93 lines
3.4 KiB
C#
93 lines
3.4 KiB
C#
//Copyright 2010 Microsoft Corporation
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//
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//Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
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//You may obtain a copy of the License at
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//
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//http://www.apache.org/licenses/LICENSE-2.0
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//
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//Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an
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//"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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//See the License for the specific language governing permissions and limitations under the License.
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namespace System.Data.Services.Common
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{
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using System.Data.Services.Client;
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internal sealed class EpmSourceTree
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{
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#region Fields
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private readonly EpmSourcePathSegment root;
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private readonly EpmTargetTree epmTargetTree;
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#endregion
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internal EpmSourceTree(EpmTargetTree epmTargetTree)
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{
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this.root = new EpmSourcePathSegment("");
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this.epmTargetTree = epmTargetTree;
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}
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#region Properties
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internal EpmSourcePathSegment Root
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{
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get
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{
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return this.root;
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}
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}
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#endregion
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internal void Add(EntityPropertyMappingInfo epmInfo)
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{
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String sourceName = epmInfo.Attribute.SourcePath;
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EpmSourcePathSegment currentProperty = this.Root;
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IList<EpmSourcePathSegment> activeSubProperties = currentProperty.SubProperties;
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EpmSourcePathSegment foundProperty = null;
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Debug.Assert(!String.IsNullOrEmpty(sourceName), "Must have been validated during EntityPropertyMappingAttribute construction");
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foreach (String propertyName in sourceName.Split('/'))
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{
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if (propertyName.Length == 0)
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{
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throw new InvalidOperationException(Strings.EpmSourceTree_InvalidSourcePath(epmInfo.DefiningType.Name, sourceName));
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}
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foundProperty = activeSubProperties.SingleOrDefault(e => e.PropertyName == propertyName);
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if (foundProperty != null)
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{
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currentProperty = foundProperty;
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}
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else
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{
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currentProperty = new EpmSourcePathSegment(propertyName);
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activeSubProperties.Add(currentProperty);
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}
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activeSubProperties = currentProperty.SubProperties;
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}
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if (foundProperty != null)
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{
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Debug.Assert(Object.ReferenceEquals(foundProperty, currentProperty), "currentProperty variable should have been updated already to foundProperty");
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if (foundProperty.EpmInfo.DefiningType.Name == epmInfo.DefiningType.Name)
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{
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throw new InvalidOperationException(Strings.EpmSourceTree_DuplicateEpmAttrsWithSameSourceName(epmInfo.Attribute.SourcePath, epmInfo.DefiningType.Name));
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}
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this.epmTargetTree.Remove(foundProperty.EpmInfo);
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}
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currentProperty.EpmInfo = epmInfo;
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this.epmTargetTree.Add(epmInfo);
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}
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}
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} |