/// <summary>
/// Inserts field value into item.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="field">The field.</param>
/// <param name="creatingNewItem">Whether the item under update is new or not (controls logging verbosity)</param>
/// <exception cref="T:Sitecore.Data.Serialization.Exceptions.FieldIsMissingFromTemplateException"/>
protected virtual bool PasteField(Item item, IItemFieldValue field, bool creatingNewItem)
{
if (!_fieldFilter.Includes(field.FieldId))
{
_logger.SkippedPastingIgnoredField(item, field);
return(false);
}
Template template = AssertTemplate(item.Database, item.TemplateID, item.Paths.Path);
if (template.GetField(new ID(field.FieldId)) == null)
{
item.Database.Engines.TemplateEngine.Reset();
template = AssertTemplate(item.Database, item.TemplateID, item.Paths.Path);
}
if (template.GetField(new ID(field.FieldId)) == null)
{
throw new TemplateMissingFieldException(item.TemplateName, item.Database.Name + ":" + item.Paths.FullPath, field);
}
Field itemField = item.Fields[new ID(field.FieldId)];
if (itemField.IsBlobField)
{
Guid existingBlobId;
bool hasExistingId = Guid.TryParse(itemField.Value, out existingBlobId);
// serialized blob has no value (media item with detached media)
if (!field.BlobId.HasValue)
{
if (!hasExistingId || existingBlobId == Guid.Empty)
{
return(false); // no blob ID and none in DB either, so we're cool
}
// existing blob in DB but none in serialized
// so clear the blob and field value
ItemManager.RemoveBlobStream(existingBlobId, item.Database);
itemField.SetValue(string.Empty, true);
_logger.WroteBlobStream(item, field);
return(true);
}
// check if existing blob is here with the same ID; abort if so
if (hasExistingId && existingBlobId == field.BlobId.Value)
{
return(false);
}
byte[] buffer = Convert.FromBase64String(field.Value);
// if an existing blob of a different ID exists, drop it from the database
if (existingBlobId != default(Guid))
{
ItemManager.RemoveBlobStream(existingBlobId, item.Database);
}
// write the new blob to the database
ItemManager.SetBlobStream(new MemoryStream(buffer, false), field.BlobId.Value, item.Database);
// set the value of the blob field to the correct blob ID
itemField.SetValue(MainUtil.GuidToString(field.BlobId.Value), true);
if (!creatingNewItem)
{
_logger.WroteBlobStream(item, field);
}
return(true);
}
if (field.Value != null && !field.Value.Equals(itemField.GetValue(false, false)))
{
var oldValue = itemField.Value;
itemField.SetValue(field.Value, true);
if (!creatingNewItem)
{
_logger.UpdatedChangedFieldValue(item, field, oldValue);
}
return(true);
}
return(false);
}
/// <summary>
/// Inserts field value into item.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="field">The field.</param>
/// <param name="creatingNewItem">Whether the item under update is new or not (controls logging verbosity)</param>
/// <exception cref="T:Sitecore.Data.Serialization.Exceptions.FieldIsMissingFromTemplateException"/>
protected virtual bool PasteField(Item item, IItemFieldValue field, bool creatingNewItem)
{
if (!_fieldFilter.Includes(field.FieldId))
{
_logger.SkippedPastingIgnoredField(item, field);
return(false);
}
Template template = AssertTemplate(item.Database, item.TemplateID, item.Paths.Path);
if (template.GetField(new ID(field.FieldId)) == null)
{
item.Database.Engines.TemplateEngine.Reset();
template = AssertTemplate(item.Database, item.TemplateID, item.Paths.Path);
}
if (template.GetField(new ID(field.FieldId)) == null)
{
throw new TemplateMissingFieldException(item.TemplateName, item.Database.Name + ":" + item.Paths.FullPath, field);
}
Field itemField = item.Fields[new ID(field.FieldId)];
if (itemField.IsBlobField)
{
if (!field.BlobId.HasValue)
{
throw new InvalidOperationException("Field " + field.FieldId + " is a blob field, but it had no blob ID.");
}
// check if existing blob is here with the same ID; abort if so
Guid existingBlobId;
if (Guid.TryParse(itemField.Value, out existingBlobId) && existingBlobId == field.BlobId.Value)
{
return(false);
}
byte[] buffer = Convert.FromBase64String(field.Value);
// if an existing blob of a different ID exists, drop it from the database
if (existingBlobId != default(Guid))
{
ItemManager.RemoveBlobStream(existingBlobId, item.Database);
}
// write the new blob to the database
ItemManager.SetBlobStream(new MemoryStream(buffer, false), field.BlobId.Value, item.Database);
// set the value of the blob field to the correct blob ID
itemField.SetValue(MainUtil.GuidToString(field.BlobId.Value), true);
if (!creatingNewItem)
{
_logger.WroteBlobStream(item, field);
}
return(true);
}
if (field.Value != null && !field.Value.Equals(itemField.GetValue(false, false)))
{
var oldValue = itemField.Value;
itemField.SetValue(field.Value, true);
if (!creatingNewItem)
{
_logger.UpdatedChangedFieldValue(item, field, oldValue);
}
return(true);
}
return(false);
}