Joda-Time Hibernate support provides classes to persist Joda-Time based date and time objects to a database using Hibernate.
It is fairly easy to use this package in your Hibernate environment. There are two main options for the configuration - the hibernate mapping file or annotations.
Add the type attribute to your property configuration. e.g.:
<property type="org.joda.time.contrib.hibernate.PersistentDateTime" name="dateTime"/>
Set the type using the @org.hibernate.annotations.Type annotation. e.g.:
@Column @Type(type="org.joda.time.contrib.hibernate.PersistentDateTime") private DateTime fromDate;
Sometimes there are multiple columns to be specified, as with PersistentDateTimeTZ:
@Columns(columns={@Column(name="startTime"),@Column(name="startTimezone")})
@Type(type="org.joda.time.contrib.hibernate.PersistentDateTimeTZ")
private DateTime startDateTime;
The main types which can be persisted:
| Class | SQL Column Type(s) | Description |
|---|---|---|
| org.joda.time.contrib.hibernate.PersistentDateTime | TIMESTAMP | |
| org.joda.time.contrib.hibernate.PersistentDateTimeTZ | TIMESTAMP, VARCHAR | This persister uses two columns, to separately store the time value and its timezone |
| org.joda.time.contrib.hibernate.PersistentInstant | BIGINT | This persister uses one column to store the millisconds |
| org.joda.time.contrib.hibernate.PersistentInterval | TIMESTAMP, TIMESTAMP | This persister uses two columns, to store the start and end of the interval |
| org.joda.time.contrib.hibernate.PersistentLocalDate | TIMESTAMP | |
| org.joda.time.contrib.hibernate.PersistentLocalTimeAsTime | TIME | Depending on your Database you might loose the millisecond part |
| org.joda.time.contrib.hibernate.PersistentLocalTimeExact | INTEGER | The milliseconds are stored as simple integer value, no information loss |
| org.joda.time.contrib.hibernate.PersistentLocalTimeAsString | VARCHAR | Same as above, just uses a human readable representation. ISO8601 format - HH:mm:ss.SSSZ |
| org.joda.time.contrib.hibernate.PersistentLocalDateTime | TIMESTAMP | |
| org.joda.time.contrib.hibernate.PersistentDuration | VARCHAR | The format is PTnS where n is the value |
| org.joda.time.contrib.hibernate.PersistentPeriod | VARCHAR | The format is PnYnMnDTnHnMnS where n is the value |
The following types are now effectively deprecated, however persistence is still available:
| Class | SQL Column Type(s) | Description |
|---|---|---|
| org.joda.time.contrib.hibernate.PersistentTimeOfDay | TIME | Depending on your Database you might loose the millisecond part |
| org.joda.time.contrib.hibernate.PersistentTimeOfDayExact | INTEGER | The milliseconds are stored as simple integer value, no information loss |
| org.joda.time.contrib.hibernate.PersistentYearMonthDay | DATE |