XMLValidatorTest.java

package org.dataone.tests;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;

import javax.xml.XMLConstants;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.LineIterator;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.xml.sax.SAXException;


public class XMLValidatorTest {

	public static void main(String[] args) {
		LineIterator iterator = null;
		URL netCDFFile;
		File urlList;

		try {						
			urlList = new File("/Users/cjones/d1-test/mstmip/CSDGM-Schemas/mstmip-urls.txt");
			
			iterator = FileUtils.lineIterator(urlList, "UTF-8");
			
			while( iterator.hasNext() ) {
				String nc4URLStr = iterator.nextLine().trim();
				String fgdcURLStr = nc4URLStr + ".fgdc.xml";
				String ncmlURLStr = nc4URLStr + ".ncml.xml";
				
				URL nc4URL = new URL(nc4URLStr);
				URL fgdcURL = new URL(fgdcURLStr);
				URL ncmlURL = new URL(ncmlURLStr);
				System.out.println(nc4URLStr);
				System.out.println(fgdcURLStr);
				System.out.println(ncmlURLStr);
				System.out.println("----------------------------\n");
				
				InputStream fgdcStream = fgdcURL.openStream();
				// String fgdcXML = IOUtils.toString(fgdcStream, "ISO-8859-1");
			
				InputStream ncmlStream = ncmlURL.openStream();
				// String ncmlXML = IOUtils.toString(ncmlStream, "ISO-8859-1");
			
				//System.out.println(fgdcXML);
				//System.out.println(ncmlXML);
				DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
				DocumentBuilder builder;
				
				builder = factory.newDocumentBuilder();
				
				Document fgdcDocument = builder.parse(fgdcURLStr);
				Element rootElement = fgdcDocument.getDocumentElement();
				String fgdcSchemaURIStr = rootElement.getAttribute("xsi:noNamespaceSchemaLocation");
				URL schemaURL = new URL(fgdcSchemaURIStr);
				SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);				
				Schema schema = schemaFactory.newSchema(schemaURL);

				Source xmlSource = new StreamSource(fgdcStream);
				
				Validator validator = schema.newValidator();
				
				validator.validate(xmlSource);
				
				System.out.println("File is valid: " + fgdcURLStr);
				

			}
				
		} catch (MalformedURLException e) {
			e.printStackTrace();

		} catch (SAXException e) {
			e.printStackTrace();
			
		} catch (IOException e) {
			e.printStackTrace();
		
		} catch (ParserConfigurationException e) {
			e.printStackTrace();
			
		} finally {
			iterator.close();
			
		}
		

	}

}