Problem compiling Jasper with Lambda

[andyrozman]

Hi ! I have problem compiling jasper files that contain lambda... I use 2.6 version of plugin, I excluded your jasperreports dependencies, I added dependency to latest 6.11.0.

I also added this as additional properties:

1.8 1.8 1.8

But it seems to be ignored... I was able to compile the same files in my Java class without any problems...

[andyrozman]

OK found solution:

     <plugin>
            <groupId>com.alexnederlof</groupId>
            <artifactId>jasperreports-plugin</artifactId>
            <version>2.3</version>
            <executions>
                <execution>
                    <phase>process-sources</phase>
                    <goals>
                        <goal>jasper</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <!-- These are the default configurations: -->
                <compiler>net.sf.jasperreports.engine.design.JRJdtCompiler</compiler>
                <sourceDirectory>src/main/resources/invoice/</sourceDirectory>
                <outputDirectory>${project.build.directory}/jasper</outputDirectory>
                <outputFileExt>.jasper</outputFileExt>
                <xmlValidation>true</xmlValidation>
                <verbose>false</verbose>
                <numberOfThreads>4</numberOfThreads>
                <failOnMissingSourceDirectory>true</failOnMissingSourceDirectory>
               <sourceScanner>org.codehaus.plexus.compiler.util.scan.StaleSourceScanner</sourceScanner>

                <additionalProperties>
                    <org.eclipse.jdt.core.compiler.codegen.targetPlatform>1.8</org.eclipse.jdt.core.compiler.codegen.targetPlatform>
                    <org.eclipse.jdt.core.compiler.compliance>1.8</org.eclipse.jdt.core.compiler.compliance>
                    <org.eclipse.jdt.core.compiler.source>1.8</org.eclipse.jdt.core.compiler.source>
                </additionalProperties>
            </configuration>
            <dependencies>
                <dependency>
                    <groupId>com.alexnederlof</groupId>
                    <artifactId>jasperreports-plugin</artifactId>
                    <version>2.6</version>
                    <exclusions>
                        <exclusion>
                            <groupId>net.sf.jasperreports</groupId>
                            <artifactId>jasperreports</artifactId>
                        </exclusion>
                        <exclusion>
                            <groupId>org.eclipse.jdt.core.compiler</groupId>
                            <artifactId>ecj</artifactId>
                        </exclusion>
                        <exclusion>
                            <groupId>org.eclipse.jdt</groupId>
                            <artifactId>ecj</artifactId>
                        </exclusion>
                    </exclusions>
                </dependency>
                <dependency>
                    <groupId>org.eclipse.jdt.core.compiler</groupId>
                    <artifactId>ecj</artifactId>
                    <version>4.4.2</version>
                </dependency>
            </dependencies>

        </plugin>

You need to exclude all other broken compilers, and add dependency to your own (4.4.2 is used for current versions), and 3.3.1 is stricly java 7, and 4.3.1 was broken.