Created locale database contract and helper

app/src/main/java/org/communiquons/android/comunic/client/data/DatabaseContract.java

@@ -0,0 +1,32 @@
+package org.communiquons.android.comunic.client.data;
+
+import android.provider.BaseColumns;
+
+/**
+ * Database contract schema. Contains the structure of the application database
+ *
+ * @author Pierre HUBERT
+ * Created by pierre on 11/2/17.
+ */
+
+public final class DatabaseContract {
+
+    //Empty constructor : avoid accidentally instantiations of the class
+    public DatabaseContract(){}
+
+    /* Database basic information */
+    public static final int DATABASE_VERSION = 1;
+    public static final String DATABASE_NAME = "database.db";
+
+    /* Users info table */
+    public static abstract class UsersInfo implements BaseColumns {
+        public static final String TABLE_NAME = "users_info";
+
+        public static final String COLUMN_NAME_USER_ID = "user_id";
+        public static final String COLUMN_NAME_USER_FIRSTNAME = "first_name";
+        public static final String COLUMN_NAME_USER_LASTNAME = "last_name";
+        public static final String COLUMN_NAME_USER_ACCOUNT_IMAGE = "account_image";
+
+    }
+
+}

app/src/main/java/org/communiquons/android/comunic/client/data/DatabaseHelper.java

@@ -0,0 +1,73 @@
+package org.communiquons.android.comunic.client.data;
+
+import android.content.Context;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+
+import org.communiquons.android.comunic.client.data.DatabaseContract.UsersInfo;
+
+/**
+ * Database helper. This file handles the creation / upgrade of the local database
+ *
+ * @author Pierre HUBERT
+ * Created by pierre on 11/2/17.
+ */
+
+public class DatabaseHelper extends SQLiteOpenHelper {
+
+    /**
+     * Generic definitions
+     */
+    private static final String TEXT_TYPE = " TEXT";
+    private static final String INTEGER_TYPE = " INTEGER";
+    private static final String COMMA_SEP = ",";
+
+    /**
+     * Creation and deletion of the users info table
+     */
+    private static final String SQL_CREATE_USERS_INFOS_TABLE =
+            "CREATE TABLE " + UsersInfo.TABLE_NAME + " (" +
+                    UsersInfo._ID + " INTEGER PRIMARY KEY," +
+                    UsersInfo.COLUMN_NAME_USER_ID + INTEGER_TYPE + COMMA_SEP +
+                    UsersInfo.COLUMN_NAME_USER_FIRSTNAME + TEXT_TYPE + COMMA_SEP +
+                    UsersInfo.COLUMN_NAME_USER_LASTNAME + TEXT_TYPE + COMMA_SEP +
+                    UsersInfo.COLUMN_NAME_USER_ACCOUNT_IMAGE + TEXT_TYPE
+            + " )";
+
+    private static final String SQL_DELETE_USERS_INFOS_TABLE = "DROP TABLE IF EXISTS " +
+            UsersInfo.TABLE_NAME;
+
+
+
+
+
+    /**
+     * Public constructor
+     * @param context The context where the database is used
+     */
+    public DatabaseHelper(Context context){
+        super(context, DatabaseContract.DATABASE_NAME, null, DatabaseContract.DATABASE_VERSION);
+    }
+
+    /**
+     * Handles database creation
+     * @param db The database
+     */
+    @Override
+    public void onCreate(SQLiteDatabase db) {
+        //Create user informations table
+        db.execSQL(SQL_CREATE_USERS_INFOS_TABLE);
+    }
+
+    @Override
+    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+        //Delete users informations table
+        db.execSQL(SQL_DELETE_USERS_INFOS_TABLE);
+        onCreate(db);
+    }
+
+    @Override
+    public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+        onUpgrade(db, oldVersion, newVersion);
+    }
+}