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 org.apache.solr.search.function.DocValues;
  import org.apache.lucene.search.FieldCache;
  
  import java.io.IOException;
  import java.util.Map;
  
  /**
   * Obtains float field values from the {@link org.apache.lucene.search.FieldCache}
   * using <code>getFloats()</code>
   * and makes those values available as other numeric types, casting as needed.
   *
   * @version $Id: FloatFieldSource.java 1198049 2011-11-05 20:45:10Z erick $
   */
  
  public class FloatFieldSource extends FieldCacheSource {
    protected FieldCache.FloatParser parser;
  
    public FloatFieldSource(String field) {
      this(field, null);
    }
  
    public FloatFieldSource(String field, FieldCache.FloatParser parser) {
      super(field);
      this.parser = parser;
    }
  
    @Override
    public String description() {
      return "float(" + field + ')';
    }
  
    @Override
    public DocValues getValues(Map context, IndexReader reader) throws IOException {
      final float[] arr = (parser==null) ?
              cache.getFloats(reader, field) :
              cache.getFloats(reader, field, parser);
      return new DocValues() {
        @Override
        public float floatVal(int doc) {
          return arr[doc];
        }
  
        @Override
        public int intVal(int doc) {
          return (int)arr[doc];
        }
  
        @Override
        public long longVal(int doc) {
          return (long)arr[doc];
        }
  
        @Override
        public double doubleVal(int doc) {
          return (double)arr[doc];
        }
  
        @Override
        public String strVal(int doc) {
          return Float.toString(arr[doc]);
        }
  
        @Override
        public String toString(int doc) {
          return description() + '=' + floatVal(doc);
        }
      };
    }
  
    @Override
    public boolean equals(Object o) {
      if (o.getClass() !=  FloatFieldSource.class) return false;
      FloatFieldSource other = (FloatFieldSource)o;
      return super.equals(other)
             && (this.parser==null ? other.parser==null :
                this.parser.getClass() == other.parser.getClass());
    }
  
    @Override
    public int hashCode() {
      int h = parser==null ? Float.class.hashCode() : parser.getClass().hashCode();
      h += super.hashCode();
      return h;
    }
  
  }