111 lines
2.5 KiB
Go
111 lines
2.5 KiB
Go
package main
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import (
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"context"
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"database/sql"
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"fmt"
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"log"
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"strconv"
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_ "github.com/denisenkom/go-mssqldb"
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)
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var connectionString = "server=192.168.1.2;Port=1433;database=DB_s439397;trusted_connection=yes;encrypt=disable"
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var db *sql.DB
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var err error
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func testConnection() {
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db, err = sql.Open("sqlserver", connectionString)
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if err != nil {
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log.Fatal("Error creating connection pool: ", err.Error())
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}
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//ctx := context.Background()
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err = db.Ping()
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//err = db.PingContext(ctx)
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if err != nil {
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log.Fatal(err.Error())
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}
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fmt.Printf("Connected!\n")
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}
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type iHasValue interface{}
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type values []iHasValue
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// ODCZYT Z BAZY DANYCH BEZ SORTOWANIA
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func readDatabase(command string, tableName string) (iDatabaseModels, error) {
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ctx := context.Background()
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checkIsDatabaseAlive()
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rows, _ := db.QueryContext(ctx, command)
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defer rows.Close()
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var models iDatabaseModels
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models = nil
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switch tableName {
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case "Lekarze":
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var x doctors
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models = x.readModels(rows)
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case "Pacjenci":
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var x patients
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models = x.readModels(rows)
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case "Operacje":
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var x operations
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models = x.readModels(rows)
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case "Diagnozy":
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var x diagnoses
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models = x.readModels(rows)
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case "Przyjecia":
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var x admissions
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models = x.readModels(rows)
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case "Sale":
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var x rooms
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models = x.readModels(rows)
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}
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return models, nil
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}
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func updateRecord(tableName string, primaryKey string,
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primaryKeyName string, fieldToUpdate string, valueToInsert string) string {
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ctx := context.Background()
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checkIsDatabaseAlive()
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if valueToInsert == "null" {
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valueToInsert = "NULL"
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} else {
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valueToInsert = "'" + valueToInsert + "'"
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}
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tsql := "UPDATE " + tableName + " SET " + fieldToUpdate + " = " + valueToInsert +
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" WHERE " + primaryKeyName + " = '" + primaryKey + "'"
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result, er := db.ExecContext(ctx, tsql)
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if er == nil {
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toReturn, _ := result.RowsAffected()
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return (strconv.FormatInt(toReturn, 10))
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}
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return "ERROR"
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}
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func insertRecord(command string) string {
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ctx := context.Background()
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checkIsDatabaseAlive()
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result, er := db.ExecContext(ctx, command)
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if er == nil {
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toReturn, _ := result.RowsAffected()
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return (strconv.FormatInt(toReturn, 10))
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}
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return "ERROR"
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}
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func deleteRecord(command string) string {
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ctx := context.Background()
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checkIsDatabaseAlive()
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result, _ := db.ExecContext(ctx, command)
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toReturn, _ := result.RowsAffected()
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return (strconv.FormatInt(toReturn, 10))
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}
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func checkIsDatabaseAlive() error {
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err = db.Ping()
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if err != nil {
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log.Fatal(err.Error())
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}
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return nil
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}
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