NullPointerException executing DELETE against table involved in DELETE CASCADE
referential constraint
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Key: DERBY-4043
URL: https://issues.apache.org/jira/browse/DERBY-4043
Project: Derby
Issue Type: Bug
Components: SQL
Affects Versions: 10.4.2.0
Environment: Windows XP
Use encrypted, soft-upgraded DB (from v10.3.2.1)
Reporter: Chip Hartney
I am incurring a NullPointerException in the DELETE CASCADE logic of v10.4.2.0.
After the error, the connection is lost.
The following is reproducible in my env in which I have a DB created under
v10.3.2.1 being accessed through IJ using the v10.4.2.0 libraries. (I have not
tested against other scenarios.) Note, however, that variations on this
sequence do not recreate the problem...such as leaving off the PK constraints
or adding data to the tables before creating the constraints or leaving out the
"Entry" record.
ij> CREATE TABLE "Catalog" ("Id" INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY
(START WITH 1, INCREMENT BY 1), "Code" VARCHAR(8) NOT NULL, "Name" VARCHAR(64)
NOT NULL, "SeqNo" INTEGER NOT NULL DEFAULT 0);
0 rows inserted/updated/deleted
ij> ALTER TABLE "Catalog" ADD CONSTRAINT "SQL171213084206750" PRIMARY KEY
("Id");
0 rows inserted/updated/deleted
ij> CREATE TABLE "Entry" ("Id" INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY
(START WITH 1, INCREMENT BY 1), "CatalogId" INTEGER NOT NULL, "ProductId"
INTEGER NOT NULL, "PageNo" INTEGER NOT NULL, "SeqNo" INTEGER NOT NULL);
0 rows inserted/updated/deleted
ij> ALTER TABLE "Entry" ADD CONSTRAINT "SQL171213084210150" PRIMARY KEY ("Id");
0 rows inserted/updated/deleted
ij> ALTER TABLE "Entry" ADD CONSTRAINT "Entry_FK_CatalogId1" FOREIGN KEY
("CatalogId") REFERENCES "Catalog" ("Id") ON DELETE CASCADE ON UPDATE NO ACTION;
0 rows inserted/updated/deleted
ij> insert into "Catalog" ("Code", "Name") values ('a', 'a');
1 row inserted/updated/deleted
ij> insert into "Entry" ("CatalogId", "ProductId", "PageNo", "SeqNo") values
(1, 1, 1, 1);
1 row inserted/updated/deleted
ij> delete from "Catalog";
ERROR XJ001: Java exception: ': java.lang.NullPointerException'.
ij> select * from "Catalog";
ERROR 08003: No current connection.
The stack trace from derby.log is:
2009-01-31 20:12:48.890 GMT Thread[main,5,main] (XID = 8949829), (SESSIONID =
0), (DATABASE = OrderEntryDB), (DRDAID = null), Cleanup action starting
2009-01-31 20:12:48.890 GMT Thread[main,5,main] (XID = 8949829), (SESSIONID =
0), (DATABASE = OrderEntryDB), (DRDAID = null), Failed Statement is: delete
from "Catalog"
java.lang.NullPointerException
at org.apache.derby.impl.sql.execute.NoRowsResultSetImpl.close(Unknown
Source)
at org.apache.derby.impl.sql.execute.DeleteResultSet.cleanUp(Unknown
Source)
at
org.apache.derby.impl.sql.execute.DeleteCascadeResultSet.cleanUp(Unknown Source)
at
org.apache.derby.impl.sql.execute.DeleteCascadeResultSet.cleanUp(Unknown Source)
at
org.apache.derby.impl.sql.execute.DeleteCascadeResultSet.open(Unknown Source)
at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown
Source)
at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown
Source)
at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
at org.apache.derby.impl.tools.ij.ij.executeImmediate(Unknown Source)
at org.apache.derby.impl.tools.ij.utilMain.doCatch(Unknown Source)
at org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(Unknown Source)
at org.apache.derby.impl.tools.ij.utilMain.go(Unknown Source)
at org.apache.derby.impl.tools.ij.Main.go(Unknown Source)
at org.apache.derby.impl.tools.ij.Main.mainCore(Unknown Source)
at org.apache.derby.impl.tools.ij.Main.main(Unknown Source)
at org.apache.derby.tools.ij.main(Unknown Source)
2009-01-31 20:12:48.890 GMT Thread[main,5,main] Equally severe exception raised
during cleanup (ignored) null
java.lang.NullPointerException
at org.apache.derby.impl.sql.execute.NoRowsResultSetImpl.close(Unknown
Source)
at org.apache.derby.impl.sql.execute.DeleteResultSet.cleanUp(Unknown
Source)
at
org.apache.derby.impl.sql.execute.DeleteCascadeResultSet.cleanUp(Unknown Source)
at
org.apache.derby.impl.sql.execute.DeleteCascadeResultSet.cleanUp(Unknown Source)
at
org.apache.derby.impl.sql.conn.GenericStatementContext.cleanupOnError(Unknown
Source)
at
org.apache.derby.iapi.services.context.ContextManager.cleanupOnError(Unknown
Source)
at
org.apache.derby.impl.jdbc.TransactionResourceImpl.cleanupOnError(Unknown
Source)
at
org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(Unknown
Source)
at org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown
Source)
at org.apache.derby.impl.jdbc.ConnectionChild.handleException(Unknown
Source)
at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown
Source)
at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
at org.apache.derby.impl.tools.ij.ij.executeImmediate(Unknown Source)
at org.apache.derby.impl.tools.ij.utilMain.doCatch(Unknown Source)
at org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(Unknown Source)
at org.apache.derby.impl.tools.ij.utilMain.go(Unknown Source)
at org.apache.derby.impl.tools.ij.Main.go(Unknown Source)
at org.apache.derby.impl.tools.ij.Main.mainCore(Unknown Source)
at org.apache.derby.impl.tools.ij.Main.main(Unknown Source)
at org.apache.derby.tools.ij.main(Unknown Source)
Cleanup action completed
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