Package mondrian.rolap.agg

Manages a cache of aggregates containing cell values.

Interface Summary

Interface	Description
QuerySpec	Contains the information necessary to generate a SQL statement to retrieve a set of cells.
Segment.ExcludedRegion	Definition of a region of values which are not in a segment.
SegmentBuilder.SegmentConverter	Functor to convert a segment header and body into a SegmentWithData.
SegmentCacheManager.Visitor	Visitor for messages (commands and events).
SegmentDataset	A SegmentDataset holds the values in a segment.
SegmentLoader.RowList.Handler

Class Summary

Class	Description
AbstractColumnPredicate	A AbstractColumnPredicate is an abstract implementation for StarColumnPredicate.
AbstractColumnPredicate.Factory	Factory for StarPredicates and StarColumnPredicates.
AbstractQuerySpec	Base class for QuerySpec implementations.
Aggregation	A Aggregation is a pre-computed aggregation over a set of columns.
AggregationKey	Column context that an Aggregation is computed for.
AggregationManager	RolapAggregationManager manages all Aggregations in the system.
AggregationManager.PinSetImpl	Implementation of RolapAggregationManager.PinSet using a HashSet.
AndPredicate	Predicate which is the intersection of a list of predicates.
CellRequest	A CellRequest contains the context necessary to get a cell value from a star.
DrillThroughCellRequest	Subclass of CellRequest that allows to specify which columns and measures to return as part of the ResultSet which we return to the client.
GroupingSet	A collection of Segments that can be represented as a GROUP BY GROUPING SET in a SQL query.
ListColumnPredicate	Predicate which is the union of a list of predicates, each of which applies to the same, single column.
ListPredicate	Base class for AndPredicate and OrPredicate.
LiteralStarPredicate	A constraint which always returns true or false.
MemberColumnPredicate	Column constraint defined by a member.
MemberTuplePredicate	Predicate which constrains a column to a particular member, or a range above or below a member, or a range between two members.
MinusStarPredicate	A StarPredicate which evaluates to true if its first child evaluates to true and its second child evaluates to false.
OrPredicate	Predicate which is the union of a list of predicates.
RangeColumnPredicate	Predicate constraining a column to be greater than or less than a given bound, or between a pair of bounds.
Segment	A Segment is a collection of cell values parameterized by a measure, and a set of (column, value) pairs.
SegmentAxis	Collection of values of one of the columns that parameterizes a Segment.
SegmentBuilder	Helper class that contains methods to convert between Segment and SegmentHeader, and also SegmentWithData and SegmentBody.
SegmentBuilder.SegmentConverterImpl	Implementation of SegmentBuilder.SegmentConverter that uses an AggregationKey and CellRequest as context to convert a SegmentHeader.
SegmentBuilder.StarSegmentConverter	Implementation of SegmentBuilder.SegmentConverter that uses a star measure and a list of StarPredicate.
SegmentCacheManager
SegmentCacheManager.Command<T>
SegmentCacheManager.FlushCommand	Command to flush a particular region from cache.
SegmentCacheManager.FlushResult	Result of a SegmentCacheManager.FlushCommand.
SegmentCacheWorker	Utility class to interact with the SegmentCache.
SegmentLoader	The SegmentLoader queries database and loads the data into the given set of segments.
SegmentLoader.RowList	Collection of rows, each with a set of columns of type Object, double, or int.
SegmentWithData	Extension to Segment with a data set.
StarPredicates	Utilities for StarPredicates and StarColumnPredicates.
ValueColumnPredicate	A constraint which requires a column to have a particular value.

Exception Summary

Exception	Description
CellRequestQuantumExceededException	Signals that there are enough outstanding cell requests that it is worth terminating this phase of execution and asking the segment cache for all of the cells that have been asked for.
SegmentCacheManager.AbortException	Exception which someone can throw to indicate to the Actor that whatever it was doing is not needed anymore.