/**
* 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 org.apache.solr.search.MutableValue;
import org.apache.solr.search.MutableValueDouble;
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;
}
public String description() {
return "double(" + field + ')';
}
public DocValues getValues(Map context, IndexReader reader) throws IOException {
final double[] arr = (parser == null) ?
((FieldCache) cache).getDoubles(reader, field) :
((FieldCache) cache).getDoubles(reader, field, parser);
return new DocValues() {
public float floatVal(int doc) {
return (float) arr[doc];
}
public int intVal(int doc) {
return (int) arr[doc];
}
public long longVal(int doc) {
return (long) arr[doc];
}
public double doubleVal(int doc) {
return arr[doc];
}
public String strVal(int doc) {
return Double.toString(arr[doc]);
}
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 ValueFiller getValueFiller() {
return new ValueFiller() {
private final double[] doubleArr = arr;
private final MutableValueDouble mval = new MutableValueDouble();
@Override
public MutableValue getValue() {
return mval;
}
@Override
public void fillValue(int doc) {
mval.value = doubleArr[doc];
}
};
}
};
}
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();
}
public int hashCode() {
int h = parser == null ? Double.class.hashCode() : parser.getClass().hashCode();
h += super.hashCode();
return h;
}
}