[DERBY-4904] Plan exporter doesn't work if XPLAIN schema has special characters

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 10.7.1.1
• Fix Version/s: 10.7.1.1, 10.8.1.2
• Component/s: Tools
• Assignee: Knut Anders Hatlen
• Reporter: Knut Anders Hatlen
• Created: 15/Nov/10 13:21
• Updated: 19/Apr/11 12:38
• Resolved: 16/Nov/10 12:19

Description

If the XPLAIN schema contains lowercase characters (e.g, CALL SYSCS_UTIL.SYSCS_SET_XPLAIN_SCHEMA('my_stats_schema')), the plan exporter will fail with

ERROR 42Y07: Schema 'MY_STATS_SCHEMA' does not exist
at org.apache.derby.iapi.error.StandardException.newException(StandardException.java:286)
at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.getSchemaDescriptor(DataDictionaryImpl.java:1528)
(...)
at org.apache.derby.impl.jdbc.EmbedStatement.executeQuery(EmbedStatement.java:153)
at org.apache.derby.impl.tools.planexporter.AccessDatabase.noOfNodes(AccessDatabase.java:417)
at org.apache.derby.impl.tools.planexporter.AccessDatabase.initializeDataArray(AccessDatabase.java:323)
at org.apache.derby.tools.PlanExporter.main(PlanExporter.java:59)

If the schema contains spaces or special characters, like single-quotes or double-quotes, it will get a syntax error instead:

ij> CALL SYSCS_UTIL.SYSCS_SET_RUNTIMESTATISTICS(1);
ij> CALL SYSCS_UTIL.SYSCS_SET_XPLAIN_SCHEMA('my "quoted" schema');
ij> SELECT * FROM SYSIBM.SYSDUMMY1;

$ java org.apache.derby.tools.PlanExporter jdbc:derby:db 'my "quoted" schema' 6f2b430a-012c-4ec6-f4a1-00000d4d4fe5 -xml plan.xml -html plan.html
ERROR 42X01: Syntax error: Encountered "schema" at line 1, column 34.
at org.apache.derby.iapi.error.StandardException.newException(StandardException.java:286)
at org.apache.derby.impl.sql.compile.ParserImpl.parseStatement(ParserImpl.java:155)
(...)
at org.apache.derby.impl.jdbc.EmbedStatement.executeQuery(EmbedStatement.java:153)
at org.apache.derby.impl.tools.planexporter.AccessDatabase.noOfNodes(AccessDatabase.java:417)
at org.apache.derby.impl.tools.planexporter.AccessDatabase.initializeDataArray(AccessDatabase.java:323)
at org.apache.derby.tools.PlanExporter.main(PlanExporter.java:59)