|
protected Unmerge ( |
||
| sourceElement | ||
| parentElement | ||
| saveMode | ConfigurationSaveMode | |
| Результат | void | |
protected internal virtual void Unmerge(ConfigurationElement sourceElement,
ConfigurationElement parentElement,
ConfigurationSaveMode saveMode) {
if (sourceElement != null) {
bool hasAnyChildElements = false;
_lockedAllExceptAttributesList = sourceElement._lockedAllExceptAttributesList;
_lockedAllExceptElementsList = sourceElement._lockedAllExceptElementsList;
_fItemLocked = sourceElement._fItemLocked;
_lockedAttributesList = sourceElement._lockedAttributesList;
_lockedElementsList = sourceElement._lockedElementsList;
AssociateContext(sourceElement._configRecord);
if (parentElement != null) {
if (parentElement._lockedAttributesList != null)
_lockedAttributesList = UnMergeLockList(sourceElement._lockedAttributesList,
parentElement._lockedAttributesList, saveMode);
if (parentElement._lockedElementsList != null)
_lockedElementsList = UnMergeLockList(sourceElement._lockedElementsList,
parentElement._lockedElementsList, saveMode);
if (parentElement._lockedAllExceptAttributesList != null)
_lockedAllExceptAttributesList = UnMergeLockList(sourceElement._lockedAllExceptAttributesList,
parentElement._lockedAllExceptAttributesList, saveMode);
if (parentElement._lockedAllExceptElementsList != null)
_lockedAllExceptElementsList = UnMergeLockList(sourceElement._lockedAllExceptElementsList,
parentElement._lockedAllExceptElementsList, saveMode);
}
ConfigurationPropertyCollection props = Properties;
ConfigurationPropertyCollection collectionKeys = null;
// check for props not in bag from source
for (int index = 0; index < sourceElement.Values.Count; index++) {
string key = sourceElement.Values.GetKey(index);
object value = sourceElement.Values[index];
ConfigurationProperty prop = (ConfigurationProperty)sourceElement.Properties[key];
if (prop == null || (collectionKeys != null && !collectionKeys.Contains(prop.Name)))
continue;
if (typeof(ConfigurationElement).IsAssignableFrom(prop.Type)) {
hasAnyChildElements = true;
}
else {
if (value != s_nullPropertyValue) {
if (!props.Contains(key)) // this is for optional provider models keys
{
// _values[key] = value;
ConfigurationValueFlags valueFlags = sourceElement.Values.RetrieveFlags(key);
_values.SetValue(key, value, valueFlags, null);
props.Add(prop);
}
}
}
}
foreach (ConfigurationProperty prop in Properties) {
if (prop == null || (collectionKeys != null && !collectionKeys.Contains(prop.Name))) {
continue;
}
if (typeof(ConfigurationElement).IsAssignableFrom(prop.Type)) {
hasAnyChildElements = true;
}
else {
object value = sourceElement.Values[prop.Name];
// if the property is required or we are writing a full config make sure we have defaults
if ((prop.IsRequired == true || saveMode == ConfigurationSaveMode.Full) && (value == null || value == s_nullPropertyValue)) {
// If the default value is null, this means there wasnt a reasonable default for the value
// and there is nothing more we can do. Otherwise reset the value to the default
// Note: 'null' should be used as default for non-empty strings instead
// of the current practice to use String.Epmty
if (prop.DefaultValue != null) {
value = prop.DefaultValue; // need to make sure required properties are persisted
}
}
if (value != null && value != s_nullPropertyValue) {
object value2 = null;
if (parentElement != null) // Is there a parent
value2 = parentElement.Values[prop.Name]; // if so get it's value
if (value2 == null) // no parent use default
value2 = prop.DefaultValue;
// If changed and not same as parent write or required
switch (saveMode) {
case ConfigurationSaveMode.Minimal: {
if (!Object.Equals(value, value2) || prop.IsRequired == true)
_values[prop.Name] = value;
}
break;
// (value != null && value != s_nullPropertyValue) ||
case ConfigurationSaveMode.Modified: {
bool modified = sourceElement.Values.IsModified(prop.Name);
bool inherited = sourceElement.Values.IsInherited(prop.Name);
// update the value if the property is required, modified or it was not inherited
// Also update properties that ARE inherited when we are resetting the object
// as long as the property is not the same as the default value for the property
if ((prop.IsRequired || modified || !inherited) ||
(parentElement == null && inherited && !Object.Equals(value, value2))) {
_values[prop.Name] = value;
}
}
break;
case ConfigurationSaveMode.Full: {
if (value != null && value != s_nullPropertyValue)
_values[prop.Name] = value;
else
_values[prop.Name] = value2;
}
break;
}
}
}
}
if (hasAnyChildElements) {
foreach (ConfigurationProperty prop in Properties) {
if (typeof(ConfigurationElement).IsAssignableFrom(prop.Type)) {
ConfigurationElement pElem = (ConfigurationElement)((parentElement != null) ? parentElement[prop] : null);
ConfigurationElement childElement = (ConfigurationElement)this[prop];
if ((ConfigurationElement)sourceElement[prop] != null)
childElement.Unmerge((ConfigurationElement)sourceElement[prop],
pElem, saveMode);
}
}
}
}
}
protected internal override void Unmerge(ConfigurationElement sourceElement, ConfigurationElement parentElement, ConfigurationSaveMode updateMode)
{
ConfigurationElementCollection source = (ConfigurationElementCollection)sourceElement;
ConfigurationElementCollection parent = (ConfigurationElementCollection)parentElement;
for (int n = 0; n < source.Count; n++)
{
ConfigurationElement sitem = source.BaseGet(n);
object key = source.GetElementKey(sitem);
ConfigurationElement pitem = parent != null?parent.BaseGet(key) as ConfigurationElement : null;
ConfigurationElement nitem = CreateNewElementInternal(null);
if (pitem != null && updateMode != ConfigurationSaveMode.Full)
{
nitem.Unmerge(sitem, pitem, updateMode);
if (nitem.HasValues(pitem, updateMode))
{
BaseAdd(nitem);
}
}
else
{
nitem.Unmerge(sitem, null, ConfigurationSaveMode.Full);
BaseAdd(nitem);
}
}
if (updateMode == ConfigurationSaveMode.Full)
{
EmitClear = true;
}
else if (parent != null)
{
for (int n = 0; n < parent.Count; n++)
{
ConfigurationElement pitem = parent.BaseGet(n);
object key = parent.GetElementKey(pitem);
if (source.IndexOfKey(key) == -1)
{
if (removed == null)
{
removed = new ArrayList();
}
removed.Add(pitem);
}
}
}
}
