IndexLookupBatch

Support for asynchronous batched lookups in indexes. The flow is the following: H2 engine will be calling {@link #addSearchRows(SearchRow, SearchRow)} until method {@link #isBatchFull()} will return {@code true} or there are no more search rows to add. Then method {@link #find()} will be called to execute batched lookup. Note that a single instance of {@link IndexLookupBatch} can be reused for multiple sequential batched lookups, moreover it can be reused for multiple queries for the same prepared statement.

Methods
boolean	addSearchRows(SearchRow first, SearchRow last) Add search row pair to the batch.
boolean	addSearchRows(SearchRow first, SearchRow last) Add search row pair to the batch. Parameters: first - the first row, or null for no limit last - the last row, or null for no limit Returns: {@code false} if this search row pair is known to produce no results and thus the given row pair was not added
List	find() Execute batched lookup and return future cursor for each provided search row pair.
List	find() Execute batched lookup and return future cursor for each provided search row pair. Note that this method must return exactly the same number of future cursors in result list as number of {@link #addSearchRows(SearchRow, SearchRow)} calls has been done before {@link #find()} call exactly in the same order. Returns: List of future cursors for collected search rows.
String	getPlanSQL() Get plan for EXPLAIN.
String	getPlanSQL() Get plan for EXPLAIN. Returns: plan
boolean	isBatchFull() Check if this batch is full.
boolean	isBatchFull() Check if this batch is full. Returns: {@code true} If batch is full, will not accept any more rows and {@link #find()} can be executed.
void	reset(boolean beforeQuery) Reset this batch to clear state.
void	reset(boolean beforeQuery) Reset this batch to clear state. This method will be called before and after each query execution. Parameters: beforeQuery - if it is being called before query execution