JarCasting
loginitializer
This is the small library importing Java logging APIs (SLF4j, Apache commons-logging and Log4J).
Motivation
Groovy has implicit logging field injections with some simple annotation, as below.
@Grab(group='org.slf4j', module='slf4j-api', version='1.7.21')
import org.slf4j.*
import groovy.util.logging.Slf4j
@Slf4j
class LogstuffOnGroovy {
def foo() {
log.info "Hello, foo."
}
}
But Kotlin, using logging APIs bother to you (a little).
import org.slf4j.LoggerFactory
class LogstuffOnKotlin {
companion object {
val logger = LoggerFactory.getLogger(LogstuffOnKotlin::class.java)
}
fun foo() {
logger.info("Hello, foo.")
}
}
How to use
replace companion object block as below.
class LogstuffOnKotlin {
val logger = forSlf4j()
fun foo() {
logger.info("Hello, foo.")
}
}
Install
To add this product to your project, the first thing to is to add in the API.
maven:
<dependency>
<groupId>org.yggd</groupId>
<artifactId>kotlin-loginitializer</artifactId>
<version>1.0</version>
</dependency>
<!-- logging APIs you want.-->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
<scope>runtime</scope>
</dependency>
gradle:
repositories {
mavenCentral()
}
dependencies {
compile group: 'org.yggd', name: 'kotlin-loginitializer', version: '1.0'
runtime group: 'commons-logging', name: 'commons-logging', version: '1.2' // logging APIs you want.
}