I am trying to inspect the contents of a moderately large Scala map of objects in IntelliJ while debugging an application. I enter the following in the "Evaluate" dialog: prices.get.keys.toList.filter(k => k.startsWith("GC")), where prices is Future[Map[String, SomeObject]]. I have tried directly on the Iterable without the toList collection with the same results.
I get the following exception:
Error during generated code invocation:
com.intellij.debugger.engine.evaluation.EvaluateException: Method threw 'java.lang.NoSuchMethodError' exception. The top of the stack trace is simply the line on which I have the breakpoint.
Anyone else run into this? If so, is there a workaround?
The stack trace is as follows:
c.p.p.e.u.ClassUnderTest$$anonfun$4$GeneratedEvaluatorClass$10$1.invoke(FileToCompile1993.scala:85)
c.p.p.e.u.ClassUnderTest$$anonfun$4.apply(ClassUnderTest.scala:81)
c.p.p.e.u.ClassUnderTest$$anonfun$4.apply(ClassUnderTest.scala:76)
scala.collection.immutable.HashSet$HashSet1.filter0(HashSet.scala:313)
scala.collection.immutable.HashSet$HashTrieSet.filter0(HashSet.scala:929)
scala.collection.immutable.HashSet$HashTrieSet.filter0(HashSet.scala:929)
scala.collection.immutable.HashSet.filter(HashSet.scala:167)
scala.collection.immutable.HashSet.filter(HashSet.scala:35)
c.p.p.e.u.ClassTest.get(ClassTest.scala:76)
c.p.p.e.u.ClassTest.$$anonfun$1.apply$mcV$sp(ClassTest.scala:35)
c.p.p.e.u.ClassTest$$anonfun$1.apply(ClassTest.scala:22)
c.p.p.e.u.ClassTest$$anonfun$1.apply(ClassTest.scala:22)
org.scalatest.Transformer$$anonfun$apply$1.apply$mcV$sp(Transformer.scala:22)
org.scalatest.OutcomeOf$class.outcomeOf(OutcomeOf.scala:85)
org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104)
org.scalatest.Transformer.apply(Transformer.scala:22)
org.scalatest.Transformer.apply(Transformer.scala:20)
org.scalatest.FlatSpecLike$$anon$1.apply(FlatSpecLike.scala:1647)
org.scalatest.Suite$class.withFixture(Suite.scala:1122)
org.scalatest.FlatSpec.withFixture(FlatSpec.scala:1683)
org.scalatest.FlatSpecLike$class.invokeWithFixture$1(FlatSpecLike.scala:1644)
org.scalatest.FlatSpecLike$$anonfun$runTest$1.apply(FlatSpecLike.scala:1656)
org.scalatest.FlatSpecLike$$anonfun$runTest$1.apply(FlatSpecLike.scala:1656)
org.scalatest.SuperEngine.runTestImpl(Engine.scala:306)
org.scalatest.FlatSpecLike$class.runTest(FlatSpecLike.scala:1656)
org.scalatest.FlatSpec.runTest(FlatSpec.scala:1683)
org.scalatest.FlatSpecLike$$anonfun$runTests$1.apply(FlatSpecLike.scala:1714)
org.scalatest.FlatSpecLike$$anonfun$runTests$1.apply(FlatSpecLike.scala:1714)
org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:413)
org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:401)
scala.collection.immutable.List.foreach(List.scala:381)
org.scalatest.SuperEngine.traverseSubNodes$1(Engine.scala:401)
org.scalatest.SuperEngine.org$scalatest$SuperEngine$$runTestsInBranch(Engine.scala:390)
org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:427)
org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:401)
scala.collection.immutable.List.foreach(List.scala:381)
org.scalatest.SuperEngine.traverseSubNodes$1(Engine.scala:401)
org.scalatest.SuperEngine.org$scalatest$SuperEngine$$runTestsInBranch(Engine.scala:396)
org.scalatest.SuperEngine.runTestsImpl(Engine.scala:483)
org.scalatest.FlatSpecLike$class.runTests(FlatSpecLike.scala:1714)
org.scalatest.FlatSpec.runTests(FlatSpec.scala:1683)
org.scalatest.Suite$class.run(Suite.scala:1424)
org.scalatest.FlatSpec.org$scalatest$FlatSpecLike$$super$run(FlatSpec.scala:1683)
org.scalatest.FlatSpecLike$$anonfun$run$1.apply(FlatSpecLike.scala:1760)
org.scalatest.FlatSpecLike$$anonfun$run$1.apply(FlatSpecLike.scala:1760)
org.scalatest.SuperEngine.runImpl(Engine.scala:545)
org.scalatest.FlatSpecLike$class.run(FlatSpecLike.scala:1760)
org.scalatest.FlatSpec.run(FlatSpec.scala:1683)
org.scalatest.tools.SuiteRunner.run(SuiteRunner.scala:55)
org.scalatest.tools.Runner$$anonfun$doRunRunRunDaDoRunRun$3.apply(Runner.scala:2563)
org.scalatest.tools.Runner$$anonfun$doRunRunRunDaDoRunRun$3.apply(Runner.scala:2557)
scala.collection.immutable.List.foreach(List.scala:381)
org.scalatest.tools.Runner$.doRunRunRunDaDoRunRun(Runner.scala:2557)
org.scalatest.tools.Runner$$anonfun$runOptionallyWithPassFailReporter$2.apply(Runner.scala:1044)
org.scalatest.tools.Runner$$anonfun$runOptionallyWithPassFailReporter$2.apply(Runner.scala:1043)
org.scalatest.tools.Runner$.withClassLoaderAndDispatchReporter(Runner.scala:2722)
org.scalatest.tools.Runner$.runOptionallyWithPassFailReporter(Runner.scala:1043)
org.scalatest.tools.Runner$.run(Runner.scala:883)
org.scalatest.tools.Runner.run(Runner.scala)
org.jetbrains.plugins.scala.testingSupport.scalaTest.ScalaTestRunner.runScalaTest2(ScalaTestRunner.java:131)
org.jetbrains.plugins.scala.testingSupport.scalaTest.ScalaTestRunner.main(ScalaTestRunner.java:28)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:498)
com.intellij.rt.execution.CommandLineWrapper.main(CommandLineWrapper.java:67)
I have updated the Scala plugin to the latest release 2018.2.9 and am on the latest release of IntelliJ IDEA (from the About dialog):
IntelliJ IDEA 2018.2 (Ultimate Edition)
Build #IU-182.3684.101, built on July 24, 2018
Scala debugger has some issues with the evaluation of complex expressions (with lambdas, anonymous classes, classes declaration, etc). One of them https://youtrack.jetbrains.com/issue/SCL-14194 looks a cause of your problem because the debugger stopped in a lambda c.p.p.e.u.ClassUnderTest$$anonfun$4.apply(ClassUnderTest.scala:81) and the expression contains a lambda function.
The reason is IDEA compiles the expression before evaluation and it does not always capture a context properly. As a workaround, you can try to evaluate the expression from other debugger stops, for example, a body of a usual method.
Related
I'm able to write my dataframe as a hive table this way:
mydf.write.format("parquet").saveAsTable("mydb.mytable")
But when I'm trying to append the same data in the same table using "append" mode like this:
mydf.write.mode("append").format("parquet").saveAsTable("mydb.mytable")
I get an error:
py4j.protocol.Py4JJavaError: An error occurred while calling o106.saveAsTable.
: java.util.NoSuchElementException: next on empty iterator
at scala.collection.Iterator$$anon$2.next(Iterator.scala:39)
at scala.collection.Iterator$$anon$2.next(Iterator.scala:37)
at scala.collection.IndexedSeqLike$Elements.next(IndexedSeqLike.scala:63)
at scala.collection.IterableLike$class.head(IterableLike.scala:107)
at scala.collection.mutable.ArrayBuffer.scala$collection$IndexedSeqOptimized$$super$head(ArrayBuffer.scala:48)
at scala.collection.IndexedSeqOptimized$class.head(IndexedSeqOptimized.scala:126)
at scala.collection.mutable.ArrayBuffer.head(ArrayBuffer.scala:48)
at org.apache.spark.sql.execution.datasources.DataSource$$anonfun$18.apply(DataSource.scala:466)
at org.apache.spark.sql.execution.datasources.DataSource$$anonfun$18.apply(DataSource.scala:463)
at scala.Option.map(Option.scala:146)
at org.apache.spark.sql.execution.datasources.DataSource.planForWritingFileFormat(DataSource.scala:463)
at org.apache.spark.sql.execution.datasources.DataSource.writeAndRead(DataSource.scala:516)
at org.apache.spark.sql.execution.command.CreateDataSourceTableAsSelectCommand.saveDataIntoTable(createDataSourceTables.scala:216)
at org.apache.spark.sql.execution.command.CreateDataSourceTableAsSelectCommand.run(createDataSourceTables.scala:166)
at org.apache.spark.sql.execution.command.DataWritingCommandExec.sideEffectResult$lzycompute(commands.scala:104)
at org.apache.spark.sql.execution.command.DataWritingCommandExec.sideEffectResult(commands.scala:102)
at org.apache.spark.sql.execution.command.DataWritingCommandExec.doExecute(commands.scala:122)
at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$1.apply(SparkPlan.scala:131)
at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$1.apply(SparkPlan.scala:127)
at org.apache.spark.sql.execution.SparkPlan$$anonfun$executeQuery$1.apply(SparkPlan.scala:155)
at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151)
at org.apache.spark.sql.execution.SparkPlan.executeQuery(SparkPlan.scala:152)
at org.apache.spark.sql.execution.SparkPlan.execute(SparkPlan.scala:127)
at org.apache.spark.sql.execution.QueryExecution.toRdd$lzycompute(QueryExecution.scala:80)
at org.apache.spark.sql.execution.QueryExecution.toRdd(QueryExecution.scala:80)
at org.apache.spark.sql.DataFrameWriter$$anonfun$runCommand$1.apply(DataFrameWriter.scala:656)
at org.apache.spark.sql.DataFrameWriter$$anonfun$runCommand$1.apply(DataFrameWriter.scala:656)
at org.apache.spark.sql.execution.SQLExecution$.withNewExecutionId(SQLExecution.scala:77)
at org.apache.spark.sql.DataFrameWriter.runCommand(DataFrameWriter.scala:656)
at org.apache.spark.sql.DataFrameWriter.createTable(DataFrameWriter.scala:458)
at org.apache.spark.sql.DataFrameWriter.saveAsTable(DataFrameWriter.scala:437)
at org.apache.spark.sql.DataFrameWriter.saveAsTable(DataFrameWriter.scala:393)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
at py4j.Gateway.invoke(Gateway.java:282)
at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
at py4j.commands.CallCommand.execute(CallCommand.java:79)
at py4j.GatewayConnection.run(GatewayConnection.java:238)
at java.lang.Thread.run(Thread.java:748)
No idea why I'm getting this. Please help
Thanks
It's worth to make sure the table has been created before appending new records by a simple SQL code:
sqlContext.sql("SELECT * FROM mydb.mytable")
In addition, there is no need to set the file format as it has been defined already. So if you update your code to the following line it should work smoothly.
mydf.write.mode("append").saveAsTable("mydb.mytable")
Update:
I tested the same scenario without getting an error message. These are the steps I took:
Code and result screenshot
You could have access to the Google colab notebook that I just created for this test.
I hope this help
I had the same problem and I solved it by setting the "header" option to "true".
Example:
df.write.format("orc").option("header", "true").mode("append").insertInto("db.table")
Hope it helps someone in the future
Trying to play with scala in IDEA with scala plug-in:
My HelloWorld object:
object HelloWorld {
def main(args: Array[String]) {
println("Hello")
}
}
And sometimes I getting next error when pressing 'Run HelloWorld' from context menu.
scalac: Error: Could not find an output directory for /Users/username/Work/src/sandbox/src/HelloWorld.scala in List((/Users/username/work/src/sandbox/src,/Users/username/work/src/sandbox/out/production/sandbox))
scala.reflect.internal.FatalError: Could not find an output directory for /Users/username/Work/src/sandbox/src/HelloWorld.scala in List((/Users/username
/work/src/sandbox/src,/Users/username/work/src/sandbox/out/production/sandbox))
at scala.tools.nsc.settings.MutableSettings$OutputDirs.outputDirFor(MutableSettings.scala:303)
at scala.tools.nsc.backend.jvm.BytecodeWriters$class.outputDirectory(BytecodeWriters.scala:26)
at scala.tools.nsc.backend.jvm.BytecodeWriters$class.scala$tools$nsc$backend$jvm$BytecodeWriters$$getFile(BytecodeWriters.scala:37)
at scala.tools.nsc.backend.jvm.BytecodeWriters$ClassBytecodeWriter$class.writeClass(BytecodeWriters.scala:89)
at scala.tools.nsc.backend.jvm.GenASM$AsmPhase$$anon$4.writeClass(GenASM.scala:67)
at scala.tools.nsc.backend.jvm.GenASM$JBuilder.writeIfNotTooBig(GenASM.scala:458)
at scala.tools.nsc.backend.jvm.GenASM$JMirrorBuilder.genMirrorClass(GenASM.scala:2954)
at scala.tools.nsc.backend.jvm.GenASM$AsmPhase.run(GenASM.scala:113)
at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1583)
at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1557)
at scala.tools.nsc.Global$Run.compileSources(Global.scala:1553)
at scala.tools.nsc.Global$Run.compile(Global.scala:1662)
at xsbt.CachedCompiler0.run(CompilerInterface.scala:126)
at xsbt.CachedCompiler0.run(CompilerInterface.scala:102)
at xsbt.CompilerInterface.run(CompilerInterface.scala:27)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at sbt.compiler.AnalyzingCompiler.call(AnalyzingCompiler.scala:102)
at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:48)
at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:41)
at org.jetbrains.jps.incremental.scala.local.IdeaIncrementalCompiler.compile(IdeaIncrementalCompiler.scala:26)
at org.jetbrains.jps.incremental.scala.local.LocalServer.compile(LocalServer.scala:25)
at org.jetbrains.jps.incremental.scala.remote.Main$.make(Main.scala:58)
at org.jetbrains.jps.incremental.scala.remote.Main$.nailMain(Main.scala:21)
at org.jetbrains.jps.incremental.scala.remote.Main.nailMain(Main.scala)
at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.martiansoftware.nailgun.NGSession.run(NGSession.java:319)
This error very annoying because to fix it I need to restart IDEA, clean/compile my project, add/remove launch configuration few times. Also command line from the error properly can be executed from the terminal manually.
Looking at the error comment:
Could not find an output directory for:
/Users/username/Work/src/sandbox/src/HelloWorld.scala
in
/Users/username/work/src/sandbox/src
/Users/username/work/src/sandbox/out/production/sandbox
Depending on the environment you're running the IntelliJ in the upper/lower case difference matters. Please make sure your user.home property is set correctly.
Answer from Norbert Radyk didn't apply to me. Paths were correct in my case. I had to delete target/scala-2.11/test-classes folder in order to compel Intellij to recompile the test class. A bit of a pain though as it will work as long as I don't have to modify the test itself. So not really a solution but a bit of a hack in case you really need to debug a test.
I have a problem when running JUnit Plug-in tests in Eclipse 4.3 and 4.2 and possible other versions. This worked in version 3.6 so I do not know what has changed.
The test are written using JUnit 4 and using parameterized tests (though I have tested with normal tests and the problem is the same). The test cases are written in YAML format and inflated at runtime using SnakeYAML.
When running the test as a normal JUnit test everything works fine, but when running the test as a JUnit Plug-in tests the test fails since it can no longer inflate objects from Yaml using SnakeYAML.
This is the code that reads test cases from YAML
public static ArrayList<StartsWithCommentTestCase> readTests(String filename) {
// set up how Java types match to the YAML file
Constructor testCaseConstructor = new Constructor(StartsWithCommentTestCase.class);
TypeDescription testCaseDesc = new TypeDescription(StartsWithCommentTestCase.class);
testCaseConstructor.addTypeDescription(testCaseDesc);
Yaml yamlParser = new Yaml(testCaseConstructor);
// read all the documents in the test file
String tests = TestUtils.readFile(filename);
ArrayList<StartsWithCommentTestCase> testCases = new ArrayList<StartsWithCommentTestCase>();
for (Object testCase : yamlParser.loadAll(new StringReader(tests))) {
testCases.add((StartsWithCommentTestCase) testCase);
}
return testCases;
}
#Test
public void bla(){
List<StartsWithCommentTestCase> tests = readTests(TEST_FILES_DIR + "starts-with-comment.yaml");
for(StartsWithCommentTestCase test : tests){
boolean actual = ToggleCommentHandler.startsWithComment( test.getLine() );
assertEquals( test.getName(), test.getExpected(), actual );
}
}
And this is the stacktrace that is received when running as a JUnit Plug-in test
Can't construct a java object for tag:yaml.org,2002:pde.test.tests.StartsWithCommentTestCase;exception=Class not found: pde.test.tests.StartsWithCommentTestCase
in "<reader>", line 4, column 1:
name: Empty line
^
at org.yaml.snakeyaml.constructor.Constructor$ConstructYamlObject.construct(Constructor.java:325)
at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:181)
at org.yaml.snakeyaml.constructor.BaseConstructor.constructDocument(BaseConstructor.java:140)
at org.yaml.snakeyaml.constructor.BaseConstructor.getData(BaseConstructor.java:109)
at org.yaml.snakeyaml.Yaml$1.next(Yaml.java:317)
at pde.test.tests.StartsWithCommentTest.readTests(StartsWithCommentTest.java:86)
at pde.test.tests.StartsWithCommentTest.bla(StartsWithCommentTest.java:47)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.pde.internal.junit.runtime.RemotePluginTestRunner.main(RemotePluginTestRunner.java:62)
at org.eclipse.pde.internal.junit.runtime.CoreTestApplication.run(CoreTestApplication.java:23)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.internal.app.EclipseAppContainer.callMethodWithException(EclipseAppContainer.java:587)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:198)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
at org.eclipse.equinox.launcher.Main.main(Main.java:1426)
Caused by: org.yaml.snakeyaml.error.YAMLException: Class not found: pde.test.tests.StartsWithCommentTestCase
at org.yaml.snakeyaml.constructor.Constructor.getClassForNode(Constructor.java:625)
at org.yaml.snakeyaml.constructor.Constructor$ConstructYamlObject.getConstructor(Constructor.java:313)
at org.yaml.snakeyaml.constructor.Constructor$ConstructYamlObject.construct(Constructor.java:323)
... 49 more
The strange thing (for me at least) is that I can make a StartsWithCommentTestCase object with
new StartsWithCommentTestCase()
without any problem also when running as a plugin test. In otherwords the class is avaiable at runtime, but for some reason not available to SnakeYAML.
Any pointers on this would be very helpful :)
Edit 1
The first lines of the YAML file:
#all the lines must have newlines in them since newlines are returned
#by Document.get()
---
name: Empty line
line:
expected: false
---
name: "Line where first character is #"
line: "#
"
expected: true
Edit 2
Added more code to the sample.
It looks like the Junit plugin don't know how to read the SnakeYAML code. Are you sure the class-loader of SnakeYAML is correctly initialized when you run the tests through the plug in?
And how does the mentioned line 4 look in your YAML code? Is it empty?
Maybe the junit plugin uses another jar dependency than your ordinary setup. Which maven binary/path does the junit plugin use? Is this the same as your ordinary one? If you have different m2-configurations or even different repos there will be strange issues.
I found out that this is because I had moved the SnakeYAML dependency to another plugin. SnakeYAML was then part of another plugin with a different class loader than the test plugin.
The solution was to add the following to the META-INF/MANIFEST.MF file in the dependeny plugin
Eclipse-BuddyPolicy: registered
And the following to the META-INF/MANIFEST.MF file in the test plugin
Eclipse-RegisterBuddy: <symbolic name of the dependency plugin>
Now on to see if I can move the SnakeYAML dependency back into a lib/ folder or similar.
I'm using Scala 2.9.2.
Run Scala and test a simple code, this code is… OK:
...
val title = "Hashing file (%s)..." format sizeToStr(file.length)
But I couldn't understand what is what, while I put that code into a simple app, compiling OK, at runtime it throws this one:
java.lang.NoSuchMethodError: scala.Predef$.augmentString(Ljava/lang/String;)Lscala/collection/immutable/StringOps;
at group.pals.penguin.app.shasher.Shasher$.calcHash(shasher.scala:119)
at group.pals.penguin.app.shasher.Shasher$.main(shasher.scala:76)
at group.pals.penguin.app.shasher.Shasher.main(shasher.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at scala.tools.nsc.util.ScalaClassLoader$$anonfun$run$1.apply(ScalaClassLoader.scala:71)
at scala.tools.nsc.util.ScalaClassLoader$class.asContext(ScalaClassLoader.scala:31)
at scala.tools.nsc.util.ScalaClassLoader$URLClassLoader.asContext(ScalaClassLoader.scala:139)
at scala.tools.nsc.util.ScalaClassLoader$class.run(ScalaClassLoader.scala:71)
at scala.tools.nsc.util.ScalaClassLoader$URLClassLoader.run(ScalaClassLoader.scala:139)
at scala.tools.nsc.CommonRunner$class.run(ObjectRunner.scala:28)
at scala.tools.nsc.JarRunner$.run(MainGenericRunner.scala:16)
at scala.tools.nsc.CommonRunner$class.runAndCatch(ObjectRunner.scala:35)
at scala.tools.nsc.JarRunner$.runAndCatch(MainGenericRunner.scala:16)
at scala.tools.nsc.JarRunner$.runJar(MainGenericRunner.scala:28)
at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:78)
at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:96)
at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:105)
at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
Could you please help me out? Thanks.
It seems like you're compiling against a different version of the standard library than you're using at runtime.
I want to add a custom command to my cheat sheet, I had make it work well, except when open the plugin.xml with Plug-in Manifest Editor, there is an error.
Here are the steps I used to implement the function:
1: Define custom command in plugin.xml.
<extension
point="org.eclipse.ui.commands">
<category
id="com.ting.commands.category"
name="Custom Category">
</category>
<command
categoryId="com.ting.commands.category"
defaultHandler="com.ting.commands.ExampleCommandHandler"
description="Example Command"
id="com.ting.commands.exampleCommand"
name="Custom commands">
</command>
2: Add command to cheat sheet item.
<item
title="Example cheat sheet item">
<description>
Example item description
</description>
<command
required="false"
serialization="com.ting.commands.exampleCommand"/>
</item>
Error message:
Message : Failed to deserialize command: com.ting.commands.ExampleCommandHandler
Exception Stack Trace:
org.eclipse.core.commands.common.NotDefinedException: Cannot get the parameters from an undefined command. com.ting.commands.ExampleCommandHandler
at org.eclipse.core.commands.Command.getParameters(Command.java:759)
at org.eclipse.core.commands.CommandManager.deserialize(CommandManager.java:464)
at org.eclipse.ui.internal.commands.CommandService.deserialize(CommandService.java:112)
at org.eclipse.pde.internal.ua.ui.editor.cheatsheet.simple.details.SimpleCSCommandDetails.getParameterizedCommand(SimpleCSCommandDetails.java:447)
at org.eclipse.pde.internal.ua.ui.editor.cheatsheet.simple.details.SimpleCSCommandDetails.getParameterizedCommand(SimpleCSCommandDetails.java:469)
at org.eclipse.pde.internal.ua.ui.editor.cheatsheet.simple.details.SimpleCSCommandDetails.updateFields(SimpleCSCommandDetails.java:286)
at org.eclipse.pde.internal.ua.ui.editor.cheatsheet.simple.details.SimpleCSItemDetails.updateFields(SimpleCSItemDetails.java:277)
at org.eclipse.pde.internal.ua.ui.editor.cheatsheet.simple.details.SimpleCSItemDetails.selectionChanged(SimpleCSItemDetails.java:368)
at org.eclipse.ui.forms.DetailsPart$1.run(DetailsPart.java:274)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.forms.DetailsPart.showPage(DetailsPart.java:261)
at org.eclipse.ui.forms.DetailsPart.update(DetailsPart.java:234)
at org.eclipse.ui.forms.DetailsPart.selectionChanged(DetailsPart.java:219)
at org.eclipse.ui.forms.ManagedForm.fireSelectionChanged(ManagedForm.java:148)
at org.eclipse.pde.internal.ui.editor.TreeSection$PartAdapter.selectionChanged(TreeSection.java:32)
at org.eclipse.pde.internal.ui.parts.TreePart$1.selectionChanged(TreePart.java:45)
at org.eclipse.jface.viewers.Viewer$2.run(Viewer.java:162)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.runtime.Platform.run(Platform.java:888)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:48)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:160)
at org.eclipse.jface.viewers.StructuredViewer.updateSelection(StructuredViewer.java:2132)
at org.eclipse.jface.viewers.StructuredViewer.setSelection(StructuredViewer.java:1669)
at org.eclipse.jface.viewers.TreeViewer.setSelection(TreeViewer.java:1124)
at org.eclipse.pde.internal.ua.ui.editor.cheatsheet.simple.SimpleCSMasterTreeSection.setFormInput(SimpleCSMasterTreeSection.java:1233)
at org.eclipse.pde.internal.ua.ui.editor.cheatsheet.simple.SimpleCSDefinitionPage.setActive(SimpleCSDefinitionPage.java:207)
at org.eclipse.ui.forms.editor.FormEditor.pageChange(FormEditor.java:480)
at org.eclipse.pde.internal.ui.editor.PDEFormEditor.pageChange(PDEFormEditor.java:262)
at org.eclipse.ui.part.MultiPageEditorPart$2.widgetSelected(MultiPageEditorPart.java:291)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:228)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1176)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1200)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1185)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1025)
at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3256)
at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:2045)
at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:323)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1176)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3493)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3112)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:592)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
at org.eclipse.equinox.launcher.Main.main(Main.java:1287)
I assume (Cheat Sheet?) editor can't find the command because the defining plugin is not part of your target platform. If you export the plugin and add to your development platform, it should work fine.