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 org.apache.asterix.lang.common.base;
  
  import java.io.Serializable;
  
  public abstract class Literal implements Serializable {
      /**
       *
       */
      private static final long serialVersionUID = -6468144574890768345L;
  
      public enum Type {
          STRING,
          INTEGER,
          MISSING,
          NULL,
          TRUE,
          FALSE,
          FLOAT,
          DOUBLE,
          LONG
      }
  
      public abstract Object getValue();
  
      public abstract Type getLiteralType();
  
      public String getStringValue() {
          return getValue().toString();
      }
  
      @Override
      public int hashCode() {
          return getValue().hashCode();
      }
  
      @Override
      public boolean equals(Object obj) {
          if (!(obj instanceof Literal)) {
              return false;
          }
          Literal literal = (Literal) obj;
          return getValue().equals(literal.getValue());
      }
  
      @Override
      public String toString() {
          return getStringValue();
      }
  }
  