public SegmentCacheManager(MondrianServer server) {
this.server = server;
ACTOR = new Actor();
thread = new Thread(ACTOR, "mondrian.rolap.agg.SegmentCacheManager$ACTOR");
thread.setDaemon(true);
thread.start();
// Create the index registry.
this.indexRegistry = new SegmentCacheIndexRegistry();
// Add a local cache, if needed.
if (!MondrianProperties.instance().DisableCaching.get()) {
final MemorySegmentCache cache = new MemorySegmentCache();
segmentCacheWorkers.add(new SegmentCacheWorker(cache, thread));
}
// Add an external cache, if configured.
final List<SegmentCache> externalCache = SegmentCacheWorker.initCache();
for (SegmentCache cache : externalCache) {
// Create a worker for this external cache
segmentCacheWorkers.add(new SegmentCacheWorker(cache, thread));
// Hook up a listener so it can update
// the segment index.
cache.addListener(new AsyncCacheListener(this, server));
}
compositeCache = new CompositeSegmentCache(segmentCacheWorkers);
}
/**
* Creates a MondrianOlap4jCellSetAxisMetaData.
*
* @param cellSetMetaData Cell set axis metadata
* @param queryAxis Query axis
*/
MondrianOlap4jCellSetAxisMetaData(
MondrianOlap4jCellSetMetaData cellSetMetaData, QueryAxis queryAxis) {
if (queryAxis == null) {
queryAxis =
new QueryAxis(
false,
null,
AxisOrdinal.StandardAxisOrdinal.SLICER,
QueryAxis.SubtotalVisibility.Undefined);
}
this.queryAxis = queryAxis;
this.cellSetMetaData = cellSetMetaData;
// populate property list
for (Id id : queryAxis.getDimensionProperties()) {
propertyList.add(Property.StandardMemberProperty.valueOf(id.toStringArray()[0]));
}
}
public List<SegmentHeader> getSegmentHeaders() {
// Special case 0 and 1 workers, for which the 'union' operation
// is trivial.
switch (workers.size()) {
case 0:
return Collections.emptyList();
case 1:
return workers.get(0).getSegmentHeaders();
default:
final List<SegmentHeader> list = new ArrayList<SegmentHeader>();
final Set<SegmentHeader> set = new HashSet<SegmentHeader>();
for (SegmentCacheWorker worker : workers) {
for (SegmentHeader header : worker.getSegmentHeaders()) {
if (set.add(header)) {
list.add(header);
}
}
}
return list;
}
}
public List<Hierarchy> getHierarchies() {
if (queryAxis.getAxisOrdinal().isFilter()) {
// Slicer contains all dimensions not mentioned on other axes.
// The list contains the default hierarchy of
// each dimension not already in the slicer or in another axes.
Set<Dimension> dimensionSet = new HashSet<Dimension>();
for (CellSetAxisMetaData cellSetAxisMetaData : cellSetMetaData.getAxesMetaData()) {
for (Hierarchy hierarchy : cellSetAxisMetaData.getHierarchies()) {
dimensionSet.add(hierarchy.getDimension());
}
}
List<Hierarchy> hierarchyList = new ArrayList<Hierarchy>();
for (Dimension dimension : cellSetMetaData.getCube().getDimensions()) {
if (dimensionSet.add(dimension)) {
hierarchyList.add(dimension.getDefaultHierarchy());
}
}
// In case a dimension has multiple hierarchies, return the
// declared type of the slicer expression. For example, if the
// WHERE clause contains [Time].[Weekly].[1997].[Week 6], the
// slicer should contain [Time].[Weekly] not the default hierarchy
// [Time].
for (Hierarchy hierarchy : getHierarchiesNonFilter()) {
if (hierarchy.getDimension().getHierarchies().size() == 1) {
continue;
}
for (int i = 0; i < hierarchyList.size(); i++) {
Hierarchy hierarchy1 = hierarchyList.get(i);
if (hierarchy1.getDimension().equals(hierarchy.getDimension())
&& hierarchy1 != hierarchy) {
hierarchyList.set(i, hierarchy);
}
}
}
return hierarchyList;
} else {
return getHierarchiesNonFilter();
}
}
/**
* Returns the hierarchies on a non-filter axis.
*
* @return List of hierarchies, never null
*/
private List<Hierarchy> getHierarchiesNonFilter() {
final Exp exp = queryAxis.getSet();
if (exp == null) {
return Collections.emptyList();
}
Type type = exp.getType();
if (type instanceof SetType) {
type = ((SetType) type).getElementType();
}
final MondrianOlap4jConnection olap4jConnection =
cellSetMetaData.olap4jStatement.olap4jConnection;
if (type instanceof TupleType) {
final TupleType tupleType = (TupleType) type;
List<Hierarchy> hierarchyList = new ArrayList<Hierarchy>();
for (Type elementType : tupleType.elementTypes) {
hierarchyList.add(olap4jConnection.toOlap4j(elementType.getHierarchy()));
}
return hierarchyList;
} else {
return Collections.singletonList((Hierarchy) olap4jConnection.toOlap4j(type.getHierarchy()));
}
}