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POHibernate: Bypass generated ID in some case
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  1. POHibernate: Bypass generated ID in some case
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    copied!<p>I have two entity Parent and Child. Parent can have only one child so it contains foreign key of a child.</p> <p>All ID are generated by a custom implementation of IdentifierGenerator. For some entity, I want to set manually the ID. So I found a way in my custom IdentifierGenerator to get the value of the id field.</p> <p>The problem is that the generator is never called when the id of the child was previously defined and the child was not yet persisted.</p> <p>parent-hbm.xml file:</p> <pre><code>&lt;hibernate-mapping default-cascade="all"&gt; &lt;class name="com.ParentImpl" table="Parent" dynamic-insert="false" dynamic-update="false"&gt; &lt;cache usage="read-write" /&gt; &lt;id name="id" type="java.lang.Long" unsaved-value="null"&gt; &lt;column name="ID" sql-type="BIGINT"/&gt; &lt;generator class="com.EntityIdGenerator"&gt; &lt;/generator&gt; &lt;/id&gt; &lt;many-to-one name="child" class="com.ChildImpl" foreign-key="CHILDSC" cascade="all" lazy="false" fetch="select"&gt; &lt;column name="CHILD_FK" not-null="true" sql-type="BIGINT" unique="true"/&gt; &lt;/many-to-one&gt; &lt;/class&gt; &lt;/hibernate-mapping&gt; </code></pre> <p>child-hbm.xml file:</p> <pre><code>&lt;id name="id" type="java.lang.Long" unsaved-value="null"&gt; &lt;column name="ID" sql-type="BIGINT"/&gt; &lt;generator class="com.EntityIdGenerator"&gt; &lt;/generator&gt; &lt;/id&gt; </code></pre> <p>How can I change this behaviour ?</p> <p>Any idea ?</p> <p>THanks in advance.</p>
 

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