/*
    * 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.logging.log4j.core.jackson;
  
  import org.apache.logging.log4j.util.Strings;
  
  import com.fasterxml.jackson.annotation.JsonCreator;
  import com.fasterxml.jackson.annotation.JsonProperty;
  import com.fasterxml.jackson.annotation.JsonPropertyOrder;
  import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
  
  /**
   * <p>
   * <em>Consider this class private.</em>
   * </p>
   * <p>
   * Used to represent map entries in a generic fashion because the default Jackson behavior uses the key as the element tag. Using the key as
   * an element/property name would mean that you cannot have a generic JSON/XML schema for all log event.
   * </p>
   */
  @JsonPropertyOrder({ "key", "value" })
  final class MapEntry {
  
      @JsonProperty
      @JacksonXmlProperty(isAttribute = true)
      private String key;
  
      @JsonProperty
      @JacksonXmlProperty(isAttribute = true)
      private String value;
  
      @JsonCreator
      public MapEntry(@JsonProperty("key") final String key, @JsonProperty("value") final String value) {
          this.setKey(key);
          this.setValue(value);
      }
  
      @Override
      public boolean equals(final Object obj) {
          if (this == obj) {
              return true;
          }
          if (obj == null) {
              return false;
          }
          if (!(obj instanceof MapEntry)) {
              return false;
          }
          final MapEntry other = (MapEntry) obj;
          if (this.getKey() == null) {
              if (other.getKey() != null) {
                  return false;
              }
          } else if (!this.getKey().equals(other.getKey())) {
              return false;
          }
          if (this.getValue() == null) {
              if (other.getValue() != null) {
                  return false;
              }
          } else if (!this.getValue().equals(other.getValue())) {
              return false;
          }
          return true;
      }
  
      public String getKey() {
          return this.key;
      }
  
      public String getValue() {
          return this.value;
      }
  
      @Override
      public int hashCode() {
          final int prime = 31;
          int result = 1;
          result = prime * result + ((this.getKey() == null) ? 0 : this.getKey().hashCode());
          result = prime * result + ((this.getValue() == null) ? 0 : this.getValue().hashCode());
          return result;
      }
  
      public void setKey(final String key) {
          this.key = key;
     }
 
     public void setValue(final String value) {
         this.value = value;
     }
 
     @Override
     public String toString() {
         return Strings.EMPTY + this.getKey() + "=" + this.getValue();
     }
 }