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.solr.search.function;
  
  import org.apache.lucene.index.IndexReader;
  
  import java.io.IOException;
  import java.util.Map;
  
  /**
   * <code>ConstValueSource</code> returns a constant for all documents
   */
  public class ConstValueSource extends ConstNumberSource {
    final float constant;
    private final double dv;
  
    public ConstValueSource(float constant) {
      this.constant = constant;
      this.dv = constant;
    }
  
    @Override
    public String description() {
      return "const(" + constant + ")";
    }
  
    @Override
    public DocValues getValues(Map context, IndexReader reader) throws IOException {
      return new DocValues() {
        @Override
        public float floatVal(int doc) {
          return constant;
        }
        @Override
        public int intVal(int doc) {
          return (int)constant;
        }
        @Override
        public long longVal(int doc) {
          return (long)constant;
        }
        @Override
        public double doubleVal(int doc) {
          return dv;
        }
        @Override
        public String strVal(int doc) {
          return Float.toString(constant);
        }
        @Override
        public String toString(int doc) {
          return description();
        }
      };
    }
  
    @Override
    public int hashCode() {
      return Float.floatToIntBits(constant) * 31;
    }
  
    @Override
    public boolean equals(Object o) {
      if (!(o instanceof ConstValueSource)) return false;
      ConstValueSource other = (ConstValueSource)o;
      return  this.constant == other.constant;
    }
  
    @Override
    public int getInt() {
      return (int)constant;
    }
  
    @Override
    public long getLong() {
      return (long)constant;
    }
  
    @Override
    public float getFloat() {
      return constant;
    }
  
    @Override
    public double getDouble() {
      return dv;
    }
  
    @Override
    public Number getNumber() {
      return constant;
    }
  }
  