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beginning of cross-store docs

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Thomas Risberg
2011-04-07 17:19:07 -04:00
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src/docbkx/reference/cross-store.xml
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd">
"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd">
<chapter id="mongo.cross.store">
<title>Cross Store support</title>
<para>Cross Store support introduction.
</para>
<para>Sometimes you need to store data in multiple data stores and these
data stores can be of different types. One might be relational while the
other a document store. For this use case we have created a separate module
in the MongoDB support that handles what we call cross-store support. The
current implemenatation is based on JPA as the driver for the relational
database and we allow select fields in the Entities to be stored in a Mongo
database. In addition to allowing you to store your data in two stores we
also coordinate persistence operations for the non-transactional MongoDB
store with the transaction life-cycle for the relational database.</para>
<section id="mongodb:croos-store-configuration">
<title>Cross Store Configuration</title>
<para>Cross Store...
</para>
<para>Assuming that you have a working JPA application and would like to
add some cross-store persistence for MongoDB. What do you have to add to
your configuration?</para>
<para>First of all you need to add a dependency on the
<filename>spring-data-mongodb-cross-store</filename> module. Using Maven
this is done by adding a dependency to your pom:</para>
<example>
<title>Example Maven pom.xml</title>
<programlisting language="xml">&lt;project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"&gt;
&lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
...
&lt;!-- Spring Data --&gt;
&lt;dependency&gt;
&lt;groupId&gt;org.springframework.data&lt;/groupId&gt;
&lt;artifactId&gt;spring-data-mongodb-cross-store&lt;/artifactId&gt;
&lt;version&gt;${spring.data.mongo.version}&lt;/version&gt;
&lt;/dependency&gt;
...
&lt;/project&gt;
</programlisting>
</example>
<para></para>
</section>
</chapter>