expression

Jun 28, 2022

Changes in this version

+ type AbstractExpression struct

+ type AggregateValueExpression struct

+ func (a *AggregateValueExpression) Evaluate(tuple *tuple.Tuple, schema *schema.Schema) types.Value

+ func (a *AggregateValueExpression) EvaluateAggregate(group_bys []*types.Value, aggregates []*types.Value) types.Value

+ func (a *AggregateValueExpression) EvaluateJoin(left_tuple *tuple.Tuple, left_schema *schema.Schema, right_tuple *tuple.Tuple, ...) types.Value

+ func (a *AggregateValueExpression) GetChildAt(child_idx uint32) Expression

+ func (a *AggregateValueExpression) GetReturnType() types.TypeID

+ type ColumnValue struct

+ func (c *ColumnValue) Evaluate(tuple *tuple.Tuple, schema *schema.Schema) types.Value

+ func (c *ColumnValue) EvaluateAggregate(group_bys []*types.Value, aggregates []*types.Value) types.Value

+ func (c *ColumnValue) EvaluateJoin(left_tuple *tuple.Tuple, left_schema *schema.Schema, right_tuple *tuple.Tuple, ...) types.Value

+ func (c *ColumnValue) GetChildAt(child_idx uint32) Expression

+ func (c *ColumnValue) GetReturnType() types.TypeID

+ func (c *ColumnValue) SetColIndex(colIndex uint32)

+ func (c *ColumnValue) SetReturnType(valueType types.TypeID)

+ func (c *ColumnValue) SetTupleIndex(tupleIndex uint32)

+ type Comparison struct

+ func (c *Comparison) Evaluate(tuple_ *tuple.Tuple, schema_ *schema.Schema) types.Value

+ func (c *Comparison) EvaluateAggregate(group_bys []*types.Value, aggregates []*types.Value) types.Value

+ func (c *Comparison) EvaluateJoin(left_tuple *tuple.Tuple, left_schema *schema.Schema, right_tuple *tuple.Tuple, ...) types.Value

+ func (c *Comparison) GetChildAt(child_idx uint32) Expression

+ func (c *Comparison) GetComparisonType() ComparisonType

+ func (c *Comparison) GetLeftSideColIdx() uint32

+ func (c *Comparison) GetRightSideValue(tuple_ *tuple.Tuple, schema_ *schema.Schema) types.Value

+ func (c *Comparison) SetChildAt(child_idx uint32, child Expression)

+ type ComparisonType int

+ const Equal

+ const GreaterThan

+ const GreaterThanOrEqual

+ const LessThan

+ const LessThanOrEqual

+ const NotEqual

+ type ConstantValue struct

+ func (c *ConstantValue) Evaluate(tuple *tuple.Tuple, schema *schema.Schema) types.Value

+ func (c *ConstantValue) EvaluateAggregate(group_bys []*types.Value, aggregates []*types.Value) types.Value

+ func (c *ConstantValue) EvaluateJoin(left_tuple *tuple.Tuple, left_schema *schema.Schema, right_tuple *tuple.Tuple, ...) types.Value

+ func (c *ConstantValue) GetChildAt(child_idx uint32) Expression

+ type Expression interface

+ Evaluate func(*tuple.Tuple, *schema.Schema) types.Value

+ EvaluateAggregate func([]*types.Value, []*types.Value) types.Value

+ EvaluateJoin func(*tuple.Tuple, *schema.Schema, *tuple.Tuple, *schema.Schema) types.Value

+ GetChildAt func(uint32) Expression

+ func NewAggregateValueExpression(is_group_by_term bool, term_idx uint32, ret_type types.TypeID) Expression

+ func NewColumnValue(tupleIndex uint32, colIndex uint32, colType types.TypeID) Expression

+ func NewComparison(left Expression, right Expression, comparisonType ComparisonType, ...) Expression

+ func NewConstantValue(value types.Value, colType types.TypeID) Expression

+ func NewLogicalOp(left Expression, right Expression, logicalOpType LogicalOpType, ...) Expression

+ type LogicalOp struct

+ func (c *LogicalOp) Evaluate(tuple *tuple.Tuple, schema *schema.Schema) types.Value

+ func (c *LogicalOp) EvaluateAggregate(group_bys []*types.Value, aggregates []*types.Value) types.Value

+ func (c *LogicalOp) EvaluateJoin(left_tuple *tuple.Tuple, left_schema *schema.Schema, right_tuple *tuple.Tuple, ...) types.Value

+ func (c *LogicalOp) GetChildAt(child_idx uint32) Expression

+ func (c *LogicalOp) GetLogicalOpType() LogicalOpType

+ func (c *LogicalOp) SetChildAt(child_idx uint32, child Expression)

+ type LogicalOpType int

+ const AND

+ const NOT

+ const OR