优化层 #

RelBuilder,关系表达式生成器

HepProgramBuilder, HepPlanner,

优化模型 #

HepPlanner #

HepPlanner 执行流程 #

findBestExp:189, HepPlanner executeProgram:202, HepPlanner applyRules:407, HepPlanner applyRule:542, HepPlanner fireRule:333, AbstractRelOptPlanner onMatch:375, FilterJoinRule$FilterIntoJoinRule