# Class StatementFinalizer

java.lang.Object
org.apache.tomcat.jdbc.pool.JdbcInterceptor
org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor
org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer

All Implemented Interfaces:
  `InvocationHandler`

public class StatementFinalizer extends AbstractCreateStatementInterceptor
Keeps track of statements associated with a connection and invokes close upon `Connection.close()` Useful for applications that don't close the associated statements after being done with a connection.

- ## Nested Class Summary

  Nested Classes
  Modifier and Type
  Class
  Description
  `protected class`
  `StatementFinalizer.StatementEntry`

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `protected List<StatementFinalizer.StatementEntry>`
  `statements`

  ### Fields inherited from class AbstractCreateStatementInterceptor

  `constructors, CREATE_STATEMENT, CREATE_STATEMENT_IDX, EXECUTE, EXECUTE_BATCH, EXECUTE_QUERY, EXECUTE_TYPES, EXECUTE_UPDATE, GET_GENERATED_KEYS, GET_RESULTSET, GET_STATEMENT, PREPARE_CALL, PREPARE_CALL_IDX, PREPARE_STATEMENT, PREPARE_STATEMENT_IDX, RESULTSET_IDX, STATEMENT_TYPE_COUNT, STATEMENT_TYPES`

  ### 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
  `StatementFinalizer()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `closeInvoked()`
  Method invoked when the operation `Connection.close()` is invoked.
  `Object`
  `createStatement(Object proxy, Method method, Object[] args, Object statement, long time)`
  This method will be invoked after a successful statement creation.
  `void`
  `reset(ConnectionPool parent, PooledConnection con)`
  no-op for this interceptor. no state is stored.
  `void`
  `setProperties(Map<String, PoolProperties.InterceptorProperty> properties)`
  Called during the creation of an interceptor The properties can be set during the configuration of an interceptor Override this method to perform type casts between string values and object properties

  ### Methods inherited from class AbstractCreateStatementInterceptor

  `getConstructor, invoke, isExecute, isStatement, process`

  ### Methods inherited from class JdbcInterceptor

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

  ### Methods inherited from class Object

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

- ## Field Details

  - ### statements

    protected List<StatementFinalizer.StatementEntry> statements

- ## Constructor Details

  - ### StatementFinalizer

    public StatementFinalizer()

- ## Method Details

  - ### createStatement

    public Object createStatement(Object proxy, Method method, Object[] args, Object statement, long time)
    Description copied from class: `AbstractCreateStatementInterceptor`
    This method will be invoked after a successful statement creation. This method can choose to return a wrapper around the statement or return the statement itself. If this method returns a wrapper then it should return a wrapper object that implements one of the following interfaces. `Statement`, `PreparedStatement` or `CallableStatement`
    Specified by:
      `createStatement` in class `AbstractCreateStatementInterceptor`
    Parameters:
      `proxy` - the actual proxy object
      `method` - the method that was called. It will be one of the methods defined in `AbstractCreateStatementInterceptor.STATEMENT_TYPES`
      `args` - the arguments to the method
      `statement` - the statement that the underlying connection created
      `time` - Elapsed time
    Returns:
      a `Statement` object

  - ### closeInvoked

    public void closeInvoked()
    Description copied from class: `AbstractCreateStatementInterceptor`
    Method invoked when the operation `Connection.close()` is invoked.
    Specified by:
      `closeInvoked` in class `AbstractCreateStatementInterceptor`

  - ### setProperties

    public void setProperties(Map<String, PoolProperties.InterceptorProperty> properties)
    Description copied from class: `JdbcInterceptor`
    Called during the creation of an interceptor The properties can be set during the configuration of an interceptor Override this method to perform type casts between string values and object properties
    Overrides:
      `setProperties` in class `JdbcInterceptor`
    Parameters:
      `properties` - The properties

  - ### reset

    public void reset(ConnectionPool parent, PooledConnection con)
    Description copied from class: `AbstractCreateStatementInterceptor`
    no-op for this interceptor. no state is stored.
    Overrides:
      `reset` in class `AbstractCreateStatementInterceptor`
    Parameters:
      `parent` - - the connection pool owning the connection
      `con` - - the pooled connection