JoinBatch

Support for asynchronous batched index lookups on joins.

Methods
static IndexLookupBatch	createFakeIndexLookupBatch(TableFilter filter) Create fake index lookup batch for non-batched table filter.
static IndexLookupBatch	createFakeIndexLookupBatch(TableFilter filter) Create fake index lookup batch for non-batched table filter. Parameters: filter - the table filter Returns: fake index lookup batch
static IndexLookupBatch	createViewIndexLookupBatch(ViewIndex viewIndex) Create index lookup batch for a view index.
static IndexLookupBatch	createViewIndexLookupBatch(ViewIndex viewIndex) Create index lookup batch for a view index. Parameters: viewIndex - view index Returns: index lookup batch or {@code null} if batching is not supported for this query
	JoinBatch(int filtersCount, TableFilter additionalFilter)
	JoinBatch(int filtersCount, TableFilter additionalFilter) Parameters: filtersCount - number of filters participating in this batched join additionalFilter - table filter after this batched join.
IndexLookupBatch	getLookupBatch(int joinFilterId) Get the lookup batch for the given table filter.
IndexLookupBatch	getLookupBatch(int joinFilterId) Get the lookup batch for the given table filter. Parameters: joinFilterId - joined table filter id Returns: lookup batch
Value	getValue(int filterId, Column column) Get the value for the given column.
Value	getValue(int filterId, Column column) Get the value for the given column. Parameters: filterId - table filter id column - the column Returns: column value for current row
boolean	next() Get next row from the join batch.
boolean	next() Get next row from the join batch. Returns: true if there is a next row
void	register(TableFilter filter, IndexLookupBatch lookupBatch) Register the table filter and lookup batch.
void	register(TableFilter filter, IndexLookupBatch lookupBatch) Register the table filter and lookup batch. Parameters: filter - table filter lookupBatch - lookup batch
void	reset(boolean beforeQuery) Reset state of this batch.
void	reset(boolean beforeQuery) Reset state of this batch. Parameters: beforeQuery - {@code true} if reset was called before the query run, {@code false} if after
String	toString()
String	toString()

Fields
static Cursor	EMPTY_CURSOR
static Future	EMPTY_FUTURE_CURSOR
static boolean	batchedSubQuery
static JoinBatch.JoinFilter[]	filters
static JoinBatch.JoinFilter	top
static Future	viewTopFutureCursor

EMPTY_CURSOR

An empty cursor.

EMPTY_FUTURE_CURSOR

An empty future cursor.

batchedSubQuery

Whether this is a batched subquery.

filters

The filters.

top

The top filter.

viewTopFutureCursor

The top cursor.