org.rutebanken.netex.validation.PredefinedSchemaListClasspathResourceResolver Maven / Gradle / Ivy

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Generates Java model from NeTEx XSDs using JAXB.
There is a newer version: 2.0.15
/*
 * Licensed under the EUPL, Version 1.2 or - as soon they will be approved by
 * the European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 *
 *   https://joinup.ec.europa.eu/software/page/eupl
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 */

package org.rutebanken.netex.validation;

import org.w3c.dom.ls.LSInput;
import org.w3c.dom.ls.LSResourceResolver;

import java.io.*;
import java.util.HashMap;
import java.util.Map;

public class PredefinedSchemaListClasspathResourceResolver implements LSResourceResolver {

    private Map resourceToPathMap = new HashMap<>();

    public PredefinedSchemaListClasspathResourceResolver(String schemaList) throws IOException {

        InputStream resourceAsStream = getClass().getResourceAsStream(schemaList);
        if(resourceAsStream == null) {
        	throw new IOException("Unable to load "+schemaList+" as resource stream");
        }
        BufferedReader r = new BufferedReader(new InputStreamReader(resourceAsStream));
        String resource;
        while ((resource = r.readLine()) != null) {
            String name = resource.substring(resource.lastIndexOf('/') + 1);
            String existing = resourceToPathMap.put(name, resource);
            if (existing != null) {
                throw new RuntimeException("Duplicate resource file on classpath " + name);
            }
        }
    }

    @Override
    public LSInput resolveResource(String type, String namespaceURI, String publicId, String systemId, String baseURI) {
        try {

            String[] parts = systemId.split("/");
            String filename = parts[parts.length - 1];

            LSInput lsInput = createInput(systemId, baseURI);
            String path = resourceToPathMap.get(filename);
            if (path != null) {
                InputStream stream = getClass().getResourceAsStream(path);
                lsInput.setByteStream(stream);
            }
            return lsInput;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    protected LSInput createInput(final String systemId, final String baseUri) throws ClassNotFoundException, InstantiationException, IllegalAccessException {

        return new LSInput() {

            private InputStream is;

            @Override
            public void setSystemId(String systemId) {
            }

            @Override
            public void setStringData(String stringData) {
            }

            @Override
            public void setPublicId(String publicId) {
            }

            @Override
            public void setEncoding(String encoding) {
            }

            @Override
            public void setCharacterStream(Reader characterStream) {
            }

            @Override
            public void setCertifiedText(boolean certifiedText) {
            }

            @Override
            public void setByteStream(InputStream byteStream) {
                is = byteStream;
            }

            @Override
            public void setBaseURI(String baseURI) {
            }

            @Override
            public String getSystemId() {
                return systemId;
            }

            @Override
            public String getStringData() {
                return null;
            }

            @Override
            public String getPublicId() {
                return null;
            }

            @Override
            public String getEncoding() {
                return null;
            }

            @Override
            public Reader getCharacterStream() {
                return null;
            }

            @Override
            public boolean getCertifiedText() {
                return false;
            }

            @Override
            public InputStream getByteStream() {
                return is;
            }

            @Override
            public String getBaseURI() {
                return baseUri;
            }
        };

    }
}