[#CONJ-972] possible java.lang.ClassCastException when executing prepared statement

java.lang.ClassCastException: class java.util.LinkedHashMap$Entry cannot be cast to class java.util.HashMap$TreeNode (java.util.LinkedHashMap$Entry and java.util.HashMap$TreeNode are in module java.base of loader 'bootstrap')

	at java.base/java.util.HashMap$TreeNode.moveRootToFront(HashMap.java:1986)

	at java.base/java.util.HashMap$TreeNode.treeify(HashMap.java:2102)

	at java.base/java.util.HashMap.treeifyBin(HashMap.java:770)

	at java.base/java.util.HashMap.putVal(HashMap.java:642)

	at java.base/java.util.HashMap.put(HashMap.java:610)

	at org.mariadb.jdbc.util.ClientParser.parameterParts(ClientParser.java:160)

	at org.mariadb.jdbc.ClientPreparedStatement.<init>(ClientPreparedStatement.java:68)

	at org.mariadb.jdbc.Connection.prepareInternal(Connection.java:156)

	at org.mariadb.jdbc.Connection.prepareStatement(Connection.java:112)

This is a concurency problem. a solution could be to use a ConcurrentHashMap, but after benchmarking the change, the solution would make it slower compare to not using cache at all, avoiding synchronized calls.
So solution is to remove entirely (like 2.7)

[CONJ-972] possible java.lang.ClassCastException when executing prepared statement Created: 2022-05-19 Updated: 2022-10-10 Resolved: 2022-05-19
Status:	Closed
Project:	MariaDB Connector/J
Component/s:	Other
Affects Version/s:	None
Fix Version/s:	3.0.5

[CONJ-972] possible java.lang.ClassCastException when executing prepared statement Created: 2022-05-19 Updated: 2022-10-10 Resolved: 2022-05-19