From 77fabc995d159fa4cc97f214a07d787c6a27d99b Mon Sep 17 00:00:00 2001
From: Trang Nguyen <thi_huyen_trang.nguyen@student.reutlingen-university.de>
Date: Tue, 17 Nov 2020 16:23:31 +0100
Subject: [PATCH] add database to database_provide.dart
---
rescueapp/lib/bloc_patient/patient_bloc.dart | 36 ++++++
rescueapp/lib/database/database_provide.dart | 108 ++++++++++++++++++
rescueapp/lib/events-patient/add_patient.dart | 10 ++
.../lib/events-patient/delete_patient.dart | 9 ++
.../lib/events-patient/patient_event.dart | 1 +
rescueapp/lib/events-patient/set_patient.dart | 10 ++
.../lib/events-patient/update_patient.dart | 14 +++
7 files changed, 188 insertions(+)
create mode 100644 rescueapp/lib/bloc_patient/patient_bloc.dart
create mode 100644 rescueapp/lib/database/database_provide.dart
create mode 100644 rescueapp/lib/events-patient/add_patient.dart
create mode 100644 rescueapp/lib/events-patient/delete_patient.dart
create mode 100644 rescueapp/lib/events-patient/patient_event.dart
create mode 100644 rescueapp/lib/events-patient/set_patient.dart
create mode 100644 rescueapp/lib/events-patient/update_patient.dart
diff --git a/rescueapp/lib/bloc_patient/patient_bloc.dart b/rescueapp/lib/bloc_patient/patient_bloc.dart
new file mode 100644
index 0000000..95321ac
--- /dev/null
+++ b/rescueapp/lib/bloc_patient/patient_bloc.dart
@@ -0,0 +1,36 @@
+
+
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:rescueapp/events-patient/add_patient.dart';
+import 'package:rescueapp/events-patient/delete_patient.dart';
+import 'package:rescueapp/events-patient/patient_event.dart';
+import 'package:rescueapp/events-patient/set_patient.dart';
+import 'package:rescueapp/events-patient/update_patient.dart';
+import 'package:rescueapp/model-patient/patient.dart';
+
+class PatientBloc extends Bloc<PatientEvent, List<Patient>> {
+ @override
+ List<Patient> get initialState => List<Patient>();
+// events wird definiert durch PatientEvent.
+ // mapEventToState wird aufgerufen um das bestimmte event mit einem bestimmten status zu definieren
+ @override
+ Stream<List<Patient>> mapEventToState(PatientEvent event) async* {
+ if (event is SetPatient) {
+ yield event.patientList;
+ } else if (event is AddPatient) {
+ List<Patient> newState = List.from(state);
+ if (event.newPatient != null) {
+ newState.add(event.newPatient);
+ }
+ yield newState;
+ } else if (event is DeletePatient) {
+ List<Patient> newState = List.from(state);
+ newState.removeAt(event.patientIndex);
+ yield newState;
+ } else if (event is UpdatePatient) {
+ List<Patient> newState = List.from(state);
+ newState[event.patientIndex] = event.newPatient;
+ yield newState;
+ }
+ }
+}
\ No newline at end of file
diff --git a/rescueapp/lib/database/database_provide.dart b/rescueapp/lib/database/database_provide.dart
new file mode 100644
index 0000000..b4f47c1
--- /dev/null
+++ b/rescueapp/lib/database/database_provide.dart
@@ -0,0 +1,108 @@
+
+import 'package:path/path.dart';
+import 'package:rescueapp/model-patient/patient.dart';
+import 'package:sqflite/sqflite.dart';
+import 'package:sqflite/sqlite_api.dart';
+
+//Einige asynchronous Operationen sind:
+// Daten über ein Netzwerk abrufen
+// Eine Datenbank zu schreiben
+//Asynchronisierung
+// Daten aus einem File lesen: Async means that this function is asynchronous and you might need to wait a bit to get its result.
+// Await literally means - wait here until this function is finished and you will get its return value.
+class DatabaseProvider {
+ static const String TABLE_PATIENT = "patient";
+ static const String COLUMN_ID = "id";
+ static const String COLUMN_NAME = "name";
+ static const String COLUMN_BIRTHDAY = "geburtsdatum";
+ static const String COLUMN_ISAMBILATORY = "isGehfähig";
+ static const String COLUMN_IMAGEPATH = "imagePath";
+ static const String COLUMN_CATEGORIE = "category";
+
+// Constructor
+ DatabaseProvider._();
+ static final DatabaseProvider db = DatabaseProvider._();
+
+ Database _database;
+
+ Future <Database> get database async {
+ print("database getter called");
+
+ if (_database != null) {
+ return _database;
+ }
+
+ _database = await createDatabase();
+
+ return _database;
+ }
+
+ Future<Database> createDatabase() async {
+ String dbPath = await getDatabasesPath();
+
+ return await openDatabase(
+ join(dbPath, 'patientDB.db'),
+ version: 1,
+ onCreate: (Database database, int version) async {
+ print("Creating patient table");
+
+ await database.execute(
+ "CREATE TABLE $TABLE_PATIENT ("
+ "$COLUMN_ID INTEGER PRIMARY KEY,"
+ "$COLUMN_NAME TEXT,"
+ "$COLUMN_BIRTHDAY TEXT,"
+ "$COLUMN_ISAMBILATORY INTEGER,"
+ "$COLUMN_IMAGEPATH STRING,"
+ "$COLUMN_CATEGORIE STRING,"
+
+
+ ")",
+ );
+ },
+ );
+ }
+
+ Future<List<Patient>> getPatients() async {
+ final db = await database;
+
+ var patients = await db
+ .query(TABLE_PATIENT, columns: [COLUMN_ID, COLUMN_NAME, COLUMN_IMAGEPATH,COLUMN_BIRTHDAY, COLUMN_ISAMBILATORY, COLUMN_CATEGORIE]);
+
+ List<Patient> patientList = List<Patient>();
+
+ patients.forEach((currentPatient) {
+ Patient patient = Patient.fromMap(currentPatient);
+
+ patientList.add(patient);
+ });
+
+ return patientList;
+ }
+
+ Future<Patient> insert(Patient patient) async {
+ final db = await database;
+ patient.id = await db.insert(TABLE_PATIENT, patient.toMap());
+ return patient;
+ }
+
+ Future<int> delete(int id) async {
+ final db = await database;
+
+ return await db.delete(
+ TABLE_PATIENT,
+ where: "id = ?",
+ whereArgs: [id],
+ );
+ }
+
+ Future<int> update(Patient patient) async {
+ final db = await database;
+
+ return await db.update(
+ TABLE_PATIENT,
+ patient.toMap(),
+ where: "id = ?",
+ whereArgs: [patient.id],
+ );
+ }
+}
\ No newline at end of file
diff --git a/rescueapp/lib/events-patient/add_patient.dart b/rescueapp/lib/events-patient/add_patient.dart
new file mode 100644
index 0000000..0401323
--- /dev/null
+++ b/rescueapp/lib/events-patient/add_patient.dart
@@ -0,0 +1,10 @@
+import 'package:rescueapp/events-patient/patient_event.dart';
+import 'package:rescueapp/model-patient/patient.dart';
+
+class AddPatient extends PatientEvent {
+ Patient newPatient;
+
+ AddPatient(Patient patient) {
+ newPatient = patient;
+ }
+}
diff --git a/rescueapp/lib/events-patient/delete_patient.dart b/rescueapp/lib/events-patient/delete_patient.dart
new file mode 100644
index 0000000..f01bc37
--- /dev/null
+++ b/rescueapp/lib/events-patient/delete_patient.dart
@@ -0,0 +1,9 @@
+import 'package:rescueapp/events-patient/patient_event.dart';
+
+class DeletePatient extends PatientEvent {
+ int patientIndex;
+
+ DeletePatient(int index) {
+ patientIndex = index;
+ }
+}
\ No newline at end of file
diff --git a/rescueapp/lib/events-patient/patient_event.dart b/rescueapp/lib/events-patient/patient_event.dart
new file mode 100644
index 0000000..5859e1e
--- /dev/null
+++ b/rescueapp/lib/events-patient/patient_event.dart
@@ -0,0 +1 @@
+abstract class PatientEvent {}
\ No newline at end of file
diff --git a/rescueapp/lib/events-patient/set_patient.dart b/rescueapp/lib/events-patient/set_patient.dart
new file mode 100644
index 0000000..edc8e89
--- /dev/null
+++ b/rescueapp/lib/events-patient/set_patient.dart
@@ -0,0 +1,10 @@
+import 'package:rescueapp/events-patient/patient_event.dart';
+import 'package:rescueapp/model-patient/patient.dart';
+
+class SetPatient extends PatientEvent {
+ List<Patient> patientList;
+
+ SetPatient(List<Patient> patient) {
+ patientList = patient;
+ }
+}
\ No newline at end of file
diff --git a/rescueapp/lib/events-patient/update_patient.dart b/rescueapp/lib/events-patient/update_patient.dart
new file mode 100644
index 0000000..3f59f86
--- /dev/null
+++ b/rescueapp/lib/events-patient/update_patient.dart
@@ -0,0 +1,14 @@
+import 'package:rescueapp/events-patient/patient_event.dart';
+import 'package:rescueapp/model-patient/patient.dart';
+
+
+
+class UpdatePatient extends PatientEvent {
+ Patient newPatient;
+ int patientIndex;
+
+ UpdatePatient(int index, Patient patient) {
+ newPatient = patient;
+ patientIndex = index;
+ }
+}
\ No newline at end of file
--
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