| /* |
| * 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.MutableValueLong; |
| |
| /** |
| * Abstract {@link FunctionValues} implementation which supports retrieving long values. |
| * Implementations can control how the long values are loaded through {@link #longVal(int)}} |
| */ |
| public abstract class LongDocValues extends FunctionValues { |
| protected final ValueSource vs; |
| |
| public LongDocValues(ValueSource vs) { |
| this.vs = vs; |
| } |
| |
| @Override |
| public byte byteVal(int doc) throws IOException { |
| return (byte)longVal(doc); |
| } |
| |
| @Override |
| public short shortVal(int doc) throws IOException { |
| return (short)longVal(doc); |
| } |
| |
| @Override |
| public float floatVal(int doc) throws IOException { |
| return (float)longVal(doc); |
| } |
| |
| @Override |
| public int intVal(int doc) throws IOException { |
| return (int)longVal(doc); |
| } |
| |
| @Override |
| public abstract long longVal(int doc) throws IOException; |
| |
| @Override |
| public double doubleVal(int doc) throws IOException { |
| return (double)longVal(doc); |
| } |
| |
| @Override |
| public boolean boolVal(int doc) throws IOException { |
| return longVal(doc) != 0; |
| } |
| |
| @Override |
| public String strVal(int doc) throws IOException { |
| return Long.toString(longVal(doc)); |
| } |
| |
| @Override |
| public Object objectVal(int doc) throws IOException { |
| return exists(doc) ? longVal(doc) : null; |
| } |
| |
| @Override |
| public String toString(int doc) throws IOException { |
| return vs.description() + '=' + strVal(doc); |
| } |
| |
| protected long externalToLong(String extVal) { |
| return Long.parseLong(extVal); |
| } |
| |
| @Override |
| public ValueSourceScorer getRangeScorer(Weight weight, LeafReaderContext readerContext, String lowerVal, String upperVal, boolean includeLower, boolean includeUpper) { |
| long lower,upper; |
| |
| // instead of using separate comparison functions, adjust the endpoints. |
| |
| if (lowerVal==null) { |
| lower = Long.MIN_VALUE; |
| } else { |
| lower = externalToLong(lowerVal); |
| if (!includeLower && lower < Long.MAX_VALUE) lower++; |
| } |
| |
| if (upperVal==null) { |
| upper = Long.MAX_VALUE; |
| } else { |
| upper = externalToLong(upperVal); |
| if (!includeUpper && upper > Long.MIN_VALUE) upper--; |
| } |
| |
| final long ll = lower; |
| final long uu = upper; |
| |
| return new ValueSourceScorer(weight, readerContext, this) { |
| @Override |
| public boolean matches(int doc) throws IOException { |
| if (!exists(doc)) return false; |
| long val = longVal(doc); |
| return val >= ll && val <= uu; |
| } |
| }; |
| } |
| |
| @Override |
| public ValueFiller getValueFiller() { |
| return new ValueFiller() { |
| private final MutableValueLong mval = new MutableValueLong(); |
| |
| @Override |
| public MutableValue getValue() { |
| return mval; |
| } |
| |
| @Override |
| public void fillValue(int doc) throws IOException { |
| mval.value = longVal(doc); |
| mval.exists = exists(doc); |
| } |
| }; |
| } |
| } |