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What about the variable, such as the linksLock, in our web crawler example The lock statement requires a variable in parentheses because it needs to acquire what's called a mutual-exclusion lock (i.e. mutex) on an object in order to function. Specifying an object also has the benefit of being able to use the same lock for multiple blocks. For example, imagine that in your web crawler application you had two methods that modified the links.txt file: one method that added a line of text and one that removed a line of text. Not only would both methods need exclusive access to data, but also the same data. You couldn't, therefore, allow AddLine and RemoveLine to execute simultaneously. For those cases, locking on the same variable, as follows, is not only acceptable but necessary.
The database accession number in the search results has a HTML link to retrievethe complete entry including comments from a remote database. In order for thislink to be created the programs need to know the URL for the remote database.This is accomplished through parameters contained inthe displayMsparamsDir ();acclinks.txtfile. Occasionally the URL's to the remote database mayneed to be updated, or new ones added for a new database. This requiresediting of the displayMsparamsDir ();acclinks.txt file.
As mentioned above the prefix name can refer to a single database or a set of databases. For exampleif you have two user created databases called PA3_mouse and PA33_mouse, an entry in the acclinks.txt file of the form:
The displayMsparamsDir ();upidlinks.txt file contains theremote database URL definitions from gene names in the Protein Prospector results pages. Currently genenames are only reported in the Search Compare output.
The MS-Digest index number in the search results has an HTML link to retrievean MS-Digest listing for the matched database entry. In order for thislink to be created the programs need to know the URL to MS-Digest and some defaultparameters. This is accomplished through information contained in thedisplayMsparamsDir ();idxlinks.txt file.A server administrator can customize these parametersby editing the displayMsparamsDir ();idxlinks.txt file.
The file usermod_xlink.txt is used to store crosslinking related modifications for use byMS-Product, MS-Viewer, MS-Tag, Batch-Tag, MS-Bridge, MS-Digest and MS-Fit. These modificationsare referenced by the file links.txt.
The file displayMsparamsDir ();links.txt contains the information requiredby the Links Search Type option of the MS-Bridge form and the Crosslinking section on theMS-Tag/Batch-Tag form. 781b155fdc