Returns the next reusable scratch vector or makes a new one.

Sets the null indicator at 'idx'.

Given a top-level row returns corresponding index in the base vector or data().

Return the number of child vectors. This will exactly match the number of fields.

Return true iff the status indicates success.

Returns true if the next extract is part of 'rows'.

static

* Updates the begin_ and end_ values to match the * current bounds of the minimum selected index and the maximum selected * index (noting that t

* Set whether given index is selected. updateBounds() need to be called * explicitly after setValid() call, it can be called only once after multip

Returns a pointer to a block of memory of size bytes that can be written to, and guarantees for the lifetime of *this that that region will remain val

Decodes the 'vector' in preparation for calling hash() or computeValueIds(). The decoded vector can be accessed via decodedVector() getter.

Calls `messageFunc(arg)` and returns the result. Returns empty string if `messageFunc` is null.