package org.apache.lucene.queries.function.docvalues;
/*
* 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 org.apache.lucene.queries.function.FunctionValues;
import org.apache.lucene.queries.function.ValueSource;
import org.apache.lucene.queries.function.ValueSourceScorer;
import org.apache.lucene.util.mutable.MutableValue;
import org.apache.lucene.util.mutable.MutableValueDouble;
/**
* Abstract {@link FunctionValues} implementation which supports retrieving double values.
* Implementations can control how the double values are loaded through {@link #doubleVal(int)}}
*/
public abstract class DoubleDocValues extends FunctionValues {
protected final ValueSource vs;
public DoubleDocValues(ValueSource vs) {
this.vs = vs;
}
@Override
public byte byteVal(int doc) {
return (byte)doubleVal(doc);
}
@Override
public short shortVal(int doc) {
return (short)doubleVal(doc);
}
@Override
public float floatVal(int doc) {
return (float)doubleVal(doc);
}
@Override
public int intVal(int doc) {
return (int)doubleVal(doc);
}
@Override
public long longVal(int doc) {
return (long)doubleVal(doc);
}
@Override
public boolean boolVal(int doc) {
return doubleVal(doc) != 0;
}
@Override
public abstract double doubleVal(int doc);
@Override
public String strVal(int doc) {
return Double.toString(doubleVal(doc));
}
@Override
public Object objectVal(int doc) {
return exists(doc) ? doubleVal(doc) : null;
}
@Override
public String toString(int doc) {
return vs.description() + '=' + strVal(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 MutableValueDouble mval = new MutableValueDouble();
@Override
public MutableValue getValue() {
return mval;
}
@Override
public void fillValue(int doc) {
mval.value = doubleVal(doc);
mval.exists = exists(doc);
}
};
}
}