public NodeEqualityComparer(AssetDiff diffManager) { if (diffManager == null) { throw new ArgumentNullException("diffManager"); } this.diffManager = diffManager; }
/// <summary> /// Merges the specified assets from <c>base</c> and <c>from2</c> into <c>from1</c>. /// </summary> /// <param name="assetDiff">A precomputed asset difference.</param> /// <param name="mergePolicy">The merge policy.</param> /// <param name="previewOnly">if set to <c>true</c> then the merge will not change the object.</param> /// <returns>MergePreviewResult.</returns> /// <exception cref="System.ArgumentNullException">assetDiff /// or /// mergePolicy</exception> public static MergeResult Merge(AssetDiff assetDiff, MergePolicyDelegate mergePolicy, bool previewOnly = false) { if (assetDiff == null) { throw new ArgumentNullException("assetDiff"); } if (mergePolicy == null) { throw new ArgumentNullException("mergePolicy"); } var allDiffs = assetDiff.Compute(); var diff3 = allDiffs.FindDifferences().ToList(); var result = new MergeResult(assetDiff.Asset1); // Try to merge foreach (var diff3Node in diff3) { Diff3ChangeType changeType; try { changeType = mergePolicy(diff3Node); if (changeType >= Diff3ChangeType.Conflict) { result.Error("Unresolved conflict [{0}] on node [{1}/{2}/{3}]", diff3Node.ChangeType, diff3Node.BaseNode, diff3Node.Asset1Node, diff3Node.Asset2Node); continue; } // If we are in preview only mode, just skip the update if (previewOnly) { continue; } // As we are merging into asset1, the only relevant changes can only come from asset2 if (changeType != Diff3ChangeType.MergeFromAsset2) { continue; } var dataInstance = diff3Node.Asset2Node != null ? diff3Node.Asset2Node.Instance : null; // Sets the value on the node diff3Node.ReplaceValue(dataInstance, node => node.Asset1Node, diff3Node.Asset2Node == null); } catch (Exception ex) { result.Error("Unexpected error while merging [{0}] on node [{1}]", ex, diff3Node.ChangeType, diff3Node.InstanceType); break; } } return(result); }
public static Diff3Node Compute(Asset baseAsset, Asset asset1, Asset asset2) { var diff3 = new AssetDiff(baseAsset, asset1, asset2); return(diff3.Compute()); }
/// <summary> /// Merges the specified assets from <c>base</c> and <c>from2</c> into <c>from1</c>. /// </summary> /// <param name="assetDiff">A precomputed asset difference.</param> /// <param name="mergePolicy">The merge policy.</param> /// <param name="previewOnly">if set to <c>true</c> then the merge will not change the object.</param> /// <returns>MergePreviewResult.</returns> /// <exception cref="System.ArgumentNullException">assetDiff /// or /// mergePolicy</exception> public static MergeResult Merge(AssetDiff assetDiff, MergePolicyDelegate mergePolicy, bool previewOnly = false) { if (assetDiff == null) { throw new ArgumentNullException("assetDiff"); } if (mergePolicy == null) { throw new ArgumentNullException("mergePolicy"); } var allDiffs = assetDiff.Compute(); var diff3 = allDiffs.FindDifferences().ToList(); var result = new MergeResult(assetDiff.Asset1); // Try to merge foreach (var diff3Node in diff3) { Diff3ChangeType changeType; try { changeType = mergePolicy(diff3Node); if (changeType >= Diff3ChangeType.Conflict) { result.Error("Unresolved conflict [{0}] on node [{1}/{2}/{3}]", diff3Node.ChangeType, diff3Node.BaseNode, diff3Node.Asset1Node, diff3Node.Asset2Node); continue; } // If we are in preview only mode, just skip the update if (previewOnly) { continue; } object dataInstance = null; bool replaceValue = false; switch (changeType) { case Diff3ChangeType.MergeFromAsset2: // Because for collection, the merge is performed by the MergeContainer // Skip any merge for individual items, as they should have been merged by MergeContainer // TODO: This is a workaround as FindDifferences().ToList() is giving changes inside collection while we rebuild collection with MergeContainer if (diff3Node.Parent == null || diff3Node.Parent.Type != Diff3NodeType.Collection) { // As we are merging into asset1, the only relevant changes can only come from asset2 dataInstance = diff3Node.Asset2Node?.Instance; replaceValue = true; } break; case Diff3ChangeType.Children: MergeContainer(diff3Node, out dataInstance); replaceValue = dataInstance != null; break; default: continue; } // Sets the value on the node if (replaceValue) { diff3Node.ReplaceValue(dataInstance, node => node.Asset1Node); } // Applies the override for this node diff3Node.ApplyOverride(); } catch (Exception ex) { result.Error("Unexpected error while merging [{0}] on node [{1}]", ex, diff3Node.ChangeType, diff3Node.InstanceType); break; } } if (!previewOnly) { foreach (var node in allDiffs.Asset1Node.Children(node => true)) { if (node.Instance is IDiffProxy) { ((IDiffProxy)node.Instance).ApplyChanges(); } } } return(result); }