/// <summary>
/// Raises the <see cref="E:NodesIndexing"/> event.
/// </summary>
/// <param name="e">The <see cref="Examine.IndexingNodesEventArgs"/> instance containing the event data.</param>
protected virtual void OnNodesIndexing(IndexingNodesEventArgs e)
{
if (NodesIndexing != null)
NodesIndexing(this, e);
}
/// <summary>
/// Builds an xpath statement to query against Umbraco data for the index type specified, then
/// initiates the re-indexing of the data matched.
/// </summary>
/// <param name="type"></param>
protected override void PerformIndexAll(string type)
{
if (!SupportedTypes.Contains(type))
return;
var xPath = "//*[(number(@id) > 0 and (@isDoc or @nodeTypeAlias)){0}]"; //we'll add more filters to this below if needed
var sb = new StringBuilder();
//create the xpath statement to match node type aliases if specified
if (IndexerData.IncludeNodeTypes.Count() > 0)
{
sb.Append("(");
foreach (var field in IndexerData.IncludeNodeTypes)
{
//this can be used across both schemas
const string nodeTypeAlias = "(@nodeTypeAlias='{0}' or (count(@nodeTypeAlias)=0 and name()='{0}'))";
sb.Append(string.Format(nodeTypeAlias, field));
sb.Append(" or ");
}
sb.Remove(sb.Length - 4, 4); //remove last " or "
sb.Append(")");
}
//create the xpath statement to match all children of the current node.
if (IndexerData.ParentNodeId.HasValue && IndexerData.ParentNodeId.Value > 0)
{
if (sb.Length > 0)
sb.Append(" and ");
sb.Append("(");
sb.Append("contains(@path, '," + IndexerData.ParentNodeId.Value + ",')"); //if the path contains comma - id - comma then the nodes must be a child
sb.Append(")");
}
//create the full xpath statement to match the appropriate nodes. If there is a filter
//then apply it, otherwise just select all nodes.
var filter = sb.ToString();
xPath = string.Format(xPath, filter.Length > 0 ? " and " + filter : "");
//raise the event and set the xpath statement to the value returned
var args = new IndexingNodesEventArgs(IndexerData, xPath, type);
OnNodesIndexing(args);
if (args.Cancel)
{
return;
}
xPath = args.XPath;
DataService.LogService.AddVerboseLog(-1, string.Format("({0}) PerformIndexAll with XPATH: {1}", this.Name, xPath));
AddNodesToIndex(xPath, type);
}
