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Christian Haudum 94b1d2d5ce chore(engine): Improve type system of the new query engine (#17456) ... **What this PR does / why we need it**: The original type system for the new engine was introduced before adding Apache Arrow and with that an additional type system. One aspect of the new type system of this PR is that the logical types of the engine are aligned/interchangeable with the arrow logical types. ```go type Type uint8 const ( NULL = Type(arrow.NULL) BOOL = Type(arrow.BOOL) STRING = Type(arrow.STRING) INT64 = Type(arrow.INT64) FLOAT64 = Type(arrow.FLOAT64) ) ``` The actual data types of Loki (`Boolean`, `String`, `Integer`, `Float`, `Timestamp`, `Duration`, and `Bytes`) are implemented as wrapper around a logical type. Different data types can use the same logical type as representation, such as `Integer`, `Timestamp` and `Duration` both use `INT64`. Since Arrow array types are bound to logical types, and one logical type can have multiple Loki data types, it is required to "annotate" Fields of an arrow.Record using its Metadata, similar to how it is done for distinguishing builtin columns from label/metadata/parsed columns. Additionally, the PR contains a mapping between Loki types and Arrow types. The `Literal` has been updated to use the new types. The old system also used UINT64 as representation of the `Timestamp` type, which is incorrect, since both LogQL and the DataObjects allow timestamps before unix epoch. --- Signed-off-by: Christian Haudum <christian.haudum@gmail.com>		1 year ago
..
dataobjscan.go	chore(engine): provide basic implementation of DataObjScan (#17568)	1 year ago
dataobjscan_predicate.go	chore(engine): provide basic implementation of DataObjScan (#17568)	1 year ago
dataobjscan_test.go	chore(engine): provide basic implementation of DataObjScan (#17568)	1 year ago
executor.go	chore(engine): provide basic implementation of DataObjScan (#17568)	1 year ago
executor_test.go	chore(engine): provide basic implementation of DataObjScan (#17568)	1 year ago
expressions.go	chore(engine): Improve type system of the new query engine (#17456)	1 year ago
expressions_test.go	chore(engine): Improve type system of the new query engine (#17456)	1 year ago
filter.go	feat(dataobj, executor): filter node execution (#17327)	1 year ago
filter_test.go	chore(engine): Improve type system of the new query engine (#17456)	1 year ago
functions.go	chore(engine): Add framework for function evaluation (#17374)	1 year ago
limit.go	chore(dataobj,testing,executor): pipeline equality testing (#17311)	1 year ago
limit_test.go	chore(dataobj,testing,executor): pipeline equality testing (#17311)	1 year ago
pipeline.go	chore(engine): Add framework for query executor (#17260)	1 year ago
pipeline_test.go	chore(engine): Collect pipeline records into Loki result (#17447)	1 year ago
pipeline_utils.go	chore(engine): Collect pipeline records into Loki result (#17447)	1 year ago
pipeline_utils_test.go	chore(engine): provide basic implementation of DataObjScan (#17568)	1 year ago
project.go	chore(engine): Improve type system of the new query engine (#17456)	1 year ago
project_test.go	chore(engine): Improve type system of the new query engine (#17456)	1 year ago
sortmerge.go	chore(engine): Improve type system of the new query engine (#17456)	1 year ago
sortmerge_test.go	chore(engine): Improve type system of the new query engine (#17456)	1 year ago
util_test.go	chore(engine): Improve type system of the new query engine (#17456)	1 year ago