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.MutableValueInt;
/**
* Abstract {@link FunctionValues} implementation which supports retrieving int values.
* Implementations can control how the int values are loaded through {@link #intVal(int)}
*/
public abstract class IntDocValues extends FunctionValues {
protected final ValueSource vs;
public IntDocValues(ValueSource vs) {
this.vs = vs;
}
@Override
public byte byteVal(int doc) {
return (byte)intVal(doc);
}
@Override
public short shortVal(int doc) {
return (short)intVal(doc);
}
@Override
public float floatVal(int doc) {
return (float)intVal(doc);
}
@Override
public abstract int intVal(int doc);
@Override
public long longVal(int doc) {
return (long)intVal(doc);
}
@Override
public double doubleVal(int doc) {
return (double)intVal(doc);
}
@Override
public String strVal(int doc) {
return Integer.toString(intVal(doc));
}
@Override
public Object objectVal(int doc) {
return exists(doc) ? intVal(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) {
int lower,upper;
// instead of using separate comparison functions, adjust the endpoints.
if (lowerVal==null) {
lower = Integer.MIN_VALUE;
} else {
lower = Integer.parseInt(lowerVal);
if (!includeLower && lower < Integer.MAX_VALUE) lower++;
}
if (upperVal==null) {
upper = Integer.MAX_VALUE;
} else {
upper = Integer.parseInt(upperVal);
if (!includeUpper && upper > Integer.MIN_VALUE) upper--;
}
final int ll = lower;
final int uu = upper;
return new ValueSourceScorer(reader, this) {
@Override
public boolean matchesValue(int doc) {
int val = intVal(doc);
// only check for deleted if it's the default value
// if (val==0 && reader.isDeleted(doc)) return false;
return val >= ll && val <= uu;
}
};
}
@Override
public ValueFiller getValueFiller() {
return new ValueFiller() {
private final MutableValueInt mval = new MutableValueInt();
@Override
public MutableValue getValue() {
return mval;
}
@Override
public void fillValue(int doc) {
mval.value = intVal(doc);
mval.exists = exists(doc);
}
};
}
}