Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Base / System / IO / Packaging / PackageRelationship.cs / 1 / PackageRelationship.cs
//------------------------------------------------------------------------------ // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: // This is a class for representing a PackageRelationship. This is a part of the // MMCF Packaging Layer. // // History: // 01/03/2004: SarjanaS: Initial creation. // 03/17/2004: BruceMac: Initial implementation or PackageRelationship methods // //----------------------------------------------------------------------------- using System; using System.Collections; using System.Xml; using System.Windows; // For Exception strings - SRID using System.Text; // for StringBuilder using System.Diagnostics; // for Debug.Assert using MS.Internal; // for Invariant.Assert namespace System.IO.Packaging { ////// This class is used to express a relationship between a source and a target part. /// The only way to create a PackageRelationship, is to call the PackagePart.CreateRelationship() /// or Package.CreateRelationship(). A relationship is owned by a part or by the package itself. /// If the source part is deleted all the relationships it owns are also deleted. /// A target of the relationship need not be present. public class PackageRelationship { //----------------------------------------------------- // // Public Constructors // //----------------------------------------------------- // None //------------------------------------------------------ // // Public Properties // //----------------------------------------------------- #region Public Properties ////// This is a reference to the parent PackagePart to which this relationship belongs. /// ///Uri public Uri SourceUri { get { if (_source == null) return PackUriHelper.PackageRootUri; else return _source.Uri; } } ////// Uri of the TargetPart, that this relationship points to. /// ///public Uri TargetUri { get { return _targetUri; } } /// /// Type of the relationship - used to uniquely define the role of the relationship /// ///public string RelationshipType { get { return _relationshipType; } } /// /// Enumeration value indicating the interpretations of the "base" of the target uri. /// ///public TargetMode TargetMode { get { return _targetMode; } } /// /// PackageRelationship's identifier. Unique across relationships for the given source. /// ///String public String Id { get { return _id; } } ////// PackageRelationship's owning Package object. /// ///Package public Package Package { get { return _package; } } #endregion Public Properties //------------------------------------------------------ // // Public Methods // //------------------------------------------------------ // None //----------------------------------------------------- // // Public Events // //------------------------------------------------------ // None //----------------------------------------------------- // // Internal Constructors // //----------------------------------------------------- #region Internal Constructor ////// PackageRelationship constructor /// /// Owning Package object for this relationship /// owning part - will be null if the owner is the container /// target of relationship /// enum specifying the interpretation of the base uri for the target uri /// type name /// unique identifier internal PackageRelationship(Package package, PackagePart sourcePart, Uri targetUri, TargetMode targetMode, string relationshipType, string id) { //sourcePart can be null to represent that the relationships are at the package level if (package == null) throw new ArgumentNullException("package"); if (targetUri == null) throw new ArgumentNullException("targetUri"); if (relationshipType == null) throw new ArgumentNullException("relationshipType"); if (id == null) throw new ArgumentNullException("id"); // The ID is guaranteed to be an XML ID by the caller (InternalRelationshipCollection). // The following check is a precaution against future bug introductions. #if DEBUG try { // An XSD ID is an NCName that is unique. We can't check uniqueness at this level. XmlConvert.VerifyNCName(id); } catch(XmlException exception) { throw new XmlException(SR.Get(SRID.NotAValidXmlIdString, id), exception); } #endif // Additional check - don't accept absolute Uri's if targetMode is Internal. Debug.Assert((targetMode == TargetMode.External || !targetUri.IsAbsoluteUri), "PackageRelationship target must be relative if the TargetMode is Internal"); // Additional check - Verify if the Enum value is valid Debug.Assert ((targetMode >= TargetMode.Internal || targetMode <= TargetMode.External), "TargetMode enum value is out of Range"); // Look for empty string or string with just spaces Debug.Assert(relationshipType.Trim() != String.Empty, "RelationshipType cannot be empty string or a string with just spaces"); _package = package; _source = sourcePart; _targetUri = targetUri; _relationshipType = relationshipType; _targetMode = targetMode; _id = id; } #endregion Internal Constructor //----------------------------------------------------- // // Internal Properties // //------------------------------------------------------ #region Internal Properties internal static Uri ContainerRelationshipPartName { get { return _containerRelationshipPartName; } } // Property used in streaming production to be able to keep the set // of all properties that have been created in memory while knowing // which remain to be written to XML. internal bool Saved { get { return _saved; } set { _saved = value; } } #endregion Internal Properties //----------------------------------------------------- // // Internal Methods // //------------------------------------------------------ // None //------------------------------------------------------ // // Internal Events // //----------------------------------------------------- // None //------------------------------------------------------ // // Private Methods // //----------------------------------------------------- // None //----------------------------------------------------- // // Private Fields // //----------------------------------------------------- #region Private Members private Package _package; private PackagePart _source; private Uri _targetUri; private string _relationshipType; private TargetMode _targetMode; private String _id; private bool _saved = false; private static readonly Uri _containerRelationshipPartName = PackUriHelper.CreatePartUri(new Uri("/_rels/.rels", UriKind.Relative)); #endregion Private Members } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //------------------------------------------------------------------------------ // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: // This is a class for representing a PackageRelationship. This is a part of the // MMCF Packaging Layer. // // History: // 01/03/2004: SarjanaS: Initial creation. // 03/17/2004: BruceMac: Initial implementation or PackageRelationship methods // //----------------------------------------------------------------------------- using System; using System.Collections; using System.Xml; using System.Windows; // For Exception strings - SRID using System.Text; // for StringBuilder using System.Diagnostics; // for Debug.Assert using MS.Internal; // for Invariant.Assert namespace System.IO.Packaging { ////// This class is used to express a relationship between a source and a target part. /// The only way to create a PackageRelationship, is to call the PackagePart.CreateRelationship() /// or Package.CreateRelationship(). A relationship is owned by a part or by the package itself. /// If the source part is deleted all the relationships it owns are also deleted. /// A target of the relationship need not be present. public class PackageRelationship { //----------------------------------------------------- // // Public Constructors // //----------------------------------------------------- // None //------------------------------------------------------ // // Public Properties // //----------------------------------------------------- #region Public Properties ////// This is a reference to the parent PackagePart to which this relationship belongs. /// ///Uri public Uri SourceUri { get { if (_source == null) return PackUriHelper.PackageRootUri; else return _source.Uri; } } ////// Uri of the TargetPart, that this relationship points to. /// ///public Uri TargetUri { get { return _targetUri; } } /// /// Type of the relationship - used to uniquely define the role of the relationship /// ///public string RelationshipType { get { return _relationshipType; } } /// /// Enumeration value indicating the interpretations of the "base" of the target uri. /// ///public TargetMode TargetMode { get { return _targetMode; } } /// /// PackageRelationship's identifier. Unique across relationships for the given source. /// ///String public String Id { get { return _id; } } ////// PackageRelationship's owning Package object. /// ///Package public Package Package { get { return _package; } } #endregion Public Properties //------------------------------------------------------ // // Public Methods // //------------------------------------------------------ // None //----------------------------------------------------- // // Public Events // //------------------------------------------------------ // None //----------------------------------------------------- // // Internal Constructors // //----------------------------------------------------- #region Internal Constructor ////// PackageRelationship constructor /// /// Owning Package object for this relationship /// owning part - will be null if the owner is the container /// target of relationship /// enum specifying the interpretation of the base uri for the target uri /// type name /// unique identifier internal PackageRelationship(Package package, PackagePart sourcePart, Uri targetUri, TargetMode targetMode, string relationshipType, string id) { //sourcePart can be null to represent that the relationships are at the package level if (package == null) throw new ArgumentNullException("package"); if (targetUri == null) throw new ArgumentNullException("targetUri"); if (relationshipType == null) throw new ArgumentNullException("relationshipType"); if (id == null) throw new ArgumentNullException("id"); // The ID is guaranteed to be an XML ID by the caller (InternalRelationshipCollection). // The following check is a precaution against future bug introductions. #if DEBUG try { // An XSD ID is an NCName that is unique. We can't check uniqueness at this level. XmlConvert.VerifyNCName(id); } catch(XmlException exception) { throw new XmlException(SR.Get(SRID.NotAValidXmlIdString, id), exception); } #endif // Additional check - don't accept absolute Uri's if targetMode is Internal. Debug.Assert((targetMode == TargetMode.External || !targetUri.IsAbsoluteUri), "PackageRelationship target must be relative if the TargetMode is Internal"); // Additional check - Verify if the Enum value is valid Debug.Assert ((targetMode >= TargetMode.Internal || targetMode <= TargetMode.External), "TargetMode enum value is out of Range"); // Look for empty string or string with just spaces Debug.Assert(relationshipType.Trim() != String.Empty, "RelationshipType cannot be empty string or a string with just spaces"); _package = package; _source = sourcePart; _targetUri = targetUri; _relationshipType = relationshipType; _targetMode = targetMode; _id = id; } #endregion Internal Constructor //----------------------------------------------------- // // Internal Properties // //------------------------------------------------------ #region Internal Properties internal static Uri ContainerRelationshipPartName { get { return _containerRelationshipPartName; } } // Property used in streaming production to be able to keep the set // of all properties that have been created in memory while knowing // which remain to be written to XML. internal bool Saved { get { return _saved; } set { _saved = value; } } #endregion Internal Properties //----------------------------------------------------- // // Internal Methods // //------------------------------------------------------ // None //------------------------------------------------------ // // Internal Events // //----------------------------------------------------- // None //------------------------------------------------------ // // Private Methods // //----------------------------------------------------- // None //----------------------------------------------------- // // Private Fields // //----------------------------------------------------- #region Private Members private Package _package; private PackagePart _source; private Uri _targetUri; private string _relationshipType; private TargetMode _targetMode; private String _id; private bool _saved = false; private static readonly Uri _containerRelationshipPartName = PackUriHelper.CreatePartUri(new Uri("/_rels/.rels", UriKind.Relative)); #endregion Private Members } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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