internal override bool Start(Fieldable[] fields, int count)
{
doVectors = false;
doVectorPositions = false;
doVectorOffsets = false;
for (int i = 0; i < count; i++)
{
Fieldable field = fields[i];
if (field.IsIndexed() && field.IsTermVectorStored())
{
doVectors = true;
doVectorPositions |= field.IsStorePositionWithTermVector();
doVectorOffsets |= field.IsStoreOffsetWithTermVector();
}
}
if (doVectors)
{
if (perThread.doc == null)
{
perThread.doc = termsWriter.GetPerDoc();
perThread.doc.docID = docState.docID;
System.Diagnostics.Debug.Assert(perThread.doc.numVectorFields == 0);
System.Diagnostics.Debug.Assert(0 == perThread.doc.tvf.Length());
System.Diagnostics.Debug.Assert(0 == perThread.doc.tvf.GetFilePointer());
}
else
{
System.Diagnostics.Debug.Assert(perThread.doc.docID == docState.docID);
if (termsHashPerField.numPostings != 0)
{
// Only necessary if previous doc hit a
// non-aborting exception while writing vectors in
// this field:
termsHashPerField.Reset();
}
}
}
// TODO: only if needed for performance
//perThread.postingsCount = 0;
return(doVectors);
}
public override DocumentsWriter.DocWriter ProcessDocument()
{
consumer.StartDocument();
fieldsWriter.StartDocument();
Document doc = docState.doc;
System.Diagnostics.Debug.Assert(docFieldProcessor.docWriter.writer.TestPoint("DocumentsWriter.ThreadState.init start"));
fieldCount = 0;
int thisFieldGen = fieldGen++;
System.Collections.IList docFields = doc.GetFields();
int numDocFields = docFields.Count;
// Absorb any new fields first seen in this document.
// Also absorb any changes to fields we had already
// seen before (eg suddenly turning on norms or
// vectors, etc.):
for (int i = 0; i < numDocFields; i++)
{
Fieldable field = (Fieldable)docFields[i];
System.String fieldName = field.Name();
// Make sure we have a PerField allocated
int hashPos = fieldName.GetHashCode() & hashMask;
DocFieldProcessorPerField fp = fieldHash[hashPos];
while (fp != null && !fp.fieldInfo.name.Equals(fieldName))
{
fp = fp.next;
}
if (fp == null)
{
// TODO FI: we need to genericize the "flags" that a
// field holds, and, how these flags are merged; it
// needs to be more "pluggable" such that if I want
// to have a new "thing" my Fields can do, I can
// easily add it
FieldInfo fi = fieldInfos.Add(fieldName, field.IsIndexed(), field.IsTermVectorStored(), field.IsStorePositionWithTermVector(), field.IsStoreOffsetWithTermVector(), field.GetOmitNorms(), false, field.GetOmitTf());
fp = new DocFieldProcessorPerField(this, fi);
fp.next = fieldHash[hashPos];
fieldHash[hashPos] = fp;
totalFieldCount++;
if (totalFieldCount >= fieldHash.Length / 2)
{
Rehash();
}
}
else
{
fp.fieldInfo.Update(field.IsIndexed(), field.IsTermVectorStored(), field.IsStorePositionWithTermVector(), field.IsStoreOffsetWithTermVector(), field.GetOmitNorms(), false, field.GetOmitTf());
}
if (thisFieldGen != fp.lastGen)
{
// First time we're seeing this field for this doc
fp.fieldCount = 0;
if (fieldCount == fields.Length)
{
int newSize = fields.Length * 2;
DocFieldProcessorPerField[] newArray = new DocFieldProcessorPerField[newSize];
Array.Copy(fields, 0, newArray, 0, fieldCount);
fields = newArray;
}
fields[fieldCount++] = fp;
fp.lastGen = thisFieldGen;
}
if (fp.fieldCount == fp.fields.Length)
{
Fieldable[] newArray = new Fieldable[fp.fields.Length * 2];
Array.Copy(fp.fields, 0, newArray, 0, fp.fieldCount);
fp.fields = newArray;
}
fp.fields[fp.fieldCount++] = field;
if (field.IsStored())
{
fieldsWriter.AddField(field, fp.fieldInfo);
}
}
// If we are writing vectors then we must visit
// fields in sorted order so they are written in
// sorted order. TODO: we actually only need to
// sort the subset of fields that have vectors
// enabled; we could save [small amount of] CPU
// here.
QuickSort(fields, 0, fieldCount - 1);
for (int i = 0; i < fieldCount; i++)
{
fields[i].consumer.ProcessFields(fields[i].fields, fields[i].fieldCount);
}
if (docState.maxTermPrefix != null && docState.infoStream != null)
{
docState.infoStream.WriteLine("WARNING: document contains at least one immense term (longer than the max length " + DocumentsWriter.MAX_TERM_LENGTH + "), all of which were skipped. Please correct the analyzer to not produce such terms. The prefix of the first immense term is: '" + docState.maxTermPrefix + "...'");
docState.maxTermPrefix = null;
}
DocumentsWriter.DocWriter one = fieldsWriter.FinishDocument();
DocumentsWriter.DocWriter two = consumer.FinishDocument();
if (one == null)
{
return(two);
}
else if (two == null)
{
return(one);
}
else
{
PerDoc both = GetPerDoc();
both.docID = docState.docID;
System.Diagnostics.Debug.Assert(one.docID == docState.docID);
System.Diagnostics.Debug.Assert(two.docID == docState.docID);
both.one = one;
both.two = two;
return(both);
}
}
/// <summary>Adds field info for a Document. </summary>
public void Add(Document doc)
{
lock (this)
{
System.Collections.IList fields = doc.GetFields();
System.Collections.IEnumerator fieldIterator = fields.GetEnumerator();
while (fieldIterator.MoveNext())
{
Fieldable field = (Fieldable)fieldIterator.Current;
Add(field.Name(), field.IsIndexed(), field.IsTermVectorStored(), field.IsStorePositionWithTermVector(), field.IsStoreOffsetWithTermVector(), field.GetOmitNorms(), false, field.GetOmitTf());
}
}
}
// Tokenizes the fields of a document into Postings.
private void InvertDocument(Document doc)
{
System.Collections.IEnumerator fieldIterator = doc.GetFields().GetEnumerator();
while (fieldIterator.MoveNext())
{
Fieldable field = (Fieldable)fieldIterator.Current;
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;
}
}
}