/// <summary>
/// Creates an enumeration of the <see cref="IEnumModifiedClassInfo" /> object.
/// </summary>
/// <param name="source">The source.</param>
/// <returns>Returns a <see cref="IEnumerable{IModifiedClassInfo}" /> representing the items.</returns>
public static IEnumerable <IModifiedClassInfo> AsEnumerable(this IEnumModifiedClassInfo source)
{
if (source != null)
{
source.Reset();
IModifiedClassInfo mci;
while ((mci = source.Next()) != null)
{
yield return(mci);
}
}
}
/// <summary>
/// Gets the differences between the <paramref name="source" /> and <paramref name="target" /> versions.
/// </summary>
/// <param name="source">The source (or child) version.</param>
/// <param name="target">The target (or parent) version.</param>
/// <param name="filter">The predicate to filter the results.</param>
/// <param name="predicate">
/// The predicate that defines a set of criteria and determines whether the specified differences
/// will be loaded.
/// </param>
/// <param name="differenceTypes">The type of differences that will be determined.</param>
/// <returns>
/// Returns a <see cref="Dictionary{String, DifferenceRow}" /> representing the differences for the
/// table (or key).
/// </returns>
/// <exception cref="System.ArgumentNullException">
/// target
/// or
/// differenceTypes
/// </exception>
public static Dictionary <string, IEnumerable <DifferenceRow> > GetDifferences(this IVersion source, IVersion target, IQueryFilter filter, Func <string, ITable, bool> predicate, params esriDifferenceType[] differenceTypes)
{
if (source == null)
{
return(null);
}
if (target == null)
{
throw new ArgumentNullException("target");
}
if (differenceTypes == null)
{
throw new ArgumentNullException("differenceTypes");
}
var list = new Dictionary <string, IEnumerable <DifferenceRow> >();
IVersionDataChangesInit vdci = new VersionDataChangesClass();
IWorkspaceName wsNameSource = (IWorkspaceName)((IDataset)source).FullName;
IWorkspaceName wsNameTarget = (IWorkspaceName)((IDataset)target).FullName;
vdci.Init(wsNameSource, wsNameTarget);
IDataChanges dataChanges = (IDataChanges)vdci;
IEnumModifiedClassInfo enumMci = dataChanges.GetModifiedClassesInfo();
enumMci.Reset();
IModifiedClassInfo mci;
while ((mci = enumMci.Next()) != null)
{
// The table references are not disposed due to the enumerable return which would result in an RCW exception.
string tableName = mci.ChildClassName;
ITable sourceTable = ((IFeatureWorkspace)source).OpenTable(tableName);
if (predicate(tableName, sourceTable))
{
IVersionedTable versionedTable = sourceTable as IVersionedTable;
ITable table = ((IFeatureWorkspace)target).OpenTable(tableName);
if (versionedTable != null && table != null)
{
var rows = versionedTable.GetDifferences(table, filter, differenceTypes);
list.Add(tableName, rows);
}
}
}
return(list);
}