Data extraction stitchers

The sole purpose of these stitchers is to take a single event data string in standard format, and parse the string to extract a single value, which is returned.

The following table describes the data extraction stitchers.

Table 1. Data extraction stitchers

Stitcher	Description	Returns
ExtractEntPhysIndex.stch	Attempts to extract a textual value representing an interface identifier from an input data string of the form "entPhysicalEntry.string identifier". Typically, this is used to extract the value from an event field such as LocalPriObj or LocalRootObj.	Integer representing a physical index.
ExtractIfIndex.stch	Attempts to extract the integer value representing an interface identifier from an input data string of the form "ifEntry.numerical identifier". Typically, this is used to extract the ifIndex value from an event field such as LocalPriObj or LocalRootObj.	Integer index
ExtractIfString.stch	Attempts to extract a textual value representing an interface identifier from an input data string of the form "ifEntry.string identifier". Typically, this is used to extract the ifIndex value from an event field such as LocalPriObj or LocalRootObj.	String representing an interface string, ifString.