| package org.apache.lucene.index; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.lucene.search.Query; |
| import org.apache.lucene.index.BufferedUpdatesStream.QueryAndLimit; |
| import org.apache.lucene.util.MergedIterator; |
| |
| class CoalescedUpdates { |
| final Map<Query,Integer> queries = new HashMap<Query,Integer>(); |
| final List<Iterable<Term>> iterables = new ArrayList<Iterable<Term>>(); |
| final List<NumericUpdate> numericDVUpdates = new ArrayList<NumericUpdate>(); |
| |
| @Override |
| public String toString() { |
| // note: we could add/collect more debugging information |
| return "CoalescedUpdates(termSets=" + iterables.size() + ",queries=" + queries.size() + ",numericUpdates=" + numericDVUpdates.size() + ")"; |
| } |
| |
| void update(FrozenBufferedUpdates in) { |
| iterables.add(in.termsIterable()); |
| |
| for (int queryIdx = 0; queryIdx < in.queries.length; queryIdx++) { |
| final Query query = in.queries[queryIdx]; |
| queries.put(query, BufferedUpdates.MAX_INT); |
| } |
| |
| for (NumericUpdate nu : in.updates) { |
| NumericUpdate clone = new NumericUpdate(nu.term, nu.field, nu.value); |
| clone.docIDUpto = Integer.MAX_VALUE; |
| numericDVUpdates.add(clone); |
| } |
| } |
| |
| public Iterable<Term> termsIterable() { |
| return new Iterable<Term>() { |
| @SuppressWarnings({"unchecked","rawtypes"}) |
| @Override |
| public Iterator<Term> iterator() { |
| Iterator<Term> subs[] = new Iterator[iterables.size()]; |
| for (int i = 0; i < iterables.size(); i++) { |
| subs[i] = iterables.get(i).iterator(); |
| } |
| return new MergedIterator<Term>(subs); |
| } |
| }; |
| } |
| |
| public Iterable<QueryAndLimit> queriesIterable() { |
| return new Iterable<QueryAndLimit>() { |
| |
| @Override |
| public Iterator<QueryAndLimit> iterator() { |
| return new Iterator<QueryAndLimit>() { |
| private final Iterator<Map.Entry<Query,Integer>> iter = queries.entrySet().iterator(); |
| |
| @Override |
| public boolean hasNext() { |
| return iter.hasNext(); |
| } |
| |
| @Override |
| public QueryAndLimit next() { |
| final Map.Entry<Query,Integer> ent = iter.next(); |
| return new QueryAndLimit(ent.getKey(), ent.getValue()); |
| } |
| |
| @Override |
| public void remove() { |
| throw new UnsupportedOperationException(); |
| } |
| }; |
| } |
| }; |
| } |
| } |