dubbo-admin-server/src/main/java/org/apache/dubbo/admin/common/util/YamlParser.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.dubbo.admin.common.util;

import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.introspector.Property;
import org.yaml.snakeyaml.nodes.NodeTuple;
import org.yaml.snakeyaml.nodes.Tag;
import org.yaml.snakeyaml.representer.Representer;

public class YamlParser {

    private static Yaml yaml;

    static {
        Representer representer = new Representer() {

            protected NodeTuple representJavaBeanProperty(Object javaBean, Property property, Object propertyValue, Tag customTag) {
                if (propertyValue == null) {
                    return null;
                }
                else {
                    return super.representJavaBeanProperty(javaBean, property, propertyValue, customTag);
                }
            }
        };
        yaml = new Yaml(representer);
    }

    public static String dumpObject(Object object) {
        return yaml.dumpAsMap(object);
    }

    public static <T> T loadObject(String content, Class<T> type) {
        return yaml.loadAs(content, type);
    }
}