Java 04

Java JDBC Accesso al database Davide Ficano [email_address]

Cosa è JDBC ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Cosa fa JDBC ,[object Object],[object Object],[object Object]

Come si usa JDBC ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

I passi da eseguire DriverManager Driver Connection Statement ResultSet

JDBC Registrazione Driver ,[object Object],[object Object],public static void main(String[] args) throws Exception { Class. forName ( JDBC_DRIVER ).newInstance(); ... ... } ,[object Object]

JDBC Apertura connessione /1 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

JDBC Apertura connessione /2 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

La URL JDBC ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Eseguire uno statement ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Interfaccia java.sql.Statement ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Alcuni metodi dell'interfaccia java.sql.Statement ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Interfaccia java.sql.ResultSet ,[object Object],[object Object],[object Object]

Alcuni metodi di java.sql.ResultSet ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Chiusura risorse ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Esempio di select completo ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Esercizio /1 SELECT JDBC ,[object Object],[object Object],[object Object],[object Object],Nome = fido descrizione = canide Nome = polly descrizione = uccello Nome = silvestro descrizione = felino Nome = titty descrizione = uccello

Non solo select /1 Statement.executeUpdate ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Non solo select /2 executeUpdate ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Esercizio /2 UPDATE JDBC ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Indipendenza dal database /1 ,[object Object],[object Object],[object Object],[object Object]

Indipendenza dal database /2 ,[object Object],[object Object],[object Object],[object Object],[object Object],"select * from Animale where nome = '" + nome + "'" "delete from animale where fk_tipo = 'cavallo'" "insert into animale (nome, fk_tipo) values ('furia', 'cavallo');"

Indipendenza dal database /3 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Indipendenza dal database /3 Connection.PreparedStatement ,[object Object],[object Object],[object Object],[object Object],[object Object]

Indipendenza dal database /4 Connection.PreparedStatement ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Esercizio /3 Utilizzare PreparedStatement ,[object Object]

Oggetti VO e DAO ,[object Object],[object Object],[object Object],[object Object],[object Object]

Oggetti VO /1 Value Object ,[object Object],[object Object],[object Object],[object Object]

Oggetti VO /2 Value Object ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Oggetti DAO /1 Data Access Object ,[object Object],[object Object],[object Object],[object Object],[object Object]

Oggetti DAO /2 Data Access Object ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Esercizio /4 VO e DAO ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Java 04

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