Wang Yanlin created CALCITE-3278: ------------------------------------ Summary: 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
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 (v8.3.2#803003)