org.kuali.ole.ingest.KrmsXMLSchemaValidator.java Source code

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Here is the source code for org.kuali.ole.ingest.KrmsXMLSchemaValidator.java

Source

package org.kuali.ole.ingest;

import org.apache.commons.io.IOUtils;
import org.kuali.ole.exception.ParseException;
import org.kuali.ole.exception.XmlErrorHandler;
import org.xml.sax.SAXException;

import javax.xml.XMLConstants;
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 java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 *  KrmsXMLSchemaValidator is used to validate the xsd schema for KRMS builder.
 */
public class KrmsXMLSchemaValidator {

    private static final String KRMS_SCHEMA_FILE = "license.xsd";

    /**
     *  This method return True/False.
     *  This method checks fileContent schema with W3 Xml schema standards,If it matches it return True else return False.
     * @param inputStream
     * @return  boolean
     * @throws org.kuali.ole.exception.ParseException
     * @throws java.io.IOException
     * @throws org.xml.sax.SAXException
     */
    public boolean validateContentsAgainstSchema(InputStream inputStream)
            throws ParseException, IOException, SAXException {
        try {
            SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
            Source schemaSource = null;
            schemaSource = new StreamSource(getFileContents());
            Schema schema = null;
            schema = factory.newSchema(schemaSource);
            Validator validator = schema.newValidator();
            validator.setErrorHandler(new XmlErrorHandler());
            validator.validate(new StreamSource(inputStream));
            return true;
        } catch (Exception ex) {
            //TODO: logging required
        }
        return false;
    }

    /**
     *  This method will return fileContents based on KRMS Schema File
     * @return  profileXmlFile.
     */
    private InputStream getFileContents() {
        byte[] profileByteArray;
        ByteArrayInputStream profileXmlFile = null;
        try {
            profileByteArray = IOUtils.toByteArray(getClass().getResourceAsStream(KRMS_SCHEMA_FILE));
            profileXmlFile = new ByteArrayInputStream(profileByteArray);
        } catch (Exception e) {
            //TODO: logging required
        }
        return profileXmlFile;
    }
}