JavaFX的，铸造的ArrayList到ObservableList [英] JavaFX, Casting ArrayList to ObservableList

问题描述

有没有办法投的ArrayList到ObservableList？我想做到这一点，而无需通过迭代的ArrayList

到BI更具体的，我使用ORMLite从数据库中获取的数据，我需要ObservableList的方法从数据库提取数据的输出。

Currettnly我做这样的事情：

 的ArrayList＆LT; Stavka＆GT; listStavaka =新的ArrayList＆LT; Stavka＆GT;（）;
    道＆LT; Stavka，整数GT; stavkaDao = DaoManager.createDao（连接，Stavka.class）;
    listStavaka =（ArrayList的＆LT; Stavka＆GT;）stavkaDao.queryForAll（）;
    ObservableList＆LT; Stavka＆GT; oListStavaka = FXCollections.observableArrayList（）;
    对于（Stavka stavka：listStavaka）{
        oListStavaka.add（stavka）;
    }
 

和我愿做这样的事情：

  ObservableList＆LT; Stavka＆GT; listStavaka = FXCollections.observableArrayList（）;
    道＆LT; Stavka，整数GT; stavkaDao = DaoManager.createDao（连接，Stavka.class）;
    listStavaka =（ObservableList＆所述; Stavka＆GT）stavkaDao.queryForAll（）;
 

解决方案

您可以做

  ObservableList＆LT; Stavka＆GT; oListStavaka = FXCollections.observableArrayList（listStavaka）;
 

Is there a way to cast ArrayList to ObservableList? I would like to do it without iterating through ArrayList.

To bi more specific, I am using ORMLite to get data from database, and I need ObservableList as an output of method fetching data from DB.

Currettnly I am doing something like this:

    ArrayList<Stavka> listStavaka = new ArrayList<Stavka>(); 
    Dao<Stavka, Integer> stavkaDao = DaoManager.createDao(connection, Stavka.class);
    listStavaka = (ArrayList<Stavka>)stavkaDao.queryForAll();
    ObservableList<Stavka> oListStavaka = FXCollections.observableArrayList();
    for (Stavka stavka : listStavaka) {
        oListStavaka.add(stavka);
    }

And I would like to do something like this:

    ObservableList<Stavka> listStavaka = FXCollections.observableArrayList();
    Dao<Stavka, Integer> stavkaDao = DaoManager.createDao(connection, Stavka.class);
    listStavaka = (ObservableList<Stavka>)stavkaDao.queryForAll();

解决方案

You can do

ObservableList<Stavka> oListStavaka = FXCollections.observableArrayList(listStavaka);

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