foundations/foundation-config/src/main/java/org/apache/servicecomb/config/priority/ConfigObjectProperty.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.servicecomb.config.priority;

import javax.annotation.Nullable;

import org.apache.servicecomb.foundation.common.utils.bean.Setter;

/**
 * do not reference config object instance, otherwise gc for weak hash map will failed
 */
public class ConfigObjectProperty {
  private final Setter<Object, Object> setter;

  private final PriorityProperty<?> property;

  public ConfigObjectProperty(Setter<Object, Object> setter, PriorityProperty<?> property) {
    this.setter = setter;
    this.property = property;
  }

  public void updateValueWhenChanged(Object instance, @Nullable String changedKey) {
    if (property.isChangedKey(changedKey)) {
      setter.set(instance, property.getValue());
    }
  }
}