org.hibernate.impl.CriteriaImpl Java Examples

private void createAssociationPathCriteriaMap() {
	Iterator iter = rootCriteria.iterateSubcriteria();
	while ( iter.hasNext() ) {
		CriteriaImpl.Subcriteria crit = ( CriteriaImpl.Subcriteria ) iter.next();
		String wholeAssociationPath = getWholeAssociationPath( crit );
		Object old = associationPathCriteriaMap.put( wholeAssociationPath, crit );
		if ( old != null ) {
			throw new QueryException( "duplicate association path: " + wholeAssociationPath );
		}
		int joinType = crit.getJoinType();
		old = associationPathJoinTypesMap.put( wholeAssociationPath, new Integer( joinType ) );
		if ( old != null ) {
			// TODO : not so sure this is needed...
			throw new QueryException( "duplicate association path: " + wholeAssociationPath );
		}
	}
}
 

public CriteriaQueryTranslator(
		final SessionFactoryImplementor factory,
        final CriteriaImpl criteria,
        final String rootEntityName,
        final String rootSQLAlias) throws HibernateException {
	this.rootCriteria = criteria;
	this.rootEntityName = rootEntityName;
	this.sessionFactory = factory;
	this.rootSQLAlias = rootSQLAlias;
	createAliasCriteriaMap();
	createAssociationPathCriteriaMap();
	createCriteriaEntityNameMap();
	createCriteriaSQLAliasMap();
}
 

/**
 * Return a existing alias for propertyPath on Criteria or null if none
 * @param criteria Hibernate Criteria
 * @param propertyPath the property path
 * @return alias or null if none
 */
public static String findAliasForPropertyPath(Criteria criteria, String propertyPath) {
	CriteriaImpl c = (CriteriaImpl) criteria;
	Iterator iter = c.iterateSubcriteria();
	while (iter.hasNext()) {
		Subcriteria subCriteria = (Subcriteria) iter.next();
		if (propertyPath.equals(subCriteria.getPath()));
			return subCriteria.getAlias();
	}
	// not found
	return null; 
}
 

/**
 * Get Page, apply filter if any.
 * If Filter is a entity model, use Example to create a criteria.
 * else enable filter by name on session. 
 * @param page with page definitions
 * @return page of results
 */
@SuppressWarnings({ "unchecked", "rawtypes" })
public <K> Page<K> getPage(Page<K> page) {
	
	List data = null;
	// try named query
	Query query = getQuery(page);
	if (query != null) {
		data = query.list();
	}
	else {
		// try filter, example and criteria builders
		Criteria criteria = getCriteria(page);
		ResultTransformer rt = ((CriteriaImpl) criteria).getResultTransformer(); 
		criteria.setProjection(Projections.rowCount());
		 page.setCount(((Long) criteria.uniqueResult()).intValue());
		// reset criteria
		criteria.setProjection(null);
		criteria.setResultTransformer(rt);
		// set start index and page size
		criteria.setFirstResult(page.getStartIndex())
			.setMaxResults(page.getPageSize());
		applyOrder(page, criteria);
		// run it
		criteria.setCacheable(cachePageQueries);
		data = criteria.list();
	}
	
	page.setData(data);
	
	return page;
}
 

public String getOrderBy() {
	StringBuffer orderBy = new StringBuffer( 30 );
	Iterator criterionIterator = rootCriteria.iterateOrderings();
	while ( criterionIterator.hasNext() ) {
		CriteriaImpl.OrderEntry oe = ( CriteriaImpl.OrderEntry ) criterionIterator.next();
		orderBy.append( oe.getOrder().toSqlString( oe.getCriteria(), this ) );
		if ( criterionIterator.hasNext() ) {
			orderBy.append( ", " );
		}
	}
	return orderBy.toString();
}
 

public String getWhereCondition() {
	StringBuffer condition = new StringBuffer( 30 );
	Iterator criterionIterator = rootCriteria.iterateExpressionEntries();
	while ( criterionIterator.hasNext() ) {
		CriteriaImpl.CriterionEntry entry = ( CriteriaImpl.CriterionEntry ) criterionIterator.next();
		String sqlString = entry.getCriterion().toSqlString( entry.getCriteria(), this );
		condition.append( sqlString );
		if ( criterionIterator.hasNext() ) {
			condition.append( " and " );
		}
	}
	return condition.toString();
}
 

public String toSqlString(Criteria criteria, CriteriaQuery criteriaQuery)
throws HibernateException {
	
	final SessionImplementor session = ( (CriteriaImpl) criteria ).getSession(); //ugly!
	final SessionFactoryImplementor factory = session.getFactory();
	
	final OuterJoinLoadable persister = (OuterJoinLoadable) factory.getEntityPersister( criteriaImpl.getEntityOrClassName() );
	CriteriaQueryTranslator innerQuery = new CriteriaQueryTranslator( 
			factory, 
			criteriaImpl, 
			criteriaImpl.getEntityOrClassName(), //implicit polymorphism not supported (would need a union) 
			criteriaQuery.generateSQLAlias(),
			criteriaQuery
		);
	
	params = innerQuery.getQueryParameters(); //TODO: bad lifecycle....
	types = innerQuery.getProjectedTypes();
	
	//String filter = persister.filterFragment( innerQuery.getRootSQLALias(), session.getEnabledFilters() );
	
	String sql = new Select( factory.getDialect() )
		.setWhereClause( innerQuery.getWhereCondition() )
		.setGroupByClause( innerQuery.getGroupBy() )
		.setSelectClause( innerQuery.getSelect() )
		.setFromClause(
				persister.fromTableFragment( innerQuery.getRootSQLALias() ) +   
				persister.fromJoinFragment( innerQuery.getRootSQLALias(), true, false )
			)
		.toStatementString();
	
	final StringBuffer buf = new StringBuffer()
		.append( toLeftSqlString(criteria, criteriaQuery) );
	if (op!=null) buf.append(' ').append(op).append(' ');
	if (quantifier!=null) buf.append(quantifier).append(' ');
	return buf.append('(').append(sql).append(')')
		.toString();
}
 

public CriteriaQueryTranslator(
		final SessionFactoryImplementor factory,
        final CriteriaImpl criteria,
        final String rootEntityName,
        final String rootSQLAlias,
        CriteriaQuery outerQuery) throws HibernateException {
	this( factory, criteria, rootEntityName, rootSQLAlias );
	outerQueryTranslator = outerQuery;
}
 

public CriteriaLoader(
		final OuterJoinLoadable persister,
		final SessionFactoryImplementor factory,
		final CriteriaImpl criteria,
		final String rootEntityName,
		final Map enabledFilters)
throws HibernateException {
	super(factory, enabledFilters);

	translator = new CriteriaQueryTranslator(
			factory,
			criteria,
			rootEntityName,
			CriteriaQueryTranslator.ROOT_SQL_ALIAS
		);

	querySpaces = translator.getQuerySpaces();

	CriteriaJoinWalker walker = new CriteriaJoinWalker(
			persister,
			translator,
			factory,
			criteria,
			rootEntityName,
			enabledFilters
		);

	initFromWalker(walker);

	userAliases = walker.getUserAliases();
	resultTypes = walker.getResultTypes();

	postInstantiate();

}
 

public CriteriaJoinWalker(
		final OuterJoinLoadable persister, 
		final CriteriaQueryTranslator translator,
		final SessionFactoryImplementor factory, 
		final CriteriaImpl criteria, 
		final String rootEntityName,
		final Map enabledFilters)
throws HibernateException {
	super(persister, factory, enabledFilters);

	this.translator = translator;

	querySpaces = translator.getQuerySpaces();

	if ( translator.hasProjection() ) {
		resultTypes = translator.getProjectedTypes();
		
		initProjection( 
				translator.getSelect(), 
				translator.getWhereCondition(), 
				translator.getOrderBy(),
				translator.getGroupBy(),
				LockMode.NONE 
			);
	}
	else {
		resultTypes = new Type[] { TypeFactory.manyToOne( persister.getEntityName() ) };

		initAll( translator.getWhereCondition(), translator.getOrderBy(), LockMode.NONE );
	}
	
	userAliasList.add( criteria.getAlias() ); //root entity comes *last*
	userAliases = ArrayHelper.toStringArray(userAliasList);

}
 

public CriteriaImpl getRootCriteria() {
	return rootCriteria;
}
 

CriteriaImpl getCriteriaImpl() {
	return impl;
}
 

protected DetachedCriteria(CriteriaImpl impl, Criteria criteria) {
	this.impl = impl;
	this.criteria = criteria;
}
 

protected DetachedCriteria(String entityName, String alias) {
	impl = new CriteriaImpl(entityName, alias, null);
	criteria = impl;
}
 

protected DetachedCriteria(String entityName) {
	impl = new CriteriaImpl(entityName, null);
	criteria = impl;
}
 

/**
 * Execute a criteria query
 */
public ScrollableResults scroll(CriteriaImpl criteria, ScrollMode scrollMode);
 

/**
 * Execute a criteria query
 */
public List list(CriteriaImpl criteria);