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SPR-9566
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‎SPR-9566/README.md

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See ArgumentConversionTest.
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Uses a simple SpEL expression to send a byte[] to a method, which
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simply returns its parameter. As you can see the array is copied
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before the method invocation.

‎SPR-9566/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
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<modelVersion>4.0.0</modelVersion>
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<groupId>org.springframework.samples.spring</groupId>
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<artifactId>SPR-9566</artifactId>
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<version>1.0.0.CI-SNAPSHOT</version>
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<packaging>jar</packaging>
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<name>Spring Utility</name>
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<url>http://www.springframework.org</url>
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<description>
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<![CDATA[
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This project is a minimal jar utility with Spring configuration.
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]]>
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</description>
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<properties>
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<maven.test.failure.ignore>true</maven.test.failure.ignore>
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<spring.framework.version>3.2.0.BUILD-SNAPSHOT</spring.framework.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.7</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-test</artifactId>
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<version>${spring.framework.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-context</artifactId>
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<version>${spring.framework.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-expression</artifactId>
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<version>${spring.framework.version}</version>
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</dependency>
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<dependency>
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<groupId>log4j</groupId>
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<artifactId>log4j</artifactId>
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<version>1.2.14</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<configuration>
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<source>1.5</source>
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<target>1.5</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

‎SPR-9566/src/main/java/net/gprussell/spel/ExampleService.java

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package net.gprussell.spel;
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import org.springframework.stereotype.Component;
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/**
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* {@link Service} with hard-coded input data.
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*/
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@Component
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public class ExampleService implements Service {
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public String getMessage() {
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return "Hello world!";
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}
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public byte[] handleBytes(byte[] bytes) {
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return bytes;
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}
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}

‎SPR-9566/src/main/java/net/gprussell/spel/Service.java

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package net.gprussell.spel;
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public interface Service {
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String getMessage();
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byte[] handleBytes(byte[] bytes);
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}

‎SPR-9566/src/main/resources/META-INF/spring/app-context.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:context="http://www.springframework.org/schema/context"
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xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
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http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
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<bean id="service" class="net.gprussell.spel.ExampleService"/>
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</beans>

‎SPR-9566/src/test/java/net/gprussell/spel/ArgumentConversionTest.java

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package net.gprussell.spel;
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import static org.junit.Assert.assertSame;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.springframework.beans.factory.BeanFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.context.expression.BeanFactoryResolver;
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import org.springframework.expression.Expression;
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import org.springframework.expression.spel.standard.SpelExpressionParser;
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import org.springframework.expression.spel.support.StandardEvaluationContext;
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import org.springframework.test.context.ContextConfiguration;
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import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
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@ContextConfiguration
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@RunWith(SpringJUnit4ClassRunner.class)
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public class ArgumentConversionTest {
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@Autowired
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private BeanFactory beanFactory;
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@Test
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public void testBytesNotCopied() throws Exception {
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Expression expression = new SpelExpressionParser().parseExpression("@service.handleBytes(#root)");
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byte[] bytes = new byte[100];
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StandardEvaluationContext evaluationContext = new StandardEvaluationContext(bytes);
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evaluationContext.setBeanResolver(new BeanFactoryResolver(this.beanFactory));
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byte[] outBytes = expression.getValue(evaluationContext, byte[].class);
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assertSame(bytes, outBytes);
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}
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}

‎SPR-9566/src/test/resources/log4j.properties

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log4j.rootCategory=INFO, stdout
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log4j.appender.stdout=org.apache.log4j.ConsoleAppender
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log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
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log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %40.40c:%4L - %m%n
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‎SPR-9566/src/test/resources/net/gprussell/spel/ArgumentConversionTest-context.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
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<import resource="classpath:/META-INF/spring/app-context.xml"/>
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</beans>

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