Trouble enabling lambda support

[srhaque]

I'm using JasperStudio 6.6.0 on Linux. I'm having trouble getting lambdas to be recognised. I tried adding:

-Dorg.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8-Dorg.eclipse.jdt.core.compiler.compliance=1.8-Dorg.eclipse.jdt.core.compiler.source=1.8[/code]

to my .ini file, and have confirmed these option are present in the output of "ps -eaf". However, I still get errors like this:

net.sf.jasperreports.engine.JRException: Errors were encountered when compiling report expressions class file:1 error(s):1. syntax error (expression#3) at column 18 in line  false).map(x -> x.getKey()).getClass().    at net.sf.jasperreports.engine.design.JRAbstractCompiler.compileReport(JRAbstractCompiler.java:206)    at net.sf.jasperreports.eclipse.builder.JasperReportCompiler.compileReport(JasperReportCompiler.java:286)    at com.jaspersoft.studio.editor.preview.view.control.ReportController.compileJasperDesign(ReportController.java:467)    at com.jaspersoft.studio.editor.preview.view.control.ReportController.access$8(ReportController.java:452)    at com.jaspersoft.studio.editor.preview.view.control.ReportController$1.run(ReportController.java:376)    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)[/code]

Any hints would be most welcome.

Thanks, Shaheed

[srhaque]

Based on this thread I looked for what version of the org.eclipse.jdt.core.compiler I have nad it appears to be this one:

/opt/tibco/TIB_js-studiocomm_6.6.0/dropins/eclipse/plugins/org.eclipse.jdt.core.compiler.batch.nl_it_4.2.0.v20130724060447.jar[/code]

Is this 4.2.0.v20130724060447.jar recent enough? If not, I'd appreciate some guidance on how to swap a newer one in. I know how to spell Maven, but I'm not au fait with it beyond that.

[srhaque]

I'm trying this again with 6.9.0, but still having problems.

• The source code and error is now:

net.sf.jasperreports.engine.JRException: Errors were encountered when compiling report expressions class file:
1 error(s):
1. syntax error at column 124 in line
StreamSupport.stream(Spliterators.spliteratorUnknownSize(field_pay_graph_results.getValue().elements(), 0), false).map(x -> x.toString()).allMatch(x -> x.equals("0.0"))
.
    at net.sf.jasperreports.engine.design.JRAbstractCompiler.compileReport(JRAbstractCompiler.java:206)
    at net.sf.jasperreports.eclipse.builder.JasperReportCompiler.compileReport(JasperReportCompiler.java:288)
    at com.jaspersoft.studio.editor.preview.view.control.ReportController.compileJasperDesign(ReportController.java:481)
    at com.jaspersoft.studio.editor.preview.view.control.ReportController.access$8(ReportController.java:466)
    at com.jaspersoft.studio.editor.preview.view.control.ReportController$1.run(ReportController.java:384)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)

• The column number points right to the "->" in the expanded source.
• I have edited the .ini file, so my command looks like this:

/opt/tibco/TIB_js-studiocomm_6.9.0//features/jre.linux.gtk.x86_64.feature_1.8.0.u151/jre/bin/java -Xms128m -Xmx1024m -XX:+CMSClassUnloadingEnabled -XX:+UseConcMarkSweepGC -Dfile.encoding=UTF-8 -Djava.net.preferIPv4Stack=true -Dorg.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8 -Dorg.eclipse.jdt.core.compiler.compliance=1.8 -Dorg.eclipse.jdt.core.compiler.source=1.8 -jar /opt/tibco/TIB_js-studiocomm_6.9.0//plugins/org.eclipse.equinox.launcher_1.5.300.v20190213-1655.jar -os linux -ws gtk -arch x86_64 -showsplash -launcher /opt/tibco/TIB_js-studiocomm_6.9.0/Jaspersoft Studio -name Jaspersoft Studio --launcher.library /opt/tibco/TIB_js-studiocomm_6.9.0//plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.1000.v20190125-2016/eclipse_1801.so -startup /opt/tibco/TIB_js-studiocomm_6.9.0//plugins/org.eclipse.equinox.launcher_1.5.300.v20190213-1655.jar --launcher.overrideVmargs -exitdata d78003 -data @noDefault -vm /opt/tibco/TIB_js-studiocomm_6.9.0//features/jre.linux.gtk.x86_64.feature_1.8.0.u151/jre/bin/java -vmargs -Xms128m -Xmx1024m -XX:+CMSClassUnloadingEnabled -XX:+UseConcMarkSweepGC -Dfile.encoding=UTF-8 -Djava.net.preferIPv4Stack=true -Dorg.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8 -Dorg.eclipse.jdt.core.compiler.compliance=1.8 -Dorg.eclipse.jdt.core.compiler.source=1.8 -jar /opt/tibco/TIB_js-studiocomm_6.9.0//plugins/org.eclipse.equinox.launcher_1.5.300.v20190213-1655.jar

• I see the compiler version is

/opt/tibco/TIB_js-studiocomm_6.9.0/dropins/eclipse/plugins/org.eclipse.jdt.core.compiler.batch.nl_it_4.2.0.v20130724060447.jar

I don't see an ecj.jar in the distribution, but can download one from Maven. But I've no idea what to do with it to have it take effect.

Help much appreciated,

 

Thanks.