Package org.apache.commons.dbutils.wrappers

Class StringTrimmedResultSet

  • All Implemented Interfaces:
    java.lang.reflect.InvocationHandler
    public class StringTrimmedResultSet
extends java.lang.Object
implements java.lang.reflect.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 rs = // somehow get a ResultSet;

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

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

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private static ProxyFactory factory
      The factory to create proxies with.
      private java.sql.ResultSet rs
      The wrapped result.

    • Constructor Summary

      Constructors 
      Constructor Description
      StringTrimmedResultSet​(java.sql.ResultSet rs)
      Constructs a new instance of StringTrimmedResultSet to wrap the specified ResultSet.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.Object invoke​(java.lang.Object proxy, java.lang.reflect.Method method, java.lang.Object[] args)
      Intercept calls to the getString() and getObject() methods and trim any Strings before they're returned.
      static java.sql.ResultSet wrap​(java.sql.ResultSet rs)
      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

    • Field Detail

      • factory

        private static final ProxyFactory factory
        The factory to create proxies with.

      • rs

        private final java.sql.ResultSet rs
        The wrapped result.

    • Constructor Detail

      • StringTrimmedResultSet

        public StringTrimmedResultSet​(java.sql.ResultSet rs)
        Constructs a new instance of StringTrimmedResultSet to wrap the specified ResultSet.
        Parameters:
        rs - ResultSet to wrap

    • Method Detail

      • wrap

        public static java.sql.ResultSet wrap​(java.sql.ResultSet rs)
        Wraps the ResultSet in an instance of this class. This is equivalent to: 
         ProxyFactory.instance().createResultSet(new StringTrimmedResultSet(rs));
        Parameters:
        rs - The ResultSet to wrap.
        Returns:
        wrapped ResultSet

      • invoke

        public java.lang.Object invoke​(java.lang.Object proxy,
                               java.lang.reflect.Method method,
                               java.lang.Object[] args)
                        throws java.lang.Throwable
        Intercept calls to the getString() and getObject() methods and trim any Strings before they're returned.
        Specified by:
        invoke in interface java.lang.reflect.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:
        java.lang.Throwable - error
        See Also:
        InvocationHandler.invoke(java.lang.Object, java.lang.reflect.Method, java.lang.Object[])