Thankyou so much for your reply.Muhammad .
I find a solution: serializing my custom filter object to byte[], then call org.apache.calcite.linq4j.tree.Expressions.constant()， it works! At 2019-05-07 21:34:57, "Muhammad Gelbana" <[email protected]> wrote: >I think it might be easier/cleaner to have the filter as an input to a >project having the expression processing the filter's output. I don't know >if it's possible to have the operatr as an input to an expression. > >Thanks, >Gelbana > > >On Tue, May 7, 2019 at 1:09 PM Maria <[email protected]> wrote: > >> Hi, all. >> I have one custom type called 'x.xx.xxx.EsSqlFilter', and I want to >> convert it to Expression type, then pass the instance obj to a function >> through Expressions.call(), then it can be used in the specified function >> call，I tryed to use 'Expressions.newArrayInit(clazz, constantList(values))' >> to convert it, but it became a new Object with nothing in the function， all >> the attribute values are lost. >> I am newbie with linq4J. and got bogged down in this question. >> Can someone give me an suggestion？ Any reply will be much appreciated. >> >> >> Best Wishes.
