Exported prior reviews from Gerrit Code Review
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* Add whitespaces to SPARQL queries to circumvent possible parser errors.
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* Support the new @Type annotation for property getters.
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* Implement caching for localized property sets.
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* Fixed potential thread-safety problems.
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* Fixed behaviour of contains/containsAll if a raw literal is supplied.
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* Allow to reuse and extend the KOMMA-based property set implementation.
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* Initial implementation of Filterable and rename of Sparql annotation.
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* Remove @iri annotation.
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* Extend property set factory.
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* Use Guice to inject property sets.
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* Remove readonly parameter.
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* Use synchronized HashMap instead of ConcurrentHashMap to save memory.
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* Deleted IClosableIterator interface.
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* Changed sequence of refresh operations to properly invalidate caches before listeners are notified.
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* added license information
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* updated license information