content: package com.ctrip.framework.apollo.model;
  
  import com.ctrip.framework.apollo.enums.PropertyChangeType;
  
  /**
   * @author Jason Song(song_s@ctrip.com)
   */
  public class ConfigFileChangeEvent {
    private final String namespace;
    private final String oldValue;
    private final String newValue;
    private final PropertyChangeType changeType;
  
    /**
     * Constructor.
     *
     * @param namespace the namespace of the config file change event
     * @param oldValue the value before change
     * @param newValue the value after change
     * @param changeType the change type
     */
    public ConfigFileChangeEvent(String namespace, String oldValue, String newValue,
        PropertyChangeType changeType) {
      this.namespace = namespace;
      this.oldValue = oldValue;
      this.newValue = newValue;
      this.changeType = changeType;
    }
  
    public String getNamespace() {
      return namespace;
    }
  
    public String getOldValue() {
      return oldValue;
    }
  
    public String getNewValue() {
      return newValue;
    }
  
    public PropertyChangeType getChangeType() {
      return changeType;
    }
  
    @Override
    public String toString() {
      final StringBuilder sb = new StringBuilder("ConfigFileChangeEvent{");
      sb.append("namespace='").append(namespace).append('\'');
      sb.append(", oldValue='").append(oldValue).append('\'');
      sb.append(", newValue='").append(newValue).append('\'');
      sb.append(", changeType=").append(changeType);
      sb.append('}');
      return sb.toString();
    }
  }
  