Archive for March, 2010

Getting the Lock Token for an item in Jackrabbit

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I’ve seen this problem around from the first versions of Apache Jackrabbit. The problem is straightforward and just. If you perform a WebDAV Lock command on an item in Jackrabbit the resulting lock token is available only in that command’s session. In other words, if you do not save the lock token that is provided […]

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Connect Lotus Script to Java using LS2J

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Introduced in Lotus Notes 6, LS2J allows the use of Java code from Lotus Script. To use LS2J from within Notes, your Lotus Script code must include this line:

This loads the LS2J Dynamic Link Library (DLL) on Win32 and registers all the Application Data Types (ADTs). Lotus Script provides a JavaSession ADT to […]

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Core Java: How to sort strings in a language-specific order

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When sorting a list of strings in alphabetical order you shouldn’t use the comparison methods of the String class (especially when writing internationalized programs). The String.compareTo method performs a binary comparison of the Unicode characters within the two strings, which is ineffective when sorting in most languages,

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ArgumentException in DataTable Select statement

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Under some circumstances, filtering a Datatable using its Select method may result in throwing following exception: “Min (some value) must be less than or equal to Max (-1) in a Range object.”

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AI-MAS 2010

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Two weeks ago I preferred the sleeping wagon of CFR instead of the driver seat of my car so I could travel to Bucharest where the AI-MAS Winter Olympics event took place and where Ropardo was one of the invitees. The reason I’m writing this so late is because just yesterday I came back from […]

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CeBit 2010 Review

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This year after 6 days that I participate at fair I can say that was good compared with 2009. I’ve meet new companies as well already partners and we had productive discussions about Ropardo SRL services and competencies.

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CeBIT open the gates again!

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Ropardo SRL participates at CeBIT 2010 where we are presenting our services. This year we are focused on: Research and Development services Near-shoring services

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How to create a zip file with Java and offer it for download

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In many web applications at some point a programmer meets the need to make an archive of a/some document(s) and offer this archive for download. The main JAVA utilities for executing this archiving task are inside package java.util.zip. These classes implement an output stream filter for writing files in the ZIP file format. They include […]

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Devexpress XtraGrid's multiple rows into footer

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This article describes a way to insert multiple rows into a Devexpres WinForm XtraGrid footer. First step is to add a XtraGrid into your WinForm and set to true it’s ShowFooter property. Once the footer it’s visible you can add cells into it using the GUI or programmatically. Code for adding cells into footer look […]

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