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https://issues.apache.org/jira/browse/GEODE-3645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16271752#comment-16271752
]
ASF GitHub Bot commented on GEODE-3645:
---------------------------------------
pivotal-jbarrett commented on a change in pull request #159: GEODE-3645: Update
CacheFactory::create to return Cache by value
URL: https://github.com/apache/geode-native/pull/159#discussion_r153944245
##########
File path: cppcache/src/CacheFactory.cpp
##########
@@ -87,76 +73,83 @@ CacheFactory::CacheFactory(const
std::shared_ptr<Properties> dsProps) {
pdxReadSerialized = false;
this->dsProp = dsProps;
}
- std::shared_ptr<Cache> CacheFactory::create() {
- ACE_Guard<ACE_Recursive_Thread_Mutex> connectGuard(*g_disconnectLock);
- LOGFINE("CacheFactory called DistributedSystem::connect");
- auto cache = create(DEFAULT_CACHE_NAME, nullptr);
+Cache CacheFactory::create() {
+ ACE_Guard<ACE_Recursive_Thread_Mutex> connectGuard(*g_disconnectLock);
- auto& cacheImpl = cache->m_cacheImpl;
- const auto& serializationRegistry = cacheImpl->getSerializationRegistry();
- const auto& pdxTypeRegistry = cacheImpl->getPdxTypeRegistry();
- const auto& memberListForVersionStamp =
- std::ref(*(cacheImpl->getMemberListForVersionStamp()));
+ LOGFINE("CacheFactory called DistributedSystem::connect");
+ auto cache = create(DEFAULT_CACHE_NAME, nullptr);
- serializationRegistry->addType2(
- std::bind(TXCommitMessage::create, memberListForVersionStamp));
+ auto& cacheImpl = cache.m_cacheImpl;
+ const auto& serializationRegistry = cacheImpl->getSerializationRegistry();
Review comment:
In this case no, but in this it does.
```
class foo {
public:
std::string str;
const std::string& getString() {return str;}
}
int main() {
auto&& str = foo{}.getString();
return str.append("bar");
}
```
In your case the `const int` is value return. I don't think there is any
value in the const being applied to the lvalue since its a copy anyway.
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> Update API CacheFactory::create to return cache object
> ------------------------------------------------------
>
> Key: GEODE-3645
> URL: https://issues.apache.org/jira/browse/GEODE-3645
> Project: Geode
> Issue Type: New Feature
> Components: native client
> Reporter: David Kimura
>
> As an application developer I want to control the stack vs heap allocation of
> my cache object. If we change CacheFactory::create to return a cache object
> then the application user can pick an allocation scheme. This also allows
> application developers to bypass smart pointer complexity until the developer
> deems them necessary.
> Example:
> {noformat}
> auto cache = CacheFactory::createFactory().create();
> auto cacheptr =
> std::make_shared<Cache>(CacheFactory::createFactory().create());
> {noformat}
> Difficulty of implementation is due to Cache/CacheImpl circular dependency.
> Here are a few examples of various approaches to consider:
> https://gist.github.com/pivotal-jbarrett/52ba9ec5de0b494368d1c5282ef188ef
> https://gist.github.com/pivotal-jbarrett/c48ffff3f7f41b187f0ed8c80108aa6a
> Here are the related email threads of interest:
> http://markmail.org/message/in5e337npq5euslh
> http://markmail.org/message/lp2rx2rtyblg72fv
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