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.queries.function.FunctionValues;
import org.apache.lucene.queries.function.ValueSource;
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) {
return (byte)longVal(doc);
}
@Override
public short shortVal(int doc) {
return (short)longVal(doc);
}
@Override
public float floatVal(int doc) {
return (float)longVal(doc);
}
@Override
public int intVal(int doc) {
return (int)longVal(doc);
}
@Override
public abstract long longVal(int doc);
@Override
public double doubleVal(int doc) {
return (double)longVal(doc);
}
@Override
public boolean boolVal(int doc) {
return longVal(doc) != 0;
}
@Override
public String strVal(int doc) {
return Long.toString(longVal(doc));
}
@Override
public Object objectVal(int doc) {
return exists(doc) ? longVal(doc) : null;
}
@Override
public String toString(int doc) {
return vs.description() + '=' + strVal(doc);
}
@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) {
mval.value = longVal(doc);
mval.exists = exists(doc);
}
};
}
}