This repo is superseded by skiedrowski/sktooling containing the Jakarta EE 10 version.

The main branch will still be maintained for JavaEE 8

Inject Properties defined in external files using CDI

published in my github packages repo

repositories {
	maven { url "https://maven.pkg.github.com/skiedrowski/cdi-tools" }
}
	
dependencies {
 	compile "com.github.skiedrowski.tools.cdi:cdi-tools:$ver.cdi_properties"
}

Module cdi-properties

Usage (Kotlin)

Given: a properties file named my.properties in the config dir of the application with the following contents:

key1=value1
key2=value2
int1=12345
bool1=true
bool2=false

The config dir is a directory available to the program via the System Property config.dir. If this System Property is undefined, the working dir will be used.

Use Case 1 Inject the whole properties file

class MyClass 
	@Inject constructor(@param:PropertiesFromFile("my.properties") private val my: Properties) {

	fun myFunction() {
		val propertyValue = my["key1"]
		println(propertyValue)
	}
}

class MyClass {
	@Inject 
	@PropertiesFromFile("my.properties") 
	val my: Properties
	
	fun myFunction() {
		val propertyValue = my["key1"]
		println(propertyValue)
	}
}

This prints "value1" to the console.

Use Case 2 Inject a single property

class MyClass {

	@Inject
	@PropertyFromFile("my.properties", "key1")
	lateinit var key1 : String
	
	@Inject
    @PropertyFromFile("my.properties")
    lateinit var bool1 : Boolean
    
    @Inject
    @PropertyFromFile
    lateinit var int1 : Int
}

The filename is optional (defaults to config.properties). You may use constructor injection or field injection (setter injection is not tested, but should work, too. File a ticket if not.)