net.geoprism.gis.sld.SLDValidator.java Source code

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Here is the source code for net.geoprism.gis.sld.SLDValidator.java

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/**
 * Copyright (c) 2015 TerraFrame, Inc. All rights reserved.
 *
 * This file is part of Runway SDK(tm).
 *
 * Runway SDK(tm) is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * Runway SDK(tm) 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with Runway SDK(tm).  If not, see <http://www.gnu.org/licenses/>.
 */
package net.geoprism.gis.sld;

import java.io.ByteArrayInputStream;
import java.io.InputStream;

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 org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.runwaysdk.dataaccess.ProgrammingErrorException;

public class SLDValidator {

    //  protected static final String         SLD_SCHEMA     = "src/test/resources/StyledLayerDescriptor.xsd";
    //  
    //  protected static final File           xsd            = new File(SLD_SCHEMA);

    protected static final Log log = LogFactory.getLog(SLDValidator.class);

    private InputStream xsd;

    public SLDValidator() {
        xsd = SLDValidator.class.getClassLoader().getResourceAsStream("StyledLayerDescriptor.xsd");
    }

    public void validate(String sld) {
        try {
            SchemaFactory f = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
            Source xsdS = new StreamSource(xsd);
            Schema schema = f.newSchema(xsdS);
            Validator v = schema.newValidator();

            InputStream stream;
            stream = new ByteArrayInputStream(sld.getBytes("UTF-8"));
            Source s = new StreamSource(stream);
            v.validate(s);
        } catch (Throwable e) {
            log.error(sld, e);
            throw new ProgrammingErrorException("Invalid SLD", e);
        }
    }
}