Apple Newton Programmer’s Newton 2.0 (for Newton 2.0) - Manual (Page 501)

C H A P T E R 1 1
Data Storage and Retrieval
Summary of Data Storage 11-69
Multiple-Slot Index Specification Frame 11
{
// index keys may be multiple slot values
structure: 'multiSlot, // must use this value
// up to six path expressions specifying indexed slots
path:[ pathExpr1 , pathExpr2 , … , pathExpr6 ],
// data type found in each indexed slot
type:[ sym1 , sym2 , … sym6 ]
// optional. 'ascending or 'descending
order: [ sym1 , sym2 , … sym6 ]
// optional. pass 1 to use alternate sort table
sortID: nil
}
Tags Index Specification Frame 11
{
// must use this value - tags are slot values
structure:'slot,
// index values (tags) extracted from this slot
path:' slotName ,
// must use this value
type:'tags,
}
Query Specification Frame 11
// pass nil instead of a query spec frame
// to retrieve all entries in the soup
// this frame used for queries on single-slot indexes
// see next example for multiple-slot query spec frame
{
// use the specified single-slot index for this query
// required when querying for index values
indexPath : ' pathExpr ,
// minimum index key value examined by this query
// for all entries, (beginKey ≤ entry.indexPath)
beginKey : keyValue , // optional
// excluded lower boundary of key range examined by query
// for all entries, (beginExclKey < entry.indexPath)
beginExclKey : keyValue , // optional