quds_db

Quds Db

Is an automated version of sqflite!

How to use

1. To create a model

Model classes should extend DbModel class. Define the schema of your model, Supported field type:

Integers	Strings	DateTimes	Others
IdField	StringField	DateTimeField (saved as num)	BlobField
IntField		DateTimeStringField (Saved as string)	BoolField
NumField			JsonField ListField
DoubleField			ColorField
			EnumField

class Note extends DbModel {
  var title = StringField(columnName: 'title');
  var content = StringField(columnName: 'content');
  var isImportant = BoolField(columnName: 'isImportant');
  var color = ColorField(columnName: 'color');

  @override
  List<FieldWithValue>? getFields() => [title, content, isImportant, color];
}

Note that: Every model has default fields:

• id (Auto incremental integer field)
• creationTime (automatically set once when created)
• modificationTime (automatically set when created, and with every update operation)

2. To create a table manager

class NotesProvider extends DbTableProvider<Note> {
  NotesProvider() : super(() => Note());

  @override
  String get tableName => 'Notes';
}

As shown, to set the name of the table:

  @override
  String get tableName => 'Notes';

Note that: In provider class constructor, you should provide it with model object creation function.

  NotesProvider() : super(() => Note());

To create a provider instance,

NotesProvider notesProvider = NotesProvider();

3. Crud operations:

Creation: (Insertion)

single:

    Note n = Note();
    n.title.value = 'New note';
    n.content.value = 'Note content, describe your self';
    n.isImportant.value = ([true, false]..shuffle()).first;
    n.color.value = ([Colors.red, Colors.blue, Colors.yellow, Colors.orange]
          ..shuffle())
        .first;

    await notesProvider.insertEntry(n);

multiple:

    await notesProvider.insertCollection([n1,n2,n3,...]);

Reading (Query):

var allNotes = await notesProvider.select();
var importantNotes = await notesProvider.select(where:(n)=>n.isImportant.isTrue);
var imortantRed = await notesProvider.select(where:(n)=>n.isImportant.isTrue & n.color.equals(Color(0xffff0000)));

Updating:

n.title = 'new title';
await notesProvider.updateEntry(n);

Deletion:

await notesProvider.deleteEntry(n);

Monitoring changes:

To handle the changes in some table:

  notesProvider.addEntryChangeListner((changeType, entry) {
      switch (changeType) {
        case EntryChangeType.Insertion:
          //New Note added (entry)
          break;
        case EntryChangeType.Deletion:
          //(entry) has been deleted
          break;
        case EntryChangeType.Modification:
          //(entry) has been modified
          break;
      }
    });

Database location:

Where are the data being stored? By default, your data will be saved in app data folder / 'data.db', and to change it:

  DbHelper.mainDbPath = 'your db path';

And if you want to save a table in other file:

class NotesProvider extends DbTableProvider<Note> {
  NotesProvider()
      : super(() => Note(), specialDbFile: 'your specified file path');

  @override
  String get tableName => 'Notes';
}