/// <summary>
/// Merges the current value set with that of the supplied object.
/// </summary>
/// <remarks>The supplied object is considered the parent, and values in the
/// callee's value set must override those of the supplied object.
/// </remarks>
/// <param name="parent">The parent object to merge with</param>
/// <returns>The result of the merge operation</returns>
/// <exception cref="ArgumentNullException">If the supplied parent is <code>null</code></exception>
/// <exception cref="InvalidOperationException">If merging is not enabled for this instance,
/// (i.e. <code>MergeEnabled</code> equals <code>false</code>.</exception>
public object Merge(object parent)
{
if (!this.mergeEnabled)
{
throw new InvalidOperationException(
"Not allowed to merge when the 'MergeEnabled' property is set to 'false'");
}
if (parent == null)
{
return(this);
}
NameValueCollection pDict = parent as NameValueCollection;
if (pDict == null)
{
throw new InvalidOperationException("Cannot merge with object of type [" + parent.GetType() + "]");
}
NameValueCollection merged = new ManagedNameValueCollection();
foreach (string s in pDict.AllKeys)
{
merged[s] = pDict.Get(s);
}
foreach (string s in this.AllKeys)
{
merged[s] = this.Get(s);
}
return(merged);
}
public void MergeEmptyChild()
{
ManagedNameValueCollection parent = new ManagedNameValueCollection();
parent.Add("one", "one");
parent.Add("two", "two");
ManagedNameValueCollection child = new ManagedNameValueCollection();
child.MergeEnabled = true;
NameValueCollection mergedMap = (NameValueCollection)child.Merge(parent);
Assert.AreEqual(2, mergedMap.Count);
}
public void MergeSunnyDay()
{
ManagedNameValueCollection parent = new ManagedNameValueCollection();
parent.Add("one", "one");
parent.Add("two", "two");
ManagedNameValueCollection child = new ManagedNameValueCollection();
child.Add("three", "three");
child.MergeEnabled = true;
NameValueCollection mergedList = (NameValueCollection)child.Merge(parent);
Assert.AreEqual(3, mergedList.Count);
}
public object GetObject(IObjectDefinitionService objectDefinitionService)
{
ManagedNameValueCollection nameValueCollection = new ManagedNameValueCollection();
foreach (var nameValueCollectionAction in _nameValueCollectionActions)
{
nameValueCollectionAction(nameValueCollection, objectDefinitionService);
}
return nameValueCollection;
}
public void MergeChildValueOverrideTheParents()
{
ManagedNameValueCollection parent = new ManagedNameValueCollection();
parent.Add("one", "one");
parent.Add("two", "two");
ManagedNameValueCollection child = new ManagedNameValueCollection();
child.Add("one", "fork");
child.MergeEnabled = true;
NameValueCollection mergedMap = (NameValueCollection)child.Merge(parent);
Assert.AreEqual(2, mergedMap.Count);
Assert.AreEqual("fork", mergedMap["one"]);
}
/// <summary>
/// Gets a name value collection mapping definition.
/// </summary>
/// <param name="nameValueEle">
/// The element describing the name value collection mapping definition.
/// </param>
/// <param name="name">
/// The name of the object (definition) associated with the
/// name value collection mapping definition.
/// </param>
/// <param name="parserContext">the context carrying parsing state information</param>
/// <returns>The name value collection definition.</returns>
protected NameValueCollection ParseNameValueCollectionElement(XmlElement nameValueEle, string name, ParserContext parserContext)
{
ManagedNameValueCollection nvc = new ManagedNameValueCollection();
nvc.MergeEnabled = ParseMergeAttribute(nameValueEle, parserContext.ParserHelper);
XmlNodeList addElements = nameValueEle.GetElementsByTagName(ObjectDefinitionConstants.AddElement);
foreach (XmlElement addElement in addElements)
{
string key = GetAttributeValue(addElement, ObjectDefinitionConstants.KeyAttribute);
string value = GetAttributeValue(addElement, ObjectDefinitionConstants.ValueAttribute);
string delimiters = GetAttributeValue(addElement, ObjectDefinitionConstants.DelimitersAttribute);
if (StringUtils.HasText(delimiters))
{
string[] values = value.Split(delimiters.ToCharArray());
foreach (string v in values)
{
nvc.Add(key, v);
}
}
else
{
nvc.Add(key, value);
}
}
return nvc;
}
public void MergeWithNonCompatibleParentType()
{
ManagedNameValueCollection child = new ManagedNameValueCollection();
child.MergeEnabled = true;
Assert.Throws<InvalidOperationException>(() => child.Merge("hello"));
}
public void MergeNotAllowedWhenMergeNotEnabled()
{
ManagedNameValueCollection child = new ManagedNameValueCollection();
Assert.Throws<InvalidOperationException>(() => child.Merge(null), "Not allowed to merge when the 'MergeEnabled' property is set to 'false'");
}
public void MergeWithNullParent()
{
ManagedNameValueCollection child = new ManagedNameValueCollection();
child.MergeEnabled = true;
Assert.AreSame(child, child.Merge(null));
}
public void MergeWithNonCompatibleParentType()
{
ManagedNameValueCollection child = new ManagedNameValueCollection();
child.MergeEnabled = true;
child.Merge("hello");
}
public void MergeNotAllowedWhenMergeNotEnabled()
{
ManagedNameValueCollection child = new ManagedNameValueCollection();
child.Merge(null);
}
/// <summary>
/// Merges the current value set with that of the supplied object.
/// </summary>
/// <remarks>The supplied object is considered the parent, and values in the
/// callee's value set must override those of the supplied object.
/// </remarks>
/// <param name="parent">The parent object to merge with</param>
/// <returns>The result of the merge operation</returns>
/// <exception cref="ArgumentNullException">If the supplied parent is <code>null</code></exception>
/// <exception cref="InvalidOperationException">If merging is not enabled for this instance,
/// (i.e. <code>MergeEnabled</code> equals <code>false</code>.</exception>
public object Merge(object parent)
{
if (!this.mergeEnabled)
{
throw new InvalidOperationException(
"Not allowed to merge when the 'MergeEnabled' property is set to 'false'");
}
if (parent == null)
{
return this;
}
NameValueCollection pDict = parent as NameValueCollection;
if (pDict == null)
{
throw new InvalidOperationException("Cannot merge with object of type [" + parent.GetType() + "]");
}
NameValueCollection merged = new ManagedNameValueCollection();
foreach (string s in pDict.AllKeys)
{
merged[s] = pDict.Get(s);
}
foreach (string s in this.AllKeys)
{
merged[s] = this.Get(s);
}
return merged;
}
