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@ -20,11 +20,15 @@ import android.content.Context; |
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import android.database.Cursor; |
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import android.database.sqlite.SQLiteDatabase; |
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import android.database.sqlite.SQLiteOpenHelper; |
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import android.support.annotation.NonNull; |
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import android.text.TextUtils; |
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import android.util.Log; |
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import com.arialyy.aria.util.CheckUtil; |
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import com.arialyy.aria.util.CommonUtil; |
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import java.io.File; |
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import java.lang.reflect.Field; |
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import java.lang.reflect.Modifier; |
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import java.util.ArrayList; |
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import java.util.Date; |
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import java.util.List; |
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import java.util.Set; |
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@ -33,30 +37,30 @@ import java.util.Set; |
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* sql帮助类 |
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*/ |
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final class SqlHelper extends SQLiteOpenHelper { |
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interface UpgradeListener { |
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public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion); |
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} |
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private static final String TAG = "SqlHelper"; |
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private static final int CREATE_TABLE = 0; |
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private static final int TABLE_EXISTS = 1; |
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private static final int INSERT_DATA = 2; |
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private static final int MODIFY_DATA = 3; |
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private static final int FIND_DATA = 4; |
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private static final int FIND_ALL_DATA = 5; |
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private static final int DEL_DATA = 6; |
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private UpgradeListener mUpgradeListener; |
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static String DB_NAME; |
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static int VERSION = -1; |
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private static volatile SqlHelper INSTANCE = null; |
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private static final Object LOCK = new Object(); |
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static { |
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if (TextUtils.isEmpty(DB_NAME)) { |
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DB_NAME = "AriaLyyDb"; |
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} |
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if (VERSION == -1) { |
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VERSION = 1; |
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static SqlHelper init(Context context) { |
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if (INSTANCE == null) { |
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synchronized (LOCK) { |
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INSTANCE = new SqlHelper(context.getApplicationContext()); |
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checkTable(INSTANCE.getWritableDatabase()); |
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} |
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} |
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return INSTANCE; |
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} |
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//SqlHelper(Context context, UpgradeListener listener) {
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// super(context, DB_NAME, null, VERSION);
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// mUpgradeListener = listener;
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//}
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SqlHelper(Context context) { |
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super(context, DB_NAME, null, VERSION); |
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private SqlHelper(Context context) { |
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super(context, DBConfig.DB_NAME, null, DBConfig.VERSION); |
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} |
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@Override public void onCreate(SQLiteDatabase db) { |
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@ -64,12 +68,15 @@ final class SqlHelper extends SQLiteOpenHelper { |
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} |
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@Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { |
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try { |
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if (oldVersion < newVersion) { |
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handleDbUpdate(db); |
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} |
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} catch (ClassNotFoundException e) { |
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e.printStackTrace(); |
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if (oldVersion < newVersion) { |
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handleDbUpdate(db); |
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} |
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} |
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@Override public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) { |
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//super.onDowngrade(db, oldVersion, newVersion);
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if (oldVersion > newVersion) { |
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handleDbUpdate(db); |
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} |
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} |
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@ -78,7 +85,7 @@ final class SqlHelper extends SQLiteOpenHelper { |
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* |
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* @throws ClassNotFoundException |
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*/ |
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private void handleDbUpdate(SQLiteDatabase db) throws ClassNotFoundException { |
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private void handleDbUpdate(SQLiteDatabase db) { |
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if (db == null) { |
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Log.d("SqlHelper", "db 为 null"); |
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return; |
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@ -86,10 +93,11 @@ final class SqlHelper extends SQLiteOpenHelper { |
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Log.d("SqlHelper", "db已关闭"); |
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return; |
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} |
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Set<String> tables = DBMapping.mapping.keySet(); |
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Set<String> tables = DBConfig.mapping.keySet(); |
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for (String tableName : tables) { |
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Class clazz = Class.forName(DBMapping.mapping.get(tableName)); |
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if (DbUtil.tableExists(db, clazz)) { |
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Class clazz = DBConfig.mapping.get(tableName); |
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if (tableExists(db, clazz)) { |
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//db = checkDb(db);
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String countColumnSql = "SELECT rowid FROM " + tableName; |
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Cursor cursor = db.rawQuery(countColumnSql, null); |
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int dbColumnNum = cursor.getColumnCount(); |
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@ -105,24 +113,27 @@ final class SqlHelper extends SQLiteOpenHelper { |
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* 备份 |
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*/ |
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private void back(SQLiteDatabase db, Class clazz) { |
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db = checkDb(db); |
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String oldTableName = CommonUtil.getClassName(clazz); |
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//备份数据
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List<DbEntity> list = DbUtil.findAllData(db, clazz); |
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List<DbEntity> list = findAllData(db, clazz); |
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//修改原来表名字
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String alertSql = "alter table " + oldTableName + " rename to " + oldTableName + "_temp"; |
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db.beginTransaction(); |
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db.execSQL(alertSql); |
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//创建一个原来新表
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DbUtil.createTable(db, clazz, null); |
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for (DbEntity entity : list) { |
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DbUtil.insertData(db, entity); |
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createTable(db, clazz, null); |
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if (list != null && list.size() > 0) { |
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for (DbEntity entity : list) { |
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insertData(db, entity); |
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} |
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} |
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//删除原来的表
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String deleteSQL = "drop table IF EXISTS " + oldTableName + "_temp"; |
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db.execSQL(deleteSQL); |
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db.setTransactionSuccessful(); |
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db.endTransaction(); |
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db.close(); |
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close(db); |
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} |
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/** |
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@ -134,7 +145,7 @@ final class SqlHelper extends SQLiteOpenHelper { |
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if (fields != null && fields.length > 0) { |
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for (Field field : fields) { |
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field.setAccessible(true); |
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if (DbUtil.ignoreField(field)) { |
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if (ignoreField(field)) { |
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continue; |
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} |
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count++; |
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@ -142,4 +153,369 @@ final class SqlHelper extends SQLiteOpenHelper { |
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} |
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return count; |
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} |
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/** |
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* 检查数据库表，如果配置的表不存在，则创建新表 |
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*/ |
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static synchronized void checkTable(SQLiteDatabase db) { |
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db = checkDb(db); |
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Set<String> tables = DBConfig.mapping.keySet(); |
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for (String tableName : tables) { |
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Class clazz = null; |
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clazz = DBConfig.mapping.get(tableName); |
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if (!tableExists(db, clazz)) { |
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createTable(db, clazz, null); |
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} |
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} |
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} |
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/** |
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* 条件查寻数据 |
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*/ |
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static synchronized <T extends DbEntity> List<T> findData(SQLiteDatabase db, Class<T> clazz, |
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String... expression) { |
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db = checkDb(db); |
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CheckUtil.checkSqlExpression(expression); |
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String sql = |
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"SELECT rowid, * FROM " + CommonUtil.getClassName(clazz) + " WHERE " + expression[0] + " "; |
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sql = sql.replace("?", "%s"); |
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Object[] params = new String[expression.length - 1]; |
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for (int i = 0, len = params.length; i < len; i++) { |
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params[i] = "'" + expression[i + 1] + "'"; |
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} |
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sql = String.format(sql, params); |
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print(FIND_DATA, sql); |
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Cursor cursor = db.rawQuery(sql, null); |
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List<T> data = cursor.getCount() > 0 ? newInstanceEntity(clazz, cursor) : null; |
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close(db); |
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return data; |
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} |
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/** |
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* 条件查寻数据 |
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*/ |
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@Deprecated static synchronized <T extends DbEntity> List<T> findData(SQLiteDatabase db, |
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Class<T> clazz, @NonNull String[] wheres, @NonNull String[] values) { |
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db = checkDb(db); |
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if (wheres.length <= 0 || values.length <= 0) { |
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Log.e(TAG, "请输入查询条件"); |
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return null; |
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} else if (wheres.length != values.length) { |
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Log.e(TAG, "key 和 vaule 长度不相等"); |
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return null; |
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} |
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StringBuilder sb = new StringBuilder(); |
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sb.append("SELECT rowid, * FROM ").append(CommonUtil.getClassName(clazz)).append(" where "); |
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int i = 0; |
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for (Object where : wheres) { |
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sb.append(where).append("=").append("'").append(values[i]).append("'"); |
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sb.append(i >= wheres.length - 1 ? "" : " AND "); |
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i++; |
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} |
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print(FIND_DATA, sb.toString()); |
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Cursor cursor = db.rawQuery(sb.toString(), null); |
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List<T> data = cursor.getCount() > 0 ? newInstanceEntity(clazz, cursor) : null; |
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close(db); |
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return data; |
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} |
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/** |
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* 遍历所有数据 |
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*/ |
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static synchronized <T extends DbEntity> List<T> findAllData(SQLiteDatabase db, Class<T> clazz) { |
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db = checkDb(db); |
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StringBuilder sb = new StringBuilder(); |
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sb.append("SELECT rowid, * FROM ").append(CommonUtil.getClassName(clazz)); |
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print(FIND_ALL_DATA, sb.toString()); |
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Cursor cursor = db.rawQuery(sb.toString(), null); |
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List<T> data = cursor.getCount() > 0 ? newInstanceEntity(clazz, cursor) : null; |
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close(db); |
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return data; |
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} |
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/** |
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* 删除某条数据 |
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*/ |
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static synchronized <T extends DbEntity> void delData(SQLiteDatabase db, Class<T> clazz, |
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String... expression) { |
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db = checkDb(db); |
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CheckUtil.checkSqlExpression(expression); |
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String sql = "DELETE FROM " + CommonUtil.getClassName(clazz) + " WHERE " + expression[0] + " "; |
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sql = sql.replace("?", "%s"); |
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Object[] params = new String[expression.length - 1]; |
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for (int i = 0, len = params.length; i < len; i++) { |
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params[i] = "'" + expression[i + 1] + "'"; |
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} |
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sql = String.format(sql, params); |
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SqlHelper.print(DEL_DATA, sql); |
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db.execSQL(sql); |
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close(db); |
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} |
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/** |
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* 修改某行数据 |
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*/ |
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static synchronized void modifyData(SQLiteDatabase db, DbEntity dbEntity) { |
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db = checkDb(db); |
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Class<?> clazz = dbEntity.getClass(); |
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Field[] fields = CommonUtil.getFields(clazz); |
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if (fields != null && fields.length > 0) { |
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StringBuilder sb = new StringBuilder(); |
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sb.append("UPDATE ").append(CommonUtil.getClassName(dbEntity)).append(" SET "); |
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int i = 0; |
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for (Field field : fields) { |
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field.setAccessible(true); |
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if (SqlHelper.ignoreField(field)) { |
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continue; |
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} |
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sb.append(i > 0 ? ", " : ""); |
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try { |
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Object value = field.get(dbEntity); |
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sb.append(field.getName()) |
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.append("='") |
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.append(value == null ? "" : value.toString()) |
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.append("'"); |
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} catch (IllegalAccessException e) { |
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e.printStackTrace(); |
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} |
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i++; |
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} |
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sb.append(" where rowid=").append(dbEntity.rowID); |
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print(MODIFY_DATA, sb.toString()); |
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db.execSQL(sb.toString()); |
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} |
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close(db); |
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} |
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/** |
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* 插入数据 |
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*/ |
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static synchronized void insertData(SQLiteDatabase db, DbEntity dbEntity) { |
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db = checkDb(db); |
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Class<?> clazz = dbEntity.getClass(); |
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Field[] fields = CommonUtil.getFields(clazz); |
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if (fields != null && fields.length > 0) { |
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StringBuilder sb = new StringBuilder(); |
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sb.append("INSERT INTO ").append(CommonUtil.getClassName(dbEntity)).append("("); |
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int i = 0; |
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for (Field field : fields) { |
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field.setAccessible(true); |
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if (ignoreField(field)) { |
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continue; |
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} |
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sb.append(i > 0 ? ", " : ""); |
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sb.append(field.getName()); |
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i++; |
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} |
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sb.append(") VALUES ("); |
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i = 0; |
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for (Field field : fields) { |
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field.setAccessible(true); |
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if (ignoreField(field)) { |
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continue; |
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} |
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sb.append(i > 0 ? ", " : ""); |
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sb.append("'"); |
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try { |
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sb.append(field.get(dbEntity)).append("'"); |
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} catch (IllegalAccessException e) { |
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e.printStackTrace(); |
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} |
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i++; |
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} |
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sb.append(")"); |
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print(INSERT_DATA, sb.toString()); |
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db.execSQL(sb.toString()); |
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} |
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close(db); |
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} |
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/** |
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* 查找表是否存在 |
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* |
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* @param clazz 数据库实体 |
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* @return true，该数据库实体对应的表存在；false，不存在 |
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*/ |
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static synchronized boolean tableExists(SQLiteDatabase db, Class clazz) { |
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db = checkDb(db); |
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Cursor cursor = null; |
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try { |
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StringBuilder sb = new StringBuilder(); |
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sb.append("SELECT COUNT(*) AS c FROM sqlite_master WHERE type='table' AND name='"); |
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sb.append(CommonUtil.getClassName(clazz)); |
|
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|
|
sb.append("'"); |
|
|
|
|
print(TABLE_EXISTS, sb.toString()); |
|
|
|
|
cursor = db.rawQuery(sb.toString(), null); |
|
|
|
|
if (cursor != null && cursor.moveToNext()) { |
|
|
|
|
int count = cursor.getInt(0); |
|
|
|
|
if (count > 0) { |
|
|
|
|
return true; |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
} catch (Exception e) { |
|
|
|
|
e.printStackTrace(); |
|
|
|
|
} finally { |
|
|
|
|
if (cursor != null) cursor.close(); |
|
|
|
|
close(db); |
|
|
|
|
} |
|
|
|
|
return false; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* 创建表 |
|
|
|
|
* |
|
|
|
|
* @param clazz 数据库实体 |
|
|
|
|
* @param tableName 数据库实体的类名 |
|
|
|
|
*/ |
|
|
|
|
static synchronized void createTable(SQLiteDatabase db, Class clazz, String tableName) { |
|
|
|
|
db = checkDb(db); |
|
|
|
|
Field[] fields = CommonUtil.getFields(clazz); |
|
|
|
|
if (fields != null && fields.length > 0) { |
|
|
|
|
StringBuilder sb = new StringBuilder(); |
|
|
|
|
sb.append("create table ") |
|
|
|
|
.append(TextUtils.isEmpty(tableName) ? CommonUtil.getClassName(clazz) : tableName) |
|
|
|
|
.append("("); |
|
|
|
|
for (Field field : fields) { |
|
|
|
|
field.setAccessible(true); |
|
|
|
|
if (ignoreField(field)) { |
|
|
|
|
continue; |
|
|
|
|
} |
|
|
|
|
sb.append(field.getName()); |
|
|
|
|
Class<?> type = field.getType(); |
|
|
|
|
if (type == String.class) { |
|
|
|
|
sb.append(" varchar"); |
|
|
|
|
} else if (type == int.class || type == Integer.class) { |
|
|
|
|
sb.append(" interger"); |
|
|
|
|
} else if (type == float.class || type == Float.class) { |
|
|
|
|
sb.append(" float"); |
|
|
|
|
} else if (type == double.class || type == Double.class) { |
|
|
|
|
sb.append(" double"); |
|
|
|
|
} else if (type == long.class || type == Long.class) { |
|
|
|
|
sb.append(" bigint"); |
|
|
|
|
} else if (type == boolean.class || type == Boolean.class) { |
|
|
|
|
sb.append(" boolean"); |
|
|
|
|
} else if (type == java.util.Date.class || type == java.sql.Date.class) { |
|
|
|
|
sb.append(" data"); |
|
|
|
|
} else if (type == byte.class || type == Byte.class) { |
|
|
|
|
sb.append(" blob"); |
|
|
|
|
} else { |
|
|
|
|
continue; |
|
|
|
|
} |
|
|
|
|
sb.append(","); |
|
|
|
|
} |
|
|
|
|
String str = sb.toString(); |
|
|
|
|
str = str.substring(0, str.length() - 1) + ");"; |
|
|
|
|
print(CREATE_TABLE, str); |
|
|
|
|
db.execSQL(str); |
|
|
|
|
} |
|
|
|
|
close(db); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* 打印数据库日志 |
|
|
|
|
* |
|
|
|
|
* @param type {@link DbUtil} |
|
|
|
|
*/ |
|
|
|
|
static void print(int type, String sql) { |
|
|
|
|
if (true) { |
|
|
|
|
return; |
|
|
|
|
} |
|
|
|
|
String str = ""; |
|
|
|
|
switch (type) { |
|
|
|
|
case CREATE_TABLE: |
|
|
|
|
str = "创建表 >>>> "; |
|
|
|
|
break; |
|
|
|
|
case TABLE_EXISTS: |
|
|
|
|
str = "表是否存在 >>>> "; |
|
|
|
|
break; |
|
|
|
|
case INSERT_DATA: |
|
|
|
|
str = "插入数据 >>>> "; |
|
|
|
|
break; |
|
|
|
|
case MODIFY_DATA: |
|
|
|
|
str = "修改数据 >>>> "; |
|
|
|
|
break; |
|
|
|
|
case FIND_DATA: |
|
|
|
|
str = "查询一行数据 >>>> "; |
|
|
|
|
break; |
|
|
|
|
case FIND_ALL_DATA: |
|
|
|
|
str = "遍历整个数据库 >>>> "; |
|
|
|
|
break; |
|
|
|
|
} |
|
|
|
|
Log.v(TAG, str + sql); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* 根据数据游标创建一个具体的对象 |
|
|
|
|
*/ |
|
|
|
|
static synchronized <T extends DbEntity> List<T> newInstanceEntity(Class<T> clazz, |
|
|
|
|
Cursor cursor) { |
|
|
|
|
Field[] fields = CommonUtil.getFields(clazz); |
|
|
|
|
List<T> entitys = new ArrayList<>(); |
|
|
|
|
if (fields != null && fields.length > 0) { |
|
|
|
|
try { |
|
|
|
|
while (cursor.moveToNext()) { |
|
|
|
|
T entity = clazz.newInstance(); |
|
|
|
|
for (Field field : fields) { |
|
|
|
|
field.setAccessible(true); |
|
|
|
|
if (ignoreField(field)) { |
|
|
|
|
continue; |
|
|
|
|
} |
|
|
|
|
Class<?> type = field.getType(); |
|
|
|
|
int column = cursor.getColumnIndex(field.getName()); |
|
|
|
|
if (column == -1) continue; |
|
|
|
|
if (type == String.class) { |
|
|
|
|
field.set(entity, cursor.getString(column)); |
|
|
|
|
} else if (type == int.class || type == Integer.class) { |
|
|
|
|
field.setInt(entity, cursor.getInt(column)); |
|
|
|
|
} else if (type == float.class || type == Float.class) { |
|
|
|
|
field.setFloat(entity, cursor.getFloat(column)); |
|
|
|
|
} else if (type == double.class || type == Double.class) { |
|
|
|
|
field.setDouble(entity, cursor.getDouble(column)); |
|
|
|
|
} else if (type == long.class || type == Long.class) { |
|
|
|
|
field.setLong(entity, cursor.getLong(column)); |
|
|
|
|
} else if (type == boolean.class || type == Boolean.class) { |
|
|
|
|
field.setBoolean(entity, !cursor.getString(column).equalsIgnoreCase("false")); |
|
|
|
|
} else if (type == java.util.Date.class || type == java.sql.Date.class) { |
|
|
|
|
field.set(entity, new Date(cursor.getString(column))); |
|
|
|
|
} else if (type == byte[].class) { |
|
|
|
|
field.set(entity, cursor.getBlob(column)); |
|
|
|
|
} else { |
|
|
|
|
continue; |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
entity.rowID = cursor.getInt(cursor.getColumnIndex("rowid")); |
|
|
|
|
entitys.add(entity); |
|
|
|
|
//Log.d(TAG, "rowid ==> " + entity.rowID);
|
|
|
|
|
} |
|
|
|
|
cursor.close(); |
|
|
|
|
} catch (InstantiationException e) { |
|
|
|
|
e.printStackTrace(); |
|
|
|
|
} catch (IllegalAccessException e) { |
|
|
|
|
e.printStackTrace(); |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
return entitys; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
private static void close(SQLiteDatabase db) { |
|
|
|
|
//if (db != null && db.isOpen()) db.close();
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
private static SQLiteDatabase checkDb(SQLiteDatabase db) { |
|
|
|
|
if (db == null || !db.isOpen()) { |
|
|
|
|
db = INSTANCE.getWritableDatabase(); |
|
|
|
|
} |
|
|
|
|
return db; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* @return true 忽略该字段 |
|
|
|
|
*/ |
|
|
|
|
static boolean ignoreField(Field field) { |
|
|
|
|
// field.isSynthetic(), 使用as热启动App时，AS会自动给你的clss添加change字段
|
|
|
|
|
Ignore ignore = field.getAnnotation(Ignore.class); |
|
|
|
|
return (ignore != null && ignore.value()) || field.isSynthetic() || Modifier.isStatic( |
|
|
|
|
field.getModifiers()) || Modifier.isFinal(field.getModifiers()); |
|
|
|
|
} |
|
|
|
|
} |
AriaLyy
8 years ago