| /* |
| * 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.lucene.backward_codecs.lucene70; |
| |
| import java.io.IOException; |
| import java.util.Set; |
| import org.apache.lucene.codecs.CodecUtil; |
| import org.apache.lucene.index.IndexFileNames; |
| import org.apache.lucene.index.SegmentInfo; |
| import org.apache.lucene.search.Sort; |
| import org.apache.lucene.search.SortField; |
| import org.apache.lucene.search.SortedNumericSelector; |
| import org.apache.lucene.search.SortedNumericSortField; |
| import org.apache.lucene.search.SortedSetSelector; |
| import org.apache.lucene.search.SortedSetSortField; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.store.IOContext; |
| import org.apache.lucene.store.IndexOutput; |
| import org.apache.lucene.util.Version; |
| |
| /** Writable version of Lucene70SegmentInfoFormat for testing */ |
| public class Lucene70RWSegmentInfoFormat extends Lucene70SegmentInfoFormat { |
| |
| @Override |
| public void write(Directory dir, SegmentInfo si, IOContext ioContext) throws IOException { |
| final String fileName = |
| IndexFileNames.segmentFileName(si.name, "", Lucene70SegmentInfoFormat.SI_EXTENSION); |
| |
| try (IndexOutput output = dir.createOutput(fileName, ioContext)) { |
| // Only add the file once we've successfully created it, else IFD assert can trip: |
| si.addFile(fileName); |
| CodecUtil.writeIndexHeader( |
| output, |
| Lucene70SegmentInfoFormat.CODEC_NAME, |
| Lucene70SegmentInfoFormat.VERSION_CURRENT, |
| si.getId(), |
| ""); |
| |
| writeSegmentInfo(output, si); |
| |
| CodecUtil.writeFooter(output); |
| } |
| } |
| |
| private void writeSegmentInfo(IndexOutput output, SegmentInfo si) throws IOException { |
| Version version = si.getVersion(); |
| if (version.major < 7) { |
| throw new IllegalArgumentException( |
| "invalid major version: should be >= 7 but got: " + version.major + " segment=" + si); |
| } |
| // Write the Lucene version that created this segment, since 3.1 |
| output.writeInt(version.major); |
| output.writeInt(version.minor); |
| output.writeInt(version.bugfix); |
| |
| // Write the min Lucene version that contributed docs to the segment, since 7.0 |
| if (si.getMinVersion() != null) { |
| output.writeByte((byte) 1); |
| Version minVersion = si.getMinVersion(); |
| output.writeInt(minVersion.major); |
| output.writeInt(minVersion.minor); |
| output.writeInt(minVersion.bugfix); |
| } else { |
| output.writeByte((byte) 0); |
| } |
| |
| assert version.prerelease == 0; |
| output.writeInt(si.maxDoc()); |
| |
| output.writeByte((byte) (si.getUseCompoundFile() ? SegmentInfo.YES : SegmentInfo.NO)); |
| output.writeMapOfStrings(si.getDiagnostics()); |
| Set<String> files = si.files(); |
| for (String file : files) { |
| if (!IndexFileNames.parseSegmentName(file).equals(si.name)) { |
| throw new IllegalArgumentException( |
| "invalid files: expected segment=" + si.name + ", got=" + files); |
| } |
| } |
| output.writeSetOfStrings(files); |
| output.writeMapOfStrings(si.getAttributes()); |
| |
| Sort indexSort = si.getIndexSort(); |
| int numSortFields = indexSort == null ? 0 : indexSort.getSort().length; |
| output.writeVInt(numSortFields); |
| for (int i = 0; i < numSortFields; ++i) { |
| SortField sortField = indexSort.getSort()[i]; |
| SortField.Type sortType = sortField.getType(); |
| output.writeString(sortField.getField()); |
| int sortTypeID; |
| switch (sortField.getType()) { |
| case STRING: |
| sortTypeID = 0; |
| break; |
| case LONG: |
| sortTypeID = 1; |
| break; |
| case INT: |
| sortTypeID = 2; |
| break; |
| case DOUBLE: |
| sortTypeID = 3; |
| break; |
| case FLOAT: |
| sortTypeID = 4; |
| break; |
| case CUSTOM: |
| if (sortField instanceof SortedSetSortField) { |
| sortTypeID = 5; |
| sortType = SortField.Type.STRING; |
| } else if (sortField instanceof SortedNumericSortField) { |
| sortTypeID = 6; |
| sortType = ((SortedNumericSortField) sortField).getNumericType(); |
| } else { |
| throw new IllegalStateException("Unexpected SortedNumericSortField " + sortField); |
| } |
| break; |
| default: |
| throw new IllegalStateException("Unexpected sort type: " + sortField.getType()); |
| } |
| output.writeVInt(sortTypeID); |
| if (sortTypeID == 5) { |
| SortedSetSortField ssf = (SortedSetSortField) sortField; |
| if (ssf.getSelector() == SortedSetSelector.Type.MIN) { |
| output.writeByte((byte) 0); |
| } else if (ssf.getSelector() == SortedSetSelector.Type.MAX) { |
| output.writeByte((byte) 1); |
| } else if (ssf.getSelector() == SortedSetSelector.Type.MIDDLE_MIN) { |
| output.writeByte((byte) 2); |
| } else if (ssf.getSelector() == SortedSetSelector.Type.MIDDLE_MAX) { |
| output.writeByte((byte) 3); |
| } else { |
| throw new IllegalStateException( |
| "Unexpected SortedSetSelector type: " + ssf.getSelector()); |
| } |
| } else if (sortTypeID == 6) { |
| SortedNumericSortField snsf = (SortedNumericSortField) sortField; |
| if (snsf.getNumericType() == SortField.Type.LONG) { |
| output.writeByte((byte) 0); |
| } else if (snsf.getNumericType() == SortField.Type.INT) { |
| output.writeByte((byte) 1); |
| } else if (snsf.getNumericType() == SortField.Type.DOUBLE) { |
| output.writeByte((byte) 2); |
| } else if (snsf.getNumericType() == SortField.Type.FLOAT) { |
| output.writeByte((byte) 3); |
| } else { |
| throw new IllegalStateException( |
| "Unexpected SortedNumericSelector type: " + snsf.getNumericType()); |
| } |
| if (snsf.getSelector() == SortedNumericSelector.Type.MIN) { |
| output.writeByte((byte) 0); |
| } else if (snsf.getSelector() == SortedNumericSelector.Type.MAX) { |
| output.writeByte((byte) 1); |
| } else { |
| throw new IllegalStateException( |
| "Unexpected sorted numeric selector type: " + snsf.getSelector()); |
| } |
| } |
| output.writeByte((byte) (sortField.getReverse() ? 0 : 1)); |
| |
| // write missing value |
| Object missingValue = sortField.getMissingValue(); |
| if (missingValue == null) { |
| output.writeByte((byte) 0); |
| } else { |
| switch (sortType) { |
| case STRING: |
| if (missingValue == SortField.STRING_LAST) { |
| output.writeByte((byte) 1); |
| } else if (missingValue == SortField.STRING_FIRST) { |
| output.writeByte((byte) 2); |
| } else { |
| throw new AssertionError( |
| "unrecognized missing value for STRING field \"" |
| + sortField.getField() |
| + "\": " |
| + missingValue); |
| } |
| break; |
| case LONG: |
| output.writeByte((byte) 1); |
| output.writeLong(((Long) missingValue).longValue()); |
| break; |
| case INT: |
| output.writeByte((byte) 1); |
| output.writeInt(((Integer) missingValue).intValue()); |
| break; |
| case DOUBLE: |
| output.writeByte((byte) 1); |
| output.writeLong(Double.doubleToLongBits(((Double) missingValue).doubleValue())); |
| break; |
| case FLOAT: |
| output.writeByte((byte) 1); |
| output.writeInt(Float.floatToIntBits(((Float) missingValue).floatValue())); |
| break; |
| default: |
| throw new IllegalStateException("Unexpected sort type: " + sortField.getType()); |
| } |
| } |
| } |
| } |
| } |