package expr

Import Path
	github.com/polarsignals/frostdb/query/expr (on go.dev)

Dependency Relation
	imports 8 packages, and imported by 3 packages

Involved Source Files

	    binaryscalarexpr.go
	    filter.go
Package-Level Type Names (total 9)

	/* sort by: alphabet | popularity */
	 type AlwaysTrueFilter (struct)

		Methods (only one)
			(*AlwaysTrueFilter) Eval(_ Particulate, _ bool) (bool, error)
		Implements (at least one exported)
			*AlwaysTrueFilter : TrueNegativeFilter

	 type AndExpr (struct)

		Fields (total 2)
			Left TrueNegativeFilter
			Right TrueNegativeFilter
		Methods (only one)
			(*AndExpr) Eval(p Particulate, ignoreMissingCols bool) (bool, error)
		Implements (at least one exported)
			*AndExpr : TrueNegativeFilter

	 type BinaryScalarExpr (struct)

		Fields (total 3)
			Left *ColumnRef
			Op logicalplan.Op
			Right parquet.Value
		Methods (only one)
			( BinaryScalarExpr) Eval(p Particulate, ignoreMissingCol bool) (bool, error)
		Implements (at least one exported)
			 BinaryScalarExpr : TrueNegativeFilter

	 type ColumnRef (struct)

		Fields (only one)
			ColumnName string
		Methods (only one)
			(*ColumnRef) Column(p Particulate) (parquet.ColumnChunk, bool, error)

	 type MaxAgg (struct)

		Methods (only one)
			(*MaxAgg) Eval(p Particulate, _ bool) (bool, error)
		Implements (at least one exported)
			*MaxAgg : TrueNegativeFilter

	 type OrExpr (struct)

		Fields (total 2)
			Left TrueNegativeFilter
			Right TrueNegativeFilter
		Methods (only one)
			(*OrExpr) Eval(p Particulate, ignoreMissingCols bool) (bool, error)
		Implements (at least one exported)
			*OrExpr : TrueNegativeFilter

	 type Particulate (interface)
		Particulate is an abstraction of something that can be filtered.
		A parquet.RowGroup is a particulate that is able to be filtered, and wrapping a parquet.File with
		ParquetFileParticulate allows a file to be filtered.

		Methods (total 2)
			( Particulate) ColumnChunks() []parquet.ColumnChunk
			( Particulate) Schema() *parquet.Schema
		Implemented By (at least 10)
			*github.com/polarsignals/frostdb/dynparquet.Buffer
			 github.com/polarsignals/frostdb/dynparquet.DynamicRowGroup (interface)
			*github.com/polarsignals/frostdb/dynparquet.DynamicRowGroupMergeAdapter
			 github.com/polarsignals/frostdb/dynparquet.MergedRowGroup
			 github.com/polarsignals/frostdb/dynparquet.PooledBuffer
			 github.com/polarsignals/frostdb/index.ReleaseableRowGroup (interface)
			*github.com/parquet-go/parquet-go.Buffer
			*github.com/parquet-go/parquet-go.GenericBuffer[...]
			*github.com/parquet-go/parquet-go.RowBuffer[...]
			 github.com/parquet-go/parquet-go.RowGroup (interface)
		As Inputs Of (at least 7)
			func (*AlwaysTrueFilter).Eval(_ Particulate, _ bool) (bool, error)
			func (*AndExpr).Eval(p Particulate, ignoreMissingCols bool) (bool, error)
			func BinaryScalarExpr.Eval(p Particulate, ignoreMissingCol bool) (bool, error)
			func (*ColumnRef).Column(p Particulate) (parquet.ColumnChunk, bool, error)
			func (*MaxAgg).Eval(p Particulate, _ bool) (bool, error)
			func (*OrExpr).Eval(p Particulate, ignoreMissingCols bool) (bool, error)
			func TrueNegativeFilter.Eval(p Particulate, ignoreMissingCols bool) (bool, error)

	 type PreExprVisitorFunc (func)

		Methods (total 3)
			( PreExprVisitorFunc) PostVisit(_ logicalplan.Expr) bool
			( PreExprVisitorFunc) PreVisit(expr logicalplan.Expr) bool
			( PreExprVisitorFunc) Visit(_ logicalplan.Expr) bool
		Implements (at least one exported)
			 PreExprVisitorFunc : github.com/polarsignals/frostdb/query/logicalplan.Visitor

	 type TrueNegativeFilter (interface)

		Methods (only one)
			( TrueNegativeFilter) Eval(p Particulate, ignoreMissingCols bool) (bool, error)
				Eval should be safe to call concurrently.

		Implemented By (at least 5)
			*AlwaysTrueFilter
			*AndExpr
			 BinaryScalarExpr
			*MaxAgg
			*OrExpr
		As Outputs Of (at least one exported)
			func BooleanExpr(expr logicalplan.Expr) (TrueNegativeFilter, error)
		As Inputs Of (at least one exported)
			func github.com/polarsignals/frostdb.(*DefaultObjstoreBucket).ProcessFile(ctx context.Context, blockDir string, lastBlockTimestamp uint64, filter TrueNegativeFilter, callback func(context.Context, any) error) error


Package-Level Functions (total 5)

	 func BinaryScalarOperation(left parquet.ColumnChunk, right parquet.Value, operator logicalplan.Op) (bool, error)
		BinaryScalarOperation applies the given operator between the given column
		chunk and value. If BinaryScalarOperation returns true, it means that the
		operator may be satisfied by at least one value in the column chunk. If it
		returns false, it means that the operator will definitely not be satisfied
		by any value in the column chunk.

	 func BooleanExpr(expr logicalplan.Expr) (TrueNegativeFilter, error)
	 func Max(columnIndex parquet.ColumnIndex) parquet.Value
		Max returns the maximum value found in the column chunk across all pages.

	 func Min(columnIndex parquet.ColumnIndex) parquet.Value
		Min returns the minimum value found in the column chunk across all pages.

	 func NullCount(columnIndex parquet.ColumnIndex) int64
Package-Level Variables (only one)

	  var ErrUnsupportedBinaryOperation error

The pages are generated with Golds v0.8.2. (GOOS=linux GOARCH=amd64)
Golds is a Go 101 project developed by Tapir Liu.
PR and bug reports are welcome and can be submitted to the issue list.
Please follow @zigo_101 (reachable from the left QR code) to get the latest news of Golds.