| /* |
| * 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.queries.function.FunctionValues; |
| import org.apache.lucene.queries.function.ValueSource; |
| import org.apache.lucene.util.mutable.MutableValue; |
| import org.apache.lucene.util.mutable.MutableValueFloat; |
| |
| /** |
| * Abstract {@link FunctionValues} implementation which supports retrieving float values. |
| * Implementations can control how the float values are loaded through {@link #floatVal(int)}} |
| */ |
| public abstract class FloatDocValues extends FunctionValues { |
| protected final ValueSource vs; |
| |
| public FloatDocValues(ValueSource vs) { |
| this.vs = vs; |
| } |
| |
| @Override |
| public byte byteVal(int doc) throws IOException { |
| return (byte)floatVal(doc); |
| } |
| |
| @Override |
| public short shortVal(int doc) throws IOException { |
| return (short)floatVal(doc); |
| } |
| |
| @Override |
| public abstract float floatVal(int doc) throws IOException; |
| |
| @Override |
| public int intVal(int doc) throws IOException { |
| return (int)floatVal(doc); |
| } |
| |
| @Override |
| public long longVal(int doc) throws IOException { |
| return (long)floatVal(doc); |
| } |
| |
| @Override |
| public boolean boolVal(int doc) throws IOException { |
| return floatVal(doc) != 0.0f; |
| } |
| |
| @Override |
| public double doubleVal(int doc) throws IOException { |
| return (double)floatVal(doc); |
| } |
| |
| @Override |
| public String strVal(int doc) throws IOException { |
| return Float.toString(floatVal(doc)); |
| } |
| |
| @Override |
| public Object objectVal(int doc) throws IOException { |
| return exists(doc) ? floatVal(doc) : null; |
| } |
| |
| @Override |
| public String toString(int doc) throws IOException { |
| return vs.description() + '=' + strVal(doc); |
| } |
| |
| @Override |
| public ValueFiller getValueFiller() { |
| return new ValueFiller() { |
| private final MutableValueFloat mval = new MutableValueFloat(); |
| |
| @Override |
| public MutableValue getValue() { |
| return mval; |
| } |
| |
| @Override |
| public void fillValue(int doc) throws IOException { |
| mval.value = floatVal(doc); |
| mval.exists = exists(doc); |
| } |
| }; |
| } |
| } |