internal XsltGeneratorContext CreateCopy(PSMElement newBodyNode)
{
XsltGeneratorContext newContext = CreateCopy();
newContext.BodyNode = newBodyNode;
return(newContext);
}
internal XsltGeneratorContext CreateCopy(XmlElement newBodyElement)
{
XsltGeneratorContext newContext = CreateCopy();
newContext.BodyElement = newBodyElement;
return(newContext);
}
/// <summary>
/// <para>
/// Returns expresion where <paramref name="attributes" /> are converted to their relative
/// XPath expressions and joined with "," operator.
/// </para>
/// The XPath expressions are modified so that the part belonging to represented class
/// is replaced with the part belonging to structural representative
/// </summary>
/// <example>
/// sequence {Item/prod-red/@ProductSet Item/prod-red/@Category}
/// is returned as "Item/prod-blue/@ProductSet, Item/prod-blue/@Category"
/// where prod-blue is a structural representative of prod-red.
/// </example>
public static XPathExpr AttributeListWithSRSubstitution(XsltGeneratorContext context, IEnumerable <NodeAttributeWrapper> attributes, IFromStructuralRepresentative structuralRepresentativeReplacement, bool onlyExisting, string concatOperator)
{
List <XPathExpr> modified = new List <XPathExpr>();
foreach (PSMAttribute attribute in attributes.Inline())
{
if (onlyExisting && !attribute.ExistsInVersion(context.ChangeSet.OldVersion))
{
continue;
}
XPathExpr expr;
if (structuralRepresentativeReplacement != null)
{
expr = GroupAwareProjectXPathWithSRSubstitution(context, attribute, structuralRepresentativeReplacement);
}
else
{
expr = GroupAwareProjectXPath(context, attribute, context.ChangeSet.OldVersion);
}
modified.Add(expr);
}
return(new XPathExpr(modified.ConcatWithSeparator(concatOperator)));
}
internal XsltGeneratorContext CreateCopy(Modifiers addedModifiers)
{
XsltGeneratorContext newContext = CreateCopy();
newContext.Modifiers |= addedModifiers;
return(newContext);
}
internal XsltGeneratorContext CreateCopy(XmlElement newBodyElement, Modifiers addedModifiers)
{
XsltGeneratorContext newContext = CreateCopy();
newContext.Modifiers |= addedModifiers;
newContext.BodyElement = newBodyElement;
return(newContext);
}
/// <summary>
/// Converts path <paramref name="oldPath"/>
/// into a path relative to <paramref name="context"/>.<see cref="XsltGeneratorContext.ProcessedPath"/>.
/// (and also relative to <paramref name="context"/>.<see cref="XsltGeneratorContext.ContentGroupPath"/> if it is used).
/// </summary>
/// <param name="context">current generator context</param>
/// <param name="oldPath">projected path</param>
/// <returns>relative xpath expression</returns>
public static XPathExpr GroupAwareProjectXPathWithoutAttributeCorrection(XsltGeneratorContext context, XPathExpr oldPath)
{
if (context.InGroup && oldPath.HasPrefix(context.ContentGroupPath))
{
oldPath = oldPath.InsertAfterPrefix(context.ContentGroupPath, "/$cg");
}
XPathExpr tmp = ProjectXPath(context.ProcessedPath, oldPath, context.InGroup);
return(tmp);
}
/// <summary>
/// <para>
/// Returns expresion where <paramref name="nodeContents" /> are converted to their relative
/// XPath expressions and joined with "," operator.
/// </para>
/// The XPath expressions are modified so that the part belonging to represented class
/// is replaced with the part belonging to structural representative
/// </summary>
/// <example>
/// sequence {Item/prod-red/ProductSet Item/prod-red/Category}
/// is returned as "Item/prod-blue/ProductSet, Item/prod-blue/Category"
/// where prod-blue is a structural representative of prod-red.
/// </example>
public static XPathExpr ElementsListWithSRSubstitution(XsltGeneratorContext context, IEnumerable <NodeElementWrapper> nodeContents, IFromStructuralRepresentative structuralRepresentativeReplacement, string concatOperator)
{
List <XPathExpr> modified = new List <XPathExpr>();
foreach (PSMElement element in nodeContents.Inline().Where(c => c.ModelsElement()))
{
XPathExpr expr;
if (structuralRepresentativeReplacement != null)
{
expr = GroupAwareProjectXPathWithSRSubstitution(context, element, structuralRepresentativeReplacement);
}
else
{
expr = GroupAwareProjectXPath(context, element, context.ChangeSet.OldVersion);
}
modified.Add(expr);
}
return(new XPathExpr(modified.ConcatWithSeparator(concatOperator)));
}
/// <summary>
/// Converts path to <paramref name="psmElementNewVersion"/>
/// into a path relative to <paramref name="context"/>.<see cref="XsltGeneratorContext.ProcessedPath"/>.
/// (and also relative to <paramref name="context"/>.<see cref="XsltGeneratorContext.ContentGroupPath"/> if it is used).
/// If context is in group (<see cref="XsltGeneratorContext"/>.<see cref="XsltGeneratorContext.InGroup"/>) which
/// has group attributes and <paramref name="psmElementNewVersion"/> is one of these attributes, the returned path
/// is modified to use the '$attributes' variable.
/// </summary>
/// <param name="context">current generator context</param>
/// <param name="psmElementNewVersion">element for which the path is projected</param>
/// <param name="oldVersion">old version, used to determine the path to <paramref name="psmElementNewVersion"/> in the
/// old version of the diagram</param>
/// <returns>relative xpath expression</returns>
public static XPathExpr GroupAwareProjectXPath(XsltGeneratorContext context, PSMElement psmElementNewVersion, Version oldVersion)
{
XPathExpr oldPath = ((PSMElement)psmElementNewVersion.GetInVersion(oldVersion)).XPathE();
if (context.InGroup && oldPath.HasPrefix(context.ContentGroupPath))
{
oldPath = oldPath.InsertAfterPrefix(context.ContentGroupPath, "/$cg");
}
XPathExpr tmp = ProjectXPath(context.ProcessedPath, oldPath, context.InGroup);
if (context.InGroup && context.ContentGroupAttributes != null && psmElementNewVersion is PSMAttribute &&
context.ContentGroupAttributes.Contains((PSMAttribute)psmElementNewVersion))
{
if (tmp.ToString().StartsWith(XPathExpr.CurrentGroupVariableExpr))
{
tmp = new XPathExpr(tmp.ToString().Replace(XPathExpr.CurrentGroupVariableExpr, "$attributes"));
}
}
return(tmp);
}
internal XsltGeneratorContext CreateCopy()
{
XsltGeneratorContext newContext = new XsltGeneratorContext(this.ChangeSet, this.BodyNode)
{
BodyElement = this.BodyElement,
Modifiers = this.Modifiers,
CurrentContentNode = this.CurrentContentNode,
Template = this.Template,
ProcessedPath = this.ProcessedPath,
CurrentAttribute = this.CurrentAttribute,
CurrentContentGroup = this.CurrentContentGroup,
InGroup = this.InGroup,
ContentGroupAttributes = this.ContentGroupAttributes,
CurrentStructuralRepresentativeElements = this.CurrentStructuralRepresentativeElements,
CurrentStructuralRepresentativeAttributes = this.CurrentStructuralRepresentativeAttributes,
CurrentChoiceElements = this.CurrentChoiceElements,
CurrentChoiceAttributes = this.CurrentChoiceAttributes,
CurrentUnionElements = this.CurrentUnionElements,
CurrentUnionAttributes = this.CurrentUnionAttributes
};
return(newContext);
}
/// <summary>
/// Performs <see cref="GroupAwareProjectXPath"/> and substitutes steps in the result path according
/// to structural representative information. (So the path is relative to the structural representative)
/// </summary>
/// <param name="context">The generator context.</param>
/// <param name="element">The element.</param>
/// <param name="structuralRepresentativeReplacement">The structural representative replacement.</param>
/// <returns></returns>
public static XPathExpr GroupAwareProjectXPathWithSRSubstitution(XsltGeneratorContext context, PSMElement element, IFromStructuralRepresentative structuralRepresentativeReplacement)
{
XPathExpr expr;
if (structuralRepresentativeReplacement != null)
{
var cp = context.ProcessedPath;
//if (PSMTreeIterator.AreInTheSamePSMTree(structuralRepresentativeReplacement.RepresentedPSMClass, structuralRepresentativeReplacement.StructuralRepresentative))
PSMElement representedOldAnc = PSMTreeIterator.GetSignificantAncestorOrSelf((PSMClass)structuralRepresentativeReplacement.RepresentedPSMClass.GetInVersion(context.ChangeSet.OldVersion));
PSMElement structuralRepresentativeOldAnc = PSMTreeIterator.GetSignificantAncestorOrSelf((PSMClass)structuralRepresentativeReplacement.StructuralRepresentative.GetInVersion(context.ChangeSet.OldVersion));
if (representedOldAnc != null)
{
context.ProcessedPath = GetXPathForNode(representedOldAnc, context.ChangeSet.OldVersion);
}
else
{
context.ProcessedPath = new XPathExpr("<virt-root>");
if (context.InGroup)
{
context.ProcessedPath = context.ProcessedPath.Append("/$cg");
}
}
string from = representedOldAnc != null?XsltTemplateNameManager.GetElementNameForSignificantElement(representedOldAnc) : null;
string to = structuralRepresentativeOldAnc != null?XsltTemplateNameManager.GetElementNameForSignificantElement(structuralRepresentativeOldAnc) : null;
XPathExpr e = null;
if (from != null && to != null &&
!(context.ProcessedPath.ToString().EndsWith(from) && cp.ToString().EndsWith(to)))
{
e = ProjectXPath(cp, context.ProcessedPath, false);
if (!XPathExpr.IsNullOrEmpty(e) && !String.IsNullOrEmpty(to) && !String.IsNullOrEmpty(from))
{
if (e.ToString().Contains(from))
{
e = new XPathExpr(e.ToString().Replace(from, to));
}
}
}
expr = GroupAwareProjectXPath(context, element, context.ChangeSet.OldVersion);
if (!XPathExpr.IsNullOrEmpty(e))
{
// ReSharper disable PossibleNullReferenceException
expr = e.Append("/" + expr);
}
// ReSharper restore PossibleNullReferenceException
context.ProcessedPath = cp;
}
else
{
expr = GroupAwareProjectXPath(context, element, context.ChangeSet.OldVersion);
}
return(expr);
}
