recetas.backend.model.DAOCategorias.java Source code

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Here is the source code for recetas.backend.model.DAOCategorias.java

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package recetas.backend.model;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.codehaus.jackson.map.ObjectMapper;
import org.hibernate.Criteria;
import org.hibernate.Hibernate;
import org.hibernate.criterion.Restrictions;
import recetas.backend.json.Receta;

/**
 *
 * @author rafael
 */
public class DAOCategorias extends DAO {

    public DAOCategorias() {
        this.openBegin();
    }

    @Override
    public String buscar() throws IOException {
        Criteria cricri = this.session.createCriteria(Categorias.class);
        ObjectMapper mapper = new ObjectMapper();

        ArrayList<Categorias> categorias = (ArrayList<Categorias>) cricri.list();
        Map<String, ArrayList<Categorias>> map = Collections.singletonMap("categorias", categorias);

        this.closeCommit();
        return mapper.writeValueAsString(map);
    }

    @Override
    public String buscar(Integer id) throws IOException {
        Criteria cricri = this.session.createCriteria(Categorias.class).add(Restrictions.idEq(id));
        ObjectMapper mapper = new ObjectMapper();

        Categorias categoria = (Categorias) cricri.uniqueResult();
        Hibernate.initialize(categoria.getRecetasList());
        List<Recetas> recetas = categoria.getRecetasList();

        ArrayList<Object> recetaList = new ArrayList<Object>();

        for (Recetas r : recetas) {
            Receta rjson = new Receta(r);
            recetaList.add(rjson);
        }

        Map<String, Object> map = new LinkedHashMap<String, Object>();
        map.put("categoria", categoria);
        map.put("recetas", recetaList);

        this.closeCommit();
        return mapper.writeValueAsString(map);
    }

    @Override
    public String guardar(Object entity) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        Categorias c = (Categorias) entity;
        this.session.save(c);
        this.closeCommit();
        return mapper.writeValueAsString(c);
    }

    @Override
    public String actualizar(Object entity) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        Categorias c = (Categorias) entity;
        this.session.update(c);
        this.closeCommit();
        return mapper.writeValueAsString(c);
    }

    @Override
    public String borrar(Object entity) throws IOException {
        Categorias c = (Categorias) entity;
        this.session.delete(c);
        this.closeCommit();
        return "";
    }

}