PDFlib TET PDF IFilter 4.0 Manual

Table 1.1 Query syntax examples for Windows Search 3.0 and above
Search term example
Hol
Holmes AND Watson
Holmes + Watson
Holmes Watson
(Holmes Watson)
"Sherlock Holmes"
Holmes OR Watson
Holmes NOT Mowgli
Holmes -Mowgli
Explanation
document contents or any property contain words starting with Hol
document contents contain both Holmes and Watson
document contents contain the exact phrase Sherlock Holmes
document contents contain either Holmes or Watson
document contents contain the term Holmes, but not the term Mowgli
Programmatically querying the index. In addition to interactive queries you can also
query the WDS index programmatically. Accessing the search index can be accomplished
via the ADO (ActiveX Data Objects) interface and SQL syntax extensions which
present the search index through a database-like programming interface. More details
on programmatically querying the index can be found at
msdn.microsoft.com/en-us/library/bb266517(VS.85).asp
See »SQL queries for metadata properties«, page 50, for WDS metadata queries with SQL.
Limitations. In our testing we ran into the following intrinsic limitations of WDS:
> The generated catalog entry for a document will not exceed a size of ca. 1 MB. If a document
creates larger catalog entries WDS will ignore the remaining text. At a typical
size of ca. 3KB text per page this amounts to more than 300 pages of text. However,
there is not a strict limit so the results may vary. The only known workaround for
this limitation in WDS is to split large documents into multiple smaller parts.
> PDF documents will not be indexed as long as they are opened in Acrobat. We recommend
to close Acrobat before creating the search index.
> Searching for custom metadata properties interactively does not work, while programmatic
searches (e.g. with PowerShell) do work.
1.1 Windows Search 9