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Set statement refactor.

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This commit is contained in:
go-jet 2019-07-01 19:41:49 +02:00
parent 461911889a
commit ab0f790bc3
5 changed files with 239 additions and 194 deletions
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151
select_statement.go
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@ -28,6 +28,13 @@ type SelectStatement interface {
OFFSET(offset int64) SelectStatement
FOR(lock SelectLock) SelectStatement
UNION(rhs SelectStatement) SelectStatement
UNION_ALL(rhs SelectStatement) SelectStatement
INTERSECT(rhs SelectStatement) SelectStatement
INTERSECT_ALL(rhs SelectStatement) SelectStatement
EXCEPT(rhs SelectStatement) SelectStatement
EXCEPT_ALL(rhs SelectStatement) SelectStatement
AsTable(alias string) ExpressionTable
projections() []projection
@ -39,6 +46,7 @@ func SELECT(projection1 projection, projections ...projection) SelectStatement {
type selectStatementImpl struct {
expressionInterfaceImpl
parent SelectStatement
table ReadableTable
distinct bool
@ -46,8 +54,8 @@ type selectStatementImpl struct {
where BoolExpression
groupBy []groupByClause
having BoolExpression
orderBy []OrderByClause
orderBy []OrderByClause
limit, offset int64
lockFor SelectLock
@ -63,13 +71,86 @@ func newSelectStatement(table ReadableTable, projections []projection) SelectSta
}
newSelect.expressionInterfaceImpl.parent = newSelect
newSelect.parent = newSelect
return newSelect
}
func (s *selectStatementImpl) FROM(table ReadableTable) SelectStatement {
s.table = table
return s
return s.parent
}
func (s *selectStatementImpl) AsTable(alias string) ExpressionTable {
return newExpressionTable(s.parent, alias, s.parent.projections())
}
func (s *selectStatementImpl) WHERE(expression BoolExpression) SelectStatement {
s.where = expression
return s.parent
}
func (s *selectStatementImpl) GROUP_BY(groupByClauses ...groupByClause) SelectStatement {
s.groupBy = groupByClauses
return s.parent
}
func (s *selectStatementImpl) HAVING(expression BoolExpression) SelectStatement {
s.having = expression
return s.parent
}
func (s *selectStatementImpl) ORDER_BY(clauses ...OrderByClause) SelectStatement {
s.orderBy = clauses
return s.parent
}
func (s *selectStatementImpl) OFFSET(offset int64) SelectStatement {
s.offset = offset
return s.parent
}
func (s *selectStatementImpl) LIMIT(limit int64) SelectStatement {
s.limit = limit
return s.parent
}
func (s *selectStatementImpl) DISTINCT() SelectStatement {
s.distinct = true
return s.parent
}
func (s *selectStatementImpl) FOR(lock SelectLock) SelectStatement {
s.lockFor = lock
return s.parent
}
func (s *selectStatementImpl) UNION(rhs SelectStatement) SelectStatement {
return UNION(s.parent, rhs)
}
func (s *selectStatementImpl) UNION_ALL(rhs SelectStatement) SelectStatement {
return UNION_ALL(s.parent, rhs)
}
func (s *selectStatementImpl) INTERSECT(rhs SelectStatement) SelectStatement {
return INTERSECT(s.parent, rhs)
}
func (s *selectStatementImpl) INTERSECT_ALL(rhs SelectStatement) SelectStatement {
return INTERSECT_ALL(s.parent, rhs)
}
func (s *selectStatementImpl) EXCEPT(rhs SelectStatement) SelectStatement {
return EXCEPT(s.parent, rhs)
}
func (s *selectStatementImpl) EXCEPT_ALL(rhs SelectStatement) SelectStatement {
return EXCEPT_ALL(s.parent, rhs)
}
func (s *selectStatementImpl) projections() []projection {
return s.projectionList
}
func (s *selectStatementImpl) serialize(statement statementType, out *queryData, options ...serializeOption) error {
@ -192,56 +273,26 @@ func (s *selectStatementImpl) Sql() (query string, args []interface{}, err error
}
func (s *selectStatementImpl) DebugSql() (query string, err error) {
return debugSql(s)
return debugSql(s.parent)
}
func (s *selectStatementImpl) projections() []projection {
return s.projectionList
func (s *selectStatementImpl) Query(db execution.DB, destination interface{}) error {
return query(s.parent, db, destination)
}
func (s *selectStatementImpl) AsTable(alias string) ExpressionTable {
return newExpressionTable(s.parent, alias, s.projectionList)
func (s *selectStatementImpl) QueryContext(db execution.DB, context context.Context, destination interface{}) error {
return queryContext(s.parent, db, context, destination)
}
func (s *selectStatementImpl) WHERE(expression BoolExpression) SelectStatement {
s.where = expression
return s
func (s *selectStatementImpl) Exec(db execution.DB) (res sql.Result, err error) {
return exec(s.parent, db)
}
func (s *selectStatementImpl) GROUP_BY(groupByClauses ...groupByClause) SelectStatement {
s.groupBy = groupByClauses
return s
func (s *selectStatementImpl) ExecContext(db execution.DB, context context.Context) (res sql.Result, err error) {
return execContext(s.parent, db, context)
}
func (s *selectStatementImpl) HAVING(expression BoolExpression) SelectStatement {
s.having = expression
return s
}
func (s *selectStatementImpl) ORDER_BY(clauses ...OrderByClause) SelectStatement {
s.orderBy = clauses
return s
}
func (s *selectStatementImpl) OFFSET(offset int64) SelectStatement {
s.offset = offset
return s
}
func (s *selectStatementImpl) LIMIT(limit int64) SelectStatement {
s.limit = limit
return s
}
func (s *selectStatementImpl) DISTINCT() SelectStatement {
s.distinct = true
return s
}
func (s *selectStatementImpl) FOR(lock SelectLock) SelectStatement {
s.lockFor = lock
return s
}
// SelectLock
type SelectLock interface {
clause
@ -288,19 +339,3 @@ func (s *selectLockImpl) serialize(statement statementType, out *queryData, opti
return nil
}
func (s *selectStatementImpl) Query(db execution.DB, destination interface{}) error {
return query(s, db, destination)
}
func (s *selectStatementImpl) QueryContext(db execution.DB, context context.Context, destination interface{}) error {
return queryContext(s, db, context, destination)
}
func (s *selectStatementImpl) Exec(db execution.DB) (res sql.Result, err error) {
return exec(s, db)
}
func (s *selectStatementImpl) ExecContext(db execution.DB, context context.Context) (res sql.Result, err error) {
return execContext(s, db, context)
}