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May 25, 2011 · You can create an empty list, which would satisfy all your needs for an array, in an Apache Velocity template with an expression like: #set($foo = []) or initialize values:
- Introduction
- Quick Overview
- The Include Tag
- Handling Value Existence
- The if-else Tag
- Containers of sub-variables
- Type Handling
- Exception Handling
- Conclusion
FreeMarker is a template engine, written in Java, and maintained by the Apache Foundation. We can use the FreeMarker Template Language, also known as FTL, to generate many text-based formats like web pages, email, or XML files. In this tutorial, we’ll see what we can do out-of-the-box with FreeMarker, though note that it is quite configurable and e...
To inject dynamic content in our pages, we need to use a syntax that FreeMarker understands: 1. ${…} in the template will be replaced in the generated output with the actual value of the expression inside the curly brackets – we call this interpolation – a couple of examples are ${1 + 2} and ${variableName} 2. FTL tags are like HTML tags (but conta...
The FTL include directive is a way for us to follow the DRY principle in our application. We will define the repetitive content in a file and reuse it across different FreeMarker templates with single includetag. One such use case is when we want to include the menu section inside many pages. First, we’ll define the menu section inside a file – we’...
FTL will consider any null value as a missing value. Thus, we need to be extra careful and add logic to handle null inside our template. We can use the ?operator to check if an attribute, or nested property, exists. The result is a boolean: So, we’ve tested the attribute for null, but that’s not always enough. Let’s now define a default value as a ...
Control structures are present in FreeMarker, and the traditional if-else is probably familiar: While the elseif and elsebranches are optional, the conditions must resolve to a boolean value. To help us with our evaluations, we’ll likely use one of: 1. x == y to check is x is equal to y 2. x != y to return true only if x differs from y 3. x lt y me...
In FreeMarker, we have three types of containers for sub-variables: 1. Hashes are a sequence of key-value pairs – the key must be unique inside the hash and we don’t have an ordering 2. Sequences are lists where we have an index associated with each value – a noteworthy fact is that sub-variables can be of different types 3. Collections are a speci...
FreeMarker comes with a huge variety of functions(built-ins) available for working with objects. Let’s see some frequently used functions.
We’ll see two ways to handle exceptions for a FreeMarker template. The first way is to use attempt-recovertags to define what we should try to execute and a block of code that should execute in case of error. The syntax is: Both attempt and recover tags are mandatory. In case of an error, it rolls back the attempted block and will execute only the ...
In this article, we’ve seen how to use the FreeMarker template engine inside our project. We’ve focused on common operations, how to manipulate different objects, and a few more advanced topics. The implementation of all these snippets is available over on GitHub.
May 12, 2022 · What is Software Development Plan? Purpose and objective of a Software Development Plan; What should be included in the software development plan? Steps to Create Your Software Development...
Jan 9, 2024 · A software development plan (SDP) is a strategic roadmap that outlines the entire software development life cycle (SDLC), including goals, resources, budget, and timeline. It helps ensure...
Jun 4, 2024 · A Software Development Plan (SDP) is a comprehensive blueprint outlining the process and resources required to develop a software project successfully. It serves as a roadmap for the entire development team, detailing every aspect from initial planning to final deployment.
By investing time and effort into crafting a robust software development plan template tailored to your project’s unique needs, you’re not just laying the groundwork for success; you’re charting a course that navigates the complexities of software development with confidence and clarity.
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Feb 14, 2024 · A software development template is one of the best solutions to efficiently streamline all the tasks and organizational pieces of the software development process, using a standard outline to organize key details, systems, software features, and other project requirements.
