Gecko [ porsche-kaitori.click ]

Name	Size	Permission
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Any	[ DIR ]	drwxr-xr-x
AnyEvent	[ DIR ]	drwxr-xr-x
Apache	[ DIR ]	drwxr-xr-x
Apache2	[ DIR ]	drwxr-xr-x
App	[ DIR ]	drwxr-xr-x
AppConfig	[ DIR ]	drwxr-xr-x
Archive	[ DIR ]	drwxr-xr-x
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Boulder	[ DIR ]	drwxr-xr-x
Browser	[ DIR ]	drwxr-xr-x
Bundle	[ DIR ]	drwxr-xr-x
Business	[ DIR ]	drwxr-xr-x
Bytes	[ DIR ]	drwxr-xr-x
CGI	[ DIR ]	drwxr-xr-x
CHI	[ DIR ]	drwxr-xr-x
CPAN	[ DIR ]	drwxr-xr-x
CPANPLUS	[ DIR ]	drwxr-xr-x
CSS	[ DIR ]	drwxr-xr-x
Cache	[ DIR ]	drwxr-xr-x
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Database	[ DIR ]	drwxr-xr-x
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Dist	[ DIR ]	drwxr-xr-x
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Email	[ DIR ]	drwxr-xr-x
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Excel	[ DIR ]	drwxr-xr-x
Exception	[ DIR ]	drwxr-xr-x
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ExtUtils	[ DIR ]	drwxr-xr-x
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Feed	[ DIR ]	drwxr-xr-x
Fennec	[ DIR ]	drwxr-xr-x
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JavaScript	[ DIR ]	drwxr-xr-x
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Spreadsheet	[ DIR ]	drwxr-xr-x
StackTrace	[ DIR ]	drwxr-xr-x
Statistics	[ DIR ]	drwxr-xr-x
Stone	[ DIR ]	drwxr-xr-x
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Sub	[ DIR ]	drwxr-xr-x
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TAP	[ DIR ]	drwxr-xr-x
Tangerine	[ DIR ]	drwxr-xr-x
Task	[ DIR ]	drwxr-xr-x
TeX	[ DIR ]	drwxr-xr-x
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Term	[ DIR ]	drwxr-xr-x
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Test2	[ DIR ]	drwxr-xr-x
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Try	[ DIR ]	drwxr-xr-x
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UNIVERSAL	[ DIR ]	drwxr-xr-x
URI	[ DIR ]	drwxr-xr-x
Unicode	[ DIR ]	drwxr-xr-x
User	[ DIR ]	drwxr-xr-x
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XBase	[ DIR ]	drwxr-xr-x
XML	[ DIR ]	drwxr-xr-x
XMLRPC	[ DIR ]	drwxr-xr-x
YAML	[ DIR ]	drwxr-xr-x
ZMQ	[ DIR ]	drwxr-xr-x
auto	[ DIR ]	drwxr-xr-x
autobox	[ DIR ]	drwxr-xr-x
autodie	[ DIR ]	drwxr-xr-x
common	[ DIR ]	drwxr-xr-x
constant	[ DIR ]	drwxr-xr-x
inc	[ DIR ]	drwxr-xr-x
lib	[ DIR ]	drwxr-xr-x
local	[ DIR ]	drwxr-xr-x
namespace	[ DIR ]	drwxr-xr-x
odern	[ DIR ]	drwxr-xr-x
perl5i	[ DIR ]	drwxr-xr-x
utf8	[ DIR ]	drwxr-xr-x
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BER.pm	27.14 KB	-rw-r--r--
Boulder.pod	6.23 KB	-rw-r--r--
CGI.pm	255.24 KB	-rw-r--r--
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Fatal.pm	45.16 KB	-rw-r--r--
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ReadMe.pod	3.33 KB	-rw-r--r--
Readonly.pm	21.94 KB	-rw-r--r--
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Stone.pm	30.88 KB	-rw-r--r--
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aliased.pm	9.39 KB	-rw-r--r--
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assert.pl	1.27 KB	-rw-r--r--
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find.pl	1.16 KB	-rw-r--r--
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Name

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Action

Algorithm

[ DIR ]

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Alien

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Any

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drwxr-xr-x

AnyEvent

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Apache

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Apache2

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App

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AppConfig

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Code Editor : Boulder.pod

=head1 NAME

Boulder - An API for hierarchical tag/value structures

=head1 SYNOPSIS

# Read a series of People records from STDIN.
   # Add an "Eligibility" attribute to all those whose
   # Age >= 35 and Friends list includes "Fred"
   
   use Boulder::Stream;
   
   my $stream = Boulder::Stream->newFh;
   
   while ( my $record = <$stream> ) {
      next unless $record->Age >= 35;
      my @friends = $record->Friends;
      next unless grep {$_ eq 'Fred'} @friends;

$record->insert(Eligibility => 'yes');
      print $stream $record;
    }

Related manual pages:

basics
  ------
  Stone            hierarchical tag/value records
  Stone::Cursor    Traverse a hierarchy

Boulder::Stream  stream-oriented storage for Stones
  Boulder::Store   record-oriented storage for Stones
  Boulder::XML     XML conversion for Stones
  Boulder::String  conversion to strings

genome-related
  ---------------

Boulder::Genbank   parse Genbank (DNA sequence) records
  Boulder::Blast     parse BLAST (basic local alignment search tool) reports
  Boulder::Medline   parse Medline (pubmed) records
  Boulder::Omim      parse OMIM (online Mendelian inheritance in man) records
  Boulder::Swissprot parse Swissprot records
  Boulder::Unigene   parse Unigene records

=head1 DESCRIPTION

=head2 Boulder IO

Boulder IO is a simple TAG=VALUE data format designed for sharing data
between programs connected via a pipe.  It is also simple enough to use
as a common data exchange format between databases, Web pages, and other
data representations.

The basic data format is very simple.  It consists of a series of TAG=VALUE
pairs separated by newlines.  It is record-oriented.  The end of a record is
indicated by an empty delimiter alone on a line.  The delimiter is "=" by
default, but can be adjusted by the user.

An example boulder stream looks like this:

Name=Lincoln Stein
	Home=/u/bush202/lds32
	Organization=Cold Spring Harbor Laboratory
	Login=lds32
	Password_age=20
	Password_expires=60
        Alias=lstein
        Alias=steinl
	=
	Name=Leigh Deacon
	Home=/u/bush202/tanager
	Organization=Cold Spring Harbor Laboratory
	Login=tanager
	Password_age=2
	Password_expires=60
	=

Notes:

=over 4

=item (1)

There is no need for all tags to appear in all records, or
indeed for all the records to be homogeneous.

=item (2)

Multiple values are allowed, as with the Alias tag in the second
record.

=item (3)

Lines can be any length, as in a potential 40 Kbp DNA sequence entry.

=item (4)

Tags can be any alphanumeric character (upper or lower case) and may
contain embedded spaces.  Conventionally we use the characters
A-Z0-9_, because they can be used without single quoting as keys in
Perl associative arrays, but this is merely stylistic.  Values can be
any character at all except for the reserved characters {}=% and
newline.  You can incorporate binary data into the data stream by
escaping these characters in the URL manner, using a % sign followed
by the (capitalized) hexadecimal code for the character.  The module
makes this automatic.

=back

=head2 Hierarchical Records

The simple boulder format can be extended to accomodate nested
relations and other intresting structures.  Nested records can be
created in this way:

Name=Lincoln Stein
 Home=/u/bush202/lds32
 Organization=Cold Spring Harbor Laboratory
 Login=lds32
 Password_age=20
 Password_expires=60
 Privileges={
   ChangePasswd=yes
   CronJobs=yes
   Reboot=yes
   Shutdown=no
 }
 =
 Name=Leigh Deacon
 Home=/u/bush202/tanager
 Organization=Cold Spring Harbor Laboratory
 Login=tanager
 Password_age=2
 Password_expires=60
 Privileges={
   ChangePasswd=yes
   CronJobs=no
   Reboot=no
   Shutdown=no
 }
 =

As in the original format, tags may be multivalued.  For example,
there might be several Privilege record assigned to a login account.
Each subrecord may contain further subrecords.

Within the program, a hierarchical record is encapsulated within a
"Stone", an opaque structure that implements methods for fetching and
settings its various tags.

=head2 Using Boulder for I/O

The Boulder API was designed to make reading and writing of complex
hierarchical records almost as easy as reading and writing single
lines of text.

=over 4

=item Boulder::Stream

The main component of the Boulder modules is Boulder::Stream, which
provides a stream-oriented view of the data.  You can read and write
to Boulder::Streams via tied filehandles, or via method calls.  Data
records are flattened into a simple format called "boulderio" format.

=item Boulder::XML

Boulder::XML acts like Boulder::Stream, but the serialization format
is XML.  You need XML::Parser installed to use this module.

=item Boulder::Store

This is a simple persistent storage class which allows you to store
several (thousand) Stone's into a DB_File database.  You must have
libdb and the Perl DB_File extensions installed in order to take
advantage of this class.

=item Boulder::Genbank

=item Boulder::Unigene

=item Boulder::OMIM

=item Boulder::Blast

=item Boulder::Medline

=item Boulder::SwissProt

These are parsers and accessors for various biological data sources.
They act like Boulder::Stream, but return a set of Stone objects that
have certain prescribed tags and values.  Many of these modules were
written by Luca I.G. Toldo <luca.toldo@merck.de>.

=back

=head2 Stone Objects

The Stone object encapsulates a set of tags and values.  Any tag can
be single- or multivalued, and tags are allowed to contain subtags to
any depth.  A simple set of methods named tags(), get(), put(),
insert(), replace() and so forth, allows you to examine the tags that
are available, get and set their values, and search for particular
tags.  In addition, an autoload mechanism allows you to use method
calls to access tags, for example:

my @friends = $record->Friends;

is equivalent to:

my @friends = $record->get('Friends');

A Stone::Cursor class allows you to traverse Stones systematically.

A full explanation of the Stone class can be found in its manual page.

=head1 AUTHOR

Lincoln D. Stein <lstein@cshl.org>, Cold Spring Harbor Laboratory,
Cold Spring Harbor, NY.  This module can be used and distributed on
the same terms as Perl itself.

=head1 SEE ALSO

L<Boulder::Blast>, L<Boulder::Genbank>, L<Boulder::Medline>, L<Boulder::Unigene>,
L<Boulder::Omim>, L<Boulder::SwissProt>

=cut

${this.title}

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