| package edu.uci.ics.hyracks.algebricks.rewriter.rules; |
| |
| import org.apache.commons.lang3.mutable.Mutable; |
| |
| import edu.uci.ics.hyracks.algebricks.core.algebra.base.ILogicalOperator; |
| import edu.uci.ics.hyracks.algebricks.core.algebra.base.ILogicalPlan; |
| import edu.uci.ics.hyracks.algebricks.core.algebra.base.IOptimizationContext; |
| import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator; |
| import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractOperatorWithNestedPlans; |
| import edu.uci.ics.hyracks.algebricks.core.api.exceptions.AlgebricksException; |
| import edu.uci.ics.hyracks.algebricks.core.rewriter.base.IAlgebraicRewriteRule; |
| |
| public class ReinferAllTypesRule implements IAlgebraicRewriteRule { |
| |
| @Override |
| public boolean rewritePost(Mutable<ILogicalOperator> opRef, IOptimizationContext context) |
| throws AlgebricksException { |
| return false; |
| } |
| |
| @Override |
| public boolean rewritePre(Mutable<ILogicalOperator> opRef, IOptimizationContext context) throws AlgebricksException { |
| if (context.checkIfInDontApplySet(this, opRef.getValue())) { |
| return false; |
| } |
| typeOpRec(opRef, context); |
| return true; |
| } |
| |
| private void typePlan(ILogicalPlan p, IOptimizationContext context) throws AlgebricksException { |
| for (Mutable<ILogicalOperator> r : p.getRoots()) { |
| typeOpRec(r, context); |
| } |
| } |
| |
| private void typeOpRec(Mutable<ILogicalOperator> r, IOptimizationContext context) throws AlgebricksException { |
| AbstractLogicalOperator op = (AbstractLogicalOperator) r.getValue(); |
| for (Mutable<ILogicalOperator> i : op.getInputs()) { |
| typeOpRec(i, context); |
| } |
| if (op.hasNestedPlans()) { |
| for (ILogicalPlan p : ((AbstractOperatorWithNestedPlans) op).getNestedPlans()) { |
| typePlan(p, context); |
| } |
| } |
| context.computeAndSetTypeEnvironmentForOperator(op); |
| context.addToDontApplySet(this, op); |
| } |
| |
| } |