Perl : ignore columns from csv file during insert - oracle

I'm inserting a CSV file into TAB,
Is there any way I can ignore 2nd and 3rd column from the CSV file during insert?
I tried changing $row[] values to $row[0],$row[3],$row[4],$row[5],$row[6] but this doesn't work. Tried few more things and also search inside SO but couldn't find what I'm looking for.
could somebody suggest or point me to link?
use warnings;
use strict;
use Text::CSV;
use DBD::Oracle;
my $exitStatus = 0;
dbConnect();
&insertRecords
#----------------
sub insertRecords {
my $csv;
my $fileToInsert = shift;
my $row;
my $SQL1;
my $sth;
my $rc;
open my $fh, "<", $fileToInsert or die "$filetoInsert: $!"
$SQL1 = "Insert into TAB1 (sample_date, server, first, n1, n2)
values (?,?,?,?,?)";
$sth = prepare($SQL1)
while ($row = $csv->getline ($fh)) {
$sth -> execute($row[0], $row[1], $row[2], $row[3], $row[4])
}
CSV File:
sample_date,
date_x1
x2
server
first
n1
n2

You need to first read the whole file ,then run the query.
Right now the query is run on every line. But you have each entry one a line - not per column as you write - so you might not need the CSV module? Anyway, there are several errors in there. I've simplified it a little.
try something like this:
use warnings;
use strict;
use DBD::Oracle;
my $exitStatus = 0;
dbConnect();
my $file = shift;
&insertRecords($file);
#----------------
sub insertRecords {
my $fileToInsert = shift;
my $fh;
open $fh, "<", $fileToInsert or die "$fileToInsert: $!";
my $SQL1 = "Insert into TAB1 (sample_date, server, first, n1, n2) values (?,?,?,?,?)";
my $sth = prepare($SQL1);
my #row = $fh->getlines;
print ($row[0], $row[3], $row[4], $row[5], $row[6]); # <-- always good for testing!
$sth -> execute($row[0], $row[3], $row[4], $row[5], $row[6]);
}

Related

Perl - to create and sort hash to produce a sorted output

So I have this script that scrape data to a website, its getting and downloading a CSV and its process the CSV row by row and converts it into TSV, once that finished the TSV file will be converted into a HTML file. I'm done the rest of that but the output that I'm getting is some what messed up, the script goes to different table pages on the source site and downloads a dynamically generated CSV file; that CSV file is then turned into a TSV file that we then turn into HTML. The CSV file seems to be sorted by the first column for each row that is returned but not based on any of the other columns in the same row. Therefore what is happening is that entries with the same first column values can be jumbled up from one download to the next download of the same file.
A visual representation of only sorting by the first column this follows with numbers representing column data:
1st Download:
1-1
1-2
1-3
2-1
2-2
2-3
3-1
3-2
3-3
2nd Download:
1-1
1-3
1-2
2-2
2-1
2-3
3-3
3-2
3-1
So what I have in mind is the process will be like this, download the CSV file from the source and then perform a sort on the lines in that CSV file to normalize them for comparison to one another before writing the TSV or HTML files. This should allow for accurate comparison for updated data files. but I didn't know how to do this my logic is like this
So I will put the function between the 1. and 2. before it process the CSV file into TSV File I want the content of the CSV is already sorted.
So my script is looking like this
my $download_dir_link ="C:/Users/jabella/Downloads";
unlink("$download_dir_link/Product Classification List.csv");
#CHECK IF CSV FILE DOWNLOAD IS FINISHED
my $complete_download_flag = 0;
while($complete_download_flag == 0)
{
my #download_directory = read_dir($download_dir_link);
foreach my $downloaded_file (#download_directory)
{
if($downloaded_file =~ /\QProduct Classification List.csv\E/sgi)
{
$complete_download_flag = 1;
}
}
sleep(5);
}
#SORTED CONTENTS OF CSV BEFORE CONVERSION
print "sORTING csv content...\n";
#CONVERT CSV TO TSV
print "Converting csv to tsv...\n";
my $csv = Text::CSV->new ({ binary => 1 });
my $tsv = Text::CSV->new ({ binary => 1, sep_char => "\t", eol => "\n"});
open my $infh, "<:encoding(utf8)", "$download_dir_link/Product Classification List.csv";
open my $outfh, ">:encoding(utf8)", "Product Classification List.tsv";
while (my $row = $csv->getline ($infh))
{
$tsv->print ($outfh, $row);
}
close($infh);
close($outfh);
my $tsv_content = "";
open(my $fh, '<', "Product Classification List.tsv");
while (<$fh>)
{
$tsv_content = $tsv_content.$_;
}
close($fh);
print "Conversion complete! cleaning tsv content...\n";
#CLEAN TSV CONTENT
$tsv_content =~ s/(.*?)\t"(.*?)"\t"(.*?)"\t"(.*?)"\t(.*?)\t"(.*?)"\t(.*)/<tr><th>$1<\/th><th>$2<\/th><th>$3<\/th><th>$4<\/th><th>$5<\/th><th>$6<\/th><th>$7<\/th><\/tr>/gi;
$tsv_content =~ s/"?(.*?)"?\t"?(.*?)"?\t"?(.*?)"?\t"?(.*?)"?\t"?(.*?)"?\t"?(.*?)"?\t"?(.*?)"?\n/<tr><td>$1<\/td><td>$2<\/td><td>$3<\/td><td>$4<\/td><td>$5<\/td><td>$6<\/td><td>$7<\/td><\/tr>\n/gi;
$tsv_content =~ s/\"{2}/\"/sgi;
$tsv_content =~ s/(<\/tr>)\n?"/$1/sgi;
$tsv_content =~ s/\s{2,}/ /sgi;
$tsv_content =~ s/.*?(<tr>)/$1/si;
$tsv_content = "<table>\n$tsv_content</table>";
$classification =~ s/_//sgi;
if(exists $existing_index_hash{$doc_uid."_pind.html"})
{
if($existing_index_hash{$doc_uid."_pind.html"} ne $tsv_content)
{
$changed_flag = "1";
$updated_files = $updated_files."-$classification\n";
print "Updated: $classification\n";
Hope someone here can help me on this thank you
Here is a simple script that loads a CSV file specified as an argument and outputs it sorted by the first two columns.
#!/usr/bin/perl
use warnings;
use strict;
use Text::CSV_XS;
my $csv = 'Text::CSV_XS'->new({binary => 1, auto_diag => 1});
open my $in, '<', shift or die $!;
my #rows;
while (my $row = $csv->getline($in)) {
push #rows, $row;
}
# Here the sorting happens. Compare the first column,
# if the values are the same, compare the second column.
#rows = sort { $a->[0] cmp $b->[0] || $a->[1] cmp $b->[1] } #rows;
$csv->say(*STDOUT, $_) for #rows;
You can use the following to sort by all columns (but it compares the values as strings, it doesn't work for numbers):
sub by_all {
my ($n, $A, $B) = #_;
$A->[$n] cmp $B->[$n]
|| $n < $#$A && by_all($n + 1, $A, $B)
}
sort { by_all(0, $a, $b) } #rows;
To make it work for numbers, too, you can let Perl guess what is a number:
use Scalar::Util qw{ looks_like_number };
sub by_all {
my ($n, $A, $B) = #_;
(looks_like_number($A->[$n])
? $A->[$n] <=> $B->[$n]
: $A->[$n] cmp $B->[$n]
) || $n < $#$A && by_all($n + 1, $A, $B)
}

Adding a new position at the end of the file Shell or Perl

My question is how to add a new position at the end of the file in Shell or Perl?
I have two files:
File A with 536382 lines and the key is third column:
abc1111,1070X00Y0,**9999**,B
abc2222,1070X00Y0,**9999**,B
abc3333,1070x00Y0,**9999**,B
File B with 946 lines and the key is the first column:
**9999**,Position,West
**9998**,Position,West
**9997**,Position,South
**1111**,Position,South
**9999**,Time,Morning
**9997**,Time,Afternoon
I want a combination of these two files:
abc1111,1070X00Y0,9999,B,West,Morning
abc2222,1070X00Y0,9999,B,West,Morning
abc3333,1070x00Y0,9999,B,West,Morning
I was trying shell script but I was receiving a message of out of memory.
So I open for suggestions.
Thank you, so far.
I was able to get the results you want by making a few changes to your code.
#!/usr/bin/perl
use strict;
use warnings;
open IN2, '<', \<<EOF;
**9999**,Position,West
**9998**,Position,West
**9997**,Position,South
**1111**,Position,South
**9999**,Time,Morning
**9997**,Time,Afternoon
EOF
my %hash;
while ( <IN2> ) {
chomp;
my #col2 = split ",";
$hash{$col2[0]}{$col2[1]} = $col2[2];
}
open IN1, '<', \<<EOF;
abc1111,1070X00Y0,**9999**,B
abc2222,1070X00Y0,**9999**,B
abc3333,1070x00Y0,**9999**,B
EOF
while ( <IN1> ) {
chomp;
my $key = (split /,/)[2];
if ( exists( $hash{$key} ) ) {
print join(",", $_, #{ $hash{$key} }{ qw/Position Time/ }), "\n";
}
}
This produced output of:
abc1111,1070X00Y0,**9999**,B,West,Morning
abc2222,1070X00Y0,**9999**,B,West,Morning
abc3333,1070x00Y0,**9999**,B,West,Morning
The changes to the code were
$hash{$col2[0]}{$col2[1]} = $col2[2]; Create a Hash of Hash to hold the Position and Time keys. They are used in a hash slice here
#{ $hash{$key} }{ qw/Position Time/ })
Convert small file into perl's hash
Process big file line by line

Windows - Using perl monitor a directory for a new file drop/creation

Looking for a way to monitor a directory for a new file creation or a drop.
so if I have a folder c:\temp and if an abc.txt is copied/created in this I want an event or something so that I can pick up that file and then process it.
Also, I want continuous monitoring of this folder. How can I do that. I am writing a service which does all this. I want to incorporate monitoring and processing in one script.
Thanks in advance.
The answer is here: In Perl, how can I watch a directory for changes?
For Linux:
use File::ChangeNotify;
my $watcher = File::ChangeNotify->instantiate_watcher(
directories => [ 'archive/oswiostat' ],
filter => qr/\Aoracleapps[.].*dat\z/,
);
while (my #events = $watcher->wait_for_events) {
# ...
}
I think you are using Windows so you have to use Win32::ChangeNotify
example from: http://www.perlmonks.org/?node_id=306175
use strict;
use Win32::ChangeNotify;
our $PATH ||= '.';
our $S = defined $S ? 1 : 0;
my $notify = Win32::ChangeNotify->new( $PATH, $S, 'FILE_NAME' );
my %last; #last{ glob $PATH . '/*' } = ();
while( 1 ) {
print('Nothing changed'), next
unless $notify->wait( 10_000 ); # Check every 10 seconds
$notify->reset;
print 'Something changed';
my #files = glob $PATH . '/*';
if( #files < scalar keys %last ) {
delete #last{ #files };
print 'These files where deleted: ';
print for keys %last;
}
elsif( #files > scalar keys %last ) {
my %temp;
#temp{ #files } = ();
delete #temp{ keys %last };
print 'These files where created: ';
print for keys %temp;
}
else {
print "A non-deletion or creation change occured";
}
undef %last;
#last{ #files } = ();
}

Get contents between table tags in everyfile in directory output to one file

I have directory with about 900 html documents in it, each document contains the same table tags (easily defined) in that table is data which I need to extract and output in a csv format. What is the best way to do this and how can I do it?
Here is an example of what is in each html file which I need to extract
<table class="datalogs" cellspacing="5px">
<tr>< th>Data1</th><th>Data 2</th><th>Data 3</th><th>Data 4</th><th>Data 4< /th>< th>Data 5</th><th>Data 6</th></tr>
<tr class="odd"><td valign="top"><h4>123<br/></h4></td><td valign="top">AAA</td><td valign="top"><b>url here</b></td><td valign="top">Yes</td><td valign="top">None</td><td valign="top"></td><td valign="top"></td></tr><tr class="even">...
</table>
The ideal outcome would be
"123", "AAA", "url here", "Yes", "None", "", ""
If this cant be achieved in one go, then just extracting data between the table tags (defined by class="datalogs") and put all results into one file (this would be from a loop which goes through the directory and every file getting this table.
Thanks for your help
Doable in Perl, with the help of HTML::TableExtract and Text::CSV:
#!/usr/bin/perl
use warnings;
use strict;
use HTML::TableExtract;
use Text::CSV;
my $te = 'HTML::TableExtract'
->new(headers => ['Data1', 'Data 2', 'Data 3', 'Data 4',
'Data 4', 'Data 5', 'Data 6']);
my $csv = 'Text::CSV'->new({ binary => 1,
eol => "\n",
always_quote => 1,
});
while (#ARGV) {
my $file = shift;
open my $IN, '<', $file or die $!;
my $html = do { local $/; <$IN> };
$te->parse($html);
}
for my $table ($te->tables) {
$csv->print(*STDOUT{IO}, $_) for $table->rows;
}
I had to fix some error in your sample input (there should be no space between < and the tag name or /).
Update
Adding the file names to the first column: a new TableExtract object created for each file.
#!/usr/bin/perl
use warnings;
use strict;
use HTML::TableExtract;
use Text::CSV;
my $csv = 'Text::CSV'->new({ binary => 1,
eol => "\n",
always_quote => 1,
});
for my $file (#ARGV) {
open my $IN, '<', $file or die $!;
my $html = do { local $/; <$IN> };
my $te = 'HTML::TableExtract'
->new(headers => ['Data1', 'Data 2', 'Data 3', 'Data 4',
'Data 4', 'Data 5', 'Data 6']);
$te->parse($html);
$csv->print(*STDOUT{IO}, [$file, #$_]) for ($te->tables)[0]->rows;
}

Scraping multiple items off of a Page into a Neat Row

As an example:
I load in the input from a .txt:
Benjamin,Schuvlein,Germany,1912,M,White
I do some code that I will not post here for brevity and get to the link:
https://familysearch.org/pal:/MM9.1.1/K3BN-LLJ
I want to scrape multiple things from that page. In the code below, I only do 1.
I'd also like to make each item be separated by a , in the output .txt.
And, I'd like the output to be preceded by the input.
I'm using the following packages in the code:
use strict;
use warnings;
use WWW::Mechanize::Firefox;
use Data::Dumper;
use LWP::UserAgent;
use JSON;
use CGI qw/escape/;
use HTML::DOM;
Here's the relevant code:
my $ua = LWP::UserAgent->new;
open(my $o, '>', 'out2.txt') or die "Can't open output file: $!";
# Here is the url, although in practice, it is scraped itself using different code
my $url = 'https://familysearch.org/pal:/MM9.1.1/K3BN-LLJ';
print "My URL is <$url>\n";
my $request = HTTP::Request->new(GET => $url);
$request->push_header('Content-Type' => 'application/json');
my $response = $ua->request($request);
die "Error ".$response->code if !$response->is_success;
my $dom_tree = new HTML::DOM;
$dom_tree->write($response->content);
$dom_tree->close;
my $str = $dom_tree->getElementsByTagName('table')->[0]->getElementsByTagName("td")->[10]->as_text();
print $str;
print $o $str;
Desired Output (from that link) is something like:
Benjamin,Schuvlein,Germany,1912,M,White,Queens,New York,Married,Same Place,Head, etc ....
(How much of that output section is scrapable?)
Any help on how to get the link within the link would be much appreciated!
This is fairly simply done using HTML::TreeBuilder::XPath to access the HTML. This program builds a hash of the data using the labels as keys, so any of the desired information can be extracted. I have enclosed in quotes any fields that contain commas or whitespace.
I don't know whether you have the permission of this web site to extract data this way, but I should draw your attention to this X-Copyright header in the HTTP responses. This approach clearly falls under the header of programmatic access.
X-Copyright: COPYRIGHT WARNING Data accessible through the FamilySearch API is protected by copyright. Any programmatic access, reformatting, or rerouting of this data, without permission, is prohibited. FamilySearch considers such unauthorized use a violation of its reproduction, derivation, and distribution rights. Contact devnet (at) familysearch.org for further information.
Am I to expect an email from you? I replied to your first mail but haven't heard since.
use strict;
use warnings;
use URI;
use LWP;
use HTML::TreeBuilder::XPath;
my $url = URI->new('https://familysearch.org/pal:/MM9.1.1/K3BN-LLJ');
my $ua = LWP::UserAgent->new;
my $resp = $ua->get($url);
die $resp->status_line unless $resp->is_success;
my $tree = HTML::TreeBuilder::XPath->new_from_content($resp->decoded_content);
my #results = $tree->findnodes('//table[#class="result-data"]//tr[#class="result-item"]');
my %data;
for my $item (#results) {
my ($key, $val) = map $_->as_trimmed_text, $item->content_list;
$key =~ s/:$//;
$data{$key} = $val;
}
my $record = join ',', map { local $_ = $data{$_}; /[,\s]/ ? qq<"$_"> : $_ }
'name', 'birthplace', 'estimated birth year', 'gender', 'race (standardized)',
'event place', 'marital status', 'residence in 1935',
'relationship to head of household (standardized)';
print $record, "\n";
output
"Benjamin Schuvlein",Germany,1912,Male,White,"Assembly District 2, Queens, New York City, Queens, New York, United States",Married,"Same Place",Head
Try this
use LWP::Simple;
use LWP::UserAgent;
use HTML::TableExtract;
$ENV{'PERL_LWP_SSL_VERIFY_HOSTNAME'} = 0;
$ua = LWP::UserAgent->new;
$ua->agent("Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.91 Safari/537.11");
$req = HTTP::Request->new(GET => "https://familysearch.org/pal:/MM9.1.1/K3BN-LLJ");
$res = $ua->request($req);
$content = $res->content;
#$content = get("https://familysearch.org/pal:/MM9.1.1/K3BN-LLJ") or die "Couldn't get it! $!";
$te = HTML::TableExtract->new( attribs => { 'class' => 'result-data' } );
# $te = HTML::TableExtract->new( );
$te->parse($content);
$table = $te->first_table_found;
# print $content; exit;
# $te->tables_dump(1);
#print Dumper($te);
#print Dumper($table);
print $table->cell(4,0) . ' = ' . $table->cell(4,1), "\n"; exit;
Which prints out
event place: = Assembly District 2, Queens, New York City, Queens, New York, United States
I also noticed this header:
X-Copyright:COPYRIGHT WARNING Data accessible through the FamilySearch API is protected by copyright. Any programmatic access, reformatting, or rerouting of this data, without permission, is prohibited. FamilySearch considers such unauthorized use a violation of its reproduction, derivation, and distribution rights. Contact devnet (at) familysearch.org for further information.
See also http://metacpan.org/pod/HTML::Element#SYNOPSIS
I thought I had answered your question.
The problem is that you are trying to fetch the webpage with LWP. Why are try to doing that if you already have WWW::Mechanize::Firefox?
Did you tried this?
It will retrieve and save each link for further analyses. A small change and you 'get' the DOM tree. Sorry, I do not have acccess to this page, so I just hope it will work.
my $i=1;
for my $link (#links) {
print Dumper $link->url;
print Dumper $link->text;
my $tempfile = './$i.html';$i++;
$mech->get( $link, ':content_file' => $tempfile, synchronize => 1 );
my $dom_tree = $mech->document();
my $str = $dom_tree->getElementsByTagName('table')->[0]->getElementsByTagName("td")->[9]->as_text();
}
EDIT:
Process the page content with regexp (Everyone: Please remember, there is always more than one way to do something wwith Perl!. It works, it is easy...)
it tried it out with this cmd:
wget -nd 'https://familysearch.org/pal:/MM9.1.1/K3BN-LLJ' -O 1.html|cat 1.html|1.pl
use Data::Dumper;
use strict;
use warnings;
local $/=undef;
my $html = <>;#read from file
#$html = $mech->content( format => 'html' );# read data from mech object
my $data = {};
my $current_label = "not_defined";
while ($html =~ s!(<td[^>]*>.*?</td>)!!is){ # process each TD
my $td = $1;
print "td: $td\n";
my $td_val = $td;
$td_val =~ s!<[^>]*>!!gis;
$td_val =~ s!\s+! !gs;
$td_val =~ s!(\A\s+|\s+\z)!!gs;
if ($td =~ m!result-label!){ #primitive state machine, store the current label
print "current_label: $current_label\n";
$current_label = $td_val;
} elsif ($td =~ m!result-value!){ #add each data to current label
push(#{$data->{$current_label}},$td_val);
} else {
warn "found something else: $td\n";
}
}
#process it using a white lists of known entries (son,race, etc).Delete from the result if you find it on white list, die if you find something new.
#multi type
foreach my $type (qw(son wife daughter head)){
process_multi($type,$data->{$type});
delete($data->{$type});
}
#simple type
foreach my $type (qw(birthplace age)){
process_simple($type,$data->{$type});
delete($data->{$type});
}
die "Unknown label!".Dumper($data) if scalar(keys %{$data})>0;
Output:
'line number:' => [
'28'
],
'estimated birth year:' => [
'1912'
],
'head' => [
'Benjamin Schuvlein',
'M',
'28',
'Germany'
],

Resources