| package org.apache.lucene.codecs.asserting; |
| |
| /* |
| * 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.io.IOException; |
| import java.util.Set; |
| |
| import org.apache.lucene.codecs.StoredFieldsFormat; |
| import org.apache.lucene.codecs.StoredFieldsReader; |
| import org.apache.lucene.codecs.StoredFieldsWriter; |
| import org.apache.lucene.codecs.lucene41.Lucene41StoredFieldsFormat; |
| import org.apache.lucene.index.FieldInfo; |
| import org.apache.lucene.index.FieldInfos; |
| import org.apache.lucene.index.SegmentInfo; |
| import org.apache.lucene.index.StorableField; |
| import org.apache.lucene.index.StoredFieldVisitor; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.store.IOContext; |
| |
| /** |
| * Just like {@link Lucene41StoredFieldsFormat} but with additional asserts. |
| */ |
| public class AssertingStoredFieldsFormat extends StoredFieldsFormat { |
| private final StoredFieldsFormat in = new Lucene41StoredFieldsFormat(); |
| |
| @Override |
| public StoredFieldsReader fieldsReader(Directory directory, SegmentInfo si, FieldInfos fn, IOContext context) throws IOException { |
| return new AssertingStoredFieldsReader(in.fieldsReader(directory, si, fn, context), si.getDocCount()); |
| } |
| |
| @Override |
| public StoredFieldsWriter fieldsWriter(Directory directory, SegmentInfo si, IOContext context) throws IOException { |
| return new AssertingStoredFieldsWriter(in.fieldsWriter(directory, si, context)); |
| } |
| |
| static class AssertingStoredFieldsReader extends StoredFieldsReader { |
| private final StoredFieldsReader in; |
| private final int maxDoc; |
| |
| AssertingStoredFieldsReader(StoredFieldsReader in, int maxDoc) { |
| this.in = in; |
| this.maxDoc = maxDoc; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| in.close(); |
| } |
| |
| @Override |
| public void visitDocument(int n, StoredFieldVisitor visitor, |
| Set<String> ignoreFields) throws IOException { |
| assert n >= 0 && n < maxDoc; |
| in.visitDocument(n, visitor, ignoreFields); |
| } |
| |
| @Override |
| public StoredFieldsReader clone() { |
| return new AssertingStoredFieldsReader(in.clone(), maxDoc); |
| } |
| } |
| |
| enum Status { |
| UNDEFINED, STARTED, FINISHED; |
| } |
| |
| static class AssertingStoredFieldsWriter extends StoredFieldsWriter { |
| private final StoredFieldsWriter in; |
| private int numWritten; |
| private int fieldCount; |
| private Status docStatus; |
| |
| AssertingStoredFieldsWriter(StoredFieldsWriter in) { |
| this.in = in; |
| this.docStatus = Status.UNDEFINED; |
| } |
| |
| @Override |
| public void startDocument(int numStoredFields) throws IOException { |
| assert docStatus != Status.STARTED; |
| in.startDocument(numStoredFields); |
| assert fieldCount == 0; |
| fieldCount = numStoredFields; |
| numWritten++; |
| docStatus = Status.STARTED; |
| } |
| |
| @Override |
| public void finishDocument() throws IOException { |
| assert docStatus == Status.STARTED; |
| assert fieldCount == 0; |
| in.finishDocument(); |
| docStatus = Status.FINISHED; |
| } |
| |
| @Override |
| public void writeField(FieldInfo info, StorableField field) throws IOException { |
| assert docStatus == Status.STARTED; |
| in.writeField(info, field); |
| assert fieldCount > 0; |
| fieldCount--; |
| } |
| |
| @Override |
| public void abort() { |
| in.abort(); |
| } |
| |
| @Override |
| public void finish(FieldInfos fis, int numDocs) throws IOException { |
| assert docStatus == (numDocs > 0 ? Status.FINISHED : Status.UNDEFINED); |
| in.finish(fis, numDocs); |
| assert fieldCount == 0; |
| assert numDocs == numWritten; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| in.close(); |
| assert docStatus != Status.STARTED; |
| } |
| } |
| } |