Null Date and Time Problem

Question

I created my entity classes from a database by using netbeans 6.0 and I'm using H2 as a database. I've the following table in my database.
CREATE CACHED TABLE OPEN_TABLE ( ID INTEGER GENERATED BY DEFAULT AS IDENTITY(START WITH 0) NOT NULL PRIMARY KEY, TABLE_ID INTEGER, WAITER_ID INTEGER, OPEN_HOUR TIME DEFAULT CURRENT_TIME, OPEN_DATE DATE DEFAULT CURRENT_DATE );
and here is the entity class netbeans created for me.
import java.io.Serializable; import java.util.Date; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.NamedQueries; import javax.persistence.NamedQuery; import javax.persistence.Table; import javax.persistence.Temporal; import javax.persistence.TemporalType; /** * * @author Yupp */ @Entity @Table(name = "OPEN_TABLE") @NamedQueries({@NamedQuery(name = "OpenTable.findById", query = "SELECT o FROM OpenTable o WHERE o.id = :id"), @NamedQuery(name = "OpenTable.findByTableId", query = "SELECT o FROM OpenTable o WHERE o.tableId = :tableId"), @NamedQuery(name = "OpenTable.findByWaiterId", query = "SELECT o FROM OpenTable o WHERE o.waiterId = :waiterId"), @NamedQuery(name = "OpenTable.findByOpenHour", query = "SELECT o FROM OpenTable o WHERE o.openHour = :openHour"), @NamedQuery(name = "OpenTable.findByOpenDate", query = "SELECT o FROM OpenTable o WHERE o.openDate = :openDate")}) public class OpenTable implements Serializable {     private static final long serialVersionUID = 1L;     @Id     @Column(name = "ID", nullable = false)     private Integer id;     @Column(name = "TABLE_ID")     private Integer tableId;     @Column(name = "WAITER_ID")     private Integer waiterId;     @Column(name = "OPEN_HOUR")     @Temporal(TemporalType.TIME)     private Date openHour;     @Column(name = "OPEN_DATE")     @Temporal(TemporalType.DATE)     private Date openDate;     public OpenTable() {     }     public OpenTable(Integer id) {         this.id = id;     }     public OpenTable(Integer id, Date openHour, Date openDate) {         this.id = id;         this.openHour = openHour;         this.openDate = openDate;     }     public Integer getId() {         return id;     }     public void setId(Integer id) {         this.id = id;     }     public Integer getTableId() {         return tableId;     }     public void setTableId(Integer tableId) {         this.tableId = tableId;     }     public Integer getWaiterId() {         return waiterId;     }     public void setWaiterId(Integer waiterId) {         this.waiterId = waiterId;     }     public Date getOpenHour() {         return openHour;     }     public void setOpenHour(Date openHour) {         this.openHour = openHour;     }     public Date getOpenDate() {         return openDate;     }     public void setOpenDate(Date openDate) {         this.openDate = openDate;     }     @Override     public int hashCode() {         int hash = 0;         hash += (id != null ? id.hashCode() : 0);         return hash;     }     @Override     public boolean equals(Object object) {         // TODO: Warning - this method won't work in the case the id fields are not set         if (!(object instanceof OpenTable)) {             return false;         }         OpenTable other = (OpenTable) object;         if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {             return false;         }         return true;     }     @Override     public String toString() {         return "OpenTable[id=" + id + "]";     } }
The problem is when I try to insert a new OpenTable to the database, Open_Date and Open_Hour columns stay as null. I want them to get the automatic CURRENT_DATE and CURRENT_TIME values. I can't see where the problem is because I used CURRENT_DATE and CURRENT_TIME words when I created the table. I don't have any problems when I use standart SQL statements to insert a new row. I just use INSERT INTO OPEN_TABLE(TABLE_ID, WAITER_ID) VALUES(2,3) and get current date and hour values automatically but JPA doesn't do that for me. What should I do to solve the problem?

Answer 1

Those database defaults are only applied when you use an INSERT statement that specifies a list of columns excluding the ones with defaults. Presumably your persistence code always sets all columns when it does an INSERT, so the defaults won't apply. You'll have to find the way to set the defaults in the persistence layer, not in the database.