# Class TrapException

java.lang.Object
org.apache.tomcat.jdbc.pool.JdbcInterceptor
org.apache.tomcat.jdbc.pool.TrapException

All Implemented Interfaces:
  `InvocationHandler`

public class TrapException extends JdbcInterceptor
Interceptor that traps any unhandled exception types and throws an exception that has been declared by the method called, or throw an SQLException if it is declared. If the caught exception is not declared, and the method doesn't throw SQLException, then this interceptor will throw a RuntimeException

## Field Summary

### Fields inherited from class JdbcInterceptor

`CLOSE_VAL, EQUALS_VAL, GETCONNECTION_VAL, HASHCODE_VAL, ISCLOSED_VAL, ISVALID_VAL, ISWRAPPERFOR_VAL, properties, TOSTRING_VAL, UNWRAP_VAL`

## Constructor Summary

Constructors
Constructor
Description
`TrapException()`

## Method Summary

Modifier and Type
Method
Description
`Object`
`invoke(Object proxy, Method method, Object[] args)`
Gets invoked each time an operation on `Connection` is invoked.
`boolean`
`isDeclaredException(Method m, Class<?> clazz)`
`void`
`reset(ConnectionPool parent, PooledConnection con)`
no-op for this interceptor. no state is stored.

### Methods inherited from class JdbcInterceptor

`compare, compare, disconnected, getNext, getProperties, isUseEquals, poolClosed, poolStarted, setNext, setProperties, setUseEquals`

### Methods inherited from class Object

`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

## Constructor Details

### TrapException

public TrapException()

## Method Details

### invoke

public Object invoke(Object proxy, Method method, Object[] args) throws Throwable
Description copied from class: `JdbcInterceptor`
Gets invoked each time an operation on `Connection` is invoked.

Specified by:
  `invoke` in interface `InvocationHandler`
Overrides:
  `invoke` in class `JdbcInterceptor`
Throws:
  `Throwable`

### isDeclaredException

public boolean isDeclaredException(Method m, Class<?> clazz)

### reset

public void reset(ConnectionPool parent, PooledConnection con)
no-op for this interceptor. no state is stored.

Specified by:
  `reset` in class `JdbcInterceptor`
Parameters:
  `parent` - - the connection pool owning the connection
  `con` - - the pooled connection