Package org.apache.commons.dbutils.wrappers

Class StringTrimmedResultSet

java.lang.Object

org.apache.commons.dbutils.wrappers.StringTrimmedResultSet

All Implemented Interfaces:

InvocationHandler

public class StringTrimmedResultSet
extends Object
implements InvocationHandler

Wraps a ResultSet to trim strings returned by the getString() and getObject() methods.

Usage Example: This example shows how to decorate ResultSets so processing continues as normal but all Strings are trimmed before being returned from the ResultSet.

 ResultSet resultSet = // somehow get a ResultSet;

 // Substitute wrapped ResultSet with additional behavior for real ResultSet
 resultSet = StringTrimmedResultSet.wrap(resultSet);

 // Pass wrapped ResultSet to processor
 List list = new BasicRowProcessor().toBeanList(resultSet);
 

Constructor Summary

Constructors

Constructor	Description
StringTrimmedResultSet(ResultSet resultSet)	Constructs a new instance of StringTrimmedResultSet to wrap the specified ResultSet.

Method Summary

Modifier and Type	Method	Description
Object	invoke(Object proxy, Method method, Object[] args)	Intercept calls to the getString() and getObject() methods and trim any Strings before they're returned.
static ResultSet	wrap(ResultSet resultSet)	Wraps the ResultSet in an instance of this class.

Methods inherited from class java.lang.Object

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

Constructor Detail

StringTrimmedResultSet

public StringTrimmedResultSet(ResultSet resultSet)

Constructs a new instance of StringTrimmedResultSet to wrap the specified ResultSet.

Parameters:

resultSet - ResultSet to wrap

Method Detail

wrap

public static ResultSet wrap(ResultSet resultSet)

Wraps the ResultSet in an instance of this class. This is equivalent to:

 ProxyFactory.instance().createResultSet(new StringTrimmedResultSet(resultSet));
 

Parameters:

resultSet - The ResultSet to wrap.

Returns:

wrapped ResultSet

invoke

public Object invoke(Object proxy,
                     Method method,
                     Object[] args)
              throws Throwable

Intercept calls to the getString() and getObject() methods and trim any Strings before they're returned.

Specified by:

invoke in interface InvocationHandler

Parameters:

proxy - Not used; all method calls go to the internal result set

method - The method to invoke on the result set

args - The arguments to pass to the result set

Returns:

string trimmed result

Throws:

Throwable - error

See Also:

InvocationHandler.invoke(Object, java.lang.reflect.Method, Object[])