/// <summary>
/// Build query plan using the filter.
/// </summary>
/// <param name="typesPerStream">event types for each stream</param>
/// <param name="outerJoinDescList">list of outer join criteria, or null if there are no outer joins</param>
/// <param name="queryGraph">relationships between streams based on filter expressions and outer-join on-criteria</param>
/// <param name="streamNames">names of streams</param>
/// <param name="historicalViewableDesc">The historical viewable desc.</param>
/// <param name="dependencyGraph">dependencies between historical streams</param>
/// <param name="historicalStreamIndexLists">index management, populated for the query plan</param>
/// <param name="streamJoinAnalysisResult">The stream join analysis result.</param>
/// <param name="isQueryPlanLogging">if set to <c>true</c> [is query plan logging].</param>
/// <param name="annotations">The annotations.</param>
/// <param name="exprEvaluatorContext">The expr evaluator context.</param>
/// <returns>
/// query plan
/// </returns>
/// <exception cref="System.ArgumentException">
/// Number of join stream types is less then 2
/// or
/// Too many outer join descriptors found
/// </exception>
/// <throws>ExprValidationException if the query plan fails</throws>
public static QueryPlan GetPlan(EventType[] typesPerStream,
OuterJoinDesc[] outerJoinDescList,
QueryGraph queryGraph,
string[] streamNames,
HistoricalViewableDesc historicalViewableDesc,
DependencyGraph dependencyGraph,
HistoricalStreamIndexList[] historicalStreamIndexLists,
StreamJoinAnalysisResult streamJoinAnalysisResult,
bool isQueryPlanLogging,
Attribute[] annotations,
ExprEvaluatorContext exprEvaluatorContext)
{
string methodName = ".getPlan ";
int numStreams = typesPerStream.Length;
if (numStreams < 2)
{
throw new ArgumentException("Number of join stream types is less then 2");
}
if (outerJoinDescList.Length >= numStreams)
{
throw new ArgumentException("Too many outer join descriptors found");
}
if (numStreams == 2)
{
OuterJoinType?outerJoinType = null;
if (outerJoinDescList.Length > 0)
{
outerJoinType = outerJoinDescList[0].OuterJoinType;
}
QueryPlan queryPlanX = TwoStreamQueryPlanBuilder.Build(typesPerStream, queryGraph, outerJoinType, streamJoinAnalysisResult.UniqueKeys, streamJoinAnalysisResult.TablesPerStream);
RemoveUnidirectionalAndTable(queryPlanX, streamJoinAnalysisResult);
if (log.IsDebugEnabled)
{
log.Debug(methodName + "2-Stream queryPlan=" + queryPlanX);
}
return(queryPlanX);
}
bool hasPreferMergeJoin = HintEnum.PREFER_MERGE_JOIN.GetHint(annotations) != null;
bool hasForceNestedIter = HintEnum.FORCE_NESTED_ITER.GetHint(annotations) != null;
bool isAllInnerJoins = outerJoinDescList.Length == 0 || OuterJoinDesc.ConsistsOfAllInnerJoins(outerJoinDescList);
if (isAllInnerJoins && !hasPreferMergeJoin)
{
QueryPlan queryPlanX = NStreamQueryPlanBuilder.Build(queryGraph, typesPerStream,
historicalViewableDesc, dependencyGraph, historicalStreamIndexLists,
hasForceNestedIter, streamJoinAnalysisResult.UniqueKeys,
streamJoinAnalysisResult.TablesPerStream);
if (queryPlanX != null)
{
RemoveUnidirectionalAndTable(queryPlanX, streamJoinAnalysisResult);
if (log.IsDebugEnabled)
{
log.Debug(methodName + "Count-Stream inner-join queryPlan=" + queryPlanX);
}
return(queryPlanX);
}
if (isQueryPlanLogging && queryPlanLog.IsInfoEnabled)
{
log.Info("Switching to Outer-NStream algorithm for query plan");
}
}
QueryPlan queryPlan = NStreamOuterQueryPlanBuilder.Build(queryGraph, outerJoinDescList, streamNames, typesPerStream,
historicalViewableDesc, dependencyGraph, historicalStreamIndexLists, exprEvaluatorContext, streamJoinAnalysisResult.UniqueKeys,
streamJoinAnalysisResult.TablesPerStream);
RemoveUnidirectionalAndTable(queryPlan, streamJoinAnalysisResult);
return(queryPlan);
}
public void TestBuild()
{
QueryPlan plan = NStreamQueryPlanBuilder.Build(_queryGraph, _typesPerStream, new HistoricalViewableDesc(6), _dependencyGraph, null, false, new string[_queryGraph.NumStreams][][], new TableMetadata[_queryGraph.NumStreams]);
Log.Debug(".testBuild plan=" + plan);
}