The motivation is that users usually need to define what partitions/ files to select in some DSL, where the filter is expressed as a form of the string, but the underlying engine is Java based.
On Thu, Jul 25, 2024 at 2:07 PM Pucheng Yang <[email protected]> wrote: > Hi Steve, > > Thanks for sharing, unfortunately, this is not what I am looking for. I am > looking for something like String of "dt = '2024-07-25' AND hr = '10'" to > an expression of Expressions.and(Expressions.equal("dt", "2024-07-25"), > Expressions.equal("hr", "10"). Similar to parser.parse() in iceberg-python > repo > https://github.com/apache/iceberg-python/blob/dd8d76d04f2d1c6c8192b83df9e84cee05ad5545/pyiceberg/expressions/parser.py#L268 > > Thanks > Pucheng > > > > On Thu, Jul 25, 2024 at 1:26 PM Steve Zhang > <[email protected]> wrote: > >> Hey Pucheng, >> >> can you share a bit more on the motivation? Last time I checked there’s >> method in ExpressionParser allow you to convert json of string type to >> iceberg expression in here, not sure if this is what you need: >> https://github.com/apache/iceberg/blob/caf03aed926665014c22cc4a68902bf684f258f9/core/src/main/java/org/apache/iceberg/expressions/ExpressionParser.java#L262-L264 >> >> >> Thanks, >> Steve Zhang >> >> >> >> On Jul 25, 2024, at 11:54 AM, Pucheng Yang <[email protected]> >> wrote: >> >> Hi dev community, >> >> If I read the codebase correctly, there seems to be no utility for >> converting String to an Expression, anyone be interested if we have one? >> >> I can help if the community thinks this is a good addition, I will need >> some guidance on how to get this started though. >> >> Thanks >> >> >>
