vm

package

v0.0.2 Latest Latest Go to latest Published: May 3, 2021 License: MIT Imports: 7 Imported by: 0

Details

Valid go.mod file

The Go module system was introduced in Go 1.11 and is the official dependency management solution for Go.
Redistributable license

Redistributable licenses place minimal restrictions on how software can be used, modified, and redistributed.
Tagged version

Modules with tagged versions give importers more predictable builds.
Stable version

When a project reaches major version v1 it is considered stable.
Learn more about best practices

This section is empty.

View Source

var (
	SqlEvalError = fmt.Errorf("Could not evaluate sql statement")
)

This section is empty.

type SqlVm struct {
	Statement expr.SqlStatement
	Keyword   lex.TokenType
	// contains filtered or unexported fields
}

SqlVm vm is a vm for parsing, evaluating a

func NewSqlVm(sqlText string) (*SqlVm, error)

SqlVm parsers a sql query into columns, where guards, etc

func (m *SqlVm) Execute(writeContext datasource.ContextWriter, readContext datasource.ContextReader) (err error)

Execute applies a parse expression to the specified context's

writeContext in the case of sql query is similar to a recordset for selects,
  or for delete, insert, update it is like the storage layer

func (m *SqlVm) ExecuteDelete(writeContext datasource.ContextWriter, readContext datasource.ContextReader) (err error)

func (m *SqlVm) ExecuteInsert(writeContext datasource.RowWriter) (err error)

func (m *SqlVm) ExecuteSelect(writeContext datasource.ContextWriter, readContext datasource.ContextReader) (err error)

Execute applies a dml sql select expression to the specified context's

writeContext in the case of sql query is similar to a recordset for selects,
  or for delete, insert, update it is like the storage layer