private void AddFieldLazy(Document.Document doc, FieldInfo fi, bool binary, bool compressed, bool tokenize)
{
if (binary)
{
int toRead = fieldsStream.ReadVInt();
long pointer = fieldsStream.FilePointer;
//was: doc.add(new Fieldable(fi.name, b, Fieldable.Store.YES));
doc.Add(new LazyField(this, fi.name, Field.Store.YES, toRead, pointer, binary, compressed));
//Need to move the pointer ahead by toRead positions
fieldsStream.Seek(pointer + toRead);
}
else
{
const Field.Store store = Field.Store.YES;
Field.Index index = FieldExtensions.ToIndex(fi.isIndexed, tokenize);
Field.TermVector termVector = FieldExtensions.ToTermVector(fi.storeTermVector, fi.storeOffsetWithTermVector, fi.storePositionWithTermVector);
AbstractField f;
if (compressed)
{
int toRead = fieldsStream.ReadVInt();
long pointer = fieldsStream.FilePointer;
f = new LazyField(this, fi.name, store, toRead, pointer, binary, compressed);
//skip over the part that we aren't loading
fieldsStream.Seek(pointer + toRead);
f.OmitNorms = fi.omitNorms;
f.OmitTermFreqAndPositions = fi.omitTermFreqAndPositions;
}
else
{
int length = fieldsStream.ReadVInt();
long pointer = fieldsStream.FilePointer;
//Skip ahead of where we are by the length of what is stored
if (format >= FieldsWriter.FORMAT_VERSION_UTF8_LENGTH_IN_BYTES)
{
fieldsStream.Seek(pointer + length);
}
else
{
fieldsStream.SkipChars(length);
}
f = new LazyField(this, fi.name, store, index, termVector, length, pointer, binary, compressed)
{
OmitNorms = fi.omitNorms, OmitTermFreqAndPositions = fi.omitTermFreqAndPositions
};
}
doc.Add(f);
}
}
// append fields from storedFieldReaders
public override Document.Document Document(int n, FieldSelector fieldSelector)
{
EnsureOpen();
Document.Document result = new Document.Document();
foreach (IndexReader reader in storedFieldReaders)
{
bool include = (fieldSelector == null);
if (!include)
{
var fields = readerToFields[reader];
foreach (var field in fields)
{
if (fieldSelector.Accept(field) != FieldSelectorResult.NO_LOAD)
{
include = true;
break;
}
}
}
if (include)
{
var fields = reader.Document(n, fieldSelector).GetFields();
foreach (var field in fields)
{
result.Add(field);
}
}
}
return(result);
}
// Add the size of field as a byte[] containing the 4 bytes of the integer byte size (high order byte first; char = 2 bytes)
// Read just the size -- caller must skip the field content to continue reading fields
// Return the size in bytes or chars, depending on field type
private int AddFieldSize(Document.Document doc, FieldInfo fi, bool binary, bool compressed)
{
int size = fieldsStream.ReadVInt(), bytesize = binary || compressed?size:2 * size;
var sizebytes = new byte[4];
sizebytes[0] = (byte)(Number.URShift(bytesize, 24));
sizebytes[1] = (byte)(Number.URShift(bytesize, 16));
sizebytes[2] = (byte)(Number.URShift(bytesize, 8));
sizebytes[3] = (byte)bytesize;
doc.Add(new Field(fi.name, sizebytes, Field.Store.YES));
return(size);
}
private void AddField(Document.Document doc, FieldInfo fi, bool binary, bool compressed, bool tokenize)
{
//we have a binary stored field, and it may be compressed
if (binary)
{
int toRead = fieldsStream.ReadVInt();
var b = new byte[toRead];
fieldsStream.ReadBytes(b, 0, b.Length);
doc.Add(compressed ? new Field(fi.name, Uncompress(b), Field.Store.YES) : new Field(fi.name, b, Field.Store.YES));
}
else
{
const Field.Store store = Field.Store.YES;
Field.Index index = FieldExtensions.ToIndex(fi.isIndexed, tokenize);
Field.TermVector termVector = FieldExtensions.ToTermVector(fi.storeTermVector, fi.storeOffsetWithTermVector, fi.storePositionWithTermVector);
AbstractField f;
if (compressed)
{
int toRead = fieldsStream.ReadVInt();
var b = new byte[toRead];
fieldsStream.ReadBytes(b, 0, b.Length);
f = new Field(fi.name, false, System.Text.Encoding.GetEncoding("UTF-8").GetString(Uncompress(b)), store, index,
termVector)
{
OmitTermFreqAndPositions = fi.omitTermFreqAndPositions, OmitNorms = fi.omitNorms
};
}
else
{
f = new Field(fi.name, false, fieldsStream.ReadString(), store, index, termVector)
{
OmitTermFreqAndPositions = fi.omitTermFreqAndPositions, OmitNorms = fi.omitNorms
};
}
doc.Add(f);
}
}
// append fields from storedFieldReaders
public override Document.Document Document(int n, FieldSelector fieldSelector)
{
EnsureOpen();
Document.Document result = new Document.Document();
foreach(IndexReader reader in storedFieldReaders)
{
bool include = (fieldSelector == null);
if (!include)
{
var fields = readerToFields[reader];
foreach(var field in fields)
{
if (fieldSelector.Accept(field) != FieldSelectorResult.NO_LOAD)
{
include = true;
break;
}
}
}
if (include)
{
var fields = reader.Document(n, fieldSelector).GetFields();
foreach(var field in fields)
{
result.Add(field);
}
}
}
return result;
}
