/**
* 删除记录
*
* @param clazz
* @param where where语句
* @return 返回true执行成功，否则执行失败
*/
public boolean delete(Class<?> clazz, String where) {
if (testSQLiteDatabase()) {
SqlBuilder getSqlBuilder =
SqlBuilderFactory.getInstance().getSqlBuilder(SqlBuilderFactory.DELETE);
getSqlBuilder.setClazz(clazz);
getSqlBuilder.setCondition(false, where, null, null, null, null);
return execute(getSqlBuilder);
} else {
return false;
}
}
/**
* 更新记录
*
* @param entity 更新的数据
* @param where where语句
* @return
*/
public boolean update(Object entity, String where) {
if (testSQLiteDatabase()) {
SqlBuilder getSqlBuilder =
SqlBuilderFactory.getInstance().getSqlBuilder(SqlBuilderFactory.UPDATE);
getSqlBuilder.setEntity(entity);
getSqlBuilder.setCondition(false, where, null, null, null, null);
return execute(getSqlBuilder);
} else {
return false;
}
}
/**
* 执行查询，主要是SELECT, SHOW 等指令 返回数据集
*
* @param clazz
* @param distinct 限制重复，如过为true则限制,false则不用管
* @param where where语句
* @param groupBy groupBy语句
* @param having having语句
* @param orderBy orderBy语句
* @param limit limit语句
* @return
*/
@SuppressWarnings("unchecked")
public <T> List<T> query(
Class<?> clazz,
boolean distinct,
String where,
String groupBy,
String having,
String orderBy,
String limit) {
if (testSQLiteDatabase()) {
List<T> list = null;
SqlBuilder getSqlBuilder =
SqlBuilderFactory.getInstance().getSqlBuilder(SqlBuilderFactory.SELECT);
getSqlBuilder.setClazz(clazz);
getSqlBuilder.setCondition(distinct, where, groupBy, having, orderBy, limit);
try {
String sqlString = getSqlBuilder.getSqlStatement();
CHLogger.i(SQLiteDB.this, "执行" + sqlString);
free();
this.queryCursor = mSQLiteDatabase.rawQuery(sqlString, null);
list = (List<T>) DBUtils.getListEntity(clazz, this.queryCursor);
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
CHLogger.e(SQLiteDB.this, e.getMessage());
e.printStackTrace();
} catch (CHDBException e) {
// TODO Auto-generated catch block
CHLogger.e(SQLiteDB.this, e.getMessage());
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
CHLogger.e(SQLiteDB.this, e.getMessage());
e.printStackTrace();
}
return list;
} else {
return null;
}
}