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Feature/project leaf operator #8
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bec1b3b
feat(ProjectExecCSV) Implement csv reader that transforms csv file in…
334c0c5
feat:InmemoryProject Operator.this provide a base for easy mock testi…
7159b86
removed json as datasource
a9de3db
feature:ParquetSource operator is implemented
98b55f3
feat: Implement s3 file reader & file downloader
6ee5178
feat:Implement Project operator | tested on top source operators
e7e9d82
chore: add next steps. Looking at Expr and Filter operators
f97e73b
chore: add next steps. Looking at Expr and Filter operators
86b1e3c
fix:revised PR
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,7 +1,24 @@ | ||
| package filter | ||
|
|
||
| // handle Bitwise operations here as well | ||
| import ( | ||
| "github.com/apache/arrow/go/v17/arrow" | ||
| "github.com/apache/arrow/go/v17/arrow/array" | ||
| ) | ||
|
|
||
| // OR | ||
| // AND | ||
| // NOT | ||
| // FilterExpr takes in a field and column and yeilds a function that takes in an index and returns a bool indicating whether the row at that index satisfies the filter condition. | ||
| type FilterExpr func(filed arrow.Field, col arrow.Array) func(i int) bool | ||
|
|
||
| // example | ||
| func ExampleFilterExpr(field arrow.Field, col arrow.Array) func(i int) bool { | ||
| { | ||
| if field.Name == "age" && col.DataType().ID() == arrow.INT32 { | ||
| return func(i int) bool { | ||
| val := col.(*array.Int32).Value(i) | ||
| return val > 30 | ||
| } | ||
| } | ||
| return func(i int) bool { | ||
| return true | ||
| } | ||
| } | ||
| } |
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