if ((foreignkey == null) || (foreignkey.length() == 0))
{
throw new ConstraintException("The collection "+collDef.getName()+" has no foreignkeys");
}
ClassDescriptorDef ownerClass = (ClassDescriptorDef)collDef.getOwner();
ArrayList primFields = ownerClass.getPrimaryKeys();
ArrayList queue = new ArrayList();
ClassDescriptorDef elementClass;
ArrayList keyFields;
FieldDescriptorDef keyField;
FieldDescriptorDef primField;
String primType;
String keyType;
// we know that the class is present because the collection constraints have been checked already
queue.add(modelDef.getClass(collDef.getProperty(PropertyHelper.OJB_PROPERTY_ELEMENT_CLASS_REF)));
while (!queue.isEmpty())
{
elementClass = (ClassDescriptorDef)queue.get(0);
queue.remove(0);
for (Iterator it = elementClass.getExtentClasses(); it.hasNext();)
{
queue.add(it.next());
}
if (!elementClass.canBeInstantiated())
{
// we don't check abstract classes/interfaces
continue;
}
try
{
keyFields = elementClass.getFields(foreignkey);
}
catch (NoSuchFieldException ex)
{
throw new ConstraintException("The collection "+collDef.getName()+" specifies a foreignkey "+ex.getMessage()+" that is not a persistent field in the element class (or its subclass) "+elementClass.getName());
}
if (primFields.size() != keyFields.size())
{
throw new ConstraintException("The number of foreignkeys ("+keyFields.size()+") of the collection "+collDef.getName()+" doesn't match the number of primarykeys ("+primFields.size()+") of its owner class "+ownerClass.getName());
}
for (int idx = 0; idx < keyFields.size(); idx++)
{
keyField = (FieldDescriptorDef)keyFields.get(idx);
if (keyField.getBooleanProperty(PropertyHelper.OJB_PROPERTY_IGNORE, false))
{
throw new ConstraintException("The collection "+collDef.getName()+" in the class "+ownerClass.getName()+" uses the field "+keyField.getName()+" as foreignkey although this field is ignored in the element class (or its subclass) "+elementClass.getName());
}
}
// the jdbc types of the primary keys must match the jdbc types of the foreignkeys (in the correct order)
for (int idx = 0; idx < primFields.size(); idx++)
{
keyField = (FieldDescriptorDef)keyFields.get(idx);
if (keyField.getBooleanProperty(PropertyHelper.OJB_PROPERTY_IGNORE, false))
{
throw new ConstraintException("The collection "+collDef.getName()+" in the class "+ownerClass.getName()+" uses the field "+keyField.getName()+" as foreignkey although this field is ignored in the element class (or its subclass) "+elementClass.getName());
}
primField = (FieldDescriptorDef)primFields.get(idx);
primType = primField.getProperty(PropertyHelper.OJB_PROPERTY_JDBC_TYPE);
keyType = keyField.getProperty(PropertyHelper.OJB_PROPERTY_JDBC_TYPE);
if (!primType.equals(keyType))
{
throw new ConstraintException("The jdbc-type of foreignkey "+keyField.getName()+" in the element class (or its subclass) "+elementClass.getName()+" used by the collection "+collDef.getName()+" in class "+ownerClass.getName()+" doesn't match the jdbc-type of the corresponding primarykey "+primField.getName());
}
}
}
}