/* * 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.ArrayList; 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.solr.analytics.value.StringValueStream.CastingStringValueStream; import org.apache.solr.schema.StrField; /** * An analytics wrapper for a multi-valued {@link StrField} with DocValues enabled. */ public class StringMultiField extends AnalyticsField implements CastingStringValueStream { private SortedSetDocValues docValues; private ArrayList<String> values; public StringMultiField(String fieldName) { super(fieldName); values = new ArrayList<>(initialArrayLength); } @Override public void doSetNextReader(LeafReaderContext context) throws IOException { docValues = DocValues.getSortedSet(context.reader(), fieldName); } @Override public void collect(int doc) throws IOException { values.clear(); if (docValues.advanceExact(doc)) { int term; while ((term = (int)docValues.nextOrd()) != SortedSetDocValues.NO_MORE_ORDS) { values.add(docValues.lookupOrd(term).utf8ToString()); } } } @Override public void streamStrings(Consumer<String> cons) { values.forEach(value -> cons.accept(value)); } @Override public void streamObjects(Consumer<Object> cons) { values.forEach(value -> cons.accept(value)); } }