/// <summary>
/// Translates any added <see cref="FacetField"/>s into normal fields for indexing.
///
/// <para>
/// <b>NOTE:</b> you should add the returned document to <see cref="Index.IndexWriter"/>, not the
/// input one!
/// </para>
/// </summary>
public virtual Document Build(ITaxonomyWriter taxoWriter, Document doc)
{
// Find all FacetFields, collated by the actual field:
IDictionary <string, IList <FacetField> > byField = new Dictionary <string, IList <FacetField> >();
// ... and also all SortedSetDocValuesFacetFields:
IDictionary <string, IList <SortedSetDocValuesFacetField> > dvByField = new Dictionary <string, IList <SortedSetDocValuesFacetField> >();
// ... and also all AssociationFacetFields
IDictionary <string, IList <AssociationFacetField> > assocByField = new Dictionary <string, IList <AssociationFacetField> >();
var seenDims = new JCG.HashSet <string>();
foreach (IIndexableField field in doc.Fields)
{
if (field.IndexableFieldType == FacetField.TYPE)
{
FacetField facetField = (FacetField)field;
FacetsConfig.DimConfig dimConfig = GetDimConfig(facetField.Dim);
if (dimConfig.IsMultiValued == false)
{
CheckSeen(seenDims, facetField.Dim);
}
string indexFieldName = dimConfig.IndexFieldName;
if (!byField.TryGetValue(indexFieldName, out IList <FacetField> fields))
{
fields = new List <FacetField>();
byField[indexFieldName] = fields;
}
fields.Add(facetField);
}
if (field.IndexableFieldType == SortedSetDocValuesFacetField.TYPE)
{
var facetField = (SortedSetDocValuesFacetField)field;
FacetsConfig.DimConfig dimConfig = GetDimConfig(facetField.Dim);
if (dimConfig.IsMultiValued == false)
{
CheckSeen(seenDims, facetField.Dim);
}
string indexFieldName = dimConfig.IndexFieldName;
if (!dvByField.TryGetValue(indexFieldName, out IList <SortedSetDocValuesFacetField> fields))
{
fields = new List <SortedSetDocValuesFacetField>();
dvByField[indexFieldName] = fields;
}
fields.Add(facetField);
}
if (field.IndexableFieldType == AssociationFacetField.TYPE)
{
AssociationFacetField facetField = (AssociationFacetField)field;
FacetsConfig.DimConfig dimConfig = GetDimConfig(facetField.Dim);
if (dimConfig.IsMultiValued == false)
{
CheckSeen(seenDims, facetField.Dim);
}
if (dimConfig.IsHierarchical)
{
throw new ArgumentException("AssociationFacetField cannot be hierarchical (dim=\"" + facetField.Dim + "\")");
}
if (dimConfig.RequireDimCount)
{
throw new ArgumentException("AssociationFacetField cannot requireDimCount (dim=\"" + facetField.Dim + "\")");
}
string indexFieldName = dimConfig.IndexFieldName;
if (!assocByField.TryGetValue(indexFieldName, out IList <AssociationFacetField> fields))
{
fields = new List <AssociationFacetField>();
assocByField[indexFieldName] = fields;
}
fields.Add(facetField);
// Best effort: detect mis-matched types in same
// indexed field:
string type;
if (facetField is Int32AssociationFacetField)
{
type = "int";
}
else if (facetField is SingleAssociationFacetField)
{
type = "float";
}
else
{
type = "bytes";
}
// NOTE: not thread safe, but this is just best effort:
if (!assocDimTypes.TryGetValue(indexFieldName, out string curType))
{
assocDimTypes[indexFieldName] = type;
}
else if (!curType.Equals(type, StringComparison.Ordinal))
{
throw new ArgumentException("mixing incompatible types of AssocationFacetField (" + curType + " and " + type + ") in indexed field \"" + indexFieldName + "\"; use FacetsConfig to change the indexFieldName for each dimension");
}
}
}
Document result = new Document();
ProcessFacetFields(taxoWriter, byField, result);
ProcessSSDVFacetFields(dvByField, result);
ProcessAssocFacetFields(taxoWriter, assocByField, result);
//System.out.println("add stored: " + addedStoredFields);
foreach (IIndexableField field in doc.Fields)
{
IIndexableFieldType ft = field.IndexableFieldType;
if (ft != FacetField.TYPE && ft != SortedSetDocValuesFacetField.TYPE && ft != AssociationFacetField.TYPE)
{
result.Add(field);
}
}
return(result);
}
