从3迁移到Hibernate 5

Question

我正在从3迁移到Hibernate 5.0.3.final。在3.x中，我使用joda-time在oracle DB中持久化LocalDateTime。现在我看到Hibernate5不支持Joda-Time。请告诉我最好的选择是什么？

下面是代码示例。

import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.LocalDateTime;

public class ComponentHistory {

  @Column(name = EntityConstants.CREATED_BY_COLUMN_NAME)
  private String createdBy;

  @Column(name = EntityConstants.CREATED_DATE_COLUMN_NAME)
  @Type(type = "org.joda.time.contrib.hibernate.PersistentLocalDateTime")
  private LocalDateTime createdDate;

  @Column(name = EntityConstants.UPDATED_BY_COLUMN_NAME)
  private String updatedBy;

  @Column(name = EntityConstants.UPDATED_DATE_COLUMN_NAME)
  @Type(type = "org.joda.time.contrib.hibernate.PersistentLocalDateTime")
  private LocalDateTime updatedDate;

Answer 1

我从Hibernate4迁移到5，所以可能适合您，我所做的是删除所有Joda时间依赖项，并将类替换为新的Java日期Api，如下所示。

从约达时间开始

@Type(type="org.jadira.usertype.dateandtime.joda.PersistentLocalDateTime")
private LocalDateTime startDate;

@Type(type="org.jadira.usertype.dateandtime.joda.PersistentDateTime")
private DateTime creationDate;

到Java 8日期

@Type(type="org.hibernate.type.LocalDateTimeType")
private java.time.LocalDateTime startDate;

@Type(type="org.hibernate.type.ZonedDateTimeType")
private java.time.ZonedDateTime creationDate;

删除maven依赖项（如果有的话）

    <dependency>
        <groupId>joda-time</groupId>
        <artifactId>joda-time-hibernate</artifactId>
        <version>1.3</version>
    </dependency>

    <dependency>
        <groupId>joda-time</groupId>
        <artifactId>joda-time</artifactId>
        <version>2.3</version>
    </dependency>

    <dependency>
        <groupId>org.jadira.usertype</groupId>
        <artifactId>usertype.core</artifactId>
        <version>3.1.0.CR8</version>
    </dependency>

并添加hibernate-java8

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-java8</artifactId>
        <version>5.0.4.Final</version>
    </dependency>