All posts in 'English posts'

regex: URL thingy with username, password, host and port

07-Jul-08

Just in case i do keep forgetting that stuff, here’s a regex for decoding urls like ftp://user:somepass@somehost:someport in Java: final Hashtable<String, Integer> portMap = new Hashtable<String, Integer>(); portMap.put("ftp", 21); portMap.put("sftp", 22);   final Pattern urlPattern = Pattern.compile("(ftp|sftp)://(\\S+):(\\S+)@([\\S&&[^:]]+)(:(\\d+))?");   final Matcher m = urlPattern.matcher(url); if(!m.matches()) throw new RuntimeException("Invalid ftp url!");   final String protocol = m.group(1).toLowerCase(); […]

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Rails 2.1: send_file :x_sendfile => true

05-Jun-08

The “x_sendfile” argument on the send_file method in Rails 2.1 is not well thought off as it has an impact in development mode also. I guess most Rails coders won’t have Apache proxying their mongrels in dev mode and so they don’t get to see any images or files but the plain path information. I’ll […]

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Oracle XE environment variables on Linux

04-Jun-08

Just a quick reminder for myself: With the default installation of an Oracle Express (Oracle XE) comes two shell script with all the necessary environment variables to use sql*plus, exp, imp and the like on the command line: source /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/oracle_env.shsource /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/oracle_env.sh respectively source /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/oracle_env.cshsource /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/oracle_env.csh

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PDF::Writer and Ruby on Rails 2.1

Some days ago, Ruby On Rails 2.1 saw the light of day and as usual, i eagerly updated my Daily Fratze project. I had some minor problems due to an old version of will_paginate and some major ones with my use of PDF::Writer. The PDF::Writer library still works very well but the the instructions here […]

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Hibernate and Inheritance Mapping

27-May-08

Hibernate supports multiple types of inheritance mapping, some of them (Table per class, Table per subclass) using a discriminator column to decide the class. The type of the discriminator can be one of string, character, integer, byte, short, boolean, yes_no, true_false In case you need to use any other than string or character, i.e. integer, […]

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