/**
* Method to remove a value from the Map.
*
* @param key The key for the value.
* @return The value removed.
*/
public synchronized Object remove(Object key) {
makeDirty();
if (useCache) {
// Make sure we have all values loaded (e.g if in optimistic tx and we put new entry)
loadFromStore();
}
Object removed = null;
Object delegateRemoved = delegate.remove(key);
if (backingStore != null) {
if (SCOUtils.useQueuedUpdate(ownerOP)) {
ownerOP
.getExecutionContext()
.addOperationToQueue(
new MapRemoveOperation(ownerOP, backingStore, key, delegateRemoved));
removed = delegateRemoved;
} else {
removed = backingStore.remove(ownerOP, key);
}
} else {
removed = delegateRemoved;
}
if (ownerOP != null && !ownerOP.getExecutionContext().getTransaction().isActive()) {
ownerOP.getExecutionContext().processNontransactionalUpdate();
}
return removed;
}
/**
* Method to add a Map of values to this map.
*
* @param m The Map to add
*/
public synchronized void putAll(java.util.Map m) {
makeDirty();
if (useCache) {
// Make sure we have all values loaded (e.g if in optimistic tx and we put new entry)
loadFromStore();
}
if (backingStore != null) {
if (SCOUtils.useQueuedUpdate(ownerOP)) {
Iterator iter = m.entrySet().iterator();
while (iter.hasNext()) {
java.util.Map.Entry entry = (java.util.Map.Entry) iter.next();
ownerOP
.getExecutionContext()
.addOperationToQueue(
new MapPutOperation(ownerOP, backingStore, entry.getKey(), entry.getValue()));
}
} else {
backingStore.putAll(ownerOP, m);
}
}
delegate.putAll(m);
if (ownerOP != null && !ownerOP.getExecutionContext().getTransaction().isActive()) {
ownerOP.getExecutionContext().processNontransactionalUpdate();
}
}
/**
* Accessor for the set of keys in the Map.
*
* @return Set of keys.
*/
public synchronized java.util.Set keySet() {
if (useCache) {
loadFromStore();
} else if (backingStore != null) {
return new Set(ownerOP, ownerMmd, false, backingStore.keySetStore());
}
return delegate.keySet();
}
/**
* Accessor for the value stored against a key.
*
* @param key The key
* @return The value.
*/
public synchronized Object get(Object key) {
if (useCache) {
loadFromStore();
} else if (backingStore != null) {
return backingStore.get(ownerOP, key);
}
return delegate.get(key);
}
/**
* Accessor for the set of values in the Map.
*
* @return Set of values.
*/
public synchronized Collection values() {
if (useCache) {
loadFromStore();
} else if (backingStore != null) {
return new org.datanucleus.store.types.wrappers.backed.Collection(
ownerOP, ownerMmd, true, backingStore.valueCollectionStore());
}
return delegate.values();
}
/**
* Method to return the size of the Map.
*
* @return The size
*/
public synchronized int size() {
if (useCache && isCacheLoaded) {
// If the "delegate" is already loaded, use it
return delegate.size();
} else if (backingStore != null) {
return backingStore.entrySetStore().size(ownerOP);
}
return delegate.size();
}
/**
* Utility to check if a value is contained in the Map.
*
* @param value The value to check
* @return Whether it is contained
*/
public synchronized boolean containsValue(Object value) {
if (useCache && isCacheLoaded) {
// If the "delegate" is already loaded, use it
return delegate.containsValue(value);
} else if (backingStore != null) {
return backingStore.containsValue(ownerOP, value);
}
return delegate.containsValue(value);
}
/** Method to clear the Map. */
public synchronized void clear() {
makeDirty();
delegate.clear();
if (backingStore != null) {
if (SCOUtils.useQueuedUpdate(ownerOP)) {
ownerOP
.getExecutionContext()
.addOperationToQueue(new MapClearOperation(ownerOP, backingStore));
} else {
backingStore.clear(ownerOP);
}
}
if (ownerOP != null && !ownerOP.getExecutionContext().getTransaction().isActive()) {
ownerOP.getExecutionContext().processNontransactionalUpdate();
}
}
/**
* Method to add a value to the Map.
*
* @param key The key for the value.
* @param value The value
* @return The previous value against this key (if any).
*/
public synchronized Object put(Object key, Object value) {
// Reject inappropriate values
if (!allowNulls) {
if (value == null) {
throw new NullPointerException(
"Nulls not allowed for map at field " + ownerMmd.getName() + " but value is null");
}
if (key == null) {
throw new NullPointerException(
"Nulls not allowed for map at field " + ownerMmd.getName() + " but key is null");
}
}
if (useCache) {
// Make sure we have all values loaded (e.g if in optimistic tx and we put new entry)
loadFromStore();
}
makeDirty();
Object oldValue = null;
if (backingStore != null) {
if (SCOUtils.useQueuedUpdate(ownerOP)) {
ownerOP
.getExecutionContext()
.addOperationToQueue(new MapPutOperation(ownerOP, backingStore, key, value));
} else {
oldValue = backingStore.put(ownerOP, key, value);
}
}
Object delegateOldValue = delegate.put(key, value);
if (backingStore == null) {
oldValue = delegateOldValue;
} else if (SCOUtils.useQueuedUpdate(ownerOP)) {
oldValue = delegateOldValue;
}
if (ownerOP != null && !ownerOP.getExecutionContext().getTransaction().isActive()) {
ownerOP.getExecutionContext().processNontransactionalUpdate();
}
return oldValue;
}
/**
* Method to update an embedded value in this map.
*
* @param value The value
* @param fieldNumber Number of field in the value
* @param newValue New value for this field
*/
public void updateEmbeddedValue(Object value, int fieldNumber, Object newValue) {
if (backingStore != null) {
backingStore.updateEmbeddedValue(ownerOP, value, fieldNumber, newValue);
}
}
/**
* Method to update an embedded key in this map.
*
* @param key The key
* @param fieldNumber Number of field in the key
* @param newValue New value for this field
*/
public void updateEmbeddedKey(Object key, int fieldNumber, Object newValue) {
if (backingStore != null) {
backingStore.updateEmbeddedKey(ownerOP, key, fieldNumber, newValue);
}
}
/**
* Method to initialise the SCO from an existing value.
*
* @param m The object to set from
* @param forInsert Whether the object needs inserting in the datastore with this value
* @param forUpdate Whether to update the datastore with this value
*/
public synchronized void initialise(java.util.Map m, boolean forInsert, boolean forUpdate) {
if (m != null) {
// Check for the case of serialised maps, and assign ObjectProviders to any PC keys/values
// without
if (SCOUtils.mapHasSerialisedKeysAndValues(ownerMmd)
&& (ownerMmd.getMap().keyIsPersistent() || ownerMmd.getMap().valueIsPersistent())) {
ExecutionContext ec = ownerOP.getExecutionContext();
Iterator iter = m.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
Object key = entry.getKey();
Object value = entry.getValue();
if (ownerMmd.getMap().keyIsPersistent()) {
ObjectProvider objSM = ec.findObjectProvider(key);
if (objSM == null) {
objSM =
ec.getNucleusContext()
.getObjectProviderFactory()
.newForEmbedded(ec, key, false, ownerOP, ownerMmd.getAbsoluteFieldNumber());
}
}
if (ownerMmd.getMap().valueIsPersistent()) {
ObjectProvider objSM = ec.findObjectProvider(value);
if (objSM == null) {
objSM =
ec.getNucleusContext()
.getObjectProviderFactory()
.newForEmbedded(ec, value, false, ownerOP, ownerMmd.getAbsoluteFieldNumber());
}
}
}
}
if (backingStore != null && useCache && !isCacheLoaded) {
// Mark as loaded
isCacheLoaded = true;
}
if (forInsert) {
if (NucleusLogger.PERSISTENCE.isDebugEnabled()) {
NucleusLogger.PERSISTENCE.debug(
Localiser.msg(
"023007", ownerOP.getObjectAsPrintable(), ownerMmd.getName(), "" + m.size()));
}
makeDirty();
if (useCache) {
// Make sure we have all values loaded (e.g if in optimistic tx and we put new entry)
loadFromStore();
}
if (backingStore != null) {
if (SCOUtils.useQueuedUpdate(ownerOP)) {
Iterator iter = m.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
ownerOP
.getExecutionContext()
.addOperationToQueue(
new MapPutOperation(ownerOP, backingStore, entry.getKey(), entry.getValue()));
}
} else {
backingStore.putAll(ownerOP, m);
}
}
delegate.putAll(m);
} else if (forUpdate) {
if (NucleusLogger.PERSISTENCE.isDebugEnabled()) {
NucleusLogger.PERSISTENCE.debug(
Localiser.msg(
"023008", ownerOP.getObjectAsPrintable(), ownerMmd.getName(), "" + m.size()));
}
// TODO This is clear+putAll. Improve it to work out what is changed
delegate.clear();
if (backingStore != null) {
if (SCOUtils.useQueuedUpdate(ownerOP)) {
// If not yet flushed to store then no need to add to queue (since will be handled via
// insert)
if (ownerOP.isFlushedToDatastore() || !ownerOP.getLifecycleState().isNew()) {
ownerOP
.getExecutionContext()
.addOperationToQueue(new MapClearOperation(ownerOP, backingStore));
}
} else {
backingStore.clear(ownerOP);
}
}
if (useCache) {
// Make sure we have all values loaded (e.g if in optimistic tx and we put new entry)
loadFromStore();
}
if (backingStore != null) {
if (SCOUtils.useQueuedUpdate(ownerOP)) {
// If not yet flushed to store then no need to add to queue (since will be handled via
// insert)
if (ownerOP.isFlushedToDatastore() || !ownerOP.getLifecycleState().isNew()) {
Iterator iter = m.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
ownerOP
.getExecutionContext()
.addOperationToQueue(
new MapPutOperation(
ownerOP, backingStore, entry.getKey(), entry.getValue()));
}
}
} else {
backingStore.putAll(ownerOP, m);
}
}
delegate.putAll(m);
makeDirty();
} else {
if (NucleusLogger.PERSISTENCE.isDebugEnabled()) {
NucleusLogger.PERSISTENCE.debug(
Localiser.msg(
"023007", ownerOP.getObjectAsPrintable(), ownerMmd.getName(), "" + m.size()));
}
delegate.clear();
delegate.putAll(m);
}
}
}
