Under the "Bulk Crawled Property Settings" section make sure the "Automatically discover new properties when crawl takes place" is checked along with the "Map all string properties in this category to the Content managed property" and the "Automatically generate a new managed property for each crawled property discovered in this category" options. Making sure these options are on ensures that managed properties are automatically created when new SharePoint columns are created. Your solution can use these new managed properties to present to the user. Unfortunately, the name of the managed property is not that user friendly. SharePoint crawled properties are prefixed with an "ows_" and the auto generated managed property is prefixed with "ows". For example, if a user creates a new column in a document library called "CustomerName" then the crawled property will be "ows_CustomerName" and the managed property will be "owsCustomerName". If you don't want to display this to your users then you will have to write some code to parse out the real column name and make sure you map it back to the managed property name when constructing your query. Additional parsing may be needed if the column name has spaces in it. For instance if a user creates a column named "Customer Name" then the crawled property will be "ows_Customer_x0020_Name" and the managed property will be "owsCustomerx0020Name".
http://www.sharepointblogs.com/smc750/archive/2007/06/20/custom-cross-list-search-development-pitfalls-part-one.aspx
Recommended Guidelines for Search Boundaries
I have been asked a lot for guidelines around some of the boundaries for MOSS Search. Here is a quick table that does a good job on this:
|
Search object |
Guidelines for acceptable performance |
Notes |
|
Search indexes |
One per SSP
Maximum of 20 per farm |
MOSS supports one content index per SSP. Given that we recommend a maximum of 20 SSPs per farm, a maximum of 20 content indexes is supported.
Note that an SSP can be associated with only one index server and one content index. However, an index server can be associated with multiple SSPs and have a content index for each SSP. |
|
Indexed documents |
50,000,000 per content index |
MOSS supports 50 million documents per index server. |
|
Content sources |
500 per SSP |
This is a hard limit enforced by the system. |
|
Start Addresses |
500 per content source |
This is a hard limit enforced by the system. |
|
Alerts |
1,000,000 per SSP |
This is the tested limit. |
|
Scopes |
200 per site |
This is a recommended limit per site. We recommend a maximum of 100 scope rules per scope. |
|
Display groups |
25 per site |
These are used for a grouped display of scopes through the user interface. |
|
Crawl rules |
10,000 per SSP |
We recommend a maximum 10,000 crawl rules irrespective of type. |
|
Keywords |
15,000 per site |
We recommend a maximum of 10 Best Bets and five synonyms per keyword. |
|
Crawled properties |
500,000 per SSP |
These are properties that are discovered during a crawl. |
|
Managed properties |
100,000 per SSP |
These are properties used by the search system in queries. Crawled properties are mapped to managed properties. We recommend a maximum of 100 mappings per managed property. |
|
Authoritative pages |
200 per relevance level |
This is the maximum number of sites in each of the four relevance levels. |
|
Results removal |
100 |
This is the maximum recommended number of URLs that should be removed from the system in one operation. |
|
Crawl logs |
50,000,000 |
Number of individual log entries in the crawl log. |
For more information, see the "Plan for Software Boundaries" at: http://technet2.microsoft.com/Office/en-us/library/6a13cd9f-4b44-40d6-85aa-c70a8e5c34fe1033.mspx?mfr=true
MOSS Search - Some Microsoft Links
I have been compiling links to current documents/links/articles on Mcirosoft related sites regarding Microsoft Office SharePoint Server 2007 Search. I am sure there are more links out there, but this is a good list to start with:
Microsoft Enterprise Search
I just wanted to make sure that folks are aware of some blog postings and links/whitepapers that Microsoft has today regarding Enterprise Search:
Also take a look at Microsoft's Enterprise Search page at: http://www.microsoft.com/livesearch/default.mspx
Also take a look at Windows Desktop Search home page at: http://www.microsoft.com/windows/desktopsearch/default.mspx
Also look at Microsoft Office SharePoint Server 2007 at: http://office.microsoft.com/en-us/sharepointserver/default.aspx
There is also a great whitepaper at: http://download.microsoft.com/download/6/b/3/6b303b61-dbf9-4d20-907c-c8d7213d112b/May%202006%20Enterprise%20Search%20Whitepaper.doc
Hope that helps
Mike
- Helping users quickly find and retrieve e-mail messages, documents, and many other file types located on their PC and company network.
- Providing a familiar, integrated, and convenient search experience for Windows users.
- Working with other Microsoft search technologies such as Live Search and Microsoft Office SharePoint Services 2007.
http://www.microsoft.com/windows/desktopsearch/default.mspx
TechCenter Microsoft Office SharePoint Server for Search
Certains liens sur cette page pointent vers des ressources en anglais. Merci de votre compréhension.
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Le TechCenter Office SharePoint Server for Search permet de vous connecter aux ressources techniques sur les technologies SharePoint 2007 for Search proposées par Microsoft et la communauté Office en général.
Ressources disponibles
Dernière mise à jour : 30 mars 2007
Bibliothèque technique SharePoint Server 2007 for Search
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--
Erol GIRAUDY.
Président du Club SPS FRANCE
Vice-Président du Club OFFICE 2007
MVP SharePoint Microsoft France.
http://clubmoss2007.org