---
name: "Boulder::Omim"
section: "3"
platform: "linux"
package: "libboulder-perl"
version: "1.30-1"
release: "Debian 3.1 (Sarge)"
platforms: ["linux"]
url: "https://new.carta.tech/Boulder::Omim"
---

# Boulder::Omim(3)

Boulder::Omim - Fetch Omim data records as parsed Boulder Stones

```
  # parse a file of Omim records
  $om = new Boulder::Omim(-accessor=>'File',
                             -param => '/data/omim/omim.txt');
  while (my $s = $om->get) {
    print $s->Identifier;
    print $s->Text;
  }
```

```
  # parse flatfile records yourself
  open (OM,"/data/omim/omim.txt");
  local $/ = "*RECORD*";
  while (<OM>) {
     my $s = Boulder::Omim->parse($_);
     # etc.
  }
```

Boulder::Omim provides retrieval and parsing services for OMIM records Boulder::Omim provides retrieval and parsing services for NCBI Omim records.  It returns Omim entries in Stone format, allowing easy access to the various fields and values. Boulder::Omim is a descendent of Boulder::Stream, and provides a stream-like interface to a series of Stone objects. Access to Omim is provided by one *accessors*, which give access to  local Omim database.  When you create a new Boulder::Omim stream, you provide the accessors, along with accessor-specific parameters that control what entries to fetch.  The accessors is: This provides access to local Omim entries by reading from a flat file (typically omim.txt file downloadable from NCBI's Ftp site). The stream will return a Stone corresponding to each of the entries in  the file, starting from the top of the file and working downward.  The  parameter is the path to the local file. It is also possible to parse a single Omim entry from a text string  stored in a scalar variable, returning a Stone object.\
 **Boulder::Omim methods** This section lists the public methods that the *Boulder::Omim* class makes available.

```
   # Local fetch via File
   $om=new Boulder::Omim(-accessor  =>  'File',
                            -param     =>  '/data/omim/omim.txt');
```

The *new()* method creates a new *Boulder::Omim* stream on the accessor provided.  The only possible accessors is **File**.   If successful, the method returns the stream object.  Otherwise it returns undef.

*new()* takes the following arguments:

```
        -accessor       Name of the accessor to use
        -param          Parameters to pass to the accessor
```

Specify the accessor to use with the **-accessor** argument.  If not specified, it defaults to **File**.

**-param** is an accessor-specific argument.  The possibilities is:

For **File**, the **-param** argument must point to a string-valued scalar, which will be interpreted as the path to the file to read Omim entries from. The *get()* method is inherited from *Boulder::Stream*, and simply returns the next parsed Omim Stone, or undef if there is nothing more to fetch.  It has the same semantics as the parent class, including the ability to restrict access to certain top-level tags. The *put()* method is inherited from the parent Boulder::Stream class, and will write the passed Stone to standard output in Boulder format. This means that it is currently not possible to write a Boulder::Omim object back into Omim flatfile form. The tags returned by the parsing operation are taken from the names shown in the network Entrez interface to Omim.\
 **Top-Level Tags** These are tags that appear at the top level of the parsed Omim entry. The Omim identifier of this entry.  Identifier is a single-value tag.

Example:

```
      my $identifierNo = $s->Identifier;
```

The Omim title for this entry.

Example:\
       my `$titledef`=$s-\>Title; Example:\
       my `$thetext`=$s-\>Text; Example:\
       my `$themini`=$s-\>Mini; Example:\
       my `$thereviews`=$s-\>Reviews; Example:\
       my `$theCreation`=$s-\>CreationDate; Example:\
       my `@theContributors`=$s-\>Contributors; Example:\
       my `@theHistory`=$s-\>History; Boulder, Boulder::Blast, Boulder::Genbank Lincoln Stein \<lstein@cshl.org\>. Luca I.G. Toldo \<luca.toldo@merck.de\> Copyright (c) 1997 Lincoln D. Stein Copyright (c) 1999 Luca I.G. Toldo This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.  See DISCLAIMER.txt for disclaimers of warranty.