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| <div class="container top-buffer" id="Gora_Gora CouchDB Module"> |
| <h2 id="overview">Overview<a class="headerlink" href="#overview" title="Permalink">¶</a></h2> |
| <p>This is the main documentation for the gora-couchdb module. gora-couchdb module enables <a href="http://couchdb.apache.org/">Apache CouchDB</a> backend support for Gora.</p> |
| <div id="toc"><ul><li><a class="toc-href" href="#goraproperties" title="gora.properties">gora.properties</a></li><li><a class="toc-href" href="#gora-couchdb-mappings" title="Gora CouchDB mappings">Gora CouchDB mappings</a></li></ul></div> |
| <h2 id="goraproperties">gora.properties<a class="headerlink" href="#goraproperties" title="Permalink">¶</a></h2> |
| <ul> |
| <li><code>gora.datastore.default=org.apache.gora.couchdb.store.CouchDBStore</code> - Implementation of the storage class</li> |
| <li><code>gora.datastore.couchdb.server=localhost</code> - Property pointing to the host where the server is running</li> |
| <li><code>gora.datastore.couchdb.port=5984</code> - Property pointing to the port where the server is running</li> |
| <li><code>gora.datastore.mapping.file=gora-couchdb-mapping.xml</code> - The XML mapping file to be used. If no value is used this defaults to.</li> |
| </ul> |
| <h2 id="gora-couchdb-mappings">Gora CouchDB mappings<a class="headerlink" href="#gora-couchdb-mappings" title="Permalink">¶</a></h2> |
| <p>You should then create a gora-couchdb-mapping.xml which will describe how you want to store each of your Gora persistent objects:</p> |
| <pre><code><gora-otd> |
| <class name="org.apache.gora.examples.generated.Employee" keyClass="java.lang.String" table="Employee"> |
| <field name="name"/> |
| <field name="dateOfBirth"/> |
| <field name="ssn"/> |
| <field name="salary"/> |
| <field name="boss"/> |
| <field name="webpage"/> |
| </class> |
| </gora-otd> |
| </code></pre> |
| <p>Here you can see that we require the definition of two child elements within the <code>gora-otd</code> mapping configuration, namely;</p> |
| <p>The class element where we specify of persistent fields which values should map to. This contains;</p> |
| <ol> |
| <li> |
| <p>a parameter containing the Persistent class name e.g. : <b>org.apache.gora.examples.generated.Employee </b>,</p> |
| </li> |
| <li> |
| <p>a parameter containing the keyClass e.g. <b>java.lang.String</b> which specifies the keys which map to the field values,</p> |
| </li> |
| <li> |
| <p>finally nested child element(s) mapping fields which are to be persisted into CouchDB. These fields need to be configured such that they receive; a parameter containing the name e.g. (name, dateOfBirth, ssn and salary respectively),</p> |
| </li> |
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