gsp-graphql-sql/edu.gemini.grackle.sql/SqlMapping/AliasState

AliasState

case class AliasState(next: Int, seenTables: Set[String], tableAliases: Map[(List[String], String), String], seenColumns: Set[String], columnAliases: Map[(List[String], String), String], ownerChain: List[ColumnOwner])

State required to assign table and column aliases.

Used when rendering an SqlQuery as a Fragment. Table aliases are assigned as needed for recursive queries. Column aliases are assigned to disambiguate collections of columns generated by subqueries and unions.

Companion:
object
trait Serializable
trait Product
trait Equals
class Object
trait Matchable
class Any

Value members

Concrete methods

def columnDef(column: SqlColumn): (AliasState, (Option[String], String))

Update state to reflect a defining occurence of a column

Update state to reflect a defining occurence of a column

def columnRef(column: SqlColumn): (AliasState, (Option[String], String))

Yields the possibly aliased name of the supplied column

Yields the possibly aliased name of the supplied column

def popOwner: (AliasState, ColumnOwner)

Update state to restore the current column owner while traversing the SqlQuery being rendered

Update state to restore the current column owner while traversing the SqlQuery being rendered

def pushOwner(owner: ColumnOwner): (AliasState, Unit)

Update state to reflect the current column owner while traversing the SqlQuery being rendered

Update state to reflect the current column owner while traversing the SqlQuery being rendered

def tableDef(table: TableExpr): (AliasState, String)

Update state to reflect a defining occurence of a table

Update state to reflect a defining occurence of a table

def tableRef(table: TableExpr): (AliasState, String)

Yields the possibly aliased name of the supplied table

Yields the possibly aliased name of the supplied table

Inherited methods

def productIterator: Iterator[Any]
Inherited from:
Product