if (format < PreFlexRWFieldInfosWriter.FORMAT_CURRENT && format != PreFlexRWFieldInfosWriter.FORMAT_PREFLEX_RW) {
throw new IndexFormatTooNewException(input, format, FORMAT_MINIMUM, PreFlexRWFieldInfosWriter.FORMAT_CURRENT);
}
final int size = input.readVInt(); //read in the size
FieldInfo infos[] = new FieldInfo[size];
for (int i = 0; i < size; i++) {
String name = input.readString();
final int fieldNumber = format == PreFlexRWFieldInfosWriter.FORMAT_PREFLEX_RW ? input.readInt() : i;
byte bits = input.readByte();
boolean isIndexed = (bits & PreFlexRWFieldInfosWriter.IS_INDEXED) != 0;
boolean storeTermVector = (bits & PreFlexRWFieldInfosWriter.STORE_TERMVECTOR) != 0;
boolean omitNorms = (bits & PreFlexRWFieldInfosWriter.OMIT_NORMS) != 0;
boolean storePayloads = (bits & PreFlexRWFieldInfosWriter.STORE_PAYLOADS) != 0;
final IndexOptions indexOptions;
if (!isIndexed) {
indexOptions = null;
} else if ((bits & PreFlexRWFieldInfosWriter.OMIT_TERM_FREQ_AND_POSITIONS) != 0) {
indexOptions = IndexOptions.DOCS_ONLY;
} else if ((bits & PreFlexRWFieldInfosWriter.OMIT_POSITIONS) != 0) {
if (format <= PreFlexRWFieldInfosWriter.FORMAT_OMIT_POSITIONS) {
indexOptions = IndexOptions.DOCS_AND_FREQS;
} else {
throw new CorruptIndexException("Corrupt fieldinfos, OMIT_POSITIONS set but format=" + format + " (resource: " + input + ")");
}
} else {
indexOptions = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS;
}
// LUCENE-3027: past indices were able to write
// storePayloads=true when omitTFAP is also true,
// which is invalid. We correct that, here:
if (indexOptions != IndexOptions.DOCS_AND_FREQS_AND_POSITIONS) {
storePayloads = false;
}
DocValuesType normType = isIndexed && !omitNorms ? DocValuesType.NUMERIC : null;
if (format == PreFlexRWFieldInfosWriter.FORMAT_PREFLEX_RW && normType != null) {
// RW can have norms but doesn't write them
normType = input.readByte() != 0 ? DocValuesType.NUMERIC : null;
}
infos[i] = new FieldInfo(name, isIndexed, fieldNumber, storeTermVector,
omitNorms, storePayloads, indexOptions, null, normType, -1, null);
}
if (input.getFilePointer() != input.length()) {
throw new CorruptIndexException("did not read all bytes from file \"" + fileName + "\": read " + input.getFilePointer() + " vs size " + input.length() + " (resource: " + input + ")");