- added new camel example (eugenp#812)

- added new camel context for junit test

spring-apache-camel/src/main/java/com/baeldung/camel/file/FileProcessor.java

@@ -0,0 +1,20 @@
+package com.baeldung.camel.file;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+import org.apache.camel.Exchange;
+import org.apache.camel.Processor;
+
+public class FileProcessor implements Processor {
+
+    public void process(Exchange exchange) throws Exception {
+        String originalFileName = (String) exchange.getIn().getHeader(Exchange.FILE_NAME, String.class);
+
+        Date date = new Date();
+        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH-mm-ss");
+        String changedFileName = dateFormat.format(date) + originalFileName;
+        exchange.getIn().setHeader(Exchange.FILE_NAME, changedFileName);
+    }
+
+}

spring-apache-camel/src/main/java/com/baeldung/camel/file/FileRouter.java

@@ -0,0 +1,15 @@
+package com.baeldung.camel.file;
+
+import org.apache.camel.builder.RouteBuilder;
+
+public class FileRouter extends RouteBuilder {
+
+    private static final String SOURCE_FOLDER = "src/test/source-folder";
+    private static final String DESTINATION_FOLDER = "src/test/destination-folder";
+
+    @Override
+    public void configure() throws Exception {
+        from("file://" + SOURCE_FOLDER + "?delete=true").process(new FileProcessor()).to("file://" + DESTINATION_FOLDER);
+    }
+
+}

spring-apache-camel/src/main/resources/camel-context-test.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
+	 http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd">
+
+	<bean id="fileRouter" class="com.baeldung.camel.file.FileRouter" />
+	<bean id="fileProcessor" class="com.baeldung.camel.file.FileProcessor" />
+
+	<camelContext xmlns="http://camel.apache.org/schema/spring">
+		<routeBuilder ref="fileRouter" />
+	</camelContext>
+
+</beans>

spring-apache-camel/src/main/resources/camel-context.xml

@@ -1,39 +1,39 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns="http://www.springframework.org/schema/beans"
-       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
 	 http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd">
 
-    <camelContext xmlns="http://camel.apache.org/schema/spring">
+	<camelContext xmlns="http://camel.apache.org/schema/spring">
 
-        <route customId="true" id="route1">
+		<route customId="true" id="route1">
 
-            <!-- Read files from input directory -->
-            <from uri="file://src/test/data/input"/>
+			<!-- Read files from input directory -->
+			<from uri="file://src/test/data/input" />
 
-            <!-- Transform content to UpperCase -->
-            <process ref="myFileProcessor"/>
+			<!-- Transform content to UpperCase -->
+			<process ref="myFileProcessor" />
 
-            <!-- Write converted file content -->
-            <to uri="file://src/test/data/outputUpperCase"/>
+			<!-- Write converted file content -->
+			<to uri="file://src/test/data/outputUpperCase" />
 
-            <!-- Transform content to LowerCase -->
-            <transform>
-                <simple>${body.toLowerCase()}</simple>
-            </transform>
+			<!-- Transform content to LowerCase -->
+			<transform>
+				<simple>${body.toLowerCase()}</simple>
+			</transform>
 
-            <!-- Write converted file content -->
-            <to uri="file://src/test/data/outputLowerCase"/>
+			<!-- Write converted file content -->
+			<to uri="file://src/test/data/outputLowerCase" />
 
-            <!-- Display process completion message on console -->
-            <transform>
-                <simple>.......... File content conversion completed ..........</simple>
-            </transform>
-            <to uri="stream:out"/>
+			<!-- Display process completion message on console -->
+			<transform>
+				<simple>.......... File content conversion completed ..........</simple>
+			</transform>
+			<to uri="stream:out" />
 
-        </route>
+		</route>
 
-    </camelContext>
+	</camelContext>
 
-    <bean id="myFileProcessor" class="com.baeldung.camel.processor.FileProcessor"/>
+	<bean id="myFileProcessor" class="com.baeldung.camel.processor.FileProcessor" />
 </beans>

spring-apache-camel/src/test/java/org/apache/camel/file/processor/FileProcessorTest.java

@@ -0,0 +1,68 @@
+package org.apache.camel.file.processor;
+
+import java.io.File;
+
+import org.apache.camel.CamelContext;
+import org.apache.camel.builder.RouteBuilder;
+import org.apache.camel.impl.DefaultCamelContext;
+import org.junit.Before;
+import org.junit.Test;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+import com.baeldung.camel.file.FileProcessor;
+
+
+public class FileProcessorTest {
+
+    private static final long DURATION_MILIS = 10000;
+    private static final String SOURCE_FOLDER = "src/test/source-folder";
+    private static final String DESTINATION_FOLDER = "src/test/destination-folder";
+
+    @Before
+    public void setUp() throws Exception {
+        File sourceFolder = new File(SOURCE_FOLDER);
+        File destinationFolder = new File(DESTINATION_FOLDER);
+
+        cleanFolder(sourceFolder);
+        cleanFolder(destinationFolder);
+
+        sourceFolder.mkdirs();
+        File file1 = new File(SOURCE_FOLDER + "/File1.txt");
+        File file2 = new File(SOURCE_FOLDER + "/File2.txt");
+        file1.createNewFile();
+        file2.createNewFile();
+    }
+
+    private void cleanFolder(File folder) {
+        File[] files = folder.listFiles();
+        if (files != null) {
+            for (File file : files) {
+                if (file.isFile()) {
+                    file.delete();
+                }
+            }
+        }
+    }
+
+    @Test
+    public void moveFolderContentJavaDSLTest() throws Exception {
+        final CamelContext camelContext = new DefaultCamelContext();
+        camelContext.addRoutes(new RouteBuilder() {
+            @Override
+            public void configure() throws Exception {
+                from("file://" + SOURCE_FOLDER + "?delete=true").process(new FileProcessor()).to("file://" + DESTINATION_FOLDER);
+            }
+        });
+        camelContext.start();
+        Thread.sleep(DURATION_MILIS);
+        camelContext.stop();
+    }
+
+    @Test
+    public void moveFolderContentSpringDSLTest() throws InterruptedException {
+        ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("camel-context-test.xml");
+        Thread.sleep(DURATION_MILIS);
+        applicationContext.close();
+
+    }
+}