DBUnit - 完整性约束违规:外键无动作; SYS_FK_10556

Question

我目前正在使用dbunit进行编码测试(使用hsqldb).但是,我在初始化db时遇到了很大的问题:

这是代码:

/**
     * Init before a test starts
     */
    @Before
    public void initialise() {
        IDataSet dataSetRating = null;
        IDataSet dataSetMovie = null;

        log.info("enter init test");

        try {
            con = datasource.getConnection();
            icon = new DatabaseConnection(con);
            File rating = new File("./src/test/resources/startDatabaseRating.xml");         
            dataSetRating = new FlatXmlDataSetBuilder().build(rating);
            DatabaseOperation.CLEAN_INSERT.execute(icon, dataSetRating);
        } catch (Exception e) {
            e.printStackTrace();
            log.error(e);
            System.exit(-1);
        }
    }

我的create语句看起来像这样:

CREATE TABLE Rating
(
    rid INTEGER GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    mid INTEGER FOREIGN KEY REFERENCES Movie(movieId), 
    rating INTEGER NOT NULL, 
);

我的startDatabaseRating.xml看起来像这样:

<?xml version="1.0" encoding="UTF-8"?>
<dataset>
    <Rating rid="0" mid="0" rating="1" />
    <Rating rid="1" mid="0" rating="2" />
    <Rating rid="2" mid="0" rating="3" />
    <Rating rid="3" mid="0" rating="4" />

    <Movie movieid="0" title="Movie1" moviePath="C" />
    <Movie movieid="1" title="Movie2" moviePath="D" />
</dataset> 

当我运行测试时,我得到:

java.sql.SQLIntegrityConstraintViolationException:完整性约束违规:外键无动作; SYS_FK_10556表:评分

为什么我会得到此异常,因为*.xml文件中仍有数据集.如何解决这个问题？

更新:

CREATE TABLE Movie
(
    movieId INTEGER GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    title VARCHAR(255) NOT NULL,
    moviePath VARCHAR(500) NOT NULL
);

Answer 1

插入评级时,引用的影片必须已存在于movie表格中.所以你以错误的顺序插入行.

你需要先插入电影,然后再评分.

<?xml version="1.0" encoding="UTF-8"?>
<dataset>
    <Movie movieid="0" title="Movie1" moviePath="C" />
    <Movie movieid="1" title="Movie2" moviePath="D" />

    <Rating rid="0" mid="0" rating="1" />
    <Rating rid="1" mid="0" rating="2" />
    <Rating rid="2" mid="0" rating="3" />
    <Rating rid="3" mid="0" rating="4" />
</dataset>