Error: Could not find or load main class sqlline.SqlLine

[lucacerone]

Hi, this is probably a mistake on my side but I couldn't understand how to install/run properly sqlline I fear.

I downloaded the source zip file for the 1.3.0 release. I unzipped it in a folder and from a terminal and within the sqlline folder I run:

mvn package

Some of the tests failed, but I can't understand why:

Running sqlline.SqlLineTest
Tests run: 3, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.245 sec - in sqlline.SqlLineTest
Running sqlline.SqlLineArgsTest
java.lang.IllegalArgumentException: No current connection
	at sqlline.SqlLine.getConnection(SqlLine.java:388)
	at sqlline.Commands.nativesql(Commands.java:350)
	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 sqlline.ReflectiveCommandHandler.execute(ReflectiveCommandHandler.java:38)
	at sqlline.SqlLine.dispatch(SqlLine.java:791)
	at sqlline.SqlLine.runCommands(SqlLine.java:1706)
	at sqlline.SqlLineArgsTest.testNPE(SqlLineArgsTest.java:557)
	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 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at mockit.integration.junit4.internal.JUnit4TestRunnerDecorator.executeTestMethod(JUnit4TestRunnerDecorator.java:162)
	at mockit.integration.junit4.internal.JUnit4TestRunnerDecorator.invokeExplosively(JUnit4TestRunnerDecorator.java:71)
	at mockit.integration.junit4.internal.MockFrameworkMethod.invokeExplosively(MockFrameworkMethod.java:37)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:264)
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:153)
	at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:124)
	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:200)
	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:153)
	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
[ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ][ Hit "enter" for more ("q" to exit) ]java.io.FileNotFoundException: /tmp/sqllinenegative7589320866135718635temp (No such file or directory)
	at java.io.FileInputStream.open0(Native Method)
	at java.io.FileInputStream.open(FileInputStream.java:195)
	at java.io.FileInputStream.<init>(FileInputStream.java:138)
	at java.io.FileInputStream.<init>(FileInputStream.java:93)
	at java.io.FileReader.<init>(FileReader.java:58)
	at sqlline.Commands.run(Commands.java:1267)
	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 sqlline.ReflectiveCommandHandler.execute(ReflectiveCommandHandler.java:38)
	at sqlline.SqlLine.dispatch(SqlLine.java:791)
	at sqlline.SqlLine.initArgs(SqlLine.java:595)
	at sqlline.SqlLine.begin(SqlLine.java:643)
	at sqlline.SqlLineArgsTest.run(SqlLineArgsTest.java:78)
	at sqlline.SqlLineArgsTest.runScript(SqlLineArgsTest.java:102)
	at sqlline.SqlLineArgsTest.runScript(SqlLineArgsTest.java:85)
	at sqlline.SqlLineArgsTest.testNegativeScriptFile(SqlLineArgsTest.java:493)
	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 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at mockit.integration.junit4.internal.JUnit4TestRunnerDecorator.executeTestMethod(JUnit4TestRunnerDecorator.java:162)
	at mockit.integration.junit4.internal.JUnit4TestRunnerDecorator.invokeExplosively(JUnit4TestRunnerDecorator.java:71)
	at mockit.integration.junit4.internal.MockFrameworkMethod.invokeExplosively(MockFrameworkMethod.java:37)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:264)
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:153)
	at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:124)
	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:200)
	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:153)
	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
Tests run: 22, Failures: 0, Errors: 0, Skipped: 1, Time elapsed: 3.02 sec - in sqlline.SqlLineArgsTest

Results :

Tests run: 25, Failures: 0, Errors: 0, Skipped: 1

[INFO] 
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ sqlline ---
[INFO] 
[INFO] --- maven-javadoc-plugin:2.9.1:jar (attach-javadocs) @ sqlline ---
[INFO] 

Despite the failure I tried to go in the bin directory and run

./sqlline

which produced the error

Error: Could not find or load main class sqlline.SqlLine

I also tried to not build the package and run the sqlline executable that comes in the bin folder.

Could you please help me to figure out what I am doing wrong? Could it be because there is no jdbc driver in the folder? if that's the problem, I have several JDBC drivers already installed in some directory, is there any way I can make them "visible" to sqlline regardless of the directory where I am running sqlline?

Thanks for the help and apologies for the silly questions.
Luca

[julianhyde]

Your tests were successful. I just downloaded the 1.3 tar file and did mvn package and got the same results. Note that it says Tests run: 25, Failures: 0, Errors: 0, Skipped: 1, that is, no test errors or failures.

Sorry the output looks a bit scary; we are executing negative tests, to make sure that sqlline does the right thing even if it can't connect to the database.

I get the same problem with the sqlline command. I edited it as follows:

BINPATH=$(dirname $0)
exec java -cp $BINPATH/../target/sqlline-1.3.0-jar-with-dependencies.jar sqlline.SqlLine "$@"

and it worked (except that it printed "??" as the version).

Most projects that use sqlline have a launcher script that pull in sqlline and other dependencies via maven; see e.g. https://github.com/apache/calcite/blob/master/sqlline.

[lucacerone]

Thanks a lot for your answer Julian!

I understood the part regarding the tests, I am sorry not to have figured it myself.

About sqlline, if I understood correctly I have to modify the script then?
What about the drivers? Does sqlline always have to be in the same directory with the tars of a JDBC driver? or I can pass somehow the directory where they are stores? or should I make sure the CLASSPATH variables contains the directory where JDBC drivers are stored?

Thanks again for your help with this!

[julianhyde]

Yes, you need to modify the script. This is typical for Java programs. Put the drivers after the -cp argument in the command, separated by colons (or semi-colons on windows). Or you can put them in the CLASSPATH variable, but most people prefer the -cp argument these days.

[lucacerone]

Many thanks @julianhyde !

[julianhyde]

Fixed in 2b403a6; thanks for the PR, @snuyanzin!

[elenac5]

Your tests were successful. I just downloaded the 1.3 tar file and did mvn package and got the same results. Note that it says Tests run: 25, Failures: 0, Errors: 0, Skipped: 1, that is, no test errors or failures.

Sorry the output looks a bit scary; we are executing negative tests, to make sure that sqlline does the right thing even if it can't connect to the database.

I get the same problem with the sqlline command. I edited it as follows:

BINPATH=$(dirname $0)
exec java -cp $BINPATH/../target/sqlline-1.3.0-jar-with-dependencies.jar sqlline.SqlLine "$@"

and it worked (except that it printed "??" as the version).

Most projects that use sqlline have a launcher script that pull in sqlline and other dependencies via maven; see e.g. https://github.com/apache/calcite/blob/master/sqlline.

Where can I make these changes??

[snuyanzin]

if you use sqlline 1.5.0+ then all changes are already there and you can use scripts bin/sqlline, bin\sqlline.bat. Otherwise you could make changes in these scripts or in a script you use to run sqlline

[elenac5]

Yes, I have these scripts. But should I simply add those 2 lines of code?

[snuyanzin]

you can just simply update them in a way it was done in PR #100 (direct link to file diff https://github.com/julianhyde/sqlline/pull/100/files).

[elenac5]

Here is the code of sqlline.bat file: https://codeshare.io/5OoeBg
And here of sqlline file: https://codeshare.io/5QqdQW

I don't know where I can add those modifications.

[snuyanzin]

it looks like you use Drill's customizations of these files (https://github.com/apache/drill/blob/e9c7f51e8a6b4c4be95fc3aef05b89596414e98d/distribution/src/resources/sqlline).
It is better to ask people from Drill in that case.
Could you please raise an a question in Drill's jira https://issues.apache.org/jira/projects/DRILL ?

cc @arina-ielchiieva , @vvysotskyi