| /* |
| * 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.solr.analytics.util.valuesource; |
| |
| import java.io.IOException; |
| import java.util.Map; |
| |
| import org.apache.lucene.index.AtomicReaderContext; |
| import org.apache.lucene.queries.function.FunctionValues; |
| import org.apache.lucene.queries.function.docvalues.DoubleDocValues; |
| import org.apache.lucene.queries.function.valuesource.ConstNumberSource; |
| import org.apache.lucene.queries.function.valuesource.ConstValueSource; |
| import org.apache.solr.analytics.util.AnalyticsParams; |
| |
| /** |
| * <code>ConstDoubleSource</code> returns a constant double for all documents |
| */ |
| public class ConstDoubleSource extends ConstNumberSource { |
| public final static String NAME = AnalyticsParams.CONSTANT_NUMBER; |
| final double constant; |
| |
| public ConstDoubleSource(double constant) { |
| this.constant = constant; |
| } |
| |
| @Override |
| public String description() { |
| return name()+"(" + getFloat() + ")"; |
| } |
| |
| protected String name() { |
| return NAME; |
| } |
| |
| @Override |
| public FunctionValues getValues(Map context, AtomicReaderContext readerContext) throws IOException { |
| return new DoubleDocValues(this) { |
| @Override |
| public double doubleVal(int doc) { |
| return constant; |
| } |
| @Override |
| public boolean exists(int doc) { |
| return true; |
| } |
| }; |
| } |
| |
| @Override |
| public int hashCode() { |
| return (int)Double.doubleToLongBits(constant) * 31; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (!(o instanceof ConstValueSource)) return false; |
| ConstDoubleSource other = (ConstDoubleSource)o; |
| return this.constant == other.constant; |
| } |
| |
| @Override |
| public int getInt() { |
| return (int)constant; |
| } |
| |
| @Override |
| public long getLong() { |
| return (long)constant; |
| } |
| |
| @Override |
| public float getFloat() { |
| return (float)constant; |
| } |
| |
| @Override |
| public double getDouble() { |
| return constant; |
| } |
| |
| @Override |
| public Number getNumber() { |
| return new Double(constant); |
| } |
| |
| @Override |
| public boolean getBool() { |
| return constant != 0.0f; |
| } |
| |
| } |