Out of memory while exporting data

[claeis]

with --diableValidation the export works

with validation the export fails:

java.lang.OutOfMemoryError: GC overhead limit exceeded
at java.util.Arrays.copyOfRange(Arrays.java:3664)
at java.lang.String.<init>(String.java:207)
at java.lang.StringBuilder.toString(StringBuilder.java:407)
at ch.interlis.iox_j.validator.Validator.getScopedName(Validator.java:660)
at ch.interlis.iox_j.validator.Validator.validateAttrValue(Validator.java:3319)
at ch.interlis.iox_j.validator.Validator.validateObject(Validator.java:3052)
at ch.interlis.iox_j.validator.Validator.validate(Validator.java:351)
at ch.ehi.ili2db.toxtf.TransferToXtf.dumpObjHelper(TransferToXtf.java:1133)
at ch.ehi.ili2db.toxtf.TransferToXtf.dumpObject(TransferToXtf.java:1070)
at ch.ehi.ili2db.toxtf.TransferToXtf.doBasket(TransferToXtf.java:554)
at ch.ehi.ili2db.toxtf.TransferToXtf.doit(TransferToXtf.java:287)
at ch.ehi.ili2db.base.Ili2db.transferToXtf(Ili2db.java:2300)
at ch.ehi.ili2db.base.Ili2db.runExport(Ili2db.java:1720)
at ch.ehi.ili2db.base.Ili2db.run(Ili2db.java:225)
at ch.ehi.ili2db.AbstractMain.domain(AbstractMain.java:555)
at ch.ehi.ili2pg.PgMain.main(PgMain.java:70)

[claeis]

There is no memory leak.

If there is enough heap space (5GB), the export with validation works.

I found two places (one in the validation code and one in the export code), where I can replace the heap based implementation with a file based one.

[claeis]

After the improvements: