content: package org.apache.solr.search.function;
  /**
   * 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.
   */
  
  import org.apache.lucene.index.IndexReader;
  
  import java.util.Map;
  import java.io.IOException;
  
  
  /**
   * Pass a the field value through as a String, no matter the type
   *
   **/
  public class LiteralValueSource extends ValueSource {
    protected final String string;
    public LiteralValueSource(String string) {
      this.string = string;
    }
  
    /** returns the literal value */
    public String getValue() {
      return string;
    }
  
    @Override
    public DocValues getValues(Map context, IndexReader reader) throws IOException {
  
      return new DocValues() {
        @Override
        public String strVal(int doc) {
          return string;
        }
  
        @Override
        public String toString(int doc) {
          return string;
        }
      };
    }
  
    @Override
    public String description() {
      return "literal(" + string + ")";
    }
  
    @Override
    public boolean equals(Object o) {
      if (this == o) return true;
      if (!(o instanceof LiteralValueSource)) return false;
  
      LiteralValueSource that = (LiteralValueSource) o;
  
      if (!string.equals(that.string)) return false;
  
      return true;
    }
  
    public static final int hash = LiteralValueSource.class.hashCode();
    @Override
    public int hashCode() {
      return hash + string.hashCode();
    }
  }
  