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https://issues.apache.org/jira/browse/CAMEL-7803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14135410#comment-14135410
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ASF GitHub Bot commented on CAMEL-7803:
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Github user nathanwray closed the pull request at:
https://github.com/apache/camel/pull/265
> DefaultJdbcPrepareStatementStrategy Iterator fails on null value inserts
> ------------------------------------------------------------------------
>
> Key: CAMEL-7803
> URL: https://issues.apache.org/jira/browse/CAMEL-7803
> Project: Camel
> Issue Type: Bug
> Components: camel-jdbc
> Affects Versions: 2.13.2
> Reporter: Nathan Wray
> Assignee: Willem Jiang
> Fix For: 2.12.5, 2.13.3, 2.14.1, 2.15.0
>
> Attachments: 7803-patch.txt
>
>
> The iterator returned by createPopulateIterator in
> DefaultJdbcPrepareStatementStrategy incorrectly uses a next value of "null"
> to identify when it has run out of parameters. This fails when the parameter
> map intentionally contains a name with a null value, which is the case when
> some columns in an insert should be set to null. The attached pull request
> adds an explicit preFetch flag and relies on the done flag, avoiding the
> incorrect overloading of (next==null) to indicate completion.
> The iterator reports "hasNext() == false" when it encounters a map value of
> null. This happens when using the map header JDBC_PARAMETERS =
> "CamelJdbcParameters" to insert null values with a prepared statement. The
> Iterator ends prematurely when it reaches a parameter name with a null value.
>
> For example, passing in a map where the 3rd parameter of 19 has a value of
> null causes the following exception to be thrown:
> java.sql.SQLException: Number of parameters mismatch. Expected: 19, was:2
> at
> org.apache.camel.component.jdbc.DefaultJdbcPrepareStatementStrategy.populateStatement(DefaultJdbcPrepareStatementStrategy.java:137)
> at
> org.apache.camel.component.jdbc.JdbcProducer.doCreateAndExecuteSqlStatementWithHeaders(JdbcProducer.java:133)
> at
> org.apache.camel.component.jdbc.JdbcProducer.createAndExecuteSqlStatement(JdbcProducer.java:116)
> at
> org.apache.camel.component.jdbc.JdbcProducer.processingSqlBySettingAutoCommit(JdbcProducer.java:85)
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