Te4j (Template Engine For Java) - Fastest and easy template engine

Lero4ka16

Last update: Nov 11, 2022

Overview

Te4j

About the project

Te4j (Template Engine For Java) - Fastest and easy template engine

Pros

Extremely fast (127k renders per second on 4790K)
Easy and simple syntax
No dependencies

Cons (`temporary`)

No community :(
Sometimes really bad code
No javadocs
Poor documentation

Benchmarks

Click me

Example

<p>Message: ^^ message ^^p>

class Pojo {
    String getMessage() {
        return "Hello world!";
    }
}

Pojo pojo = new Pojo();

Template<Pojo> template = Te4j.load(Pojo.class, "index.html");
String result = template.renderAsString(pojo);
// result = Message: Hello world!

Also, you are able to create custom template context

TemplateContext ctx = Te4j.custom()
        // deletes repeating spaces, tabs, cr and lf from output
        .replace(Te4j.DEL_ALL)
        // you can choose which output type will be used
        // 
        // if you want to choose multiple output types,
        // you can use | operator
        //
        // BYTES - renderAsBytes and renderTo will be optimized
        // STRING - renderAsString will be optimized
        .outputTypes(Te4j.BYTES | Te4j.STRING)
        // btw you can enable hot reloading
        //
        // it does not impact performance,
        // but I recommend disabling it in production
        // for max. performance
        .enableHotReloading()
        .build();

Template<Pojo> template = ctx.load(Pojo.class, "index.html");

More examples in docs

Full Docs

Click me

Add as dependency

Maven

<dependencies>
    <dependency>
        <groupId>com.github.lero4ka16groupId>
        <artifactId>te4jartifactId>
        <version>1.1.1version>
    dependency>
dependencies>

Gradle

dependencies {
    implementation 'com.github.lero4ka16:te4j:1.1.1'
}

Build the project

Execute ./gradlew build
Output file located at build/libs/te4j.jar

Contact

Vkontakte, Telegram

Post Scriptum

I will be very glad if someone can help me with development.

Comments

Code Review (?)
https://github.com/lero4ka16/te4j/blob/512eed9cecbb8c651b34282545d74fdc36c74beb/src/main/java/com/github/lero4ka16/te4j/util/RuntimeJavaCompiler.java#L68

You should probably just make the method synchronized instead of having a sync block on TMP as I assume #compile should only be accessed by one thread at any given moment anyway.

https://github.com/lero4ka16/te4j/blob/512eed9cecbb8c651b34282545d74fdc36c74beb/src/main/java/com/github/lero4ka16/te4j/util/RuntimeJavaCompiler.java#L50-L66 This isn't thread safe! You synchronize the TMP variable but your superclass, interfaces and content variables can be concurrently modified during compilation!

https://github.com/lero4ka16/te4j/blob/512eed9cecbb8c651b34282545d74fdc36c74beb/src/main/java/com/github/lero4ka16/te4j/util/RuntimeJavaCompiler.java#L100-L126

What are you trying to do here? If you're validating the generated classes just check if the compiler failed. So: Based on Java 8 documentation for JavaCompiler

int code = compiler#run(...) if (code != 0) { // some error in compilation }
opened by md5sha256 6

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