py.una.pol.karaku.dao.entity.interceptors.CaseSensitiveInterceptor.java Source code

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Here is the source code for py.una.pol.karaku.dao.entity.interceptors.CaseSensitiveInterceptor.java

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/*-
 * Copyright (c)
 *
 *       2012-2014, Facultad Politcnica, Universidad Nacional de Asuncin.
 *       2012-2014, Facultad de Ciencias Mdicas, Universidad Nacional de Asuncin.
 *       2012-2013, Centro Nacional de Computacin, Universidad Nacional de Asuncin.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301  USA
 */
package py.una.pol.karaku.dao.entity.interceptors;

import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import javax.annotation.PostConstruct;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.util.ReflectionUtils;
import py.una.pol.karaku.configuration.PropertiesUtil;
import py.una.pol.karaku.dao.annotations.CaseSensitive;
import py.una.pol.karaku.dao.entity.Operation;

/**
 * 
 * @author Arturo Volpe
 * @since 1.0
 * @version 1.0 Oct 1, 2013
 * 
 */
@Component
public class CaseSensitiveInterceptor extends AbstractInterceptor {

    private PropertiesUtil properties;

    private boolean enabled;

    @PostConstruct
    public void postConstruct() {

        enabled = properties.getBoolean("karaku.interceptor.caseSensitive", true);
    }

    @Override
    public Class<?>[] getObservedTypes() {

        if (!enabled) {
            return new Class<?>[] {};
        }

        return new Class<?>[] { String.class };
    }

    @Override
    public Class<?>[] getObservedAnnotations() {

        if (!enabled) {
            return new Class<?>[] {};
        }

        return new Class<?>[] { CaseSensitive.class, void.class };

    }

    @Override
    public boolean interceptable(Operation op, Field f, Object bean) {

        if (op == Operation.DELETE || f.isAnnotationPresent(CaseSensitive.class)) {
            return false;
        }
        boolean interceptable = true;
        for (Annotation a : f.getAnnotations()) {
            if (a.annotationType().isAnnotationPresent(CaseSensitive.class)) {
                interceptable = false;
                break;
            }
        }

        return interceptable;
    }

    @Override
    public void intercept(Operation op, Field f, Object bean) {

        Object o = ReflectionUtils.getField(f, bean);
        String s = (String) o;
        if (s != null) {
            s = s.toUpperCase();
            ReflectionUtils.setField(f, bean, s);
        }
    }

    /**
     * @param properties
     *            properties para setear
     */
    @Autowired
    public void setProperties(PropertiesUtil properties) {

        this.properties = properties;
    }
}