Example usage for org.hibernate.sql SimpleSelect addColumns

Introduction

In this page you can find the example usage for org.hibernate.sql SimpleSelect addColumns.

Prototype

public SimpleSelect addColumns(String[] columnNames) 

Source Link

Usage

From source file:net.digitalprimates.persistence.translators.hibernate.HibernateSerializer.java

License:Open Source License

/**
 * Query the database and get a result set of IDS that belong to a specific
 * collection//from   w w w. j  av  a2s  . c om
 * 
 * @return
 */
private List getPkIds(SessionImplementor session, CollectionPersister persister,
        PersistentCollection collection) throws ClassNotFoundException {
    AbstractCollectionPersister absPersister = (AbstractCollectionPersister) persister;
    String[] keyNames;

    if (absPersister.isOneToMany() || absPersister.isManyToMany()) {
        keyNames = absPersister.getElementColumnNames();
    } else {
        keyNames = absPersister.getKeyColumnNames();
    }
    //String[] columnNames = absPersister.getElementColumnNames();

    SimpleSelect pkSelect = new SimpleSelect(((SessionImpl) session).getFactory().getDialect());
    pkSelect.setTableName(absPersister.getTableName());
    pkSelect.addColumns(keyNames);
    pkSelect.addCondition(absPersister.getKeyColumnNames(), "=?");

    String sql = pkSelect.toStatementString();
    List results = new ArrayList();

    try {
        // int size = absPersister.getSize(collection.getKey(), eventSession);
        Query q2 = ((SessionImpl) session).createSQLQuery(sql).setParameter(0, collection.getKey())
                .setResultTransformer(new PassThroughResultTransformer());

        List hibernateResults = q2.list();
        //return results;

        Type t = persister.getKeyType();

        PreparedStatement stmt = ((SessionImpl) session).connection().prepareStatement(sql);
        if (t instanceof StringType) {
            stmt.setString(1, collection.getKey().toString());
        } else {
            stmt.setObject(1, new Integer(collection.getKey().toString()).intValue());
        }

        ResultSet keyResults = stmt.executeQuery();

        while (keyResults.next()) {
            results.add(keyResults.getObject(1));
        }

    } catch (Exception ex) {
        ex.printStackTrace();
    }

    return results;
}

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