de.kp.ames.web.function.product.ProductDQM.java Source code

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Here is the source code for de.kp.ames.web.function.product.ProductDQM.java

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package de.kp.ames.web.function.product;
/**
 * This Java module is part of the
 *  Application Developer Framework
 *
 *  Project: AMES-Web-Service
 *  Package: de.kp.ames.web.function.product
 *  Module: ProductDQM
 *  @author krusche@dr-kruscheundpartner.de
 *
 * Add your semantic annotations within the SemanticAssist tags and
 * mark them with a leading hashtag #:
 *
 * <SemanticAssist>
 *     #dqm #function #product #web
 * </SemanticAssist>
 *
 */

/**
 *   Copyright 2012 Dr. Krusche & Partner PartG
 *
 *   AMES-Web-Service 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.
 *
 *   AMES- Web-Service 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 software. If not, see <http://www.gnu.org/licenses/>.
 *
 */

import java.io.InputStream;
import java.util.List;

import javax.activation.DataHandler;

import org.freebxml.omar.client.xml.registry.infomodel.ExtrinsicObjectImpl;
import org.freebxml.omar.client.xml.registry.infomodel.RegistryObjectImpl;
import org.freebxml.omar.common.CanonicalSchemes;
import org.json.JSONArray;
import de.kp.ames.web.GlobalConstants;
import de.kp.ames.web.core.regrep.JaxrHandle;
import de.kp.ames.web.core.regrep.dqm.JaxrDQM;
import de.kp.ames.web.core.util.FileUtil;
import de.kp.ames.web.function.domain.JsonBusinessProvider;
import de.kp.ames.web.shared.constants.ClassificationConstants;

public class ProductDQM extends JaxrDQM {

    private static String EXTRINSIC_OBJECT = CanonicalSchemes.CANONICAL_OBJECT_TYPE_ID_ExtrinsicObject;

    public ProductDQM(JaxrHandle jaxrHandle) {
        super(jaxrHandle);
    }

    /**
     * Retrieve FileUtil representation of a 
     * certain product
     * 
     * @param item
     * @return
     * @throws Exception
     */
    public FileUtil getFile(String item) throws Exception {

        /* 
         * Determine registry object from unique identifier
         */
        RegistryObjectImpl ro = getRegistryObjectById(item);
        if (ro == null)
            throw new Exception("[ProductDQM] RegistryObject with id <" + item + "> does not exist.");

        String objectType = ro.getObjectType().getKey().getId();
        if (!objectType.startsWith(EXTRINSIC_OBJECT))
            throw new Exception("[ProductDQM] Product is not an ExtrinsicObject");

        /* 
         * Extrinsic objects must be restricted to xml document;
         * this is asserted by evaluating the assciated mimetype
         */
        ExtrinsicObjectImpl eo = (ExtrinsicObjectImpl) ro;

        String mimeType = eo.getMimeType();
        if (!mimeType.equals(GlobalConstants.MT_XML))
            throw new Exception("[ProductDQM] Product is no XML file.");

        /*
         * Determine repository item as byte array      
         */
        DataHandler handler = eo.getRepositoryItem();
        if (handler == null)
            throw new Exception("[ProductDQM] Product has no data.");

        InputStream stream = handler.getInputStream();
        byte[] bytes = FileUtil.getByteArrayFromInputStream(stream);

        return new FileUtil(bytes, mimeType);

    }

    /**
     * Get either single product or all registered
     * products
     * 
     * @param item
     * @return
     * @throws Exception
     */
    public JSONArray getProducts(String item) throws Exception {

        /*
         * Determine products
         */
        List<RegistryObjectImpl> products = getRegistryObjects_ByClasNode(item,
                ClassificationConstants.FNC_ID_Product);

        /*
         * Build JSON representation
         */
        return JsonBusinessProvider.getProducts(jaxrHandle, products);

    }

    /**
     * Get either single productor or all
     * registered productors
     * 
     * @param item
     * @return
     * @throws Exception
     */
    public JSONArray getProductors(String item) throws Exception {

        /*
         * Determine productors
         */
        List<RegistryObjectImpl> productors = getRegistryObjects_ByClasNode(item,
                ClassificationConstants.FNC_ID_Productor);

        /*
         * Build JSON representation
         */
        return JsonBusinessProvider.getProductors(jaxrHandle, productors);

    }

}