org.hibernate.mapping.SingleTableSubclass.java Source code

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Here is the source code for org.hibernate.mapping.SingleTableSubclass.java

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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.mapping;

import java.util.Iterator;

import org.hibernate.MappingException;
import org.hibernate.boot.spi.MetadataBuildingContext;
import org.hibernate.engine.spi.Mapping;
import org.hibernate.internal.util.collections.JoinedIterator;

/**
 * @author Gavin King
 */
public class SingleTableSubclass extends Subclass {

    public SingleTableSubclass(PersistentClass superclass, MetadataBuildingContext metadataBuildingContext) {
        super(superclass, metadataBuildingContext);
    }

    @SuppressWarnings("unchecked")
    protected Iterator getNonDuplicatedPropertyIterator() {
        return new JoinedIterator(getSuperclass().getUnjoinedPropertyIterator(), getUnjoinedPropertyIterator());
    }

    protected Iterator getDiscriminatorColumnIterator() {
        if (isDiscriminatorInsertable() && !getDiscriminator().hasFormula()) {
            return getDiscriminator().getColumnIterator();
        } else {
            return super.getDiscriminatorColumnIterator();
        }
    }

    public Object accept(PersistentClassVisitor mv) {
        return mv.accept(this);
    }

    public void validate(Mapping mapping) throws MappingException {
        if (getDiscriminator() == null) {
            throw new MappingException("No discriminator found for " + getEntityName()
                    + ". Discriminator is needed when 'single-table-per-hierarchy' "
                    + "is used and a class has subclasses");
        }
        super.validate(mapping);
    }
}