Examples with SegmentInfo org.apache.lucene.index.SegmentInfo used on opensource projects

Example 6 with SegmentInfo

use of org.apache.lucene.index.SegmentInfo in project lucene-solr by apache.

the class SimpleTextSegmentInfoFormat method read.

@Override
public SegmentInfo read(Directory directory, String segmentName, byte[] segmentID, IOContext context) throws IOException {
    BytesRefBuilder scratch = new BytesRefBuilder();
    String segFileName = IndexFileNames.segmentFileName(segmentName, "", SimpleTextSegmentInfoFormat.SI_EXTENSION);
    try (ChecksumIndexInput input = directory.openChecksumInput(segFileName, context)) {
        SimpleTextUtil.readLine(input, scratch);
        assert StringHelper.startsWith(scratch.get(), SI_VERSION);
        final Version version;
        try {
            version = Version.parse(readString(SI_VERSION.length, scratch));
        } catch (ParseException pe) {
            throw new CorruptIndexException("unable to parse version string: " + pe.getMessage(), input, pe);
        }
        SimpleTextUtil.readLine(input, scratch);
        assert StringHelper.startsWith(scratch.get(), SI_MIN_VERSION);
        Version minVersion;
        try {
            String versionString = readString(SI_MIN_VERSION.length, scratch);
            if (versionString.equals("null")) {
                minVersion = null;
            } else {
                minVersion = Version.parse(versionString);
            }
        } catch (ParseException pe) {
            throw new CorruptIndexException("unable to parse version string: " + pe.getMessage(), input, pe);
        }
        SimpleTextUtil.readLine(input, scratch);
        assert StringHelper.startsWith(scratch.get(), SI_DOCCOUNT);
        final int docCount = Integer.parseInt(readString(SI_DOCCOUNT.length, scratch));
        SimpleTextUtil.readLine(input, scratch);
        assert StringHelper.startsWith(scratch.get(), SI_USECOMPOUND);
        final boolean isCompoundFile = Boolean.parseBoolean(readString(SI_USECOMPOUND.length, scratch));
        SimpleTextUtil.readLine(input, scratch);
        assert StringHelper.startsWith(scratch.get(), SI_NUM_DIAG);
        int numDiag = Integer.parseInt(readString(SI_NUM_DIAG.length, scratch));
        Map<String, String> diagnostics = new HashMap<>();
        for (int i = 0; i < numDiag; i++) {
            SimpleTextUtil.readLine(input, scratch);
            assert StringHelper.startsWith(scratch.get(), SI_DIAG_KEY);
            String key = readString(SI_DIAG_KEY.length, scratch);
            SimpleTextUtil.readLine(input, scratch);
            assert StringHelper.startsWith(scratch.get(), SI_DIAG_VALUE);
            String value = readString(SI_DIAG_VALUE.length, scratch);
            diagnostics.put(key, value);
        }
        SimpleTextUtil.readLine(input, scratch);
        assert StringHelper.startsWith(scratch.get(), SI_NUM_ATT);
        int numAtt = Integer.parseInt(readString(SI_NUM_ATT.length, scratch));
        Map<String, String> attributes = new HashMap<>(numAtt);
        for (int i = 0; i < numAtt; i++) {
            SimpleTextUtil.readLine(input, scratch);
            assert StringHelper.startsWith(scratch.get(), SI_ATT_KEY);
            String key = readString(SI_ATT_KEY.length, scratch);
            SimpleTextUtil.readLine(input, scratch);
            assert StringHelper.startsWith(scratch.get(), SI_ATT_VALUE);
            String value = readString(SI_ATT_VALUE.length, scratch);
            attributes.put(key, value);
        }
        SimpleTextUtil.readLine(input, scratch);
        assert StringHelper.startsWith(scratch.get(), SI_NUM_FILES);
        int numFiles = Integer.parseInt(readString(SI_NUM_FILES.length, scratch));
        Set<String> files = new HashSet<>();
        for (int i = 0; i < numFiles; i++) {
            SimpleTextUtil.readLine(input, scratch);
            assert StringHelper.startsWith(scratch.get(), SI_FILE);
            String fileName = readString(SI_FILE.length, scratch);
            files.add(fileName);
        }
        SimpleTextUtil.readLine(input, scratch);
        assert StringHelper.startsWith(scratch.get(), SI_ID);
        final byte[] id = Arrays.copyOfRange(scratch.bytes(), SI_ID.length, scratch.length());
        if (!Arrays.equals(segmentID, id)) {
            throw new CorruptIndexException("file mismatch, expected: " + StringHelper.idToString(segmentID) + ", got: " + StringHelper.idToString(id), input);
        }
        SimpleTextUtil.readLine(input, scratch);
        assert StringHelper.startsWith(scratch.get(), SI_SORT);
        final int numSortFields = Integer.parseInt(readString(SI_SORT.length, scratch));
        SortField[] sortField = new SortField[numSortFields];
        for (int i = 0; i < numSortFields; ++i) {
            SimpleTextUtil.readLine(input, scratch);
            assert StringHelper.startsWith(scratch.get(), SI_SORT_FIELD);
            final String field = readString(SI_SORT_FIELD.length, scratch);
            SimpleTextUtil.readLine(input, scratch);
            assert StringHelper.startsWith(scratch.get(), SI_SORT_TYPE);
            final String typeAsString = readString(SI_SORT_TYPE.length, scratch);
            final SortField.Type type;
            SortedSetSelector.Type selectorSet = null;
            SortedNumericSelector.Type selectorNumeric = null;
            switch(typeAsString) {
                case "string":
                    type = SortField.Type.STRING;
                    break;
                case "long":
                    type = SortField.Type.LONG;
                    break;
                case "int":
                    type = SortField.Type.INT;
                    break;
                case "double":
                    type = SortField.Type.DOUBLE;
                    break;
                case "float":
                    type = SortField.Type.FLOAT;
                    break;
                case "multi_valued_string":
                    type = SortField.Type.STRING;
                    selectorSet = readSetSelector(input, scratch);
                    break;
                case "multi_valued_long":
                    type = SortField.Type.LONG;
                    selectorNumeric = readNumericSelector(input, scratch);
                    break;
                case "multi_valued_int":
                    type = SortField.Type.INT;
                    selectorNumeric = readNumericSelector(input, scratch);
                    break;
                case "multi_valued_double":
                    type = SortField.Type.DOUBLE;
                    selectorNumeric = readNumericSelector(input, scratch);
                    break;
                case "multi_valued_float":
                    type = SortField.Type.FLOAT;
                    selectorNumeric = readNumericSelector(input, scratch);
                    break;
                default:
                    throw new CorruptIndexException("unable to parse sort type string: " + typeAsString, input);
            }
            SimpleTextUtil.readLine(input, scratch);
            assert StringHelper.startsWith(scratch.get(), SI_SORT_REVERSE);
            final boolean reverse = Boolean.parseBoolean(readString(SI_SORT_REVERSE.length, scratch));
            SimpleTextUtil.readLine(input, scratch);
            assert StringHelper.startsWith(scratch.get(), SI_SORT_MISSING);
            final String missingLastAsString = readString(SI_SORT_MISSING.length, scratch);
            final Object missingValue;
            switch(type) {
                case STRING:
                    switch(missingLastAsString) {
                        case "null":
                            missingValue = null;
                            break;
                        case "first":
                            missingValue = SortField.STRING_FIRST;
                            break;
                        case "last":
                            missingValue = SortField.STRING_LAST;
                            break;
                        default:
                            throw new CorruptIndexException("unable to parse missing string: " + typeAsString, input);
                    }
                    break;
                case LONG:
                    switch(missingLastAsString) {
                        case "null":
                            missingValue = null;
                            break;
                        default:
                            missingValue = Long.parseLong(missingLastAsString);
                            break;
                    }
                    break;
                case INT:
                    switch(missingLastAsString) {
                        case "null":
                            missingValue = null;
                            break;
                        default:
                            missingValue = Integer.parseInt(missingLastAsString);
                            break;
                    }
                    break;
                case DOUBLE:
                    switch(missingLastAsString) {
                        case "null":
                            missingValue = null;
                            break;
                        default:
                            missingValue = Double.parseDouble(missingLastAsString);
                            break;
                    }
                    break;
                case FLOAT:
                    switch(missingLastAsString) {
                        case "null":
                            missingValue = null;
                            break;
                        default:
                            missingValue = Float.parseFloat(missingLastAsString);
                            break;
                    }
                    break;
                default:
                    throw new AssertionError();
            }
            if (selectorSet != null) {
                sortField[i] = new SortedSetSortField(field, reverse);
            } else if (selectorNumeric != null) {
                sortField[i] = new SortedNumericSortField(field, type, reverse);
            } else {
                sortField[i] = new SortField(field, type, reverse);
            }
            if (missingValue != null) {
                sortField[i].setMissingValue(missingValue);
            }
        }
        Sort indexSort = sortField.length == 0 ? null : new Sort(sortField);
        SimpleTextUtil.checkFooter(input);
        SegmentInfo info = new SegmentInfo(directory, version, minVersion, segmentName, docCount, isCompoundFile, null, Collections.unmodifiableMap(diagnostics), id, Collections.unmodifiableMap(attributes), indexSort);
        info.setFiles(files);
        return info;
    }
}

Example 7 with SegmentInfo

use of org.apache.lucene.index.SegmentInfo in project lucene-solr by apache.

the class Lucene50RWSegmentInfoFormat method read.

@Override
public SegmentInfo read(Directory dir, String segment, byte[] segmentID, IOContext context) throws IOException {
    final String fileName = IndexFileNames.segmentFileName(segment, "", Lucene50SegmentInfoFormat.SI_EXTENSION);
    try (ChecksumIndexInput input = dir.openChecksumInput(fileName, context)) {
        Throwable priorE = null;
        SegmentInfo si = null;
        try {
            CodecUtil.checkIndexHeader(input, Lucene50SegmentInfoFormat.CODEC_NAME, Lucene50SegmentInfoFormat.VERSION_START, Lucene50SegmentInfoFormat.VERSION_CURRENT, segmentID, "");
            final Version version = Version.fromBits(input.readInt(), input.readInt(), input.readInt());
            final int docCount = input.readInt();
            if (docCount < 0) {
                throw new CorruptIndexException("invalid docCount: " + docCount, input);
            }
            final boolean isCompoundFile = input.readByte() == SegmentInfo.YES;
            final Map<String, String> diagnostics = input.readMapOfStrings();
            final Set<String> files = input.readSetOfStrings();
            final Map<String, String> attributes = input.readMapOfStrings();
            si = new SegmentInfo(dir, version, null, segment, docCount, isCompoundFile, null, diagnostics, segmentID, attributes, null);
            si.setFiles(files);
        } catch (Throwable exception) {
            priorE = exception;
        } finally {
            CodecUtil.checkFooter(input, priorE);
        }
        return si;
    }
}