content: /*
   * 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 com.alibaba.compileflow.engine.config;
  
  import java.util.Map;
  import java.util.Optional;
  
  /**
   * Simple in-memory {@link PropertyResolver} backed by a key-value map of strings.
   * Useful for programmatically supplying highest-precedence properties.
   *
   * @author yusu
   */
  public final class MapPropertyResolver implements PropertyResolver {
  
      private final Map<String, String> properties;
  
      public MapPropertyResolver(Map<String, String> properties) {
          this.properties = properties;
      }
  
      @Override
      public String getString(String key, String defaultValue) {
          return Optional.ofNullable(properties).map(properties -> properties.get(key)).orElse(defaultValue);
      }
  
      @Override
      public int getInt(String key, int defaultValue) {
          String v = getString(key, null);
          if (v == null) {
              return defaultValue;
          }
          try {
              return Integer.parseInt(v);
          } catch (NumberFormatException e) {
              return defaultValue;
          }
      }
  
      @Override
      public long getLong(String key, long defaultValue) {
          String v = getString(key, null);
          if (v == null) {
              return defaultValue;
          }
          try {
              return Long.parseLong(v);
          } catch (NumberFormatException e) {
              return defaultValue;
          }
      }
  
      @Override
      public boolean getBoolean(String key, boolean defaultValue) {
          String v = getString(key, null);
          return v != null ? Boolean.parseBoolean(v) : defaultValue;
      }
  }
  
  
  