blocks|key|820424|text|毫无疑问，H2|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|820425|以下是设置，|820426|+(def+demo-settings
+++{
++++:classname+++"org.h2.Driver"
++++:subprotocol+"h2:file"
++++:subname+++++(str+(System/getProperty+"user.dir")+"/"+"demo")
++++:user++++++++"sa"
++++:password++++""
+++}
++)|code-block|syntax|javascript|820427|然后是常用的Clojure+SQL代码：|820428|++(with-connection+demo-settings+
++++(create-table+:DEMO_TABLE
+++++++++++[:M_LABEL+"varchar(120)"]
+++++++++++[:M_DATE+"varchar(120)"]
+++++++++++[:M_COMMENT+"varchar(32)"]))|820429|entityMap|0|LINK|mutability|MUTABLE|url|http://www.h2database.com/html/main.html^0|5|2|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|11|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|13|8|@]|9|@]|C|$I|J]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

Without a doubt, <a href="http://www.h2database.com/html/main.html" rel="noreferrer">H2</a>

Here are the settings, 

<pre><code> (def demo-settings
 {
 :classname "org.h2.Driver"
 :subprotocol "h2:file"
 :subname (str (System/getProperty "user.dir") "/" "demo")
 :user "sa"
 :password ""
 }
 )
</code></pre>

And then the usual Clojure SQL code: 

<pre><code> (with-connection demo-settings 
 (create-table :DEMO_TABLE
 [:M_LABEL "varchar(120)"]
 [:M_DATE "varchar(120)"]
 [:M_COMMENT "varchar(32)"]))
</code></pre>

blocks|key|605366|text|你看过FleetDB吗？它是一个Clojure数据库，使用JSON协议和多种语言的客户端。我猜想你可以在不花太多力气的情况下运行它。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|605367|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/mmcgrana/fleetdb^0|3|7|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Have you looked at <a href="https://github.com/mmcgrana/fleetdb" rel="nofollow">FleetDB</a>? It's a Clojure database with a JSON protocol and clients in several languages. I suspect you could probably run it embedded without working too hard at it.

blocks|key|820441|text|h2|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|820442|oracle+Berkley+DB|820443|entityMap|0|LINK|mutability|MUTABLE|url|http://www.h2database.com/html/main.html|1|http://www.oracle.com/technetwork/database/berkeleydb/overview/index.html^0|0|2|0|0|0|H|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

<a href="http://www.h2database.com/html/main.html" rel="nofollow">h2</a>

<a href="http://www.oracle.com/technetwork/database/berkeleydb/overview/index.html" rel="nofollow">oracle Berkley DB</a>

blocks|key|820499|text|我在clojure中使用了一个嵌入式数据库H2，并使用clojureQL来访问它。但是请注意，由于数据库正在进行中，因此不应对大量记录(单个表中的记录大于10,000秒)使用此方法，因为数据库和代码将共享相同的JVM，因此会出现严重的性能问题|type|unstyled|depth|inlineStyleRanges|entityRanges|data|820500|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I used an embedded database, H2 within clojure and used clojureQL to access it. Be warned though that since the database is in process you should not use this for large amounts of records (> than 10,000s in a single table) as you will get huge performance problems as the database and your code will both be sharing the same JVM

blocks|key|605386|text|我认为Derby是一个优秀的100%25+Java嵌入式数据库，它适用于各种各样的应用程序，由活跃的社区进行良好的维护，并且有很好的文档记录。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|605387|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I think Derby makes an excellent 100% Java embedded database, and it's useful for a wide variety of applications, well-maintained by an active community, and very well documented.

blocks|key|820622|text|如果你不介意NOSQL，neo4j是一个带有事务的嵌入式图形数据库，在GPL的许可下。我找到的最新的绑定是https://github.com/hgavin/borneo|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|820623|在clojure中还有一个有趣的图形数据库项目，它具有可插拔的后端：https://github.com/flatland/jiraph|820624|仍然相当年轻但看起来很有前途的OrientDB可能值得一看：http://www.orientechnologies.com/orient-db.htm|820625|http://github.com/eduardoejp/clj-orient|820626|然后是http://jdbm.sourceforge.net/|820627|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/hgavin/borneo|1|https://github.com/flatland/jiraph|2|http://www.orientechnologies.com/orient-db.htm|3|4|http://jdbm.sourceforge.net/^0|1H|W|0|0|Y|Y|1|0|U|1A|2|0|0|13|3|0|3|S|4|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]]|C|$]]|$1|D|3|E|5|6|7|14|8|@]|9|@$A|15|B|16|1|17]]|C|$]]|$1|F|3|G|5|6|7|18|8|@]|9|@$A|19|B|1A|1|1B]]|C|$]]|$1|H|3|I|5|6|7|1C|8|@]|9|@$A|1D|B|1E|1|1F]]|C|$]]|$1|J|3|K|5|6|7|1G|8|@]|9|@$A|1H|B|1I|1|1J]]|C|$]]|$1|L|3|-4|5|6|7|1K|8|@]|9|@]|C|$]]]|M|$N|$5|O|P|Q|C|$R|S]]|T|$5|O|P|Q|C|$R|U]]|V|$5|O|P|Q|C|$R|W]]|X|$5|O|P|Q|C|$R|I]]|Y|$5|O|P|Q|C|$R|Z]]]]

If you don't mind NOSQL, neo4j is an embeddable graph db with transactions, licensed under the GPL. The most up to date bindings I've found are <a href="https://github.com/hgavin/borneo" rel="nofollow">https://github.com/hgavin/borneo</a>

There is also an interesting graph db project in clojure with pluggable backends: <a href="https://github.com/flatland/jiraph" rel="nofollow">https://github.com/flatland/jiraph</a>

The still quite young but promising looking OrientDB might be worth a look: <a href="http://www.orientechnologies.com/orient-db.htm" rel="nofollow">http://www.orientechnologies.com/orient-db.htm</a>

<a href="http://github.com/eduardoejp/clj-orient" rel="nofollow">http://github.com/eduardoejp/clj-orient</a>

Then there's <a href="http://jdbm.sourceforge.net/" rel="nofollow">http://jdbm.sourceforge.net/</a>

blocks|key|605484|text|我使用的是https://github.com/clojurewerkz/archimedes，它允许您稍后指定一个后端。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|605485|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/clojurewerkz/archimedes^0|5|16|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

I am using <a href="https://github.com/clojurewerkz/archimedes" rel="nofollow">https://github.com/clojurewerkz/archimedes</a> which allows you to specify a backend later.

blocks|key|605522|text|另一个要考虑的选择是键值存储Chronicle+Map，因为它是纯Java语言并提供了一个普通的Java接口，所以使用Map应该非常简单。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|605523|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/OpenHFT/Chronicle-Map^0|1N|3|E|D|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@$9|Q|A|R|1|S]]|E|$]]|$1|F|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

Another option to consider is a key-value store <a href="https://github.com/OpenHFT/Chronicle-Map" rel="nofollow">Chronicle Map</a>, because it's pure Java and provides a vanilla Java <code>Map</code> interface, so working with it should be very simple using Clojure.

I'm in need for an embedded database for a Clojure application. Maybe it's the same criteria as for any other Java application but I rather get some other people's opinion anyway. I'm not picking SQLite because that's not pure Java so distribution of a standalone application gets much more complex. It seems the way to go is Apache Derby. Anything else I should consider?

Embedded (pure Java) database for Clojure

数据库

SQLite

JSON

Java

我需要一个Clojure应用程序的嵌入式数据库。也许这与其他Java应用程序的标准是一样的，但我还是想听听其他人的意见。我之所以选择SQLite，并不是因为它不是纯Java，所以独立应用程序的分发变得更加复杂。看起来Apache Derby才是前进的方向。还有什么我应该考虑的吗？

问用于Clojure的嵌入式(纯Java)数据库
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