/// <summary>Adds field info for a Document. </summary>
public void Add(Document doc)
{
foreach(Field field in doc.Fields())
{
Add(field.Name(), field.IsIndexed(), field.IsTermVectorStored(), field.IsStorePositionWithTermVector(), field.IsStoreOffsetWithTermVector(), field.GetOmitNorms());
}
}
/// <summary>Adds field info for a Document. </summary>
public void Add(Document doc)
{
foreach (Field field in doc.Fields())
{
Add(field.Name(), field.IsIndexed(), field.IsTermVectorStored(), field.IsStorePositionWithTermVector(), field.IsStoreOffsetWithTermVector(), field.GetOmitNorms());
}
}
public static int NumFields(Document doc)
{
int result = 0;
foreach (Field field in doc.Fields())
{
System.Object generatedAux = field;
result++;
}
return(result);
}
public virtual void TestDocument()
{
try
{
Assert.IsTrue(reader.NumDocs() == 1);
Assert.IsTrue(reader.MaxDoc() >= 1);
Document result = reader.Document(0);
Assert.IsTrue(result != null);
//There are 2 unstored fields on the document that are not preserved across writing
Assert.IsTrue(DocHelper.NumFields(result) == DocHelper.NumFields(testDoc) - 2);
foreach (Field field in result.Fields())
{
Assert.IsTrue(field != null);
Assert.IsTrue(DocHelper.nameValues.Contains(field.Name()));
}
}
catch (System.IO.IOException e)
{
System.Console.Error.WriteLine(e.StackTrace);
Assert.IsTrue(false);
}
}
// Tokenizes the fields of a document into Postings.
private void InvertDocument(Document doc)
{
foreach(Field field in doc.Fields())
{
System.String fieldName = field.Name();
int fieldNumber = fieldInfos.FieldNumber(fieldName);
int length = fieldLengths[fieldNumber]; // length of field
int position = fieldPositions[fieldNumber]; // position in field
if (length > 0)
position += analyzer.GetPositionIncrementGap(fieldName);
int offset = fieldOffsets[fieldNumber]; // offset field
if (field.IsIndexed())
{
if (!field.IsTokenized())
{
// un-tokenized field
System.String stringValue = field.StringValue();
if (field.IsStoreOffsetWithTermVector())
AddPosition(fieldName, stringValue, position++, new TermVectorOffsetInfo(offset, offset + stringValue.Length));
else
AddPosition(fieldName, stringValue, position++, null);
offset += stringValue.Length;
length++;
}
else
{
System.IO.TextReader reader; // find or make Reader
if (field.ReaderValue() != null)
reader = field.ReaderValue();
else if (field.StringValue() != null)
reader = new System.IO.StringReader(field.StringValue());
else
throw new System.ArgumentException("field must have either String or Reader value");
// Tokenize field and add to postingTable
TokenStream stream = analyzer.TokenStream(fieldName, reader);
try
{
Token lastToken = null;
for (Token t = stream.Next(); t != null; t = stream.Next())
{
position += (t.GetPositionIncrement() - 1);
if (field.IsStoreOffsetWithTermVector())
AddPosition(fieldName, t.TermText(), position++, new TermVectorOffsetInfo(offset + t.StartOffset(), offset + t.EndOffset()));
else
AddPosition(fieldName, t.TermText(), position++, null);
lastToken = t;
if (++length > maxFieldLength)
{
if (infoStream != null)
infoStream.WriteLine("maxFieldLength " + maxFieldLength + " reached, ignoring following tokens");
break;
}
}
if (lastToken != null)
offset += lastToken.EndOffset() + 1;
}
finally
{
stream.Close();
}
}
fieldLengths[fieldNumber] = length; // save field length
fieldPositions[fieldNumber] = position; // save field position
fieldBoosts[fieldNumber] *= field.GetBoost();
fieldOffsets[fieldNumber] = offset;
}
}
}
internal void AddDocument(Document doc)
{
indexStream.WriteLong(fieldsStream.GetFilePointer());
int storedCount = 0;
foreach (Field field in doc.Fields())
{
if (field.IsStored())
{
storedCount++;
}
}
fieldsStream.WriteVInt(storedCount);
foreach (Field field in doc.Fields())
{
if (field.IsStored())
{
fieldsStream.WriteVInt(fieldInfos.FieldNumber(field.Name()));
byte bits = 0;
if (field.IsTokenized())
{
bits |= FieldsWriter.FIELD_IS_TOKENIZED;
}
if (field.IsBinary())
{
bits |= FieldsWriter.FIELD_IS_BINARY;
}
if (field.IsCompressed())
{
bits |= FieldsWriter.FIELD_IS_COMPRESSED;
}
fieldsStream.WriteByte(bits);
if (field.IsCompressed())
{
// compression is enabled for the current field
byte[] data = null;
// check if it is a binary field
if (field.IsBinary())
{
data = Compress(field.BinaryValue());
}
else
{
data = Compress(System.Text.Encoding.GetEncoding("UTF-8").GetBytes(field.StringValue()));
}
int len = data.Length;
fieldsStream.WriteVInt(len);
fieldsStream.WriteBytes(data, len);
}
else
{
// compression is disabled for the current field
if (field.IsBinary())
{
byte[] data = field.BinaryValue();
int len = data.Length;
fieldsStream.WriteVInt(len);
fieldsStream.WriteBytes(data, len);
}
else
{
fieldsStream.WriteString(field.StringValue());
}
}
}
}
}
public static int NumFields(Document doc)
{
int result = 0;
foreach (Field field in doc.Fields())
{
System.Object generatedAux = field;
result++;
}
return result;
}
internal void AddDocument(Document doc)
{
indexStream.WriteLong(fieldsStream.GetFilePointer());
int storedCount = 0;
foreach (Field field in doc.Fields())
{
if (field.IsStored())
storedCount++;
}
fieldsStream.WriteVInt(storedCount);
foreach (Field field in doc.Fields())
{
if (field.IsStored())
{
fieldsStream.WriteVInt(fieldInfos.FieldNumber(field.Name()));
byte bits = 0;
if (field.IsTokenized())
bits |= FieldsWriter.FIELD_IS_TOKENIZED;
if (field.IsBinary())
bits |= FieldsWriter.FIELD_IS_BINARY;
if (field.IsCompressed())
bits |= FieldsWriter.FIELD_IS_COMPRESSED;
fieldsStream.WriteByte(bits);
if (field.IsCompressed())
{
// compression is enabled for the current field
byte[] data = null;
// check if it is a binary field
if (field.IsBinary())
{
data = Compress(field.BinaryValue());
}
else
{
data = Compress(System.Text.Encoding.GetEncoding("UTF-8").GetBytes(field.StringValue()));
}
int len = data.Length;
fieldsStream.WriteVInt(len);
fieldsStream.WriteBytes(data, len);
}
else
{
// compression is disabled for the current field
if (field.IsBinary())
{
byte[] data = field.BinaryValue();
int len = data.Length;
fieldsStream.WriteVInt(len);
fieldsStream.WriteBytes(data, len);
}
else
{
fieldsStream.WriteString(field.StringValue());
}
}
}
}
}
// Tokenizes the fields of a document into Postings.
private void InvertDocument(Document doc)
{
foreach (Field field in doc.Fields())
{
System.String fieldName = field.Name();
int fieldNumber = fieldInfos.FieldNumber(fieldName);
int length = fieldLengths[fieldNumber]; // length of field
int position = fieldPositions[fieldNumber]; // position in field
if (length > 0)
{
position += analyzer.GetPositionIncrementGap(fieldName);
}
int offset = fieldOffsets[fieldNumber]; // offset field
if (field.IsIndexed())
{
if (!field.IsTokenized())
{
// un-tokenized field
System.String stringValue = field.StringValue();
if (field.IsStoreOffsetWithTermVector())
{
AddPosition(fieldName, stringValue, position++, new TermVectorOffsetInfo(offset, offset + stringValue.Length));
}
else
{
AddPosition(fieldName, stringValue, position++, null);
}
offset += stringValue.Length;
length++;
}
else
{
System.IO.TextReader reader; // find or make Reader
if (field.ReaderValue() != null)
{
reader = field.ReaderValue();
}
else if (field.StringValue() != null)
{
reader = new System.IO.StringReader(field.StringValue());
}
else
{
throw new System.ArgumentException("field must have either String or Reader value");
}
// Tokenize field and add to postingTable
TokenStream stream = analyzer.TokenStream(fieldName, reader);
try
{
Token lastToken = null;
for (Token t = stream.Next(); t != null; t = stream.Next())
{
position += (t.GetPositionIncrement() - 1);
if (field.IsStoreOffsetWithTermVector())
{
AddPosition(fieldName, t.TermText(), position++, new TermVectorOffsetInfo(offset + t.StartOffset(), offset + t.EndOffset()));
}
else
{
AddPosition(fieldName, t.TermText(), position++, null);
}
lastToken = t;
if (++length > maxFieldLength)
{
if (infoStream != null)
{
infoStream.WriteLine("maxFieldLength " + maxFieldLength + " reached, ignoring following tokens");
}
break;
}
}
if (lastToken != null)
{
offset += lastToken.EndOffset() + 1;
}
}
finally
{
stream.Close();
}
}
fieldLengths[fieldNumber] = length; // save field length
fieldPositions[fieldNumber] = position; // save field position
fieldBoosts[fieldNumber] *= field.GetBoost();
fieldOffsets[fieldNumber] = offset;
}
}
}
