71 lines
1.6 KiB
Go
71 lines
1.6 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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readableTableInterfaceImpl
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expression Expression
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alias string
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}
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func newExpressionTable(expression Expression, alias string) expressionTable {
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expTable := &expressionTableImpl{expression: expression, alias: alias}
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expTable.readableTableInterfaceImpl.parent = expTable
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return expTable
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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) RefIntColumnName(name string) *IntegerColumn {
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intColumn := NewIntegerColumn(name, false)
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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(), false)
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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(), false)
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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, options ...serializeOption) 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.expression.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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