GenericPositionPair XML:
<mapped-superclass name="GenericPositionPair">
<indexes>
<index columns="position" />
</indexes>
<field name="position" type="integer" column="position" />
</mapped-superclass>

GenericPrimaryPositionPair XML:
<mapped-superclass name="GenericPrimaryPositionPair">
<indexes>
<index columns="isPrimary" />
</indexes>
<field name="isPrimary" type="boolean" column="isPrimary" />
</mapped-superclass>

PrimaryPositionPair XML:
<entity name="PrimaryPositionPair" table="PrimaryPositionPair">
<id name="first" type="integer" column="first_id" association-key="true" />
<id name="second" type="integer" column="second_id" association-key="true" />
<many-to-one field="first" target-entity="First">
<join-column name="first_id" referenced-column-name="id" />
</many-to-one>
<many-to-one field="second" target-entity="Second">
<join-column name="second_id" referenced-column-name="id" />
</many-to-one>
</entity>

PHP:
PrimaryPositionPair exteds GenericPrimaryPositionPair
GenericPrimaryPositionPair extends GenericPositionPair

Finally - the resulting SQL statement contains no idexes on position and isPrimary fields.

Suggestion - wouldn't it be easier to just include attribute index="true" instead od <indexes> tag, since attribute unique="true" already works.

Hello, I have the following XML mapping

<entity name="Auth" table="Auth">
<id name="itemname" column="itemname" type="string" length="64" />
<id name="userid" column="userid" type="string" length="64" />
<field name="bizrule" column="bizrule" type="text" nullable="true" />
<field name="data" column="data" type="text" nullable="true" />
</entity>

And the sql output is:

CREATE TABLE Auth (itemname VARCHAR(255) NOT NULL, userid VARCHAR(255) NOT NULL, bizrule LONGTEXT DEFAULT NULL, data LONGTEXT DEFAULT NULL, PRIMARY KEY(itemname, userid)) ENGINE ...

So, the length atrtibute is always ignored. In MyIsam it breaks the script because of the maximum key limit