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Revision 2563

Added by harris over 19 years ago

Filed used my the Metacat Spatial Option. Generally these files represent
the portion of the spatial option that harvests spatial elements from a
Metacat, and stores the elements as a shapefile on the file system. This
option, at this point, is pretty much independent of the metacat application.
This system requires Mapserver, and is run as a cron job.

metacat_to_shapefile.sh -- script that is called by the cron job and uses the
following code to create a shapefile with the spatial elements in the respective
metacat:

get_eml.pl -- connects to metacat and gets the spatial location data as points.

metacat_shapefile -- linux binary to write the shapefile

View differences:

src/perl/get_eml.pl
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#!/usr/bin/perl
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# check that the correct number or parameters are issued
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if (($#ARGV +1) != 3) {die "Usage: %./get_eml.pl <metacat_url> <login> <passwd>\n\n";}
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($url, $username, $password) = @ARGV; #get the input file and output file names
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use Metacat;
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use XML::DOM;
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my $metacat = Metacat->new();
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#my $username = "uid=knb2003,o=NCEAS,dc=ecoinformatics,dc=org";
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#my $password = "afr1ca";
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#my $url = "http://indus.nceas.ucsb.edu/knb-test/metacat";
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#my $url = "http://metacat.nceas.ucsb.edu/knb/servlet/metacat";
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#my $url = "http://dhcp84.nceas.ucsb.edu:8080/knp/servlet/metacat";
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#my $url = $infile
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if ($metacat) {
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    $metacat->set_options( metacatUrl => $url );
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} else {
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#print "Failed during metacat creation.";
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    $error = 1;
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    exit();
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}
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# Login to metacat
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# //print "Logging in to metacat..........\n";
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my $response1 = $metacat->login($username, $password);
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if (! $response1) {
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#    //print $metacat->getMessage();
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#    //print "Failed during login: metacat.\n";
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    $error = 2;
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} else {
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#    //print "Logged in.\n";
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}
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my $query = "<?xml version=\"1.0\" ?> <pathquery version=\"1.2\">  <querytitle>Untitled-Search-2</querytitle>  <returndoctype>-//ecoinformatics.org//eml-dataset-2.0.0beta6//EN</returndoctype> <returndoctype>-//NCEAS//eml-dataset-2.0//EN</returndoctype>  <returndoctype>eml://ecoinformatics.org/eml-2.0.0</returndoctype>  <returnfield>dataset/title</returnfield>  <returnfield>individualName/surName</returnfield> <returnfield>keyword</returnfield><returnfield>westBoundingCoordinate</returnfield><returnfield>eastBoundingCoordinate</returnfield><returnfield>northBoundingCoordinate</returnfield><returnfield>southBoundingCoordinate</returnfield><returnfield>westbc</returnfield><returnfield>eastbc</returnfield><returnfield>northbc</returnfield><returnfield>southbc</returnfield><querygroup operator=\"INTERSECT\"><querygroup operator=\"UNION\"><querygroup operator=\"UNION\"><queryterm searchmode=\"contains\" casesensitive=\"false\"><value>%25</value></queryterm></querygroup></querygroup></querygroup></pathquery>";
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my $response = $metacat->squery($query);
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my $mesg =$metacat->getMessage();
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#print "\n\ngetting the message ... \n";
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#print $mesg;
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if($mesg eq ""){
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#    print ("Too much time is reply back from metacat...");
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    exit();
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}
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my $parser = new XML::DOM::Parser;
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my $node;
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my $name;
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my $doc = $parser->parse($mesg);
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my $nodes = $doc->getElementsByTagName("docid");
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$numberNodes = $nodes->getLength;
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for (my $loop_index =0; $loop_index < $numberNodes; $loop_index++)
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{
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    $node = $nodes->item($loop_index);
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    $name = $node->getFirstChild()->getNodeValue();
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    $node = $node->getParentNode(); 
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    my $tempnodes = $node->getElementsByTagName("param");
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    my $tempnumberNodes = $tempnodes->getLength;
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    my $title = "";
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    my $keyword = "";
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    my $cName = "";
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    my $eBC = "";
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    my $wBC = "";
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    my $nBC = "";
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    my $sBC = "";
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 for (my $loop =0; $loop < $tempnumberNodes; $loop++) 
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 {
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	my $tempnode = $tempnodes->item($loop);	
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	my $paramname = $tempnode->getAttributeNode("name")->getValue();
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	if($paramname eq "dataset/title"){
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	    $title = $tempnode->getFirstChild()->getNodeValue();
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	}
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	if($paramname eq "keyword"){
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	    $keyword = $keyword.",".$tempnode->getFirstChild()->getNodeValue();
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	}
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	if($paramname eq "individualName/surName"){
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	    $cName = $cName.",".$tempnode->getFirstChild()->getNodeValue();
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	}
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	if($paramname eq "eastBoundingCoordinate"){
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	    $eBC = $tempnode->getFirstChild()->getNodeValue();
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	}
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	if($paramname eq "eastbc"){
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	    $eBC = $tempnode->getFirstChild()->getNodeValue();
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	}
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	if($paramname eq "westBoundingCoordinate"){
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	    $wBC = $tempnode->getFirstChild()->getNodeValue();
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	}
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	if($paramname eq "westbc"){
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	    $wBC = $tempnode->getFirstChild()->getNodeValue();
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	}
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	if($paramname eq "northBoundingCoordinate"){
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	    $nBC = $tempnode->getFirstChild()->getNodeValue();
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	}
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	if($paramname eq "northbc"){
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	    $nBC = $tempnode->getFirstChild()->getNodeValue();
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	}
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	if($paramname eq "southBoundingCoordinate"){
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	    $sBC = $tempnode->getFirstChild()->getNodeValue();
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	}
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	if($paramname eq "southbc"){
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	    $sBC = $tempnode->getFirstChild()->getNodeValue();
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	}
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    }
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    if($keyword ne "" ){
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	$keyword = substr ($keyword, 1);
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    }
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    if($cName ne "" ){
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	$cName = substr ($cName, 1);
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    }
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  #  print "$name, $title, ($cName), ($keyword), ($eBC,$wBC,$nBC,$sBC), $url?action=read&docid=$name&qformat=knb, \n";
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 if ($eBC ne "" && $nBC ne "" && $eBC ne "0" &&  $nBC ne "0") { 
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    print "$name $eBC $nBC $url?action=read&docid=$name&qformat=knb \n";
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 }
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}
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#print $numberNodes;
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bin/metacat_to_shapefile.sh
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#!/bin/sh -e 
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###############################################################################
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#    '$RCSfile$'
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#      Authors: Matt Jones, Chad Berkley, Jivka Bojilova
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#    Copyright: 2000 Regents of the University of California and the
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#               National Center for Ecological Analysis and Synthesis
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#  For Details: http://www.nceas.ucsb.edu/
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# 
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#     '$Author$'
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#     '$Date$'
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#     '$Revision$'
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# 
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#  Build file for the Ant cross-platform build system for metacat
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#  See http://jakarta.apache.org for details on Ant
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# 
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#  usage: ant [compile|jar|install|jdoc]
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# 
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#  This program is free software; you can redistribute it and/or modify
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#  it under the terms of the GNU General Public License as published by
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#  the Free Software Foundation; either version 2 of the License, or
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#  (at your option) any later version.
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# 
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#  This program is distributed in the hope that it will be useful,
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#  but WITHOUT ANY WARRANTY; without even the implied warranty of
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#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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#  GNU General Public License for more details.
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# 
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#  You should have received a copy of the GNU General Public License
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#  along with this program; if not, write to the Free Software
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#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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###############################################################################
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## script to create a shapefile from metacat, and to be run nightly as a cronjob
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################### JUDITHS'S SETTINGS #########################################
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#METACAT_URL=http://metacat.nceas.ucsb.edu/knb/servlet/metacat
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METACAT_URL=http://127.0.0.1:8080/knp/servlet/metacat
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METACAT_LOGIN=yeah
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METACAT_PASSWD=right
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TMP_DIR=/tmp
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METACAT_SHAPEFILE_RESOURCES=/usr/local/devtools/shapefile/metacat/
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#METACAT_SHAPEFILE_RESOURCES=/home/harris/development/private/src/cpp/shapefile/metacat/
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PERL_BIN=/usr/bin/perl
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POINTS_GEOCOORD=metacat_points_geocoord.txt
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POINTS_UTM=metacat_points_utm.txt
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SHAPEFILE_GEOCOORD=metacat_points_geocoord
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SHAPEFILE_UTM=metacat_points_utm
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#DIST_DIR=/home/harris/development/private/src/cpp/shapefile/metacat/data
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DIST_DIR=/var/www/html/mapserver/kruger/data/
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#############################################################################
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################### JOHN'S SETTINGS #########################################
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#METACAT_URL=http://dhcp84.nceas.ucsb.edu:8080/knp/servlet/metacat
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###METACAT_URL=http://metacat.nceas.ucsb.edu/knb/servlet/metacat
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#TMP_DIR=/tmp
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#METACAT_SHAPEFILE_RESOURCES=/home/harris/development/private/src/cpp/shapefile/metacat/
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#PERL_BIN=/usr/bin/perl
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#POINTS_GEOCOORD=metacat_points_geocoord.txt
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#POINTS_UTM=metacat_points_utm.txt
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#SHAPEFILE_GEOCOORD=metacat_points_geocoord
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#SHAPEFILE_UTM=metacat_points_utm
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#DIST_DIR=/home/harris/development/private/src/cpp/shapefile/metacat/data
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#############################################################################
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## 1] get the counding coordinates from metacat
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$METACAT_SHAPEFILE_RESOURCES/get_eml.pl $METACAT_URL $METACAT_LOGIN $METACAT_PASSWD > $TMP_DIR/$POINTS_GEOCOORD
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echo "THE DATA RETRIEVED FROM METACAT START ON THE FOLLOWING LINE"
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echo "THE DATA RETRIEVED FROM METACAT START ON THE FOLLOWING LINE"
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echo "THE DATA RETRIEVED FROM METACAT START ON THE FOLLOWING LINE"
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echo "THE DATA RETRIEVED FROM METACAT START ON THE FOLLOWING LINE"
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cat $TMP_DIR/$POINTS_GEOCOORD
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echo "THE DATA RETRIEVED FROM METACAT START ON THE FOLLOWING LINE"
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echo "THE DATA RETRIEVED FROM METACAT START ON THE FOLLOWING LINE"
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echo "THE DATA RETRIEVED FROM METACAT START ON THE FOLLOWING LINE"
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echo "THE DATA RETRIEVED FROM METACAT START ON THE FOLLOWING LINE"
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## 2] create the shapefile [this will be in geocoordinates]
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$METACAT_SHAPEFILE_RESOURCES/metacat_shapefile  $TMP_DIR/$POINTS_GEOCOORD  $TMP_DIR/$SHAPEFILE_GEOCOORD
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## 3] convert the data to utm
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# delete the file if it exists
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if test -f $TMP_DIR/$POINTS_UTM; then
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  rm $TMP_DIR/$POINTS_UTM
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fi
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cat $TMP_DIR/$POINTS_GEOCOORD | while read line
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do
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  ID=`echo $line | awk '{print $1}'`
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  LAT=`echo $line | awk '{print $3}'`
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  LONG=`echo $line | awk '{print $2}'`
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  URL=`echo $line | awk '{print $4}'`
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  ## the utm x,y's are switched here 
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  UTM=`$METACAT_SHAPEFILE_RESOURCES/coords/ll2utm  $LAT $LONG | awk '{print $1, $2}'`
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  Y=`echo $UTM | awk '{print $1}'`
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  X=`echo $UTM | awk '{print $2}'`
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  if test ! -d $X; then
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   echo $ID $X $Y $URL >> $TMP_DIR/$POINTS_UTM
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  fi
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done
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## 4] make a second shapefile -- this time in utm
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$METACAT_SHAPEFILE_RESOURCES/metacat_shapefile $TMP_DIR/$POINTS_UTM $TMP_DIR/$SHAPEFILE_UTM
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## 5] distribute the shapefiles 
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cp $TMP_DIR/$SHAPEFILE_GEOCOORD* $DIST_DIR
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cp $TMP_DIR/$SHAPEFILE_UTM* $DIST_DIR
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## clean up
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rm core*
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