org.springmodules.validation.valang.parser
Class DefaultVisitor

java.lang.Object
  org.springmodules.validation.valang.parser.DefaultVisitor

All Implemented Interfaces:

BeanFactoryAware, ApplicationContextAware, ApplicationEventPublisherAware, MessageSourceAware, ResourceLoaderAware, ValangVisitor

public class DefaultVisitor
extends Object
implements ValangVisitor, BeanFactoryAware, ApplicationContextAware, ResourceLoaderAware, MessageSourceAware, ApplicationEventPublisherAware

Allows registration of custom functions. Custom functions can overwrite default functions.

Default functions are:

• len, length, size
• upper
• lower
• !

Since:

Apr 23, 2005

Author:

Steven Devijver

Constructor Summary

DefaultVisitor()
Constructor

Method Summary

DefaultDateParser	getDateParser() Gets date parser.
Function	getFunction(String name, Function[] arguments, int line, int column) Get a function based on the function name and arguments.
Function	getFunction(String className, String propertyName) Get bytecode generation function.
org.apache.commons.collections.Predicate	getPredicate(Function leftFunction, Operator operator, Function rightFunction, int line, int column) Gets predicate.
ValangVisitor	getVisitor() Gets visitor.
void	setApplicationContext(ApplicationContext applicationContext) Implementation of ApplicationContextAware.
void	setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher) Implementation of ApplicationEventPublisherAware.
void	setBeanFactory(BeanFactory beanFactory) Implementation of BeanFactoryAware.
void	setMessageSource(MessageSource messageSource) Implementation of MessageSourceAware.
void	setResourceLoader(ResourceLoader resourceLoader) Implementation of ResourceLoaderAware.
void	setVisitor(ValangVisitor visitor) Register a custom visitor to look up custom functions.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultVisitor

public DefaultVisitor()

Constructor

Method Detail

getFunction

public Function getFunction(String name,
                            Function[] arguments,
                            int line,
                            int column)

Get a function based on the function name and arguments.

Specified by:

getFunction in interface ValangVisitor

getFunction

public Function getFunction(String className,
                            String propertyName)

Get bytecode generation function.

Parameters:

className - Name of the Class to generated a Function to retrieve a property.

propertyName - The name of the property to retrieve a value from in the function. For example, expects 'message' and will call getMessage().

Returns:

Function Bytecode generated Function based on the class and property name.

getVisitor

public ValangVisitor getVisitor()

Gets visitor.

setVisitor

public void setVisitor(ValangVisitor visitor)

Register a custom visitor to look up custom functions. Lookup of functions will first be delegated to this visitor. If no function has been returned (null) lookup will be handled by DefaultVisitor.

Parameters:

visitor - The custom visitor.

getPredicate

public org.apache.commons.collections.Predicate getPredicate(Function leftFunction,
                                                             Operator operator,
                                                             Function rightFunction,
                                                             int line,
                                                             int column)

Gets predicate.

Parameters:

leftFunction - Left comparison Function.

operator - Operation for comparison.

rightFunction - Right comparison Function.

line - Line number of parsed expression.

column - Column number of parsed expression.

Returns:

Predicate Comparison predicate based on input.

getDateParser

public DefaultDateParser getDateParser()

Gets date parser.

setBeanFactory

public void setBeanFactory(BeanFactory beanFactory)
                    throws BeansException

Implementation of BeanFactoryAware.

Specified by:

setBeanFactory in interface BeanFactoryAware

Throws:

BeansException

setApplicationContext

public void setApplicationContext(ApplicationContext applicationContext)
                           throws BeansException

Implementation of ApplicationContextAware.

Specified by:

setApplicationContext in interface ApplicationContextAware

Throws:

BeansException

setResourceLoader

public void setResourceLoader(ResourceLoader resourceLoader)

Implementation of ResourceLoaderAware.

Specified by:

setResourceLoader in interface ResourceLoaderAware

setMessageSource

public void setMessageSource(MessageSource messageSource)

Implementation of MessageSourceAware.

Specified by:

setMessageSource in interface MessageSourceAware

setApplicationEventPublisher

public void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher)

Implementation of ApplicationEventPublisherAware.

Specified by:

setApplicationEventPublisher in interface ApplicationEventPublisherAware