/// <summary>
/// Retrieve an existing feed that is mapped to hold sitelinks. The first
/// active sitelinks feed is retrieved by this method.
/// </summary>
/// <param name="feedMappingService">The feed mapping service.</param>
/// <returns>A SiteLinksFeed if a feed is found, or null otherwise.</returns>
private static SiteLinksFeed getExistingFeed(FeedMappingService feedMappingService)
{
Selector selector = new Selector();
selector.fields = new string[] {"FeedId", "FeedMappingId", "PlaceholderType", "Status",
"AttributeFieldMappings"};
Predicate placeHolderPredicate = new Predicate();
placeHolderPredicate.field = "PlaceholderType";
placeHolderPredicate.@operator = PredicateOperator.EQUALS;
placeHolderPredicate.values = new string[] {PLACEHOLDER_SITELINKS.ToString()};
Predicate statusPredicate = new Predicate();
statusPredicate.field = "Status";
statusPredicate.@operator = PredicateOperator.EQUALS;
statusPredicate.values = new string[] {"ACTIVE"};
selector.predicates = new Predicate[] {placeHolderPredicate, statusPredicate};
FeedMappingPage page = feedMappingService.get(selector);
if (page != null && page.entries != null && page.entries.Length > 0) {
foreach (FeedMapping feedMapping in page.entries) {
long? feedId = feedMapping.feedId;
long? textAttributeId = null;
long? urlAttributeId = null;
foreach (AttributeFieldMapping attributeMapping in feedMapping.attributeFieldMappings) {
if (attributeMapping.fieldId == PLACEHOLDER_FIELD_SITELINK_LINK_TEXT) {
textAttributeId = attributeMapping.feedAttributeId;
} else if (attributeMapping.fieldId == PLACEHOLDER_FIELD_SITELINK_URL) {
urlAttributeId = attributeMapping.feedAttributeId;
}
}
if (feedId != null && textAttributeId != null && urlAttributeId != null) {
SiteLinksFeed siteLinksFeed = new SiteLinksFeed();
siteLinksFeed.SiteLinksFeedId = feedId.Value;
siteLinksFeed.LinkTextFeedAttributeId = textAttributeId.Value;
siteLinksFeed.LinkUrlFeedAttributeId = urlAttributeId.Value;
return siteLinksFeed;
}
}
}
return null;
}
/// <summary>
/// Map the feed for use with Sitelinks.
/// </summary>
/// <param name="feedMappingService">The feed mapping service.</param>
/// <param name="siteLinksFeed">The feed for holding sitelinks.</param>
private static void createSiteLinksFeedMapping(FeedMappingService feedMappingService,
SiteLinksFeed siteLinksFeed)
{
// Map the FeedAttributeIds to the fieldId constants.
AttributeFieldMapping linkTextFieldMapping = new AttributeFieldMapping();
linkTextFieldMapping.feedAttributeId = siteLinksFeed.LinkTextFeedAttributeId;
linkTextFieldMapping.fieldId = PLACEHOLDER_FIELD_SITELINK_LINK_TEXT;
AttributeFieldMapping linkUrlFieldMapping = new AttributeFieldMapping();
linkUrlFieldMapping.feedAttributeId = siteLinksFeed.LinkUrlFeedAttributeId;
linkUrlFieldMapping.fieldId = PLACEHOLDER_FIELD_SITELINK_URL;
// Create the FieldMapping and operation.
FeedMapping feedMapping = new FeedMapping();
feedMapping.placeholderType = PLACEHOLDER_SITELINKS;
feedMapping.feedId = siteLinksFeed.SiteLinksFeedId;
feedMapping.attributeFieldMappings =
new AttributeFieldMapping[] {linkTextFieldMapping, linkUrlFieldMapping};
FeedMappingOperation operation = new FeedMappingOperation();
operation.operand = feedMapping;
operation.@operator = Operator.ADD;
// Save the field mapping.
feedMappingService.mutate(new FeedMappingOperation[] {operation});
}
