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<img id="email-avatar" src="https://hibernate.onjira.com/secure/useravatar?ownerId=steve&avatarId=10346" alt="" height="48" width="48" border="0" align="left" style="padding:0;margin: 0 16px 16px 0;" />
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<a class="user-hover" rel="steve" id="email_steve" href="https://hibernate.onjira.com/secure/ViewProfile.jspa?name=steve" style="color:#6c797f;">Steve Ebersole</a>
commented on <img src="https://hibernate.onjira.com/images/icons/improvement.gif" height="16" width="16" border="0" align="absmiddle" alt="Improvement"> <a style='color:#6c797f;text-decoration:none;' href='https://hibernate.onjira.com/browse/HHH-7725'>HHH-7725</a>
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<a style='color:#6c797f;text-decoration:none;' href='https://hibernate.onjira.com/browse/HHH-7725'><strong>Make handling multi-table bulk HQL operations more pluggable</strong></a>
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<div class="comment-block" style="background-color:#edf5ff;border:1px solid #dddddd;color:#000000;padding:12px;"><p>Here is the working first iteration:</p>
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<pre class="code-java">/**
* Generalized strategy contract <span class="code-keyword">for</span> handling multi-table bulk HQL operations.
*
* @author Steve Ebersole
*/
<span class="code-keyword">public</span> <span class="code-keyword">interface</span> MultiTableBulkIdStrategy {
/**
* Prepare the strategy. Called as the SessionFactory is being built. Intended patterns here include:<ul>
* <li>Adding tables to the passed Mappings, to be picked by by <span class="code-quote">"schema management tools"</span></li>
* <li>Manually creating the tables immediately through the passed JDBC Connection access</li>
* </ul>
*
* @param dialect The dialect
* @param connectionAccess Access to the JDBC Connection
* @param mappings The Hibernate Mappings object
*/
<span class="code-keyword">public</span> void prepare(Dialect dialect, JdbcConnectionAccess connectionAccess, Mappings mappings);
/**
* Release the strategy. Called as the SessionFactory is being shut down.
*
* @param dialect The dialect
* @param connectionAccess Access to the JDBC Connection
*/
<span class="code-keyword">public</span> void release(Dialect dialect, JdbcConnectionAccess connectionAccess);
/**
* Handler <span class="code-keyword">for</span> dealing with multi-table HQL bulk update statements.
*/
<span class="code-keyword">public</span> <span class="code-keyword">static</span> <span class="code-keyword">interface</span> UpdateHandler {
<span class="code-keyword">public</span> Queryable getTargetedQueryable();
<span class="code-keyword">public</span> <span class="code-object">String</span>[] getSqlStatements();
<span class="code-keyword">public</span> <span class="code-object">int</span> execute(SessionImplementor session, QueryParameters queryParameters);
}
/**
* Build a handler capable of handling the bulk update indicated by the given walker.
*
* @param factory The SessionFactory
* @param walker The AST walker, representing the update query
*
* @<span class="code-keyword">return</span> The handler
*/
<span class="code-keyword">public</span> UpdateHandler buildUpdateHandler(SessionFactoryImplementor factory, HqlSqlWalker walker);
/**
* Handler <span class="code-keyword">for</span> dealing with multi-table HQL bulk delete statements.
*/
<span class="code-keyword">public</span> <span class="code-keyword">static</span> <span class="code-keyword">interface</span> DeleteHandler {
<span class="code-keyword">public</span> Queryable getTargetedQueryable();
<span class="code-keyword">public</span> <span class="code-object">String</span>[] getSqlStatements();
<span class="code-keyword">public</span> <span class="code-object">int</span> execute(SessionImplementor session, QueryParameters queryParameters);
}
/**
* Build a handler capable of handling the bulk delete indicated by the given walker.
*
* @param factory The SessionFactory
* @param walker The AST walker, representing the delete query
*
* @<span class="code-keyword">return</span> The handler
*/
<span class="code-keyword">public</span> DeleteHandler buildDeleteHandler(SessionFactoryImplementor factory, HqlSqlWalker walker);
}</pre>
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