SharePoint Fast Search2010 Incremental Crawl BCS

1. You can add these properties to your list methodInstance in bdc file and deploy again. 

   <MethodInstance Type="Finder" ReturnParameterName="DocumentReadList" Default="true" Name="DocumentReadList" DefaultDisplayName="ProductDocument Read List">          <Properties>        <Property Name="LastModifiedTimeStampField" Type="System.String">YourModifiedDateField</Property>   </Properties>   </MethodInstances>

   For IdEnumerator set __BdcLastModifiedTimestamp Property
   

   <Properties> <Property Name="__BdcLastModifiedTimestamp" Type="System.String">LastModifiedOn</Property> </Properties>

1. You can add these properties to your list method of entity using PowerShell:
   $entity = Get-SPBusinessDataCatalogMetadataObject  –BdcObjectType “Entity” –Name “EntityName” –Namespace “ModelNameSpace” -ServiceContext adminurl
   $methodinstance = $entity.MethodInstances | where {$_.Name –eq “ReadListName”}
   $methodinstance.Properties.Add("LastModifiedTimeStampField", YourModifiedDateField)
   $methodinstance.Update()

You can check sample of:

HOW TO: Create a Searchable SharePoint 2010 BDC .NET Assembly Connector Which Reads From A Flat File

Metadata Mappings Common Mistake

  When you want manage Metadata Mapping, Somebody use link exists in Queries and Results.
This link is not correct for SharePoint Fast Search2010, You should Manage Metadata mapping from Fast Search Administration.

Fast AutoDiscover Properties

Sometimes will find crawler discover my object crawler properties automatically.  You need to make sure Category Properties defined to allow auto discover. Check Auto Discover property from Fast Search Administration.(You can go to this from any of Fast Service Management)

Also you can set it from PowerShell:

Set-FASTSearchMetadataCategory  –Name “Category” –DiscoverNewProperties $flag

Flag is true/false

Set-FASTSearchMetadataCategory  –Name “Business Data” –DiscoverNewProperties $true

Also you can add your crawled properties manual using PowerShell:

$guid = [guid]::NewGuid()

New-FASTSearchMetadataCategory -Name MoreWeb -Propset $guid

New-FASTSearchMetadataCrawledProperty -Name ExtendedTitle -Propset $guid -Varianttype 31

Enable BCS Content Type to be crawled

When tried to crawl my business data catalogs and select Business data from content source, You didn’t find my business data.
Check External Content Type information. You will find its property Crawlable is No you need to update it to Yes like Figure Below:

This occurs because I didn’t define properties RootFinder or UseClientCachingForSearch to my list Method.

To Solve this problem you have two options:

1. You can add these properties to your list methodInstance in bdc file and deploy again.
2. You can add these properties to your list method of entity using PowerShell:
   
   $entity = Get-SPBusinessDataCatalogMetadataObject  –BdcObjectType “Entity” –Name “EntityName” –Namespace “ModelNameSpace” -ServiceContext adminurl
   $methodinstance = $entity.MethodInstances | where {$_.Name –eq “ReadListName”}
   $methodinstance.Properties.Add(“RootFinder”, “”)
   $methodinstance.Properties.Add(“UseClientCachingForSearch”, “”)
   $methodinstance.Update()

Add items to the autocomplete using PowerShell

If you want to add multiple keywords to autosuggestion of fast:

1. Create file with keywords separated by newline.
2. Run Command below to add elements from your file to auto suggest list.Get-content “Auto Suggest File Path” | foreach-object {   New-SPEnterpriseSearchLanguageResourcePhrase –SearchApplication “FastQuery” –Language en-US –Type QuerySuggestionAlwaysSuggest –Name $_ }
3. Use Commands below to refresh the cache:
   $timer=Get-SPTimerJob|? {$_.Name –eq “Prepare Query Suggestions”}
   $timer.RunNow()

Creating a FAST Search Scope

When you try to create scope in Fast Search Search 2010. This will not work only way to create scope in SharePoint Search using PowerShell. Command Below is sample of command for creating scope:

New-SPEnterpriseSearchQueryScope -SearchApplication "FAST Query Application" -Name "NewScope" -Description "This is my new scope" -DisplayInAdminUI 1 -ExtendedSearchFilter 'path:starts-with("http://myserver/mysitecoll")'

The ExtendedSearchFilter parameter specifies a FAST Query Language (FQL) expression that will filter the content for that scope.

There is 2 good blogs talk about Fast Search scope:
http://blogs.msdn.com/b/jorgeni/archive/2010/02/26/search-scopes-in-fast-search-for-sharepoint-part-1.aspx

http://blogs.msdn.com/b/jorgeni/archive/2010/03/11/search-scopes-in-fast-search-for-sharepoint-part-2.aspx