/// <summary>
/// Determines if a mapping exists in this <see cref="MapperContext"/>.
/// </summary>
/// <param name="destinationType"></param>
/// <param name="sourceType"></param>
/// <returns></returns>
public bool Contains(Type destinationType, Type sourceType)
{
var hash = Mapping.ComputeHash(destinationType, sourceType);
Lock.EnterReadLock();
try
{
return(MappingRows.ContainsKey(hash));
}
finally
{
Lock.ExitReadLock();
}
}
/// <summary>
/// Determines if a mapping exists in this <see cref="MapperContext"/>.
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
public bool Contains(Mapping item)
{
var hash = Mapping.ComputeHash(item);
Lock.EnterReadLock();
try
{
return(MappingRows.ContainsKey(hash));
}
finally
{
Lock.ExitReadLock();
}
}
/// <summary>
/// Merges another <see cref="MapperContext"/> with this instance of <see cref="MapperContext"/>.
/// </summary>
/// <remarks>
/// This will modify current object.
/// </remarks>
/// <param name="mapperContext"></param>
/// <param name="mergeBehavior"></param>
/// <exception cref="InvalidOperationException"></exception>
/// <exception cref="ArgumentOutOfRangeException"></exception>
public void MergeWith(MapperContext mapperContext,
MapperContextMergeBehavior mergeBehavior = MapperContextMergeBehavior.ThrowException)
{
switch (mergeBehavior)
{
case MapperContextMergeBehavior.OverwriteDuplicates:
{
Lock.EnterWriteLock();
try
{
foreach (var row in mapperContext.MappingRows)
{
MappingRows[row.Key] = row.Value;
}
}
finally
{
Lock.ExitWriteLock();
}
break;
}
case MapperContextMergeBehavior.SkipDuplicates:
{
Lock.EnterWriteLock();
try
{
foreach (var row in mapperContext.MappingRows)
{
if (!MappingRows.ContainsKey(row.Key))
{
MappingRows[row.Key] = row.Value;
}
}
}
finally
{
Lock.ExitWriteLock();
}
break;
}
case MapperContextMergeBehavior.ThrowException:
{
Lock.EnterReadLock();
try
{
foreach (var row in mapperContext.MappingRows)
{
if (MappingRows.ContainsKey(row.Key))
{
throw new InvalidOperationException();
}
}
}
finally
{
Lock.ExitReadLock();
}
break;
}
default:
throw new ArgumentOutOfRangeException(nameof(mergeBehavior), mergeBehavior, null);
}
}
