| private ConstructPhysicalJoinAndUpdateCost ( CandidateJoinUnit nodeUnitCandidate, WBooleanExpression joinCondition, double preJoinSelectivity, double postJoinSelectivity, double estimatedSelectivity, GraphMetaData metaData ) : void | ||
| nodeUnitCandidate | CandidateJoinUnit | |
| joinCondition | WBooleanExpression | |
| preJoinSelectivity | double | |
| postJoinSelectivity | double | |
| estimatedSelectivity | double | |
| metaData | GraphMetaData | |
| return | void | |
/// <summary>
/// Transit from current component to the new component in the next state given the Node Unit
/// </summary>
/// <param name="candidateTree"></param>
/// <param name="statisticsCalculator"></param>
/// <returns></returns>
public MatchComponent GetNextState(
CandidateJoinUnit candidateTree,
IMatchJoinStatisticsCalculator statisticsCalculator,
GraphMetaData metaData)
{
// Deep copy the component
var newComponent = new MatchComponent(this);
// Constrcuts join conditions and retrieves join selectivity
double joinSelectivity;
double sqlEstimatedJoinSelectivity;
var joinCondition = newComponent.ConstructJoinCondition(candidateTree, statisticsCalculator, metaData, out joinSelectivity,
out sqlEstimatedJoinSelectivity);
// Constructs physical join method and join table references
newComponent.ConstructPhysicalJoinAndUpdateCost(candidateTree, joinCondition,
joinSelectivity, sqlEstimatedJoinSelectivity, metaData);
return(newComponent);
}
/// <summary>
/// Transit from current component to the new component in the next state given the Node Unit
/// </summary>
/// <param name="candidateTree"></param>
/// <param name="statisticsCalculator"></param>
/// <param name="metaData"></param>
/// <param name="srcNodeStatisticsDict"></param>
/// <returns></returns>
public MatchComponent GetNextState(
CandidateJoinUnit candidateTree,
IMatchJoinStatisticsCalculator statisticsCalculator,
GraphMetaData metaData,
Dictionary<Tuple<string, bool>, Statistics> srcNodeStatisticsDict)
{
// Deep copy the component
var newComponent = new MatchComponent(this);
// Constrcuts join conditions and retrieves join selectivity
double preJoinSelectivity, postJoinSelectivity, sqlEstimatedJoinSelectivity;
var joinCondition = newComponent.ConstructJoinCondition(candidateTree, statisticsCalculator, metaData, srcNodeStatisticsDict,
out preJoinSelectivity, out postJoinSelectivity, out sqlEstimatedJoinSelectivity);
// Constructs physical join method and join table references
newComponent.ConstructPhysicalJoinAndUpdateCost(candidateTree, joinCondition,
preJoinSelectivity, postJoinSelectivity, sqlEstimatedJoinSelectivity, metaData);
return newComponent;
}
