/* * 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.SortedSetDocValues; import org.apache.lucene.util.BytesRef; import org.apache.solr.analytics.util.function.BooleanConsumer; import org.apache.solr.analytics.value.BooleanValueStream.CastingBooleanValueStream; import org.apache.solr.schema.BoolField; /** * An analytics wrapper for a multi-valued {@link BoolField} with DocValues enabled. */ public class BooleanMultiField extends AnalyticsField implements CastingBooleanValueStream { private SortedSetDocValues docValues; private int count; private boolean[] values; private int trueOrd; public BooleanMultiField(String fieldName) { super(fieldName); count = 0; values = new boolean[initialArrayLength]; } @Override public void doSetNextReader(LeafReaderContext context) throws IOException { docValues = DocValues.getSortedSet(context.reader(), fieldName); // figure out what ord maps to true long 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 { count = 0; if (docValues.advanceExact(doc)) { int term; while ((term = (int)docValues.nextOrd()) != SortedSetDocValues.NO_MORE_ORDS) { if (count == values.length) { resizeValues(); } values[count++] = term == trueOrd; } } } private void resizeValues() { boolean[] newValues = new boolean[values.length*2]; for (int i = 0; i < count; ++i) { newValues[i] = values[i]; } values = newValues; } @Override public void streamBooleans(BooleanConsumer cons) { for (int i = 0; i < count; ++i) { cons.accept(values[i]); } } @Override public void streamStrings(Consumer<String> cons) { streamBooleans(value -> cons.accept(Boolean.toString(value))); } @Override public void streamObjects(Consumer<Object> cons) { streamBooleans(value -> cons.accept(value)); } }