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[[extensions,Extensions]]
= Extensions =

== Overview ==

We try to keep the Polygene™ Core Runtime as lean as possible, and a lot of the power to the Polygene™ Platform comes via its
Extension SPI, which defines clear ways to extend the platform. There are currently the following Extensions types,
each with possibly more than one implementation;

   * Serialization
   * Entity Stores
   * Index / Query Engines
   * Entity Caches
   * Metrics Gathering
   * Reindexing
   * Migration

This section will go through each of the available extensions.
The Polygene™ Extensions are of varying maturity level and we try to maintain a STATUS (dev-status.xml) file indicating
how good the codebase, documentation and unit tests are for each of the libraries. This is highly subjective and
potentially different individuals will judge this differently, but at least it gives a ballpark idea of the situation
for our users.


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include::../../../../extensions/serialization-javaxjson/src/docs/serialization-javaxjson.txt[]

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include::../../../../extensions/serialization-javaxxml/src/docs/serialization-javaxxml.txt[]

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include::../../../../extensions/serialization-messagepack/src/docs/serialization-messagepack.txt[]

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include::../../../../extensions/entitystore-memory/src/docs/es-memory.txt[]

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include::../../../../extensions/entitystore-file/src/docs/es-cassandra.txt[]

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include::../../../../extensions/entitystore-file/src/docs/es-file.txt[]

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include::../../../../extensions/entitystore-geode/src/docs/es-geode.txt[]

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include::../../../../extensions/entitystore-hazelcast/src/docs/es-hazelcast.txt[]

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include::../../../../extensions/entitystore-jclouds/src/docs/es-jclouds.txt[]

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include::../../../../extensions/entitystore-jdbm/src/docs/es-jdbm.txt[]

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include::../../../../extensions/entitystore-leveldb/src/docs/es-leveldb.txt[]

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include::../../../../extensions/entitystore-mongodb/src/docs/es-mongodb.txt[]

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include::../../../../extensions/entitystore-preferences/src/docs/es-preferences.txt[]

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include::../../../../extensions/entitystore-redis/src/docs/es-redis.txt[]

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include::../../../../extensions/entitystore-riak/src/docs/es-riak.txt[]

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include::../../../../extensions/entitystore-sqlkv/src/docs/es-sqlkv.txt[]

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include::../../../../extensions/cache-ehcache/src/docs/cache-ehcache.txt[]

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include::../../../../extensions/cache-memcache/src/docs/cache-memcache.txt[]

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include::../../../../extensions/indexing-elasticsearch/src/docs/index-elasticsearch.txt[]

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include::../../../../extensions/indexing-rdf/src/docs/index-rdf.txt[]

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include::../../../../extensions/indexing-solr/src/docs/index-solr.txt[]

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include::../../../../extensions/indexing-sql/src/docs/index-sql.txt[]

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include::../../../../extensions/metrics-codahale/src/docs/metrics-codahale.txt[]

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include::../../../../extensions/migration/src/docs/migration.txt[]

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include::../../../../extensions/reindexer/src/docs/reindexer.txt[]

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