// implement RelNode
public RelOptCost computeSelfCost(RelOptPlanner planner) {
double dRows = RelMetadataQuery.getRowCount(this);
// Assume CPU is negligible since values are precomputed.
double dCpu = 1;
double dIo = 0;
return planner.makeCost(dRows, dCpu, dIo);
}
public OptiqPreparingStmt(
CatalogReader catalogReader, RelDataTypeFactory typeFactory, Schema schema) {
super(catalogReader);
this.schema = schema;
planner = new VolcanoPlanner();
planner.addRelTraitDef(CallingConventionTraitDef.instance);
RelOptUtil.registerAbstractRels(planner);
planner.addRule(JavaRules.ENUMERABLE_JOIN_RULE);
planner.addRule(JavaRules.ENUMERABLE_CALC_RULE);
planner.addRule(JavaRules.ENUMERABLE_AGGREGATE_RULE);
planner.addRule(JavaRules.ENUMERABLE_SORT_RULE);
planner.addRule(JavaRules.ENUMERABLE_UNION_RULE);
planner.addRule(JavaRules.ENUMERABLE_INTERSECT_RULE);
planner.addRule(JavaRules.ENUMERABLE_MINUS_RULE);
planner.addRule(TableAccessRule.instance);
rexBuilder = new RexBuilder(typeFactory);
}