com.jeroensteenbeeke.hyperion.data.Nullable.java Source code

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Here is the source code for com.jeroensteenbeeke.hyperion.data.Nullable.java

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/**
 * Tysan Clan Website
 * Copyright (C) 2008-2013 Jeroen Steenbeeke and Ties van de Ven
 *
 * 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.jeroensteenbeeke.hyperion.data;

import java.io.Serializable;

import org.hibernate.Criteria;
import org.hibernate.criterion.Criterion;
import org.hibernate.criterion.Restrictions;

import com.jeroensteenbeeke.hyperion.reflection.Reflector;

/**
 * Class for dealing with properties that can be set to null
 * 
 * @author Jeroen Steenbeeke
 */
@Deprecated
public abstract class Nullable<T extends Serializable> extends Expression<T> {
    private static final long serialVersionUID = 1L;

    private Nullable() {
        super();
    }

    private Nullable(T object) {
        super(object);
    }

    public static <T extends Serializable> Nullable<T> isNull(final String property, Class<T> returnType) {
        return new Nullable<T>() {
            private static final long serialVersionUID = 1L;

            @Override
            public void decorateCriteria(Criteria criteria) {
                Criterion c = Restrictions.isNull(property);
                criteria.add(c);
            }

            @Override
            public boolean retain(Object object) {
                Object res = Reflector.invokeGetter(object, property);

                return res == null;
            }
        };
    }

    public static <T extends Serializable> Nullable<T> isNotNull(final String property, Class<T> requiredType) {
        return new Nullable<T>() {
            private static final long serialVersionUID = 1L;

            @Override
            public void decorateCriteria(Criteria criteria) {
                criteria.add(Restrictions.isNotNull(property));
            }

            @Override
            public boolean retain(Object object) {
                Object res = Reflector.invokeGetter(object, property);

                return res != null;
            }
        };
    }

    public static <T extends Serializable> Nullable<T> equals(final String property, T value) {
        return new Nullable<T>(value) {
            private static final long serialVersionUID = 1L;

            @Override
            public void decorateCriteria(Criteria criteria) {
                criteria.add(Restrictions.eq(property, getValue()));
            }

            @Override
            public boolean retain(Object object) {
                return getValue().equals(Reflector.invokeGetter(object, property));
            }
        };
    }
}