Description of problem:

When you execute "query --what=group" and there's nested group defined, following exception is thrown:

java.lang.NullPointerException
	at org.ovirt.engine.extension.aaa.jdbc.core.Schema.putNextGroup(Schema.java:362)
	at org.ovirt.engine.extension.aaa.jdbc.core.Schema.access$100(Schema.java:56)
	at org.ovirt.engine.extension.aaa.jdbc.core.Schema$searchPageResolver.nextPage(Schema.java:268)
	at org.ovirt.engine.extension.aaa.jdbc.core.Schema$searchPageResolver.resolve(Schema.java:243)
	at org.ovirt.engine.extension.aaa.jdbc.core.Schema$searchPageResolver.resolve(Schema.java:236)
	at org.ovirt.engine.extension.aaa.jdbc.core.datasource.Sql$Cursor.resolve(Sql.java:432)
	at org.ovirt.engine.extension.aaa.jdbc.core.Schema.get(Schema.java:766)
	at org.ovirt.engine.extension.aaa.jdbc.core.Authorization.executeQuery(Authorization.java:53)
	at org.ovirt.engine.extension.aaa.jdbc.core.Authorization.getResults(Authorization.java:76)
	at org.ovirt.engine.extension.aaa.jdbc.binding.cli.Cli$26.invoke(Cli.java:1050)
	at org.ovirt.engine.extension.aaa.jdbc.binding.cli.Cli$Command.invoke(Cli.java:95)
	at org.ovirt.engine.extension.aaa.jdbc.binding.cli.Cli$23.invoke(Cli.java:941)
	at org.ovirt.engine.extension.aaa.jdbc.binding.cli.Cli$Command.invoke(Cli.java:95)
	at org.ovirt.engine.extension.aaa.jdbc.binding.cli.Cli$Command.invoke(Cli.java:120)
	at org.ovirt.engine.extension.aaa.jdbc.binding.cli.Cli.main(Cli.java:1137)
	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:497)
	at org.jboss.modules.Module.run(Module.java:312)
	at org.jboss.modules.Main.main(Main.java:460)


Without nested groups query command works fine.

Version-Release number of selected component (if applicable):

1.0.0

How reproducible:

100%

Steps to Reproduce:
1. Create groups g1 and g2
2. Add group g2 as a member of g1
3. Execute
    ovirt-aaa-jdbc-tool query --what=group

Actual results:

Exception is thrown

Expected results:

Query displays all existing groups.

Additional info: