nifi-registry-core/nifi-registry-framework/src/test/java/org/apache/nifi/registry/GenerateExtensionManifestSchema.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.nifi.registry;

import org.apache.nifi.registry.extension.component.manifest.ExtensionManifest;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.SchemaOutputResolver;
import javax.xml.transform.Result;
import javax.xml.transform.stream.StreamResult;
import java.io.File;
import java.io.IOException;

/**
 * This class can be used generate an XSD for the ExtensionManifest object model.
 *
 * Depending how you run this program the resulting schema will be written to the target directory of
 * nifi-registry-framework, or the target directory of the root nifi-registry module, and will be named schema1.xsd.
 */
public class GenerateExtensionManifestSchema {

    public static void main(String[] args) throws IOException, JAXBException {
        JAXBContext jaxbContext = JAXBContext.newInstance(ExtensionManifest.class);
        SchemaOutputResolver sor = new MySchemaOutputResolver();
        jaxbContext.generateSchema(sor);
    }

    public static class MySchemaOutputResolver extends SchemaOutputResolver {

        public Result createOutput(String namespaceURI, String suggestedFileName) throws IOException {
            File file = new File("./target", suggestedFileName);
            StreamResult result = new StreamResult(file);
            result.setSystemId(file.toURI().toURL().toString());
            return result;
        }

    }
}