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    1   /*   Copyright 2004 The Apache Software Foundation
    2    *
    3    *   Licensed under the Apache License, Version 2.0 (the "License");
    4    *   you may not use this file except in compliance with the License.
    5    *   You may obtain a copy of the License at
    6    *
    7    *       http://www.apache.org/licenses/LICENSE-2.0
    8    *
    9    *   Unless required by applicable law or agreed to in writing, software
   10    *   distributed under the License is distributed on an "AS IS" BASIS,
   11    *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   12    *   See the License for the specific language governing permissions and
   13    *  limitations under the License.
   14    */
   15   
   16   package org.apache.xmlbeans.samples.xsdconfig;
   17   
   18   /**
   19    *This class uses the package names and class names mentioned in XsdConfig. 
   20    *Note the difference between the imports in two files (CatalogXsdConfig.java and CatalogXsd.java)
   21    */
   22   
   23   import com.catalog.XmlCatalogDocumentBean;
   24   import com.catalog.XmlJournalDocumentBean;
   25   import com.catalog.XmlArticleDocumentBean;
   26   import com.catalog.XmlShortItemBean;
   27   
   28   import org.apache.xmlbeans.XmlException;
   29   import org.apache.xmlbeans.XmlError;
   30   import org.apache.xmlbeans.XmlObject;
   31   import org.apache.xmlbeans.XmlOptions;
   32   
   33   import java.util.ArrayList;
   34   import java.io.IOException;
   35   import java.io.File;
   36   
   37   public class CatalogXsdConfig
   38   {
   39   
   40       public static void main(String[] args)
   41       {
   42           // Create an instance of this class to work with.
   43           CatalogXsdConfig catxsdconfig = new CatalogXsdConfig();
   44   
   45           // Create an instance of a type based on the received XML's schema
   46           XmlCatalogDocumentBean catdoc = catxsdconfig.parseXml(args[0]);
   47   
   48           //Prints the element values from the XML.
   49           catxsdconfig.printElements(catdoc);
   50       }
   51   
   52       /**
   53        * Creates a File from the XML path provided in main arguments, then
   54        * parses the file's contents into a type (CatalogDocument) generated from schema.
   55        *
   56        * @param xmlFilePath A path to XML based on the schema in EasyPo.xsd
   57        * @return An instance of a generated schema type (CatalogDocument) that contains the
   58        *         parsed XML.
   59        */
   60       public XmlCatalogDocumentBean parseXml(String xmlFilePath)
   61       {
   62           File xmlfile = new File(xmlFilePath);
   63           XmlCatalogDocumentBean catdoc = null;
   64   
   65           try
   66           {
   67               catdoc = XmlCatalogDocumentBean.Factory.parse(xmlfile);
   68           }
   69           catch (XmlException e)
   70           {
   71               e.printStackTrace();
   72           }
   73           catch (IOException e)
   74           {
   75               e.printStackTrace();
   76           }
   77           return catdoc;
   78       }
   79   
   80       /*
   81        * This method prints all the element values in the given XML document based on Catalog.xsd
   82        */
   83       public void printElements(XmlCatalogDocumentBean catdoc)
   84       {
   85           // Get object reference of root element.
   86           XmlCatalogDocumentBean.Catalog catalogelement = catdoc.getCatalog();
   87   
   88           //Get all <journal> element from the root element.
   89           XmlJournalDocumentBean.Journal[] journalarray = catalogelement.getJournalArray();
   90   
   91           //Loop through <journal> element array.
   92           for (int i = 0; i < journalarray.length; i++)
   93           {
   94   
   95               //Retrieve all <article> elements within each <journal> element
   96               XmlArticleDocumentBean.Article[] articlearray = journalarray[i].getArticleArray();
   97   
   98               //Loop through <article> array retrieved above
   99               for (int j = 0; j < articlearray.length; j++)
  100               {
  101                   System.out.println(articlearray[j].getTitle());
  102   
  103                   String[] str = articlearray[j].getAuthorArray();
  104   
  105                   for (int k = 0; k < str.length; k++)
  106                       System.out.println(str[k]);
  107   
  108                   //Note the method for retrieving <forsample> element.
  109                   System.out.println(
  110                       articlearray[j].getXmlShortItemBean().getGoodName());
  111   
  112               }
  113           }
  114           System.out.println("\n\n\n");
  115       }
  116   
  117       /**
  118        * <p>Validates the XML, printing error messages when the XML is invalid. Note
  119        * that this method will properly validate any instance of a compiled schema
  120        * type because all of these types extend XmlObject.</p>
  121        * <p/>
  122        * <p>Note that in actual practice, you'll probably want to use an assertion
  123        * when validating if you want to ensure that your code doesn't pass along
  124        * invalid XML. This sample prints the generated XML whether or not it's
  125        * valid so that you can see the result in both cases.</p>
  126        *
  127        * @param xml The XML to validate.
  128        * @return <code>true</code> if the XML is valid; otherwise, <code>false</code>
  129        */
  130       public static boolean validateXml(XmlObject xml)
  131       {
  132           boolean isXmlValid = false;
  133   
  134           // A collection instance to hold validation error messages.
  135           ArrayList validationMessages = new ArrayList();
  136   
  137           // Validate the XML, collecting messages.
  138           isXmlValid = xml.validate(
  139               new XmlOptions().setErrorListener(validationMessages));
  140   
  141           // If the XML isn't valid, print the messages.
  142           if (!isXmlValid)
  143           {
  144               System.out.println("\nInvalid XML: ");
  145               for (int i = 0; i < validationMessages.size(); i++)
  146               {
  147                   XmlError error = (XmlError) validationMessages.get(i);
  148                   System.out.println(error.getMessage());
  149                   System.out.println(error.getObjectLocation());
  150               }
  151           }
  152           return isXmlValid;
  153       }
  154   
  155   }

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