Merge pull request #7038 from gmconte/BAEL-2899
Bael 2899 - Integrating Groovy into Java Applications
This commit is contained in:
Eric Martin
GitHub
commit
871a4b35ab
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@ -0,0 +1,178 @@
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<?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>
|
||||
<artifactId>core-groovy-2</artifactId>
|
||||
<version>1.0-SNAPSHOT</version>
|
||||
<name>core-groovy-2</name>
|
||||
<packaging>jar</packaging>
|
||||
|
||||
<parent>
|
||||
<groupId>com.baeldung</groupId>
|
||||
<artifactId>parent-modules</artifactId>
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||||
<version>1.0.0-SNAPSHOT</version>
|
||||
</parent>
|
||||
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>org.apache.commons</groupId>
|
||||
<artifactId>commons-lang3</artifactId>
|
||||
<version>${commons-lang3.version}</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>ch.qos.logback</groupId>
|
||||
<artifactId>logback-classic</artifactId>
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||||
<version>${logback.version}</version>
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||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.codehaus.groovy</groupId>
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<artifactId>groovy-all</artifactId>
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||||
<version>${groovy.version}</version>
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||||
<type>pom</type>
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||||
</dependency>
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||||
<dependency>
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||||
<groupId>org.junit.platform</groupId>
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||||
<artifactId>junit-platform-runner</artifactId>
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||||
<version>${junit.platform.version}</version>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.hsqldb</groupId>
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||||
<artifactId>hsqldb</artifactId>
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||||
<version>${hsqldb.version}</version>
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||||
<scope>test</scope>
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||||
</dependency>
|
||||
<dependency>
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<groupId>org.spockframework</groupId>
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||||
<artifactId>spock-core</artifactId>
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||||
<version>${spock-core.version}</version>
|
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<scope>test</scope>
|
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</dependency>
|
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</dependencies>
|
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|
||||
<build>
|
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<scriptSourceDirectory>src/main/groovy</scriptSourceDirectory>
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<sourceDirectory>src/main/java</sourceDirectory>
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||||
<plugins>
|
||||
<plugin>
|
||||
<groupId>org.codehaus.gmavenplus</groupId>
|
||||
<artifactId>gmavenplus-plugin</artifactId>
|
||||
<version>1.7.0</version>
|
||||
<executions>
|
||||
<execution>
|
||||
<goals>
|
||||
<goal>execute</goal>
|
||||
<goal>addSources</goal>
|
||||
<goal>addTestSources</goal>
|
||||
<goal>generateStubs</goal>
|
||||
<goal>compile</goal>
|
||||
<goal>generateTestStubs</goal>
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||||
<goal>compileTests</goal>
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||||
<goal>removeStubs</goal>
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||||
<goal>removeTestStubs</goal>
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</goals>
|
||||
</execution>
|
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</executions>
|
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<dependencies>
|
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<dependency>
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<groupId>org.codehaus.groovy</groupId>
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<artifactId>groovy-all</artifactId>
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<!-- any version of Groovy \>= 1.5.0 should work here -->
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<version>${groovy.version}</version>
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<scope>runtime</scope>
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<type>pom</type>
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||||
</dependency>
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</dependencies>
|
||||
</plugin>
|
||||
<plugin>
|
||||
<groupId>org.apache.maven.plugins</groupId>
|
||||
<artifactId>maven-compiler-plugin</artifactId>
|
||||
</plugin>
|
||||
<plugin>
|
||||
<artifactId>maven-failsafe-plugin</artifactId>
|
||||
<version>${maven-failsafe-plugin.version}</version>
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>org.junit.platform</groupId>
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||||
<artifactId>junit-platform-surefire-provider</artifactId>
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||||
<version>${junit.platform.version}</version>
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||||
</dependency>
|
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</dependencies>
|
||||
<executions>
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||||
<execution>
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<id>junit5</id>
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<goals>
|
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<goal>integration-test</goal>
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<goal>verify</goal>
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</goals>
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<configuration>
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<includes>
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<include>**/*Test5.java</include>
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</includes>
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</configuration>
|
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</execution>
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</executions>
|
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</plugin>
|
||||
<plugin>
|
||||
<artifactId>maven-surefire-plugin</artifactId>
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||||
<version>2.20.1</version>
|
||||
<configuration>
|
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<useFile>false</useFile>
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||||
<includes>
|
||||
<include>**/*Test.java</include>
|
||||
<include>**/*Spec.java</include>
|
||||
</includes>
|
||||
</configuration>
|
||||
</plugin>
|
||||
<!-- Maven Assembly Plugin: needed to run the jar through command line -->
|
||||
<plugin>
|
||||
<groupId>org.apache.maven.plugins</groupId>
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||||
<artifactId>maven-assembly-plugin</artifactId>
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||||
<version>3.1.0</version>
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||||
<configuration>
|
||||
<!-- get all project dependencies -->
|
||||
<descriptorRefs>
|
||||
<descriptorRef>jar-with-dependencies</descriptorRef>
|
||||
</descriptorRefs>
|
||||
<!-- MainClass in mainfest make a executable jar -->
|
||||
<archive>
|
||||
<manifest>
|
||||
<mainClass>com.baeldung.MyJointCompilationApp</mainClass>
|
||||
</manifest>
|
||||
</archive>
|
||||
|
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</configuration>
|
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<executions>
|
||||
<execution>
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<id>make-assembly</id>
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||||
<!-- bind to the packaging phase -->
|
||||
<phase>package</phase>
|
||||
<goals>
|
||||
<goal>single</goal>
|
||||
</goals>
|
||||
</execution>
|
||||
</executions>
|
||||
</plugin>
|
||||
</plugins>
|
||||
</build>
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|
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<repositories>
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<repository>
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<id>central</id>
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<url>http://jcenter.bintray.com</url>
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</repository>
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</repositories>
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|
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<properties>
|
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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||||
<junit.platform.version>1.0.0</junit.platform.version>
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<hsqldb.version>2.4.0</hsqldb.version>
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||||
<spock-core.version>1.1-groovy-2.4</spock-core.version>
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<commons-lang3.version>3.9</commons-lang3.version>
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<java.version>1.8</java.version>
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||||
<logback.version>1.2.3</logback.version>
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||||
<groovy.version>2.5.7</groovy.version>
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||||
<gmavenplus-plugin.version>1.6</gmavenplus-plugin.version>
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||||
</properties>
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</project>
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|
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|
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@ -1,6 +1,6 @@
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<?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">
|
||||
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>
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||||
<artifactId>core-groovy-2</artifactId>
|
||||
<version>1.0-SNAPSHOT</version>
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|
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@ -15,25 +15,20 @@
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|
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<dependencies>
|
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<dependency>
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<groupId>org.codehaus.groovy</groupId>
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<artifactId>groovy</artifactId>
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<version>${groovy.version}</version>
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<groupId>org.apache.commons</groupId>
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||||
<artifactId>commons-lang3</artifactId>
|
||||
<version>${commons-lang3.version}</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>ch.qos.logback</groupId>
|
||||
<artifactId>logback-classic</artifactId>
|
||||
<version>${logback.version}</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.codehaus.groovy</groupId>
|
||||
<artifactId>groovy-all</artifactId>
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<version>${groovy-all.version}</version>
|
||||
<type>pom</type>
|
||||
</dependency>
|
||||
<dependency>
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<groupId>org.codehaus.groovy</groupId>
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||||
<artifactId>groovy-dateutil</artifactId>
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<version>${groovy.version}</version>
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</dependency>
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<dependency>
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<groupId>org.codehaus.groovy</groupId>
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<artifactId>groovy-sql</artifactId>
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<version>${groovy-sql.version}</version>
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<type>pom</type>
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</dependency>
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||||
<dependency>
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<groupId>org.junit.platform</groupId>
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@ -56,21 +51,35 @@
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</dependencies>
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|
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<build>
|
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<scriptSourceDirectory>src/main/groovy</scriptSourceDirectory>
|
||||
<sourceDirectory>src/main/java</sourceDirectory>
|
||||
<plugins>
|
||||
<plugin>
|
||||
<groupId>org.codehaus.gmavenplus</groupId>
|
||||
<artifactId>gmavenplus-plugin</artifactId>
|
||||
<version>${gmavenplus-plugin.version}</version>
|
||||
<executions>
|
||||
<execution>
|
||||
<goals>
|
||||
<goal>addSources</goal>
|
||||
<goal>addTestSources</goal>
|
||||
<goal>compile</goal>
|
||||
<goal>compileTests</goal>
|
||||
</goals>
|
||||
</execution>
|
||||
</executions>
|
||||
<groupId>org.codehaus.groovy</groupId>
|
||||
<artifactId>groovy-eclipse-compiler</artifactId>
|
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<version>3.3.0-01</version>
|
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<extensions>true</extensions>
|
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</plugin>
|
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<plugin>
|
||||
<artifactId>maven-compiler-plugin</artifactId>
|
||||
<version>3.8.0</version>
|
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<configuration>
|
||||
<compilerId>groovy-eclipse-compiler</compilerId>
|
||||
<source>${java.version}</source>
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<target>${java.version}</target>
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||||
</configuration>
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>org.codehaus.groovy</groupId>
|
||||
<artifactId>groovy-eclipse-compiler</artifactId>
|
||||
<version>3.3.0-01</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.codehaus.groovy</groupId>
|
||||
<artifactId>groovy-eclipse-batch</artifactId>
|
||||
<version>${groovy.version}-01</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
</plugin>
|
||||
<plugin>
|
||||
<artifactId>maven-failsafe-plugin</artifactId>
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||||
|
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@ -101,13 +110,42 @@
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<artifactId>maven-surefire-plugin</artifactId>
|
||||
<version>2.20.1</version>
|
||||
<configuration>
|
||||
<useFile>false</useFile>
|
||||
<includes>
|
||||
<include>**/*Test.java</include>
|
||||
<include>**/*Spec.java</include>
|
||||
</includes>
|
||||
<useFile>false</useFile>
|
||||
<includes>
|
||||
<include>**/*Test.java</include>
|
||||
<include>**/*Spec.java</include>
|
||||
</includes>
|
||||
</configuration>
|
||||
</plugin>
|
||||
<!-- Maven Assembly Plugin: needed to run the jar through command line -->
|
||||
<plugin>
|
||||
<groupId>org.apache.maven.plugins</groupId>
|
||||
<artifactId>maven-assembly-plugin</artifactId>
|
||||
<version>3.1.0</version>
|
||||
<configuration>
|
||||
<!-- get all project dependencies -->
|
||||
<descriptorRefs>
|
||||
<descriptorRef>jar-with-dependencies</descriptorRef>
|
||||
</descriptorRefs>
|
||||
<!-- MainClass in mainfest make a executable jar -->
|
||||
<archive>
|
||||
<manifest>
|
||||
<mainClass>com.baeldung.MyJointCompilationApp</mainClass>
|
||||
</manifest>
|
||||
</archive>
|
||||
|
||||
</configuration>
|
||||
<executions>
|
||||
<execution>
|
||||
<id>make-assembly</id>
|
||||
<!-- bind to the packaging phase -->
|
||||
<phase>package</phase>
|
||||
<goals>
|
||||
<goal>single</goal>
|
||||
</goals>
|
||||
</execution>
|
||||
</executions>
|
||||
</plugin>
|
||||
</plugins>
|
||||
</build>
|
||||
|
||||
|
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@ -118,14 +156,32 @@
|
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</repository>
|
||||
</repositories>
|
||||
|
||||
<pluginRepositories>
|
||||
<pluginRepository>
|
||||
<id>bintray</id>
|
||||
<name>Groovy Bintray</name>
|
||||
<url>https://dl.bintray.com/groovy/maven</url>
|
||||
<releases>
|
||||
<!-- avoid automatic updates -->
|
||||
<updatePolicy>never</updatePolicy>
|
||||
</releases>
|
||||
<snapshots>
|
||||
<enabled>false</enabled>
|
||||
</snapshots>
|
||||
</pluginRepository>
|
||||
</pluginRepositories>
|
||||
|
||||
|
||||
<properties>
|
||||
<junit.platform.version>1.0.0</junit.platform.version>
|
||||
<groovy.version>2.5.6</groovy.version>
|
||||
<groovy-all.version>2.5.6</groovy-all.version>
|
||||
<groovy-sql.version>2.5.6</groovy-sql.version>
|
||||
<hsqldb.version>2.4.0</hsqldb.version>
|
||||
<spock-core.version>1.1-groovy-2.4</spock-core.version>
|
||||
<gmavenplus-plugin.version>1.6</gmavenplus-plugin.version>
|
||||
<commons-lang3.version>3.9</commons-lang3.version>
|
||||
<java.version>1.8</java.version>
|
||||
<maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
|
||||
<logback.version>1.2.3</logback.version>
|
||||
<groovy.version>2.5.7</groovy.version>
|
||||
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
|
||||
</properties>
|
||||
</project>
|
||||
|
||||
|
|
|
|||
|
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@ -0,0 +1,25 @@
|
|||
package com.baeldung
|
||||
|
||||
import org.slf4j.LoggerFactory
|
||||
|
||||
class CalcMath {
|
||||
def log = LoggerFactory.getLogger(this.getClass())
|
||||
|
||||
def calcSum(x, y) {
|
||||
log.info "Executing $x + $y"
|
||||
x + y
|
||||
}
|
||||
|
||||
/**
|
||||
* example of method that in java would throw error at compile time
|
||||
* @param x
|
||||
* @param y
|
||||
* @return
|
||||
*/
|
||||
def calcSum2(x, y) {
|
||||
log.info "Executing $x + $y"
|
||||
// DANGER! This won't throw a compilation issue and fail only at runtime!!!
|
||||
calcSum3()
|
||||
log.info("Logging an undefined variable: $z")
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
package com.baeldung
|
||||
|
||||
def calcSum(x, y) {
|
||||
x + y
|
||||
}
|
||||
|
||||
def calcSum2(x, y) {
|
||||
// DANGER! The variable "log" may be undefined
|
||||
log.info "Executing $x + $y"
|
||||
// DANGER! This method doesn't exist!
|
||||
calcSum3()
|
||||
// DANGER! The logged variable "z" is undefined!
|
||||
log.info("Logging an undefined variable: $z")
|
||||
}
|
||||
|
||||
calcSum(1,5)
|
||||
|
|
@ -0,0 +1,120 @@
|
|||
package com.baeldung;
|
||||
|
||||
import groovy.lang.*;
|
||||
import groovy.util.GroovyScriptEngine;
|
||||
import groovy.util.ResourceException;
|
||||
import groovy.util.ScriptException;
|
||||
import org.codehaus.groovy.jsr223.GroovyScriptEngineFactory;
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
import javax.script.ScriptEngine;
|
||||
import java.io.File;
|
||||
import java.io.FileNotFoundException;
|
||||
import java.io.FileReader;
|
||||
import java.io.IOException;
|
||||
import java.net.MalformedURLException;
|
||||
import java.net.URL;
|
||||
|
||||
/**
|
||||
* Hello world!
|
||||
*
|
||||
*/
|
||||
public class MyJointCompilationApp {
|
||||
private final static Logger LOG = LoggerFactory.getLogger(MyJointCompilationApp.class);
|
||||
private final GroovyClassLoader loader;
|
||||
private final GroovyShell shell;
|
||||
private final GroovyScriptEngine engine;
|
||||
private final ScriptEngine engineFromFactory;
|
||||
|
||||
public MyJointCompilationApp() {
|
||||
loader = new GroovyClassLoader(this.getClass().getClassLoader());
|
||||
shell = new GroovyShell(loader, new Binding());
|
||||
|
||||
URL url = null;
|
||||
try {
|
||||
url = new File("src/main/groovy/com/baeldung/").toURI().toURL();
|
||||
} catch (MalformedURLException e) {
|
||||
LOG.error("Exception while creating url", e);
|
||||
}
|
||||
engine = new GroovyScriptEngine(new URL[] {url}, this.getClass().getClassLoader());
|
||||
engineFromFactory = new GroovyScriptEngineFactory().getScriptEngine();
|
||||
}
|
||||
|
||||
private void addWithCompiledClasses(int x, int y) {
|
||||
LOG.info("Executing {} + {}", x, y);
|
||||
Object result1 = new CalcScript().calcSum(x, y);
|
||||
LOG.info("Result of CalcScript.calcSum() method is {}", result1);
|
||||
|
||||
Object result2 = new CalcMath().calcSum(x, y);
|
||||
LOG.info("Result of CalcMath.calcSum() method is {}", result2);
|
||||
}
|
||||
|
||||
private void addWithGroovyShell(int x, int y) throws IOException {
|
||||
Script script = shell.parse(new File("src/main/groovy/com/baeldung/", "CalcScript.groovy"));
|
||||
LOG.info("Executing {} + {}", x, y);
|
||||
Object result = script.invokeMethod("calcSum", new Object[] { x, y });
|
||||
LOG.info("Result of CalcScript.calcSum() method is {}", result);
|
||||
}
|
||||
|
||||
private void addWithGroovyShellRun() throws IOException {
|
||||
Script script = shell.parse(new File("src/main/groovy/com/baeldung/", "CalcScript.groovy"));
|
||||
LOG.info("Executing script run method");
|
||||
Object result = script.run();
|
||||
LOG.info("Result of CalcScript.run() method is {}", result);
|
||||
}
|
||||
|
||||
private void addWithGroovyClassLoader(int x, int y) throws IllegalAccessException, InstantiationException, IOException {
|
||||
Class calcClass = loader.parseClass(
|
||||
new File("src/main/groovy/com/baeldung/", "CalcMath.groovy"));
|
||||
GroovyObject calc = (GroovyObject) calcClass.newInstance();
|
||||
Object result = calc.invokeMethod("calcSum", new Object[] { x + 14, y + 14 });
|
||||
LOG.info("Result of CalcMath.calcSum() method is {}", result);
|
||||
}
|
||||
|
||||
private void addWithGroovyScriptEngine(int x, int y) throws IllegalAccessException,
|
||||
InstantiationException, ResourceException, ScriptException {
|
||||
Class<GroovyObject> calcClass = engine.loadScriptByName("CalcMath.groovy");
|
||||
GroovyObject calc = calcClass.newInstance();
|
||||
//WARNING the following will throw a ClassCastException
|
||||
//((CalcMath)calc).calcSum(1,2);
|
||||
Object result = calc.invokeMethod("calcSum", new Object[] { x, y });
|
||||
LOG.info("Result of CalcMath.calcSum() method is {}", result);
|
||||
}
|
||||
|
||||
private void addWithEngineFactory(int x, int y) throws IllegalAccessException,
|
||||
InstantiationException, javax.script.ScriptException, FileNotFoundException {
|
||||
Class calcClass = (Class) engineFromFactory.eval(
|
||||
new FileReader(new File("src/main/groovy/com/baeldung/", "CalcMath.groovy")));
|
||||
GroovyObject calc = (GroovyObject) calcClass.newInstance();
|
||||
Object result = calc.invokeMethod("calcSum", new Object[] { x, y });
|
||||
LOG.info("Result of CalcMath.calcSum() method is {}", result);
|
||||
}
|
||||
|
||||
private void addWithStaticCompiledClasses() {
|
||||
LOG.info("Running the Groovy classes compiled statically...");
|
||||
addWithCompiledClasses(5, 10);
|
||||
|
||||
}
|
||||
|
||||
private void addWithDynamicCompiledClasses() throws IOException, IllegalAccessException, InstantiationException,
|
||||
ResourceException, ScriptException, javax.script.ScriptException {
|
||||
LOG.info("Invocation of a dynamic groovy script...");
|
||||
addWithGroovyShell(5, 10);
|
||||
LOG.info("Invocation of the run method of a dynamic groovy script...");
|
||||
addWithGroovyShellRun();
|
||||
LOG.info("Invocation of a dynamic groovy class loaded with GroovyClassLoader...");
|
||||
addWithGroovyClassLoader(10, 30);
|
||||
LOG.info("Invocation of a dynamic groovy class loaded with GroovyScriptEngine...");
|
||||
addWithGroovyScriptEngine(15, 0);
|
||||
LOG.info("Invocation of a dynamic groovy class loaded with GroovyScriptEngine JSR223...");
|
||||
addWithEngineFactory(5, 6);
|
||||
}
|
||||
|
||||
public static void main(String[] args) throws InstantiationException, IllegalAccessException,
|
||||
ResourceException, ScriptException, IOException, javax.script.ScriptException {
|
||||
MyJointCompilationApp myJointCompilationApp = new MyJointCompilationApp();
|
||||
LOG.info("Example of addition operation via Groovy scripts integration with Java.");
|
||||
myJointCompilationApp.addWithStaticCompiledClasses();
|
||||
myJointCompilationApp.addWithDynamicCompiledClasses();
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue