question: public void validateParameters ( StatementBlock sb ) throws LanguageException { for ( String varName : _otherParams . keySet ( ) ) if ( ! ( varName . equals ( CLASS_NAME ) || varName . equals ( EXEC_TYPE ) || varName . equals ( CONFIG_FILE ) ) ) { LOG . warn ( printWarningLocation ( ) + "External function specifies undefined attribute type '" + varName + "'." ) ; } if ( ! _otherParams . containsKey ( CLASS_NAME ) ) { sb . raiseValidateError ( "External function does not specify the required attribute '" + CLASS_NAME + "'." , false ) ; } else if ( _otherParams . get ( CLASS_NAME ) == null ) { sb . raiseValidateError ( "External function specifies empty '" + CLASS_NAME + "'." , false ) ; } if ( _otherParams . containsKey ( EXEC_TYPE ) ) { String execType = _otherParams . get ( EXEC_TYPE ) ; if ( ! ( execType . equals ( FILE_BASED ) || execType . equals ( IN_MEMORY ) ) ) { sb . raiseValidateError ( "External function specifies invalid value for (optional) attribute '" + EXEC_TYPE + "' (valid values: " + FILE_BASED + "," + IN_MEMORY + ")." , false ) ; } } else { _otherParams . put ( EXEC_TYPE , DEFAULT_EXEC_TYPE ) ; } }
target:  Validates all attributes and attribute values.