/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Middleware LLC.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.envers.enhanced;

import org.hibernate.annotations.Fetch;
import org.hibernate.annotations.FetchMode;
import org.hibernate.envers.ModifiedEntityNames;

import javax.persistence.*;
import java.util.HashSet;
import java.util.Set;

/**
 * Extension of standard {@link SequenceIdRevisionEntity} that allows tracking entity names changed in each revision.
 * This revision entity is implicitly used when {@code org.hibernate.envers.track_entities_changed_in_revision}
 * parameter is set to {@code true}.
 * @author Lukasz Antoniak (lukasz dot antoniak at gmail dot com)
 */
@MappedSuperclass
public class SequenceIdTrackingModifiedEntitiesRevisionEntity extends SequenceIdRevisionEntity {
    @ElementCollection(fetch = FetchType.EAGER)
    @JoinTable(name = "REVCHANGES", joinColumns = @JoinColumn(name = "REV"))
    @Column(name = "ENTITYNAME")
    @Fetch(FetchMode.JOIN)
    @ModifiedEntityNames
    private Set<String> modifiedEntityNames = new HashSet<String>();

    public Set<String> getModifiedEntityNames() {
        return modifiedEntityNames;
    }

    public void setModifiedEntityNames(Set<String> modifiedEntityNames) {
        this.modifiedEntityNames = modifiedEntityNames;
    }

    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof SequenceIdTrackingModifiedEntitiesRevisionEntity )) return false;
        if (!super.equals(o)) return false;

        SequenceIdTrackingModifiedEntitiesRevisionEntity that = (SequenceIdTrackingModifiedEntitiesRevisionEntity) o;

        if (modifiedEntityNames != null ? !modifiedEntityNames.equals(that.modifiedEntityNames)
                                        : that.modifiedEntityNames != null) return false;

        return true;
    }

    public int hashCode() {
        int result = super.hashCode();
        result = 31 * result + (modifiedEntityNames != null ? modifiedEntityNames.hashCode() : 0);
        return result;
    }

    public String toString() {
        return "SequenceIdTrackingModifiedEntitiesRevisionEntity(" + super.toString() + ", modifiedEntityNames = " + modifiedEntityNames + ")";
    }
}