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Lucene example source code file (shingle.bm2jira.pl)

This example Lucene source code file (shingle.bm2jira.pl) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Lucene tags/keywords

apache, asf, asf, conditions, four, license, license, see, unigrams, unigrams, unigramsonly, unigramsonly, win32, you

The Lucene shingle.bm2jira.pl source code

#!/usr/bin/perl
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
# 
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# ----------
# shingle.bm2jira.pl
#
# Converts Lucene contrib-benchmark output produced using the 
# conf/shingle.alg file into a JIRA-formatted table.
#

use strict;
use warnings;

my %min_elapsed = ();

#Operation           round  runCnt  recsPerRun  rec/s      elapsedSec  avgUsedMem  avgTotalMem
#BigramsAndUnigrams  0      1       255691      21,147.22  12.09       15,501,840  35,061,760
#BigramsOnly   -  -  0 -  - 1 -  -  127383   -  16,871.92  7.55    -   31,725,312  41,746,432
#FourgramsAndUnigrams
#FourgramsOnly
#UnigramsOnly

while (<>) {
  if (/^((?:Uni|Bi|Four)grams\S+)[-\s]*([^\s{].*)/) {
    my $operation = $1;
    my $stats = $2;
    my $max_shingle_size 
    = ($operation =~ /^Bigrams/ ? 2 : $operation =~ /^Unigrams/ ? 1 : 4);
    my $output_unigrams 
      = ($operation =~ /(?:AndUnigrams|UnigramsOnly)$/ ? 'yes' : 'no'); 
    my ($elapsed) = $stats =~ /(?:[\d,.]+[-\s]*){4}([.\d]+)/;
    $min_elapsed{$max_shingle_size}{$output_unigrams} = $elapsed
      unless (defined($min_elapsed{$max_shingle_size}{$output_unigrams})
              && $elapsed >= $min_elapsed{$max_shingle_size}{$output_unigrams});
  }
}

# Print out platform info
print "JAVA:\n", `java -version 2>&1`, "\nOS:\n";
if ($^O =~ /win/i) {
  print "$^O\n";
  eval {
    require Win32;
    print Win32::GetOSName(), "\n", Win32::GetOSVersion(), "\n";
  };
  die "Error loading Win32: $@" if ($@);
} else {
  print `uname -a 2>&1`;
}

print "\n||Max Shingle Size||Unigrams?||Elapsed||\n";

for my $max_shingle_size (sort { $a <=> $b } keys %min_elapsed) {
  for my $output_unigrams (sort keys %{$min_elapsed{$max_shingle_size}}) {
    my $size = (1 == $max_shingle_size ? '1 (Unigrams)' : $max_shingle_size);   
    printf "|$size|$output_unigrams|\%2.2fs|\n",
           $min_elapsed{$max_shingle_size}{$output_unigrams};
  }
}

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