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| public class MySQLiteHelper extends SQLiteOpenHelper{
protected final static int DATABASE_VERSION = 1;
protected final static String DATABASE_NAME= "funcocktail.db";
//----------------- TABLE COCKTAIL-------------------//
protected final static String TABLE_COCKTAIL="Cocktail2";
protected final static String COCKTAIL_KEY_ID="idC";
protected final static String COCKTAIL_NOM="nom";
protected final static String COCKTAIL_DESCRIPTION="description";
protected final static String[] TABLE_COCKTAIL_COLUMNS={COCKTAIL_KEY_ID,COCKTAIL_NOM,COCKTAIL_DESCRIPTION};
//----------------- TABLE INGREDIENT-------------------//
protected final static String TABLE_INGREDIENT="Ingredient2";
protected final static String INGREDIENT_KEY_ID="idI";
protected final static String INGREDIENT_NOM="nom";
protected final static String[] TABLE_INGREDIENT_COLUMNS={INGREDIENT_KEY_ID,INGREDIENT_NOM};
//----------------- TABLE RECETTE-------------------//
protected final static String TABLE_RECETTE="Recette2";
protected final static String RECETTE_KEY_ID_ING="id_ing";
protected final static String RECETTE_KEY_COCK="id_cock";
protected final static String RECETTE_QUANTIE="quantite";
protected final static String[] TABLE_RECETTE_COLUMNS={RECETTE_KEY_ID_ING,RECETTE_KEY_COCK};
public MySQLiteHelper(Context context) {
super(context,DATABASE_NAME,null,DATABASE_VERSION);
// TODO Auto-generated constructor stub
}
@Override
public void onCreate(SQLiteDatabase db) {
String CREATE_COCKTAIL_TABLE = "CREATE TABLE Cocktail2 ( " +
"idC INTEGER PRIMARY KEY AUTOINCREMENT, " +
"nom TEXT, "+
"description TEXT )";
String CREATE_INGREDIENT_TABLE = "CREATE TABLE Ingredient2 ( " +
"idI INTEGER PRIMARY KEY AUTOINCREMENT, " +
"nom TEXT )";
String CREATE_RECETTE_TABLE = "CREATE TABLE Recette2 ( " +
"id_ing INTEGER NOT NULL REFERENCES Ingredient2 , " +
"id_cock INTEGER NOT NULL REFERENCES Cocktail2 , " +
"quantite INTEGER, " +
"PRIMARY KEY ("+RECETTE_KEY_ID_ING+","+RECETTE_KEY_COCK+"), "+
"FOREIGN KEY("+RECETTE_KEY_ID_ING+") REFERENCES "+TABLE_INGREDIENT+" ("+INGREDIENT_KEY_ID+"), " +
"FOREIGN KEY("+RECETTE_KEY_COCK+") REFERENCES "+TABLE_COCKTAIL+" ("+COCKTAIL_KEY_ID+") )";
// create table
db.execSQL(CREATE_COCKTAIL_TABLE);
db.execSQL(CREATE_INGREDIENT_TABLE);
db.execSQL(CREATE_RECETTE_TABLE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldV, int newV) {
db.execSQL("DROP TABLE IF EXISTS Cocktail2");
db.execSQL("DROP TABLE IF EXISTS Ingredient2");
db.execSQL("DROP TABLE IF EXISTS Recette2");
this.onCreate(db);
}
/*------------------------- Cocktail ------------------------ */
// ---------------CRUD------------//
public void AddCocktail(Cocktail c1){
Log.d("logAddC", c1.toString());
// 1. get reference to writable DB
SQLiteDatabase db = this.getWritableDatabase();
// 2. create ContentValues to add key "column"/value
ContentValues values = new ContentValues();
values.put(COCKTAIL_NOM, c1.getNomCocktail()); // get title
values.put(COCKTAIL_DESCRIPTION, c1.getDescription()); // get author
// 3. insert
db.insert(TABLE_COCKTAIL, // table
null, //nullColumnHack
values); // key/value -> keys = column names/ values = column values
// 4. close
db.close();
}
public Cocktail getCocktail(int id){
// 1. get reference to readable DB
SQLiteDatabase db = this.getReadableDatabase();
// 2. build query
Cursor cursor =
db.query(TABLE_COCKTAIL, // a. table
TABLE_COCKTAIL_COLUMNS, // b. column names
" id = ?", // c. selections
new String[] { String.valueOf(id) }, // d. selections args
null, // e. group by
null, // f. having
null, // g. order by
null); // h. limit
// 3. if we got results get the first one
if (cursor != null)
cursor.moveToFirst();
// 4. build book object
Cocktail c1 = new Cocktail();
c1.setID(Integer.parseInt(cursor.getString(0)));
c1.setNom(cursor.getString(1));
c1.setDescription(cursor.getString(2));
Log.d("getCocktail("+id+")", c1.toString());
// 5. return book
return c1;
}
/*------------------------- Ingredient ------------------------ */
// ---------------CRUD------------//
public void addIngredient(Ingredient ing) {
Log.e("LogAddI", ing.toString());
// 1. get reference to writable DB
SQLiteDatabase db = this.getWritableDatabase();
// 2. create ContentValues to add key "column"/value
// if (getIngredient(ing.getId())==null){
ContentValues values = new ContentValues();
values.put(INGREDIENT_NOM, ing.getNom()); // get name
// 3. insert
db.insert(TABLE_INGREDIENT,// table
null,//nullColumnHack
values); // key/value -> keys = column names/ values = column values
//}
// 4. close
db.close();
}
public Ingredient getIngredient(int id){
// 1. get reference to readable DB
SQLiteDatabase db = this.getReadableDatabase();
// 2. build query
Cursor cursor =
db.query(TABLE_INGREDIENT, // a. table
TABLE_INGREDIENT_COLUMNS, // b. column names
" id = ?", // c. selections
new String[] { String.valueOf(id) }, // d. selections args
null, // e. group by
null, // f. having
null, // g. order by
null); // h. limit
// 3. if we got results get the first one
if (cursor != null)
cursor.moveToFirst();
// 4. build book object
Ingredient i1 = new Ingredient();
i1.setID(Integer.parseInt(cursor.getString(0)));
i1.setNom(cursor.getString(1));
Log.d("getIng("+id+")", i1.toString());
// 5. return book
return i1;
}
//-------OPREATION RECETTE-------------------------//
public void AddRecette(Ingredient i,Cocktail c , int qte){
// 1. get reference to writable DB
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(RECETTE_KEY_ID_ING, i.getId()); // get ID ING
values.put(RECETTE_KEY_COCK, c.getId()); // get ID ING
values.put(RECETTE_QUANTIE, qte);
// 3. insert
db.insert(TABLE_RECETTE,// table
null,//nullColumnHack
values); // key/value -> keys = column names/ values = column values
//}
// 4. close
db.close();
}
// pour la selection des recettes de l'utilisateur
public ArrayList<Recette> getAllRecettes() {
// 1. get reference to readable DB
SQLiteDatabase db = this.getReadableDatabase();
Cursor c = db.query(true, TABLE_RECETTE, new String[] {
RECETTE_KEY_ID_ING,RECETTE_KEY_COCK,RECETTE_QUANTIE}, null, null, null, null, null,
null);// ok
return cursorToAllRecettes(c);
}
public ArrayList<Recette> cursorToAllRecettes(Cursor c) {
ArrayList<Recette> maListe = new ArrayList<Recette>();
if (c.getCount() == 0) {
return null;
}
c.moveToFirst();
for (int i = 0; i < c.getCount(); i++) {
Recette r = new Recette();
r.setID_ingredient(Integer.parseInt(c.getString(0)));
r.setID_cocktail(Integer.parseInt(c.getString(1)));
r.setQte(Integer.parseInt(c.getString(2)));
maListe.add(r);
c.moveToNext();
}
c.close();
return maListe;
}
////////////////////////////////////////////////////////////////////////////// LA METHODE QUI NE MARCHE PAS
public ArrayList<String> getBDCocktailCorrespond(){//recette = cocktail ing = ing necessiter recette
String requete ="select distinct "+
COCKTAIL_NOM+
" from "+
TABLE_COCKTAIL+
" where "+
COCKTAIL_KEY_ID+
" not in " +
"(select distinct " +
COCKTAIL_KEY_ID+
" from "+
TABLE_COCKTAIL+
" join "+TABLE_RECETTE+
" on "+COCKTAIL_KEY_ID+"="+
RECETTE_KEY_COCK+
" join "+TABLE_INGREDIENT+
" on "+INGREDIENT_KEY_ID
+"="+RECETTE_KEY_ID_ING +" where "+INGREDIENT_KEY_ID +" in (2,3)); ";
//GINtONIC N'A NI RHUM(2), NI MENTHE(3)
// 1. get reference to readable DB
SQLiteDatabase db = this.getReadableDatabase();
Cursor c = db.rawQuery(requete, null);
return cursor(c);
}
public ArrayList<String> cursor(Cursor c) {
ArrayList<String> maListe = new ArrayList<String>();
if (c.getCount() == 0) {
return null;
}
c.moveToFirst();
for (int i = 0; i < c.getCount(); i++) {
String n =c.getString(0);
maListe.add(n);
c.moveToNext();
}
c.close();
return maListe;
}
}
Dans mon activité :
db.AddCocktail(new Cocktail("ginTonic", "description du gin"));
db.AddCocktail(new Cocktail("mojito", "description du mojito"));
db.addIngredient(new Ingredient("gin"));
db.addIngredient(new Ingredient("menthe"));
db.addIngredient(new Ingredient("rhum"));
Cocktail c = db.getCocktail(1);//GINTONIC
db.AddRecette(i1,c,2);
textView2.setText(db.getBDCocktailCorrespond().get(0).toString()); |
Requête imbriquée en SQLite
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