Description:
Reopening ticket 115249 as it has been reproduced on 8.4.0
------------------
When you use cacheCallableStmts a second call to the same procedure can fail under the following conditions
- There is an OUT parameter
- the number of parameters defined is not equal to the amount of bound parameters, eg. on of the parameters is hardcoded
- You make a second call
The error you get is: `java.sql.SQLException: Parameter number 2 is not an OUT parameter`
From an initial investigation it looks to go wrong here:
https://github.com/mysql/mysql-connector-j/blob/release/8.x/src/main/user-impl/java/com/my...
Where in the first constructor it takes the length of the paramMap and the second it takes the number of params returned by the schema.
How to repeat:
Have a call like
```java
@Select(
"{CALL my_proc(" +
"0," +
"#{inField,mode=IN,jdbcType=VARCHAR}," +
"#{outField,mode=OUT,jdbcType=VARCHAR}" +
")}"
)
@Options(statementType = StatementType.CALLABLE)
void myProc(Map<String, Object> paramMap);
```
(where my_proc has two in fields and one out field, body of proc does not seem to matter)
Call this function twice:
```java
@Test
public void testProc() {
final Map<String, Object> paramMap1 = new HashMap<>();
paramMap1.put("inField", "my_field");
paramMap1.put("outField", "");
assertDoesNotThrow(() -> myDao.myProc(paramMap1));
final Map<String, Object> paramMap2 = new HashMap<>();
paramMap2.put("inField", "my_field2");
paramMap2.put("outField", "");
assertDoesNotThrow(() -> myDao.myProc(paramMap2));
}
```
If you defined the first param also in the map there is no error
Suggested fix:
When getting the param info from cache here: https://github.com/mysql/mysql-connector-j/blob/1c3f5c149e0bfe31c7fbeb24e2d260cd890972c4/s...
It should set the correct number of parameters
