| /* |
| * 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.function.field; |
| |
| import java.io.IOException; |
| import java.util.function.Consumer; |
| |
| import org.apache.lucene.index.DocValues; |
| import org.apache.lucene.index.LeafReaderContext; |
| import org.apache.lucene.index.SortedDocValues; |
| import org.apache.lucene.util.BytesRef; |
| import org.apache.solr.analytics.facet.compare.ExpressionComparator; |
| import org.apache.solr.analytics.util.function.BooleanConsumer; |
| import org.apache.solr.analytics.value.BooleanValue.CastingBooleanValue; |
| import org.apache.solr.schema.BoolField; |
| |
| /** |
| * An analytics wrapper for a single-valued {@link BoolField} with DocValues enabled. |
| */ |
| public class BooleanField extends AnalyticsField implements CastingBooleanValue { |
| private SortedDocValues docValues; |
| boolean value; |
| boolean exists; |
| int trueOrd; |
| |
| public BooleanField(String fieldName) { |
| super(fieldName); |
| } |
| |
| @Override |
| public void doSetNextReader(LeafReaderContext context) throws IOException { |
| docValues = DocValues.getSorted(context.reader(), fieldName); |
| |
| // figure out what ord maps to true |
| int numOrds = docValues.getValueCount(); |
| // if no values in the segment, default trueOrd to something other then -1 (missing) |
| int trueOrd = -2; |
| for (int i=0; i<numOrds; i++) { |
| final BytesRef br = docValues.lookupOrd(i); |
| if (br.length==1 && br.bytes[br.offset]=='T') { |
| trueOrd = i; |
| break; |
| } |
| } |
| |
| this.trueOrd = trueOrd; |
| } |
| |
| @Override |
| public void collect(int doc) throws IOException { |
| exists = docValues.advanceExact(doc); |
| if (exists) { |
| value = trueOrd == docValues.ordValue(); |
| } |
| } |
| |
| @Override |
| public boolean getBoolean() { |
| return value; |
| } |
| @Override |
| public String getString() { |
| return exists ? Boolean.toString(value) : null; |
| } |
| @Override |
| public Object getObject() { |
| return exists ? value : null; |
| } |
| @Override |
| public boolean exists() { |
| return exists; |
| } |
| |
| @Override |
| public void streamBooleans(BooleanConsumer cons) { |
| if (exists) { |
| cons.accept(value); |
| } |
| } |
| @Override |
| public void streamStrings(Consumer<String> cons) { |
| if (exists) { |
| cons.accept(Boolean.toString(value)); |
| } |
| } |
| @Override |
| public void streamObjects(Consumer<Object> cons) { |
| if (exists) { |
| cons.accept(value); |
| } |
| } |
| |
| @Override |
| public ExpressionComparator<Boolean> getObjectComparator(String expression) { |
| return new ExpressionComparator<>(expression); |
| } |
| } |