org.codehaus.groovy.grails.web.mapping
Class RegexUrlMapping

java.lang.Object
  org.codehaus.groovy.grails.web.mapping.AbstractUrlMapping
      org.codehaus.groovy.grails.web.mapping.RegexUrlMapping

All Implemented Interfaces:

Comparable, UrlCreator, UrlMapping

public class RegexUrlMapping
extends AbstractUrlMapping
implements UrlMapping

A UrlMapping implementation that takes a Grails URL pattern and turns it into a regex matcher so that URLs can be matched and information captured from the match.

A Grails URL pattern is not a regex, but is an extension to the form defined by Apache Ant and used by Spring AntPathMatcher. Unlike regular Ant paths Grails URL patterns allow for capturing groups in the form:

/blog/(*)/**

The parenthesis define a capturing group. This implementation transforms regular Ant paths into regular expressions that are able to use capturing groups

Since:

0.5

Created: Feb 28, 2007 Time: 6:12:52 PM

Author:

Graeme Rocher

See Also:

AntPathMatcher

Field Summary

Fields inherited from class org.codehaus.groovy.grails.web.mapping.AbstractUrlMapping

actionName, constraints, controllerName, parameterValues, viewName

Fields inherited from interface org.codehaus.groovy.grails.web.mapping.UrlMapping

ACTION, CONTROLLER

Constructor Summary

RegexUrlMapping(UrlMappingData data, Object controllerName, Object actionName, Object viewName, ConstrainedProperty[] constraints)
Constructs a new RegexUrlMapping for the given pattern, controller name, action name and constraints.

Method Summary

int	compareTo(Object o) Compares this UrlMapping instance with the specified UrlMapping instance and deals with URL mapping precedence rules.
protected Pattern	convertToRegex(String url) Converst a Grails URL provides via the UrlMappingData interface to a regular expression
String	createRelativeURL(String controller, String action, Map parameterValues, String encoding) Creates a URL for the given parameters values, controller and action names without the context path information
String	createURL(Map parameterValues, String encoding) Creates a URL for the given parameter values
String	createURL(Map parameterValues, String encoding, String fragment) Creates a URL for the given parameter values
String	createURL(String controller, String action, Map parameterValues, String encoding) Creates a URL for the given parameters values, controller and action names
String	createURL(String controller, String action, Map parameterValues, String encoding, String fragment) Creates a URL for the given parameters values, controller and action names
String[]	getLogicalMappings()
UrlMappingData	getUrlData() Retrieves the UrlMappingData instance that describes this UrlMapping
UrlMappingInfo	match(String uri) Matches the given URI and returns a DefaultUrlMappingInfo instance or null
String	toString()

Methods inherited from class org.codehaus.groovy.grails.web.mapping.AbstractUrlMapping

getActionName, getConstraints, getControllerName, getViewName, setParameterValues

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.codehaus.groovy.grails.web.mapping.UrlMapping

getActionName, getConstraints, getControllerName, getViewName, setParameterValues

Constructor Detail

RegexUrlMapping

public RegexUrlMapping(UrlMappingData data,
                       Object controllerName,
                       Object actionName,
                       Object viewName,
                       ConstrainedProperty[] constraints)

Constructs a new RegexUrlMapping for the given pattern, controller name, action name and constraints.

Parameters:

data - An instance of the UrlMappingData class that holds necessary information of the URL mapping

controllerName - The name of the controller the URL maps to (required)

actionName - The name of the action the URL maps to

viewName - The name of the view as an alternative to the name of the action. If the action is specified it takes precedence over the view name during mapping

constraints - A list of ConstrainedProperty instances that relate to tokens in the URL

See Also:

ConstrainedProperty

Method Detail

convertToRegex

protected Pattern convertToRegex(String url)

Converst a Grails URL provides via the UrlMappingData interface to a regular expression

Parameters:

url - The URL to convert

Returns:

A regex Pattern objet

match

public UrlMappingInfo match(String uri)

Matches the given URI and returns a DefaultUrlMappingInfo instance or null

Specified by:

match in interface UrlMapping

Parameters:

uri - The URI to match

Returns:

A UrlMappingInfo instance or null

See Also:

UrlMappingInfo

createURL

public String createURL(Map parameterValues,
                        String encoding)

Description copied from interface: UrlCreator

Creates a URL for the given parameter values

Specified by:

createURL in interface UrlCreator

Parameters:

parameterValues - The parameter values

encoding - The encoding to use for parameters

Returns:

Returns the created URL for the given parameter values

See Also:

UrlMapping

createURL

public String createURL(Map parameterValues,
                        String encoding,
                        String fragment)

Description copied from interface: UrlCreator

Creates a URL for the given parameter values

Specified by:

createURL in interface UrlCreator

Parameters:

parameterValues - The parameter values

encoding - The encoding to use for parameters

fragment - The URL fragment to be appended to the URL following a #

Returns:

Returns the created URL for the given parameter values

createURL

public String createURL(String controller,
                        String action,
                        Map parameterValues,
                        String encoding)

Description copied from interface: UrlCreator

Creates a URL for the given parameters values, controller and action names

Specified by:

createURL in interface UrlCreator

Parameters:

controller - The controller name

action - The action name

parameterValues - The parameter values

encoding - The encoding to use for parameters

Returns:

The created URL for the given arguments

createRelativeURL

public String createRelativeURL(String controller,
                                String action,
                                Map parameterValues,
                                String encoding)

Description copied from interface: UrlCreator

Creates a URL for the given parameters values, controller and action names without the context path information

Specified by:

createRelativeURL in interface UrlCreator

Parameters:

controller - The controller name

action - The action name

parameterValues - The parameter values

encoding - The encoding to use for parameters

Returns:

The created URL for the given arguments

createURL

public String createURL(String controller,
                        String action,
                        Map parameterValues,
                        String encoding,
                        String fragment)

Description copied from interface: UrlCreator

Creates a URL for the given parameters values, controller and action names

Specified by:

createURL in interface UrlCreator

Parameters:

controller - The controller name

action - The action name

parameterValues - The parameter values

encoding - The encoding to use for parameters

fragment - The URL fragment to be appended to the URL following a #

Returns:

The created URL for the given arguments

getUrlData

public UrlMappingData getUrlData()

Description copied from interface: UrlMapping

Retrieves the UrlMappingData instance that describes this UrlMapping

Specified by:

getUrlData in interface UrlMapping

Returns:

The UrlMappingData instance

getLogicalMappings

public String[] getLogicalMappings()

compareTo

public int compareTo(Object o)

Compares this UrlMapping instance with the specified UrlMapping instance and deals with URL mapping precedence rules.

Specified by:

compareTo in interface Comparable

Parameters:

o - An instance of the UrlMapping interface

Returns:

1 if this UrlMapping should match before the specified UrlMapping. 0 if they are equal or -1 if this UrlMapping should match after the given UrlMapping

toString

public String toString()

Overrides:

toString in class Object