TestXLiteDatabaseActivity.java

package com.nuchwezi.nulabs;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;

import com.nuchwezi.xlitedatabase.DBAdapter; // <-- get the DAL

public class TestXLiteDatabaseActivity extends AppCompatActivity {

    // we shall use the XLiteDatabase layer for managing an in-app data cache
    DBAdapter dbAdapter;
	
	// Have some keys that will be used to store or read stuff from the XLDB dictionary-like interface
	 public class CACHE_KEYS {
        public static final String VARIABLE_A = "A";
        public static final String VARIABLE_B = "B";
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
		
		// initialize the XLDAL
		dbAdapter = new DBAdapter(this);
        dbAdapter.open();
		
		// EXAMPLE 1: Store a strings into the XLDB
		String someValue = "TESTING";
		dbAdapter.cacheSET(CACHE_KEYS.VARIABLE_A, "testing"); // store literal string
		dbAdapter.cacheSET(CACHE_KEYS.VARIABLE_B, someValue); // store referenced string
		

        // EXAMPLE 2: Fetch a string from the XLDB
        assert ("testing".equals(dbAdapter.cacheGET(CACHE_KEYS.VARIABLE_A)));
        assert (someValue.equals(dbAdapter.cacheGET(CACHE_KEYS.VARIABLE_B)));

        // EXAMPLE 3: Delete string from XLDB
        if(dbAdapter.cacheDELETE(CACHE_KEYS.VARIABLE_B)){
            assert (null == dbAdapter.cacheGET(CACHE_KEYS.VARIABLE_B));
        }
        // if tests passed (no errors), xlitedatabase is working fine.
    }

}