Uses of Package
org.apache.druid.sql.calcite.expression

Packages that use org.apache.druid.sql.calcite.expression

Package	Description
org.apache.druid.sql.calcite.aggregation
org.apache.druid.sql.calcite.expression
org.apache.druid.sql.calcite.expression.builtin
org.apache.druid.sql.calcite.external
org.apache.druid.sql.calcite.planner
org.apache.druid.sql.calcite.rel
org.apache.druid.sql.calcite.table
org.apache.druid.sql.guice

Classes in org.apache.druid.sql.calcite.expression used by org.apache.druid.sql.calcite.aggregation

Class and Description

DruidExpression Represents two kinds of expression-like concepts that native Druid queries support: (1) SimpleExtractions, which are direct column access, possibly with an extractionFn (2) native Druid expressions and virtual columns When added to VirtualColumnRegistry whenever used by projections, filters, aggregators, or other query components, these will be converted into native virtual columns using DruidExpression.toVirtualColumn(String, ColumnType, ExprMacroTable) Approximate expression structure is retained in the DruidExpression.arguments, which when fed into the DruidExpression.ExpressionGenerator that all DruidExpression must be created with will produce the final String expression (which will be later parsed into Expr during native processing).

Classes in org.apache.druid.sql.calcite.expression used by org.apache.druid.sql.calcite.expression

Class and Description
DirectOperatorConversion Conversion for SQL operators that map 1-1 onto native functions.
DruidExpression Represents two kinds of expression-like concepts that native Druid queries support: (1) SimpleExtractions, which are direct column access, possibly with an extractionFn (2) native Druid expressions and virtual columns When added to VirtualColumnRegistry whenever used by projections, filters, aggregators, or other query components, these will be converted into native virtual columns using DruidExpression.toVirtualColumn(String, ColumnType, ExprMacroTable) Approximate expression structure is retained in the DruidExpression.arguments, which when fed into the DruidExpression.ExpressionGenerator that all DruidExpression must be created with will produce the final String expression (which will be later parsed into Expr during native processing).
DruidExpression.DruidExpressionCreator Create a DruidExpression given some set of input argument sub-expressions
DruidExpression.DruidExpressionShuttle
DruidExpression.ExpressionGenerator Used by DruidExpression to compile a string which can be parsed into an Expr from given the sub-expression arguments
DruidExpression.NodeType
DruidExpression.VirtualColumnCreator Used by a DruidExpression to translate itself into a VirtualColumn to add to a native query when referenced by a projection, filter, aggregator, etc.
OperatorConversions.OperatorBuilder
PostAggregatorVisitor This class serves as a tracking structure for managing post aggregator column names and any post aggs that are created as part of translation of a Calcite RexNode into native Druid structures.
SimpleExtraction Represents a "simple" extraction of a value from a Druid row, which is defined as a column plus an optional extractionFn.
SqlOperatorConversion

Classes in org.apache.druid.sql.calcite.expression used by org.apache.druid.sql.calcite.expression.builtin

Class and Description
AliasedOperatorConversion
DirectOperatorConversion Conversion for SQL operators that map 1-1 onto native functions.
DruidExpression Represents two kinds of expression-like concepts that native Druid queries support: (1) SimpleExtractions, which are direct column access, possibly with an extractionFn (2) native Druid expressions and virtual columns When added to VirtualColumnRegistry whenever used by projections, filters, aggregators, or other query components, these will be converted into native virtual columns using DruidExpression.toVirtualColumn(String, ColumnType, ExprMacroTable) Approximate expression structure is retained in the DruidExpression.arguments, which when fed into the DruidExpression.ExpressionGenerator that all DruidExpression must be created with will produce the final String expression (which will be later parsed into Expr during native processing).
SimpleExtraction Represents a "simple" extraction of a value from a Druid row, which is defined as a column plus an optional extractionFn.
SqlOperatorConversion

Classes in org.apache.druid.sql.calcite.expression used by org.apache.druid.sql.calcite.external

Class and Description
DruidExpression Represents two kinds of expression-like concepts that native Druid queries support: (1) SimpleExtractions, which are direct column access, possibly with an extractionFn (2) native Druid expressions and virtual columns When added to VirtualColumnRegistry whenever used by projections, filters, aggregators, or other query components, these will be converted into native virtual columns using DruidExpression.toVirtualColumn(String, ColumnType, ExprMacroTable) Approximate expression structure is retained in the DruidExpression.arguments, which when fed into the DruidExpression.ExpressionGenerator that all DruidExpression must be created with will produce the final String expression (which will be later parsed into Expr during native processing).
SqlOperatorConversion

Classes in org.apache.druid.sql.calcite.expression used by org.apache.druid.sql.calcite.planner

Class and Description
SqlOperatorConversion

Classes in org.apache.druid.sql.calcite.expression used by org.apache.druid.sql.calcite.rel

Class and Description
DruidExpression Represents two kinds of expression-like concepts that native Druid queries support: (1) SimpleExtractions, which are direct column access, possibly with an extractionFn (2) native Druid expressions and virtual columns When added to VirtualColumnRegistry whenever used by projections, filters, aggregators, or other query components, these will be converted into native virtual columns using DruidExpression.toVirtualColumn(String, ColumnType, ExprMacroTable) Approximate expression structure is retained in the DruidExpression.arguments, which when fed into the DruidExpression.ExpressionGenerator that all DruidExpression must be created with will produce the final String expression (which will be later parsed into Expr during native processing).
DruidExpression.DruidExpressionShuttle

Classes in org.apache.druid.sql.calcite.expression used by org.apache.druid.sql.calcite.table

Class and Description
SimpleExtraction Represents a "simple" extraction of a value from a Druid row, which is defined as a column plus an optional extractionFn.

Classes in org.apache.druid.sql.calcite.expression used by org.apache.druid.sql.guice

Class and Description
SqlOperatorConversion