/// <summary> Retrieve the term vector for the given document and field</summary>
/// <param name="docNum">The document number to retrieve the vector for
/// </param>
/// <param name="field">The field within the document to retrieve
/// </param>
/// <returns> The TermFreqVector for the document and field or null if there is no termVector for this field.
/// </returns>
/// <throws> IOException if there is an error reading the term vector files </throws>
public /*internal*/ virtual ITermFreqVector Get(int docNum, System.String field)
{
// Check if no term vectors are available for this segment at all
ParallelArrayTermVectorMapper mapper = new ParallelArrayTermVectorMapper();
Get(docNum, field, mapper);
return(mapper.MaterializeVector());
}
private SegmentTermVector[] ReadTermVectors(int docNum, System.String[] fields, long[] tvfPointers)
{
SegmentTermVector[] res = new SegmentTermVector[fields.Length];
for (int i = 0; i < fields.Length; i++)
{
var mapper = new ParallelArrayTermVectorMapper();
mapper.SetDocumentNumber(docNum);
ReadTermVector(fields[i], tvfPointers[i], mapper);
res[i] = (SegmentTermVector)mapper.MaterializeVector();
}
return(res);
}
