com.solarmetric.kodo.impl.jdbc.query
Interface MethodListener

All Superinterfaces:

FilterListener

public interface MethodListener

extends FilterListener

Implementors of this interface are defining listeners which listen for ext:TAG on query filters to append to the generated where clause.

An example listener might be one for the SQL: "upper (firstnamex) like 'argument'

Here would be a class to accomplish this which would listen for:
firstname.ext:upperLike ("argument")

public class UpperLikeListener implements MethodListener
{
public String getTag () {return "upperLike";}

public String transform (String column, String argument)
{
return "UPPER (" + column + ") LIKE '" + argument + "'";
}
}


Method Summary

String

transform(String column, String argument) The primary method which transforms a given column and argument into SQL.

Methods inherited from interface com.solarmetric.kodo.query.FilterListener

getTag

Method Detail

transform

public String transform(String column,
                        String argument)

The primary method which transforms a given column and argument into SQL. Note this may be called multiple times per execution depending upon class hierarchy and table strucure

Parameters:

column - The SQL column name that correlates to the field being operated upon

argument - the argument passed into the filter

Returns:

SQL representing the listener's action