Jooq自定义类型与MockResult抛出DataTypeException

Question

尝试使用具有自定义类型（Joda时间）的Jooq模拟来设置单元测试时出错。 我已经在代码生成过程中注册了一个转换器。 Jooq几乎找不到/看不到该转换器，并试图依靠ConvertAll ，这是行不通的。

查询模拟结果将引发异常（如下）。

转换器：

import org.joda.time.DateTime;
import java.sql.Timestamp;

import org.joda.time.DateTimeZone;
import org.jooq.Converter;

public class DateTimeConverter implements Converter<Timestamp, DateTime> {
    @Override
    public DateTime from(Timestamp databaseObject) {
        return new DateTime(databaseObject.getTime()).withZone(DateTimeZone.UTC);
    }

    @Override
    public Timestamp to(DateTime userObject) {
        return new Timestamp(userObject.getMillis());
    }

    @Override
    public Class<Timestamp> fromType() {
        return Timestamp.class;
    }

    @Override
    public Class<DateTime> toType() {
        return DateTime.class;
    }
}

该类已成功生成：

/**
 * This class is generated by jOOQ
 */
package redacted.generated.jooq.tables;

/**
 * This class is generated by jOOQ.
 */
@javax.annotation.Generated(value    = {"http://www.jooq.org", "3.0.0"},
                            comments = "This class is generated by jOOQ")
@java.lang.SuppressWarnings({ "all", "unchecked" })
public class Bug extends org.jooq.impl.TableImpl<redacted.generated.jooq.tables.records.BugRecord> {

    private static final long serialVersionUID = 1992533553;

    /**
     * The singleton instance of <code>public.bug</code>
     */
    public static final redacted.generated.jooq.tables.Bug BUG = new redacted.generated.jooq.tables.Bug();

    /**
     * The class holding records for this type
     */
    @Override
    public java.lang.Class<redacted.generated.jooq.tables.records.BugRecord> getRecordType() {
        return redacted.generated.jooq.tables.records.BugRecord.class;
    }

    /**
     * The column <code>public.bug.testdate</code>. 
     */
    public final org.jooq.TableField<redacted.generated.jooq.tables.records.BugRecord, org.joda.time.DateTime> TESTDATE = createField("testdate", org.jooq.impl.SQLDataType.TIMESTAMP.asConvertedDataType(new name.benjaminAbbitt.jooqJodaTime.DateTimeConverter()), this);

    /**
     * The column <code>public.bug.id</code>. 
     */
    public final org.jooq.TableField<redacted.generated.jooq.tables.records.BugRecord, java.lang.Integer> ID = createField("id", org.jooq.impl.SQLDataType.INTEGER, this);

    /**
     * Create a <code>public.bug</code> table reference
     */
    public Bug() {
        super("bug", redacted.generated.jooq.Public.PUBLIC);
    }

    /**
     * Create an aliased <code>public.bug</code> table reference
     */
    public Bug(java.lang.String alias) {
        super(alias, redacted.generated.jooq.Public.PUBLIC, redacted.generated.jooq.tables.Bug.BUG);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public org.jooq.Identity<redacted.generated.jooq.tables.records.BugRecord, java.lang.Integer> getIdentity() {
        return redacted.generated.jooq.Keys.IDENTITY_BUG;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public java.util.List<org.jooq.UniqueKey<redacted.generated.jooq.tables.records.BugRecord>> getKeys() {
        return java.util.Arrays.<org.jooq.UniqueKey<redacted.generated.jooq.tables.records.BugRecord>>asList(redacted.generated.jooq.Keys.BUG_ID_KEY);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public redacted.generated.jooq.tables.Bug as(java.lang.String alias) {
        return new redacted.generated.jooq.tables.Bug(alias);
    }
}

例外是：

org.jooq.exception.DataTypeException: Cannot convert from 2014-03-05T17:57:24.668Z (class org.joda.time.DateTime) to class java.sql.Timestamp
at org.jooq.tools.Convert$ConvertAll.fail(Convert.java:809)
at org.jooq.tools.Convert$ConvertAll.from(Convert.java:747)
at org.jooq.tools.Convert.convert0(Convert.java:296)
at org.jooq.tools.Convert.convert(Convert.java:288)
at org.jooq.tools.Convert.convert(Convert.java:349)
at org.jooq.impl.AbstractRecord.getValue(AbstractRecord.java:219)
at org.jooq.tools.jdbc.MockResultSet.getValue(MockResultSet.java:383)
at org.jooq.tools.jdbc.MockResultSet.getTimestamp(MockResultSet.java:566)
at org.jooq.impl.Utils.getTimestamp(Utils.java:2195)
at org.jooq.impl.Utils.getFromResultSet(Utils.java:1952)
at org.jooq.impl.Utils.getFromResultSet(Utils.java:1881)
at org.jooq.impl.CursorImpl$CursorIterator$CursorRecordInitialiser.setValue(CursorImpl.java:1464)
at org.jooq.impl.CursorImpl$CursorIterator$CursorRecordInitialiser.operate(CursorImpl.java:1447)
at org.jooq.impl.CursorImpl$CursorIterator$CursorRecordInitialiser.operate(CursorImpl.java:1439)
at org.jooq.impl.RecordDelegate.operate(RecordDelegate.java:119)
at org.jooq.impl.CursorImpl$CursorIterator.fetchOne(CursorImpl.java:1412)
at org.jooq.impl.CursorImpl$CursorIterator.next(CursorImpl.java:1389)
at org.jooq.impl.CursorImpl$CursorIterator.next(CursorImpl.java:1353)
at org.jooq.impl.CursorImpl.fetch(CursorImpl.java:202)
at org.jooq.impl.CursorImpl.fetch(CursorImpl.java:176)
at org.jooq.impl.AbstractResultQuery.execute(AbstractResultQuery.java:268)
at org.jooq.impl.AbstractQuery.execute(AbstractQuery.java:321)
at org.jooq.impl.AbstractResultQuery.fetch(AbstractResultQuery.java:324)
at org.jooq.impl.SelectImpl.fetch(SelectImpl.java:1034)
at org.jooq.ResultQuery$fetch.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:112)
at redacted.bug.BugTest.getTest(BugTest.groovy:47)

BugTest.groovy：

public class BugTest {
    @Test
    public void getTest() {

        DSLContext testContext = setupDSL(new MockDataProvider() {
            @Override
            public MockResult[] execute(MockExecuteContext ctx) throws SQLException {
                DSLContext create = DSL.using(SQLDialect.POSTGRES)
                def result = create.newResult(BUG)

                result.add(create.newRecord(BUG, [id: 0, testdate: new DateTime()]))

                [new MockResult(result.size(), result)]
            }
        })

        testContext.select().from(BUG).fetch()  //this line fails
    }

    private DSLContext setupDSL(MockDataProvider provider) {
        MockConnection connection = new MockConnection(provider)
        return DSL.using(connection, SQLDialect.POSTGRES)
    }
}

Answer 1

这是错误＃5771 。 从jOOQ 3.9.0开始，在通过JDBC API公开之前， MockResultSet不会使用转换器将用户定义类型<U> （ DateTime ）还原为JDBC /数据库类型<T> （ Timestamp ）。 如果不使用转换器，jOOQ不知道如何执行此转换，因此是一个例外。

正确的行为应为：

• 您使用<U> （ DateTime ）值创建结果。
• jOOQ的MockResultSet使用您的转换器将<U>转换为<T> （ Timestamp ），然后再将该值通过JDBC API传递
• jOOQ的ResultQuery从JDBC API获取<T>
• jOOQ使用您的转换器再次将<T>转换回<U>

解决方法：

目前，您不应在MockResult放置任何用户定义的类型，而应仅使用JDBC Timestamp类型（并且不生成引用用户定义类型的列）