114 lines
3.8 KiB
C#
114 lines
3.8 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;
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using System.IO;
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using System.Xml;
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using System.Data.Services.Client;
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internal sealed class EpmCustomContentWriterNodeData : IDisposable
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{
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private bool disposed;
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internal EpmCustomContentWriterNodeData(EpmTargetPathSegment segment, object element)
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{
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this.XmlContentStream = new MemoryStream();
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XmlWriterSettings customContentWriterSettings = new XmlWriterSettings();
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customContentWriterSettings.OmitXmlDeclaration = true;
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customContentWriterSettings.ConformanceLevel = ConformanceLevel.Fragment;
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this.XmlContentWriter = XmlWriter.Create(this.XmlContentStream, customContentWriterSettings);
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this.PopulateData(segment, element);
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}
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internal EpmCustomContentWriterNodeData(EpmCustomContentWriterNodeData parentData, EpmTargetPathSegment segment, object element)
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{
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this.XmlContentStream = parentData.XmlContentStream;
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this.XmlContentWriter = parentData.XmlContentWriter;
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this.PopulateData(segment, element);
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}
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internal MemoryStream XmlContentStream
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{
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get;
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private set;
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}
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internal XmlWriter XmlContentWriter
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{
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get;
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private set;
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}
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internal String Data
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{
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get;
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private set;
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}
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public void Dispose()
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{
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if (!this.disposed)
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{
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if (this.XmlContentWriter != null)
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{
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this.XmlContentWriter.Close();
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this.XmlContentWriter = null;
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}
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if (this.XmlContentStream != null)
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{
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this.XmlContentStream.Dispose();
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this.XmlContentStream = null;
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}
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this.disposed = true;
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}
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}
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internal void AddContentToTarget(XmlWriter target)
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{
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this.XmlContentWriter.Close();
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this.XmlContentWriter = null;
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this.XmlContentStream.Seek(0, SeekOrigin.Begin);
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XmlReaderSettings customContentReaderSettings = new XmlReaderSettings();
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customContentReaderSettings.ConformanceLevel = ConformanceLevel.Fragment;
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XmlReader reader = XmlReader.Create(this.XmlContentStream, customContentReaderSettings);
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this.XmlContentStream = null;
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target.WriteNode(reader, false);
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}
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private void PopulateData(EpmTargetPathSegment segment, object element)
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{
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if (segment.EpmInfo != null)
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{
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Object propertyValue;
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try
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{
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propertyValue = segment.EpmInfo.PropValReader.DynamicInvoke(element);
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}
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catch
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(System.Reflection.TargetInvocationException)
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{
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throw;
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}
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this.Data = propertyValue == null ? String.Empty : ClientConvert.ToString(propertyValue, false );
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}
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}
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}
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} |