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)
