/src/perl/Metacat/Metacat.pm - Annotate - Metacat - Ecoinformatics Redmine

metacat/src/perl/Metacat/Metacat.pm @ 3667

             brooke
  #  '$RCSfile$'
  #  Copyright: 2000 Regents of the University of California
+ #
  #   '$Author$'
  #     '$Date$'
  # '$Revision$'
+ #
  # This program is free software; you can redistribute it and/or modify
  # it under the terms of the GNU General Public License as published by
  # the Free Software Foundation; either version 2 of the License, or
  # (at your option) any later version.
+ #
  # This program is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  # GNU General Public License for more details.
+ #
  # You should have received a copy of the GNU General Public License
  # along with this program; if not, write to the Free Software
  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ #
 package Metacat;
 require 5.005_62;
 use strict;
 use warnings;
 require Exporter;
 use AutoLoader qw(AUTOLOAD);
 use LWP::UserAgent;
-            walbridge
+use HTTP::Request::Common qw(POST);
-            brooke
+use HTTP::Cookies;
 our @ISA = qw(Exporter);
 # Items to export into callers namespace by default. Note: do not export
 # names by default without a very good reason. Use EXPORT_OK instead.
 # Do not simply export all your public functions/methods/constants.
 # This allows declaration	use Metacat ':all';
 # If you do not need this, moving things directly into @EXPORT or @EXPORT_OK
 # will save memory.
 our %EXPORT_TAGS = ( 'all' => [ qw(
 ) ] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
 our @EXPORT = qw(
 );
 our $VERSION = '0.01';
 # Preloaded methods go here.
 #############################################################
 # Constructor creates a new class instance and inits all
 # of the instance variables to their proper default values,
 # which can later be changed using "set_options"
 #############################################################
 sub new {
-            walbridge
+  my($type,$metacatUrl) = @_;
-            brooke
+  my $cookie_jar = HTTP::Cookies->new;
-            walbridge
+  my $self = {
     metacatUrl     => $metacatUrl,
-            brooke
+    message        => '',
     cookies        => \$cookie_jar
   };
-            walbridge
+  bless $self, $type;
   return $self;
             brooke
 #############################################################
 # subroutine to set options for the class, including the URL
 # for the Metacat database to which we would connect
 #############################################################
 sub set_options {
   my $self = shift;
   my %newargs = ( @_ );
   my $arg;
   foreach $arg (keys %newargs) {
     $self->{$arg} = $newargs{$arg};
+  }
+}
 #############################################################
 # subroutine to send data to metacat and get the response
 # return response from metacat
 #############################################################
 sub sendData {
   my $self = shift;
   my %postData = ( @_ );
-            jones
+  $self->{'message'} = '';
-            brooke
+  my $userAgent = new LWP::UserAgent;
   $userAgent->agent("MetacatClient/1.0");
             walbridge
   # determine encoding type
   my $contentType = 'application/x-www-form-urlencoded';
   if ($postData{'enctype'}) {
       $contentType = $postData{'enctype'};
       delete $postData{'enctype'};
+  }
   my $request = POST("$self->{'metacatUrl'}",
                      Content_Type => $contentType,
                      Content => \%postData
                 );
   # set cookies on UA object
-            brooke
+  my $cookie_jar = $self->{'cookies'};
   $$cookie_jar->add_cookie_header($request);
-            walbridge
+  #print "request: " . $request->as_string();
             brooke
   my $response = $userAgent->request($request);
-            walbridge
+  #print "response: " . $response->as_string();
-            brooke
+  if ($response->is_success) {
     # save the cookies
     $$cookie_jar->extract_cookies($response);
     # save the metacat response message
     $self->{'message'} = $response->content;
   } else {
     #print "SendData content is: ", $response->content, "\n";
     return 0;
+  }
   return $response;
+}
 #############################################################
 # subroutine to log into Metacat and save the cookie if the
-            sgarg
+# login is valid.  If not valid, return 0. If valid then send
 # following values to indicate user status
 # 1 - user
 # 2 - moderator
 # 3 - administrator
 # 4 - moderator and administrator
-            brooke
+#############################################################
 sub login {
   my $self = shift;
   my $username = shift;
   my $password = shift;
   my $returnval = 0;
   my %postData = ( action => 'login',
                    qformat => 'xml',
                    username => $username,
                    password => $password
                  );
   my $response = $self->sendData(%postData);
   if (($response) && $response->content =~ /<login>/) {
     $returnval = 1;
+  }
-            sgarg
+  if (($response) && $response->content =~ /<isAdministrator>/) {
 	if (($response) && $response->content =~ /<isModerator>/) {
     		$returnval = 4;
 	} else {
 		$returnval = 3;
+	}
   } elsif (($response) && $response->content =~ /<isModerator>/){
 	$returnval = 2;
+  }
-            brooke
+  return $returnval;
+}
 #############################################################
 # subroutine to insert an XML document into Metacat
 # If success, return 1, else return 0
 #############################################################
 sub insert {
   my $self = shift;
   my $docid = shift;
   my $xmldocument = shift;
   my $dtd = shift;
   my $returnval = 0;
   my %postData = ( action => 'insert',
                    docid => $docid,
                    doctext => $xmldocument
                  );
   if ($dtd) {
     $postData{'dtdtext'} = $dtd;
+  }
   my $response = $self->sendData(%postData);
   if (($response) && $response->content =~ /<success>/) {
     $returnval = 1;
   } elsif (($response)) {
     $returnval = 0;
     #print "Error response from sendData!\n";
     #print $response->content, "\n";
   } else {
     $returnval = 0;
     #print "Invalid response from sendData!\n";
+  }
   return $returnval;
+}
 #############################################################
 # subroutine to update an XML document in Metacat
 # If success, return 1, else return 0
 #############################################################
 sub update {
   my $self = shift;
   my $docid = shift;
   my $xmldocument = shift;
   my $dtd = shift;
   my $returnval = 0;
   my %postData = ( action => 'update',
                    docid => $docid,
                    doctext => $xmldocument
                  );
   if ($dtd) {
     $postData{'dtdtext'} = $dtd;
+  }
   my $response = $self->sendData(%postData);
   if (($response) && $response->content =~ /<success>/) {
     $returnval = 1;
+  }
   return $returnval;
+}
-            walbridge
+############################################################
 # subroutine to upload an XML document in Metacat
 # If success, return 1, else return 0
-            brooke
+#############################################################
-            walbridge
+sub upload {
   my $self = shift;
   my $docid = shift;
   my $datafile = shift;
   my $returnval = 0;
   my %postData = ( action => 'upload',
                    docid => $docid,
                    datafile => [$datafile],
                    enctype => 'form-data'
                  );
   my $response = $self->sendData(%postData);
   #print "response is: $response";
+  #
   if (($response) && $response->content =~ /<success>/) {
     $returnval = $response->content;
+  }
   return $returnval;
+}
 #############################################################
-            brooke
+# subroutine to delete an XML document in Metacat
 # If success, return 1, else return 0
 #############################################################
 sub delete {
   my $self = shift;
   my $docid = shift;
   my $returnval = 0;
   my %postData = ( action => 'delete',
                    docid => $docid
                  );
   my $response = $self->sendData(%postData);
   if (($response) && $response->content =~ /<success>/) {
     $returnval = 1;
+  }
   return $returnval;
+}
 #############################################################
-            sgarg
+# subroutine to set access for an XML document in Metacat
 # If success, return 1, else return 0
 #############################################################
 sub setaccess {
   my $self = shift;
   my $docid = shift;
   my $principal = shift;
   my $permission = shift;
   my $permType = shift;
   my $permOrder = shift;
   my $returnval = 0;
   my %postData = ( action => 'setaccess',
                    docid => $docid,
 		   principal => $principal,
 		   permission => $permission,
 		   permType => $permType,
 		   permOrder => $permOrder
                  );
   my $response = $self->sendData(%postData);
   if (($response) && $response->content =~ /<success>/) {
     $returnval = 1;
+  }
   return $returnval;
+}
 #############################################################
-            brooke
+# subroutine to read an XML document from Metacat
 # returns the XML from Metacat, which may be an error response
 #############################################################
 sub read {
   my $self = shift;
   my $docid = shift;
   my %postData = ( action => 'read',
                    qformat => 'xml',
                    docid => $docid
                  );
   my $response = $self->sendData(%postData);
   my $returnval = 0;
   if ($response) {
     $returnval = $response;
+  }
   return $returnval;
+}
 #############################################################
 # subroutine to query metacat using a structured path query
 # returns the XML from Metacat, which may be an error response
 #############################################################
 sub squery {
   my $self = shift;
   my $query = shift;
   my %postData = ( action => 'squery',
                    qformat => 'xml',
                    query => $query
                  );
   my $response = $self->sendData(%postData);
   my $returnval = 0;
   if ($response) {
     $returnval = $response;
+  }
   return $returnval;
+}
 #############################################################
-            jones
+# subroutine to get the maximimum id in a series
 # If success, return max id, else return 0
 #############################################################
 sub getLastId {
   my $self = shift;
   my $scope = shift;
   my $returnval = 0;
   my %postData = ( action => 'getlastdocid',
                    scope => $scope
                  );
   my $response = $self->sendData(%postData);
   if (($response) && $response->content =~ /<docid>(.*)<\/docid>/s) {
       $returnval = "$1";
   } elsif (($response)) {
     $returnval = 0;
     #print "Error response from sendData!\n";
     #print $response->content, "\n";
   } else {
     $returnval = 0;
     #print "Invalid response from sendData!\n";
+  }
   return $returnval;
+}
 #############################################################
-            brooke
+# subroutine to get the message returned from the last executed
 # metacat action.  These are generally XML formatted messages.
 #############################################################
 sub getMessage {
   my $self = shift;
   return $self->{'message'};
+}
 #############################################################
 # subroutine to get the cookies returned from the metacat
 # server to establish (and pass on) session info (JSESSIONID).
 #############################################################
 sub getCookies {
   my $self = shift;
   return $self->{'cookies'};
+}
 # Autoload methods go after =cut, and are processed by the autosplit program.
 ;
 __END__
 # Below is stub documentation for your module. You better edit it!
 =head1 NAME
 Metacat - Perl extension for communicating with the Metacat XML database
 =head1 SYNOPSIS
   use Metacat;
   my $metacat = Metacat->new();
   my $response = $metacat->login($username, $password);
   print $metacat->getMessage();
   $response = $metacat->insert($docid, $xmldoc);
   print $metacat->getMessage();
   $response = $metacat->insert($docid, $xmldoc, $dtd);
   print $metacat->getMessage();
   $response = $metacat->update($docid, $xmldoc);
   print $metacat->getMessage();
   $htmlResponse = $metacat->read($docid);
   $xmldoc = $htmlResponse->content();
   print $xmldoc;
   $resultset = $metacat->squery($pathquery);
   print $resultset;
   $response = $metacat->delete($docid);
-            sgarg
+  $response = $metacat->setaccess($docid,$principal,$permission,$permType,$permOrder);
-            jones
+  my $lastid = $metacat->getLastId("obfs");
-            brooke
+  print $metacat->getMessage();
   $response = $metacat->getCookies();
   print $metacat->getMessage();
 =head1 DESCRIPTION
 This is a client library for accessing the Metacat XML database.  Metacat
 is a Java servlet that accepts commands over HTTP and returns XML and
 HTML responses.  See http://knb.ecoinformatics.org for details about
 Metacat and its interface.
 =head2 EXPORT
 None by default.
 =head1 AUTHOR
 Matthew B. Jones, jones@nceas.ucsb.edu
 =head1 SEE ALSO
 perl(1).
 =cut

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