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Commit 6c5c149

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hmkcodehmkcode
committed
java-spi
java service provider interface
1 parent dc0b1bc commit 6c5c149
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‎java-spi/java-spi-api/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" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.hmkcode.api</groupId>
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<artifactId>java-spi-api</artifactId>
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<version>1.0-SNAPSHOT</version>
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<name>java-spi-api</name>
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<!-- FIXME change it to the project's website -->
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<url>http://www.example.com</url>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>1.7</maven.compiler.source>
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<maven.compiler.target>1.7</maven.compiler.target>
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</properties>
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<dependencies>
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</dependencies>
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</project>
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‎java-spi/java-spi-api/src/main/java/com/hmkcode/api/MyService.java‎

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package com.hmkcode.api;
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public interface MyService {
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void doSomething();
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}
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‎java-spi/java-spi-api/src/main/java/com/hmkcode/api/MyServiceProviderInterface.java‎

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package com.hmkcode.api;
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public interface MyServiceProviderInterface {
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MyService getService();
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}
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‎java-spi/java-spi-app/lib/java-spi-api-1.0-SNAPSHOT.jar‎

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2.43 KB
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‎java-spi/java-spi-app/lib/java-spi-impl1-1.0-SNAPSHOT.jar‎

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3.25 KB
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‎java-spi/java-spi-app/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" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.hmkcode.app</groupId>
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<artifactId>java-spi-app</artifactId>
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<version>1.0-SNAPSHOT</version>
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<name>java-spi-app</name>
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<!-- FIXME change it to the project's website -->
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<url>http://www.example.com</url>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>1.7</maven.compiler.source>
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<maven.compiler.target>1.7</maven.compiler.target>
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</properties>
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<dependencies>
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<dependency>
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<groupId>com.hmkcode.api</groupId>
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<artifactId>java-spi-api</artifactId>
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<version>1.0-SNAPSHOT</version>
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<scope>system</scope>
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<systemPath>${project.basedir}/lib/java-spi-api-1.0-SNAPSHOT.jar</systemPath>
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</dependency>
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<dependency>
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<groupId>com.hmkcode.impl</groupId>
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<artifactId>java-spi-impl1</artifactId>
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<version>1.0-SNAPSHOT</version>
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<scope>system</scope>
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<systemPath>${project.basedir}/lib/java-spi-impl1-1.0-SNAPSHOT.jar</systemPath>
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</dependency>
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</dependencies>
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</project>
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‎java-spi/java-spi-app/src/main/java/com/hmkcode/app/App.java‎

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package com.hmkcode.app;
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public class App
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{
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public static void main( String[] args )
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{
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MyServiceLoader.defaultProvider().getService().doSomething();
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}
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}
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‎java-spi/java-spi-app/src/main/java/com/hmkcode/app/MyServiceLoader.java‎

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package com.hmkcode.app;
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import java.nio.file.ProviderNotFoundException;
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import java.util.Iterator;
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import java.util.ServiceLoader;
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import com.hmkcode.api.MyServiceProviderInterface;
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public class MyServiceLoader {
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private static final String DEFAULT_PROVIDER = "com.hmkcode.impl.MyServiceProviderImpl1";
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public static MyServiceProviderInterface defaultProvider() {
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return provider(DEFAULT_PROVIDER);
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}
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public static MyServiceProviderInterface provider(String providerName) {
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ServiceLoader<MyServiceProviderInterface> loader = ServiceLoader.load(MyServiceProviderInterface.class);
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Iterator<MyServiceProviderInterface> it = loader.iterator();
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while (it.hasNext()) {
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MyServiceProviderInterface provider = it.next();
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if (providerName.equals(provider.getClass().getName())) {
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return provider;
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}
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}
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throw new ProviderNotFoundException("provider " + providerName + " not found");
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}
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}
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‎java-spi/java-spi-impl1/lib/java-spi-api-1.0-SNAPSHOT.jar‎

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2.43 KB
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‎java-spi/java-spi-impl1/pom.xml‎

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+31Lines changed: 31 additions & 0 deletions
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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" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.hmkcode.impl</groupId>
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<artifactId>java-spi-impl1</artifactId>
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<version>1.0-SNAPSHOT</version>
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<name>java-spi-impl1</name>
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<!-- FIXME change it to the project's website -->
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<url>http://www.example.com</url>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>1.7</maven.compiler.source>
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<maven.compiler.target>1.7</maven.compiler.target>
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</properties>
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<dependencies>
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<dependency>
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<groupId>com.hmkcode.api</groupId>
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<artifactId>java-spi-api</artifactId>
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<version>1.0-SNAPSHOT</version>
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<scope>system</scope>
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<systemPath>${project.basedir}/lib/java-spi-api-1.0-SNAPSHOT.jar</systemPath>
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</dependency>
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</dependencies>
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</project>

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