content: /**
   * Copyright 2010 The Apache Software Foundation
   *
   * 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 com.alibaba.wasp.jdbc.value;
  
  import com.alibaba.wasp.util.StringUtils;
  
  /**
   * Implementation of the VARCHAR_IGNORECASE data type.
   */
  public class ValueStringIgnoreCase extends ValueString {
  
      private static final ValueStringIgnoreCase EMPTY = new ValueStringIgnoreCase("");
      private int hash;
  
      protected ValueStringIgnoreCase(String value) {
          super(value);
      }
  
      public int getType() {
          return STRING_IGNORECASE;
      }
  
      protected int compareSecure(Value o, CompareMode mode) {
          ValueStringIgnoreCase v = (ValueStringIgnoreCase) o;
          return mode.compareString(value, v.value, true);
      }
  
      public boolean equals(Object other) {
          return other instanceof ValueString && value.equalsIgnoreCase(((ValueString) other).value);
      }
  
      public int hashCode() {
          if (hash == 0) {
              // this is locale sensitive
              hash = value.toUpperCase().hashCode();
          }
          return hash;
      }
  
      public String getSQL() {
          return "CAST(" + StringUtils.quoteStringSQL(value) + " AS VARCHAR_IGNORECASE)";
      }
  
      /**
       * Get or create a case insensitive string value for the given string.
       * The value will have the same case as the passed string.
       *
       * @param s the string
       * @return the value
       */
      public static ValueStringIgnoreCase get(String s) {
          if (s.length() == 0) {
              return EMPTY;
          }
          ValueStringIgnoreCase obj = new ValueStringIgnoreCase(s);
          return obj;
      }
  
      protected ValueString getNew(String s) {
          return ValueStringIgnoreCase.get(s);
      }
  
  }
  