list but not in
* exclusion list, then the instance is cached.
* instance is not cached. Otherwise, if an inclusion list exists and the class name appears in inclusion list
* or @DataCache annotation is specified on the class meta data, then the instance is cached.
*
* @author Pinaki Poddar
*
@ -85,36 +85,20 @@ public class TypeBasedCacheDistributionPolicy extends DefaultCacheDistributionPo
return Collections.unmodifiableSet(set);
}
/**
* Is the given type cacheable by excludeTypes/includeTypes plug-in properties.
*
* @param meta the given type
* @return TRUE or FALSE if the type has appeared in the plug-in property.
* null otherwise.
*/
private Boolean isCacheableByPlugin(ClassMetaData meta) {
String className = meta.getDescribedType().getName();
if (_excludedTypes != null && _excludedTypes.contains(className)) {
return Boolean.FALSE;
}
if (_includedTypes != null && _includedTypes.contains(className)) {
return Boolean.TRUE;
}
return null;
}
@Override
public String selectCache(OpenJPAStateManager sm, Object context) {
Boolean result = isCacheableByPlugin(sm.getMetaData());
if (result == null) { // this policy does not know, ask the super class
return super.selectCache(sm, context);
} else if (Boolean.FALSE.equals(result)) { // must be excluded
ClassMetaData meta = sm.getMetaData();
String className = meta.getDescribedType().getName();
if (_excludedTypes != null && _excludedTypes.contains(className)) {
return null;
}
String name = sm.getMetaData().getDataCacheName();
return name == null ? DataCache.NAME_DEFAULT : name;
if (_includedTypes != null && !_includedTypes.isEmpty()) {
if (_includedTypes.contains(className))
return meta.getDataCacheName();
return (meta.getDataCacheEnabled()) ? meta.getDataCacheName() : null;
} else {
return super.selectCache(sm, context);
}
}
}