public Object theCurrentValue() {
// handle the case where it's the - none - string
if (theCurrentItem == _noneString) {
return theCurrentItem;
}
return NSKeyValueCoding.Utility.valueForKey(theCurrentItem, _localDestinationDisplayKey());
}
public Object selection() {
if (_privateSelection() == null) {
set_privateSelection(
NSKeyValueCoding.Utility.valueForKey(_localSourceObject(), _localRelationshipKey()));
}
// deal with isMandatory
if ((_privateSelection() == null) && !_localIsMandatory()) {
setSelection(_noneString);
}
return _privateSelection();
}
// This prevents the dreaded KeyValueCoding null object exception, for say key paths:
// object.entityName
// Should just return null instead of throwing.
public static Object contextValueForKeyNoInferenceNoException(D2WContext c, String keyPath) {
Object result = null;
int i = keyPath.indexOf(".");
if (i == -1) {
result = c.valueForKeyNoInference(keyPath);
} else {
String first = keyPath.substring(0, i);
String second = keyPath.substring(i + 1);
result = c.valueForKeyNoInference(first);
if (result != null) {
// Optimized for two paths deep
try {
if (second.indexOf(".") == -1) {
result = NSKeyValueCoding.Utility.valueForKey(result, second);
} else {
NSArray parts = NSArray.componentsSeparatedByString(second, ".");
for (int j = 0; j < parts.count(); j++) {
String part = (String) parts.objectAtIndex(j);
result = NSKeyValueCoding.Utility.valueForKey(result, part);
if (result == null) break;
}
}
} catch (NSKeyValueCoding.UnknownKeyException e) {
if (log.isDebugEnabled()) {
log.debug(
"keyPath {} is not available for context with entity: {}; task: {}",
keyPath,
c.entity().name(),
c.task());
}
return null;
}
}
}
return result;
}
public static Object decodeWithKeyValueUnarchiver(EOKeyValueUnarchiver eokeyvalueunarchiver) {
ERD2WExtendedRule rule = null;
try {
rule = new ERD2WExtendedRule(eokeyvalueunarchiver);
} catch (Throwable t) {
NSMutableDictionary dict =
(NSMutableDictionary)
NSKeyValueCoding.Utility.valueForKey(eokeyvalueunarchiver, "propertyList");
log.info("Problems with this rule: " + dict + "," + t.getMessage());
dict.takeValueForKeyPath(dict.valueForKeyPath("rhs.class"), "assignmentClassName");
dict.takeValueForKeyPath("com.webobjects.directtoweb.Assignment", "rhs.class");
rule = new ERD2WExtendedRule(eokeyvalueunarchiver);
}
return rule;
}
public void updateSourceObject(NSArray newValues) {
Object realSourceObject = realSourceObject();
String realRelationshipKey = realRelationshipKey();
newValues = newValues != null ? newValues : NSArray.EmptyArray;
if (realSourceObject instanceof EOEnterpriseObject
&& // only add/remove if we have an EO and handle a relationship
((EOEnterpriseObject) realSourceObject)
.classDescriptionForDestinationKey(realRelationshipKey)
!= null) {
EOEnterpriseObject eo = (EOEnterpriseObject) realSourceObject;
NSArray currentValues = (NSArray) eo.valueForKey(realRelationshipKey);
currentValues = currentValues != null ? currentValues : NSArray.EmptyArray;
for (int i = currentValues.count() - 1; i >= 0; i--) {
EOEnterpriseObject o = (EOEnterpriseObject) currentValues.objectAtIndex(i);
if (newValues.indexOfIdenticalObject(o) == NSArray.NotFound) { // not found
eo.removeObjectFromBothSidesOfRelationshipWithKey(o, realRelationshipKey);
}
}
for (int i = newValues.count() - 1; i >= 0; i--) {
EOEnterpriseObject o = (EOEnterpriseObject) newValues.objectAtIndex(i);
if (currentValues.indexOfIdenticalObject(o) == NSArray.NotFound) { // not found
eo.addObjectToBothSidesOfRelationshipWithKey(o, realRelationshipKey);
}
}
} else {
// NOTE ak: this implementation is different from what JavaWOExtensions do.
// There, the existing array is fetched and added to/removed from. Here, we simply set the
// new array. I changed this because it looked like a bad idea to change the array without
// the sourceObjects's knowledge.
NSKeyValueCoding.Utility.takeValueForKey(
realSourceObject,
(newValues instanceof NSMutableArray) ? newValues : newValues.mutableClone(),
realRelationshipKey);
}
}
