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.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 $Id:$
   */
  
  public class DoubleFieldSource extends FieldCacheSource {
    protected FieldCache.DoubleParser parser;
  
    public DoubleFieldSource(String field) {
      this(field, null);
    }
  
    public DoubleFieldSource(String field, FieldCache.DoubleParser parser) {
      super(field);
      this.parser = parser;
    }
  
    @Override
    public String description() {
      return "double(" + field + ')';
    }
  
    @Override
    public DocValues getValues(Map context, IndexReader reader) throws IOException {
      final double[] arr = (parser == null) ?
              cache.getDoubles(reader, field) :
              cache.getDoubles(reader, field, parser);
      return new DocValues() {
        @Override
        public float floatVal(int doc) {
          return (float) 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 arr[doc];
        }
  
        @Override
        public String strVal(int doc) {
          return Double.toString(arr[doc]);
        }
  
        @Override
        public String toString(int doc) {
          return description() + '=' + doubleVal(doc);
        }
  
        @Override
        public ValueSourceScorer getRangeScorer(IndexReader reader, String lowerVal, String upperVal, boolean includeLower, boolean includeUpper) {
          double lower,upper;
  
          if (lowerVal==null) {
            lower = Double.NEGATIVE_INFINITY;
          } else {
            lower = Double.parseDouble(lowerVal);
          }
  
           if (upperVal==null) {
            upper = Double.POSITIVE_INFINITY;
          } else {
            upper = Double.parseDouble(upperVal);
          }
  
          final double l = lower;
          final double u = upper;
  
  
          if (includeLower && includeUpper) {
            return new ValueSourceScorer(reader, this) {
              @Override
              public boolean matchesValue(int doc) {
                double docVal = doubleVal(doc);
                return docVal >= l && docVal <= u;
              }
            };
          }
          else if (includeLower && !includeUpper) {
            return new ValueSourceScorer(reader, this) {
              @Override
              public boolean matchesValue(int doc) {
                double docVal = doubleVal(doc);
                return docVal >= l && docVal < u;
              }
            };
          }
          else if (!includeLower && includeUpper) {
            return new ValueSourceScorer(reader, this) {
              @Override
              public boolean matchesValue(int doc) {
                double docVal = doubleVal(doc);
                return docVal > l && docVal <= u;
              }
            };
          }
          else {
            return new ValueSourceScorer(reader, this) {
              @Override
              public boolean matchesValue(int doc) {
                double docVal = doubleVal(doc);
                return docVal > l && docVal < u;
              }
            };
          }
        }
  
  
        };
  
    }
  
    @Override
    public boolean equals(Object o) {
      if (o.getClass() != DoubleFieldSource.class) return false;
      DoubleFieldSource other = (DoubleFieldSource) 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 ? Double.class.hashCode() : parser.getClass().hashCode();
      h += super.hashCode();
      return h;
    }
  
  }
  