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Wang Yanlin closed CALCITE-3278. -------------------------------- Assignee: Wang Yanlin Resolution: Won't Fix Use {{RexExecutor}} to evaluate constant RexNode will be more appropriate, just close this issue. > Simplify the use to translate RexNode to Expression for evaluating > ------------------------------------------------------------------ > > Key: CALCITE-3278 > URL: https://issues.apache.org/jira/browse/CALCITE-3278 > Project: Calcite > Issue Type: Improvement > Components: core > Reporter: Wang Yanlin > Assignee: Wang Yanlin > Priority: Minor > Labels: pull-request-available > Time Spent: 1h 20m > Remaining Estimate: 0h > > The method *forAggregation* of *RexToLixTranslator* is designed to work for > translating aggregate functions, with some parameters that we actually do not > need, if we just want to translate a single RexNode. > We lack a more common sense function to get an instance of > RexToLixTranslator. > And, the translated expression is a *ParameterExpression*, not fit for > evaluating. When evaluating, we get an exception like this > {code:java} > java.lang.RuntimeException: parameter v not on stack > at org.apache.calcite.linq4j.tree.Evaluator.peek(Evaluator.java:51) > at > org.apache.calcite.linq4j.tree.ParameterExpression.evaluate(ParameterExpression.java:55) > at > org.apache.calcite.linq4j.tree.GotoStatement.evaluate(GotoStatement.java:97) > at > org.apache.calcite.linq4j.tree.BlockStatement.evaluate(BlockStatement.java:83) > at org.apache.calcite.linq4j.tree.Evaluator.evaluate(Evaluator.java:55) > at > org.apache.calcite.linq4j.tree.FunctionExpression.lambda$compile$0(FunctionExpression.java:87) > at > org.apache.calcite.adapter.enumerable.RexToLixTranslatorTest.testRawTranslateRexNode(RexToLixTranslatorTest.java:57) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > at > org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) > at > org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) > at > org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) > at > org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) > at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) > at > org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) > at > org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) > at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) > at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) > at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) > at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) > at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) > at org.junit.runners.ParentRunner.run(ParentRunner.java:363) > at org.junit.runner.JUnitCore.run(JUnitCore.java:137) > at > com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) > at > com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) > at > com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) > at > com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) > {code} -- This message was sent by Atlassian Jira (v8.3.4#803005)