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/**
 * 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.activemq.artemis.json.impl;

import org.apache.activemq.artemis.json.JsonArray;
import org.apache.activemq.artemis.json.JsonObject;
import org.apache.activemq.artemis.json.JsonValue;

import java.util.HashMap;
import java.util.Map;

import static org.apache.activemq.artemis.utils.Preconditions.checkNotNull;

public class JsonValueImpl implements JsonValue {

   private Map cache = new HashMap<>();

   public JsonValue wrap(javax.json.JsonValue rawValue) {
      if (rawValue == null) {
         return null;
      }

      JsonValue cacheValue = cache.get(rawValue);

      if (cacheValue != null) {
         return cacheValue;
      } else if (rawValue == javax.json.JsonValue.EMPTY_JSON_OBJECT) {
         return JsonValue.EMPTY_JSON_OBJECT;
      } else if (rawValue == javax.json.JsonValue.EMPTY_JSON_ARRAY) {
         return JsonValue.EMPTY_JSON_ARRAY;
      } else if (rawValue == javax.json.JsonValue.TRUE) {
         return JsonValue.TRUE;
      } else if (rawValue == javax.json.JsonValue.FALSE) {
         return JsonValue.FALSE;
      } else if (rawValue == javax.json.JsonValue.NULL) {
         return JsonValue.NULL;
      } else if (rawValue.getValueType() == javax.json.JsonValue.ValueType.ARRAY) {
         cacheValue = new JsonArrayImpl((javax.json.JsonArray) rawValue);
      } else if (rawValue.getValueType() == javax.json.JsonValue.ValueType.OBJECT) {
         cacheValue = new JsonObjectImpl((javax.json.JsonObject) rawValue);
      } else if (rawValue.getValueType() == javax.json.JsonValue.ValueType.STRING) {
         cacheValue = new JsonStringImpl((javax.json.JsonString) rawValue);
      } else if (rawValue.getValueType() == javax.json.JsonValue.ValueType.NUMBER) {
         cacheValue = new JsonNumberImpl((javax.json.JsonNumber) rawValue);
      } else if (rawValue.getValueType() == javax.json.JsonValue.ValueType.TRUE) {
         cacheValue = new JsonValueImpl(rawValue);
      } else if (rawValue.getValueType() == javax.json.JsonValue.ValueType.FALSE) {
         cacheValue = new JsonValueImpl(rawValue);
      } else if (rawValue.getValueType() == javax.json.JsonValue.ValueType.NULL) {
         cacheValue = new JsonValueImpl(rawValue);
      } else {
         throw new IllegalStateException("Unexpected value: " + rawValue.getValueType());
      }

      cache.put(rawValue, cacheValue);

      return cacheValue;
   }

   private final javax.json.JsonValue rawValue;

   public javax.json.JsonValue getRawValue() {
      return rawValue;
   }

   public JsonValueImpl(javax.json.JsonValue rawValue) {
      checkNotNull(rawValue);
      this.rawValue = rawValue;
   }


   @Override
   public JsonValue.ValueType getValueType() {
      return ValueType.valueOf(rawValue.getValueType().name());
   }

   @Override
   public JsonObject asJsonObject() {
      return JsonValue.super.asJsonObject();
   }

   @Override
   public JsonArray asJsonArray() {
      return JsonValue.super.asJsonArray();
   }

   @Override
   public String toString() {
      return rawValue.toString();
   }

   @Override
   public boolean equals(Object obj) {
      if (obj instanceof JsonValueImpl) {
         return rawValue.equals(((JsonValueImpl)obj).getRawValue());
      }
      return super.equals(obj);
   }

   @Override
   public int hashCode() {
      return rawValue.hashCode();
   }
}