com.l2jfree.sql.L2DBEntity.java Source code

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Here is the source code for com.l2jfree.sql.L2DBEntity.java

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/*
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 * 
 * 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 General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package com.l2jfree.sql;

import javax.persistence.Access;
import javax.persistence.AccessType;
import javax.persistence.MappedSuperclass;
import javax.persistence.PostLoad;
import javax.persistence.PostPersist;
import javax.persistence.PostUpdate;
import javax.persistence.Transient;

import org.apache.commons.lang3.StringUtils;

import com.l2jfree.lang.L2Entity;
import com.l2jfree.lang.L2System;
import com.l2jfree.util.Introspection;
import com.l2jfree.util.logging.L2Logger;

/**
 * @author NB4L1
 */
@MappedSuperclass
@Access(AccessType.FIELD)
public abstract class L2DBEntity implements L2Entity<Object> {
    protected static final L2Logger _log = L2Logger.getLogger(L2DBEntity.class);

    // TODO remove once it's not required anymore
    private static final boolean DEBUG = true;

    @Override
    @Transient
    public abstract Object getPrimaryKey();

    @Transient
    protected abstract Class<?> getClassForEqualsCheck();

    @Override
    public int hashCode() {
        final Object pk = getPrimaryKey();

        if (pk == null)
            return 0;

        return L2System.hash(pk.hashCode());
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;

        if (obj == null)
            return false;

        if (!(obj instanceof L2DBEntity))
            return false;

        final L2DBEntity other = (L2DBEntity) obj;

        if (getClassForEqualsCheck() != other.getClassForEqualsCheck())
            return false;

        final Object pk1 = getPrimaryKey();
        final Object pk2 = other.getPrimaryKey();

        return pk1 == null ? pk2 == null : pk1.equals(pk2);
    }

    @Override
    public String toString() {
        return Introspection.toString(this);
    }

    public String toString(int maxWidth) {
        return StringUtils.abbreviate(toString(), maxWidth);
    }

    @PostLoad
    public void postLoad() {
        if (DEBUG)
            _log.info("L2DBEntity.postLoad(): " + toString(80));
    }

    @PostPersist
    public void postPersist() {
        if (DEBUG)
            _log.info("L2DBEntity.postPersist(): " + toString(80));
    }

    @PostUpdate
    public void postUpdate() {
        if (DEBUG)
            _log.info("L2DBEntity.postUpdate(): " + toString(80));
    }
}