No one can help me???
Pleaseee!!
Patrizio Munzi wrote:
Hi all,
perhaps I missed something or I'm only tired but I cannot make this
simple update work.
I just replace a child object with a new one but the update is simply
not persisted.
Hope you're more awake than me.
Thanks
Here's the snippet and my classes:
-----------------
SNIPPET ------------------------------
public void test() {
String parentId = "parent";
String childId_1 = "child-1";
String childId_2 = "child-2";
PersistenceManager pm = PMF.get().getPersistenceManager();
Parent parent = new Parent();
parent.setId(parentId);
Child child = new Child();
child.setId(childId_1);
child.setValue(100);
parent.setChild(child);
pm.makePersistent(parent);
pm.close();
pm = PMF.get().getPersistenceManager();
String parentEncodedKey =
KeyFactory.createKeyString(Parent.class.getSimpleName(), parentId);
parent = pm.getObjectById(Parent.class, parentEncodedKey);
assertEquals(100, parent.getChild().getValue());
child = new Child();
child.setId(childId_2);
child.setValue(1000);
parent.setChild(child);
pm.makePersistent(parent);
pm.close();
pm = PMF.get().getPersistenceManager();
parentEncodedKey =
KeyFactory.createKeyString(Parent.class.getSimpleName(), parentId);
parent = pm.getObjectById(Parent.class, parentEncodedKey);
assertEquals(1000, parent.getChild().getValue());
pm.close();
}
-----------------------------------------------
---------------- PARENT -------------------------------
@PersistenceCapable(identityType = IdentityType.APPLICATION)
public class Parent implements Serializable {
private static final long serialVersionUID = -3051163582728562957L;
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
@Extension(vendorName="datanucleus", key="gae.encoded-pk",
value="true")
protected String encodedKey;
@Persistent
@Extension(vendorName="datanucleus", key="gae.pk-name",
value="true")
private String id;
@Persistent(defaultFetchGroup="true")
@Element(dependent="true")
private Child child;
public String getEncodedKey() {
return encodedKey;
}
public void setEncodedKey(String encodedKey) {
this.encodedKey = encodedKey;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public Child getChild() {
return child;
}
public void setChild(Child child) {
this.child = child;
}
}
-----------------------------------------------
------------------- CHILD ----------------------------
@PersistenceCapable(identityType = IdentityType.APPLICATION)
public class Child implements Serializable {
private static final long serialVersionUID = -3051163582728562957L;
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
@Extension(vendorName="datanucleus", key="gae.encoded-pk",
value="true")
protected String encodedKey;
@Persistent
@Extension(vendorName="datanucleus", key="gae.pk-name",
value="true")
private String id;
@Persistent
private long value;
public String getEncodedKey() {
return encodedKey;
}
public void setEncodedKey(String encodedKey) {
this.encodedKey = encodedKey;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public long getValue() {
return value;
}
public void setValue(long value) {
this.value = value;
}
}
-----------------------------------------------
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