98 lines
2.7 KiB
Go
98 lines
2.7 KiB
Go
package sqlbuilder
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import "errors"
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type expressionTable interface {
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readableTable
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RefIntColumnName(name string) *IntegerColumn
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RefIntColumn(column column) *IntegerColumn
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RefStringColumn(column column) *StringColumn
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}
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type expressionTableImpl struct {
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statement expression
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alias string
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}
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// Returns the tableName's name in the database
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func (e *expressionTableImpl) SchemaName() string {
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return ""
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}
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func (e *expressionTableImpl) TableName() string {
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return e.alias
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}
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func (e *expressionTableImpl) Columns() []column {
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return []column{}
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}
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func (e *expressionTableImpl) RefIntColumnName(name string) *IntegerColumn {
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intColumn := NewIntegerColumn(name, NotNullable)
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intColumn.setTableName(e.alias)
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return intColumn
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}
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func (e *expressionTableImpl) RefIntColumn(column column) *IntegerColumn {
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intColumn := NewIntegerColumn(column.TableName()+"."+column.Name(), NotNullable)
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intColumn.setTableName(e.alias)
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return intColumn
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}
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func (e *expressionTableImpl) RefStringColumn(column column) *StringColumn {
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strColumn := NewStringColumn(column.TableName()+"."+column.Name(), NotNullable)
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strColumn.setTableName(e.alias)
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return strColumn
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}
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func (e *expressionTableImpl) serialize(statement statementType, out *queryData) error {
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if e == nil {
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return errors.New("Expression table is nil. ")
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}
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//out.writeString("( ")
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err := e.statement.serialize(statement, out)
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if err != nil {
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return err
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}
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out.writeString("AS")
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out.writeString(e.alias)
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return nil
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}
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// Generates a select query on the current tableName.
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func (e *expressionTableImpl) SELECT(projections ...projection) selectStatement {
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return newSelectStatement(e, projections)
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}
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// Creates a inner join tableName expression using onCondition.
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func (e *expressionTableImpl) INNER_JOIN(table readableTable, onCondition BoolExpression) readableTable {
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return InnerJoinOn(e, table, onCondition)
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}
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//func (s *expressionTableImpl) InnerJoinUsing(table readableTable, col1 column, col2 column) readableTable {
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// return INNER_JOIN(s, table, col1.EQ(col2))
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//}
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// Creates a left join tableName expression using onCondition.
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func (e *expressionTableImpl) LEFT_JOIN(table readableTable, onCondition BoolExpression) readableTable {
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return LeftJoinOn(e, table, onCondition)
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}
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// Creates a right join tableName expression using onCondition.
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func (e *expressionTableImpl) RIGHT_JOIN(table readableTable, onCondition BoolExpression) readableTable {
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return RightJoinOn(e, table, onCondition)
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}
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func (e *expressionTableImpl) FULL_JOIN(table readableTable, onCondition BoolExpression) readableTable {
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return FullJoin(e, table, onCondition)
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}
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func (e *expressionTableImpl) CROSS_JOIN(table readableTable) readableTable {
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return CrossJoin(e, table)
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}
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