Java

FreshMarker und OWASP

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It will come as no surprise that FreshMarker, like all other template engines, must take precautions against template injection. Template injection is a security vulnerability that occurs when an application handles templates insecurely. Templates are prefabricated files or strings with placeholders that are replaced by data from users or other sources. Similar to FreeMarker, FreshMarker also has an escape mechanism that detects special characters in the interpolations using a harmless variant. If the standard mechanism is not enough, OWASP can help out.

Jackson Bitrate Support with JSR 385

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Java Bibliotheken

Many interesting libraries are created through the Java Specification Requests process. Many of them are incorporated directly into the JDK, but some exist as independent libraries. Some time ago I wrote about the Moneta library. This article is about a Jackson use case for Indriya, the JSR 385 (Units of Measurement API) reference implementation.

FreshMarker Performance (2)

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In the first article on FreshMarker performance, some of the template engine’s speed problems were addressed. The benchmark showed a tripling of the speed for these adjustments. In this article, the use of Reflections will be removed, which is certainly also of interest outside of a template engine.

FreshMarker Performance (1)

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FreshMarker started as an academic project. The main aim was to show how a template engine can be created. At some point, however, the question arose as to how fast the template engine actually is. To be honest, it has been slow so far. But first things first.

FreshMarkers Roman Numbers

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FreshMarker is quite a small library, about 475 KB in size. Therefore there is always room to make a few small additions. One of these is the display of numbers and loop variables with Roman numerals.

Partial Template Reduktion (2)

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In the first article on the implementation of the Partial Template Reduction feature, a few basic functions were created. This part deals with the implementation for the If-, Switch- and List- Directives.

Null Equality in Templates

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This is an article that reports directly from the bowels of FreshMarker. It is therefore mainly worthwhile for readers who want to know a little more about how FreshMarker works.

FreshMarker Money Support

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Anyone working with monetary amounts in Java should definitely take a look at the Moneta project. A long time ago there was an article on this subject – JSR 354 – Your number for the money. Surprisingly, however, I had forgotten about Moneta support for FreshMarker. I’ll make up for that now.

FreshMarker Partial Template Reduction

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Some blog posts are about ideas and not solutions. This has the pleasant advantage for the author that the content of the contribution does not (yet) have to work. It also saves the developer work if the audience does not appreciate the topic. When working with templates, there are always a number of variables that are processed in a template with always the same value. It would be nice if you could save computing time there.

FreshMarker Sorted Hash Lists

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I really like it when I can add new features to FreshMarker, especially if they are easy to implement and integrate elegantly into the overall system.