/**
* Create a new child POIXMLDocumentPart
*
* @param descriptor the part descriptor
* @param factory the factory that will create an instance of the requested relation
* @param idx part number
* @param noRelation if true, then no relationship is Added.
* @return the Created child POIXMLDocumentPart
*/
protected POIXMLDocumentPart CreateRelationship(POIXMLRelation descriptor, POIXMLFactory factory, int idx, bool noRelation)
{
try
{
PackagePartName ppName = PackagingUriHelper.CreatePartName(descriptor.GetFileName(idx));
PackageRelationship rel = null;
PackagePart part = packagePart.Package.CreatePart(ppName, descriptor.ContentType);
if (!noRelation)
{
/* only add to relations, if according relationship is being Created. */
rel = packagePart.AddRelationship(ppName, TargetMode.Internal, descriptor.Relation);
}
POIXMLDocumentPart doc = factory.CreateDocumentPart(descriptor);
doc.packageRel = rel;
doc.packagePart = part;
doc.parent = this;
if (!noRelation)
{
/* only add to relations, if according relationship is being Created. */
AddRelation(rel.Id, doc);
}
return(doc);
}
catch (PartAlreadyExistsException pae)
{
// Return the specific exception so the user knows
// that the name is already taken
throw pae;
}
catch (Exception e)
{
// Give a general wrapped exception for the problem
throw new POIXMLException(e);
}
}
/**
* Iterate through the underlying PackagePart and create child POIXMLFactory instances
* using the specified factory
*
* @param factory the factory object that Creates POIXMLFactory instances
* @param context context map Containing already visited noted keyed by tarGetURI
*/
protected void Read(POIXMLFactory factory, Dictionary <PackagePart, POIXMLDocumentPart> context)
{
try
{
PackageRelationshipCollection rels = packagePart.Relationships;
foreach (PackageRelationship rel in rels)
{
if (rel.TargetMode == TargetMode.Internal)
{
Uri uri = rel.TargetUri;
PackagePart p;
if (uri.OriginalString.IndexOf('#') >= 0)
{
/*
* For internal references (e.g. '#Sheet1!A1') the namespace part is null
*/
p = null;
}
else
{
PackagePartName relName = PackagingUriHelper.CreatePartName(uri);
p = packagePart.Package.GetPart(relName);
if (p == null)
{
logger.Log(POILogger.ERROR, "Skipped invalid entry " + rel.TargetUri);
continue;
}
}
if (p == null || !context.ContainsKey(p))
{
POIXMLDocumentPart childPart = factory.CreateDocumentPart(this, rel, p);
childPart.parent = this;
AddRelation(rel.Id, childPart);
if (p != null)
{
context[p] = childPart;
if (p.HasRelationships)
{
childPart.Read(factory, context);
}
}
}
else
{
AddRelation(rel.Id, context[p]);
}
}
}
}
catch (Exception ex)
{
if ((null != ex.InnerException) && (null != ex.InnerException.InnerException))
{
// this type of exception is thrown when the XML Serialization does not match the input.
logger.Log(1, ex.InnerException.InnerException);
}
throw;
}
}