Simple 1-file example for Apache Camel and two transformers in one route

CamelTransformerExample.java

package de.kopis.examples;

import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.main.Main;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class CamelTransformerExample {
    public static void main(String... args) throws Exception {
        final Main main = new Main();
        main.addRouteBuilder(new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                from("file:input?noop=true")
                        // transform to REVERSE
                        .process(new Processor() {
                            private final Logger LOGGER = LoggerFactory.getLogger("Processor1");
                            public void process(final Exchange exchange) throws Exception {
                                LOGGER.info("Processing message: " + exchange.getIn().getBody(String.class));
                                Object body = exchange.getIn().getBody(String.class);
                                exchange.getOut().setBody(new StringBuilder((String) body).reverse());
                            }
                        })
                        // transform to UPPERCASE
                        .process(new Processor() {
                            private final Logger LOGGER = LoggerFactory.getLogger("Processor2");
                            public void process(final Exchange exchange) throws Exception {
                                LOGGER.info("Processing message: " + exchange.getIn().getBody(String.class));
                                Object body = exchange.getIn().getBody(String.class);
                                exchange.getOut().setBody(((String) body).toUpperCase());
                            }
                        })
                        .to("file:output");
            }
        });
        main.run();
    }
}

log4j.properties

# Root logger option
log4j.rootLogger=DEBUG, stdout

# Direct log messages to stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>de.kopis.examples</groupId>
    <artifactId>camel-transformer</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>org.apache.camel</groupId>
            <artifactId>camel-core</artifactId>
            <version>2.18.1</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.21</version>
        </dependency>
    </dependencies>

</project>