| /* |
| * 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.lucene.queries.function.docvalues; |
| |
| import java.io.IOException; |
| |
| import org.apache.lucene.index.LeafReaderContext; |
| 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.search.Weight; |
| 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) throws IOException { |
| return (byte)doubleVal(doc); |
| } |
| |
| @Override |
| public short shortVal(int doc) throws IOException { |
| return (short)doubleVal(doc); |
| } |
| |
| @Override |
| public float floatVal(int doc) throws IOException { |
| return (float)doubleVal(doc); |
| } |
| |
| @Override |
| public int intVal(int doc) throws IOException { |
| return (int)doubleVal(doc); |
| } |
| |
| @Override |
| public long longVal(int doc) throws IOException { |
| return (long)doubleVal(doc); |
| } |
| |
| @Override |
| public boolean boolVal(int doc) throws IOException { |
| return doubleVal(doc) != 0; |
| } |
| |
| @Override |
| public abstract double doubleVal(int doc) throws IOException; |
| |
| @Override |
| public String strVal(int doc) throws IOException { |
| return Double.toString(doubleVal(doc)); |
| } |
| |
| @Override |
| public Object objectVal(int doc) throws IOException { |
| return exists(doc) ? doubleVal(doc) : null; |
| } |
| |
| @Override |
| public String toString(int doc) throws IOException { |
| return vs.description() + '=' + strVal(doc); |
| } |
| |
| @Override |
| public ValueSourceScorer getRangeScorer(Weight weight, LeafReaderContext readerContext, 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(weight, readerContext, this) { |
| @Override |
| public boolean matches(int doc) throws IOException { |
| if (!exists(doc)) return false; |
| double docVal = doubleVal(doc); |
| return docVal >= l && docVal <= u; |
| } |
| }; |
| } |
| else if (includeLower && !includeUpper) { |
| return new ValueSourceScorer(weight, readerContext, this) { |
| @Override |
| public boolean matches(int doc) throws IOException { |
| if (!exists(doc)) return false; |
| double docVal = doubleVal(doc); |
| return docVal >= l && docVal < u; |
| } |
| }; |
| } |
| else if (!includeLower && includeUpper) { |
| return new ValueSourceScorer(weight, readerContext, this) { |
| @Override |
| public boolean matches(int doc) throws IOException { |
| if (!exists(doc)) return false; |
| double docVal = doubleVal(doc); |
| return docVal > l && docVal <= u; |
| } |
| }; |
| } |
| else { |
| return new ValueSourceScorer(weight, readerContext, this) { |
| @Override |
| public boolean matches(int doc) throws IOException { |
| if (!exists(doc)) return false; |
| 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) throws IOException { |
| mval.value = doubleVal(doc); |
| mval.exists = exists(doc); |
| } |
| }; |
| } |
| |
| } |