Composite Key and update: update never executed

[Hans Lesmeister]

Hello,
I have an entity "Stock" with a composite key. Reading from the underlying table works perfectly. But if I try to update a property then no update-SQL is executed. Could somebody please take look if I do something wrong in my mapping file?

Mapping file:

  <composite-id name="stockId" class="Stock$Id" access="field">
    <key-property name="stockPartId"
                  column="STOCKPARTID"
                  access="field"/>
    <key-property name="locationId"
                  column="LOCATIONID"
                  access="field"/>
  </composite-id>
 
  <property name="reserved" type="int" not-null="false"
              unique="false" access="field"
              column="RESERVED" update="true"/>
 
  <many-to-one name="location" column="LOCATIONID"
               class="Location" access="field" not-null="true"
               cascade="save-update" update="false" insert="false"/>
 
  <many-to-one name="stockPart" column="STOCKPARTID"
               class="StockPart" access="field" not-null="true"
               cascade="save-update" update="false" insert="false"/>
 

Stock.java:

public Stock() { }
 
/** Constructor with Compound Keys as Arguments */
public Stock(StockPart stockPart, Location location) {
  // Assign Constructor args
  stockId.stockPartId = stockPart.getId();
  stockId.locationId = location.getId();
 
  setStockPart(stockPart);
  setLocation(location);
}
 
/** Getter for the compoundKey-Holder */
public Id getStockId() {
  return stockId;
}
 
/** Property "Reserved" */
private int reserved;
public double getReserved() { return this.reserved; }
public void setReserved(double reserved) {this.reserved = reserved;}
 
// ... (more setters and getters)
 
/** Local private holder Class to hold the compound Id's */
private static class Id implements java.io.Serializable {
  private Long stockPartId;
  private Long locationId;
 
  /** Default Constructor */
  public Id() { }
 
  /** Constructor with compound keys as arguments */
  public Id(Long stockPartId, Long locationId) {
    this.stockPartId = stockPartId;
    this.locationId = locationId;
  }
 
  /** Equals composed from all compound key-Id's */
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if ((o == null) || (getClass() != o.getClass())) {
      return false;
    }
 
    Id id = (Id) o;
    if (!this.stockPartId.equals(id.stockPartId)) {
      return false;
    }
    if (!this.locationId.equals(id.locationsId)) {
      return false;
    }
 
    return true;
  }
 
  /** Hashcode composed from all compound key-Id's */
  public int hashCode() {
    int result = 0;
    result = (31 * result) + stockPartId.hashCode();
    result = (31 * result) + locationId.hashCode();
    return result;
  }
}
 

As I said, selecting data is okay, but updating does not work. Somehow Hibernate does not notice a change in the Pojo and no update-SQL is generated:

// Pseudocode
beginTransaction
Stock stock = loadStockRecord(...)
stock.setReserved(250);
session.saveOrUpdate(stock);
commit;

Thanks for any help
Regards, Hans

[Edvins Reisons]

The first thing I would do: decide consistently in the mapping and the class definition whether the property is an int or a double.

[Hans Lesmeister]

Mea Culpa, the problem is solved. There was nothing wrong with the mapping and the Hibernate-Setup. There was something wrong with the Testcase. The Testcase did set new values in an existing record, but unfortunately those values where the same as the old values, so nothing really changed and therefore Hibernate did not execute an update. Quite stupid, please take my apolologize for any inconvenience

Regards
Hans
[ March 03, 2008: Message edited by: Hans Lesmeister ]