TaggedItemIndex

Builder for creating an index. The builder should be used in a particular order. A first pass over the tags is needed to compute a table of strings. A subsequent pass is needed to build up the actual index. Steps:

1. Call addStrings for each tag key/value pair for all items.
2. Call createStringTable to build the string tables.
3. Call addTag for each tag key/value pair for all items.
4. Call build to create the final index.

Create an index from the provided sequence. The items should already be in the desired order for receiving results.