org.springmodules.validation.valang.javascript.taglib
Class ValangValidateTag

java.lang.Object
  RequestContextAwareTag
      org.springmodules.validation.valang.javascript.taglib.ValangValidateTag

public class ValangValidateTag
extends RequestContextAwareTag

Generates JavaScript validation code from a set valang validation rules. The generated code requires a set of JavaScript objects to have been placed into the page either by using the ValangCodebaseTag or by directly including the code from the file "valang_codebase.js" located in the org.springmodules.validation.valang.javascript package.

It is expected that the validation rules to be translated are placed into the model using one of the methods from ValangJavaScriptTagUtils or using the Spring MVC interceptor ValangRulesExportInterceptor, however it is not required that rules be placed into the model to use this tag.

If the tag has any body content this will be interpreted as a set of additional valang rules that will be appended to the set of rules located for the provided command name; or if no command name is specified the translated body content will be used to provide all rules.

NOTE: this tag must be placed inside the HTML form tags that the validation rules are expected to apply too; failure to do this will result in a JavaScript exception being thrown when the page loads.

Author:

Oliver Hutchison

Field Summary

static java.lang.String

VALANG_RULES_KEY_PREFIX Prefix which, when appended with a command name, is used to identify valang validation rules placed into the model.

Constructor Summary

ValangValidateTag()

Method Summary

int	doAfterBody()
int	doEndTag()
void	doFinally()
void	doInitBody()
protected int	doStartTagInternal()
protected java.util.Collection	getRulesForCommand()
protected java.util.Collection	parseRulesFromBodyContent()
void	setBodyContent(BodyContent bodyContent)
void	setCommandName(java.lang.String commandName) Sets the name of the command which will be validated by the generated JavaScript.

Methods inherited from class java.lang.Object

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

Field Detail

VALANG_RULES_KEY_PREFIX

public static final java.lang.String VALANG_RULES_KEY_PREFIX

Prefix which, when appended with a command name, is used to identify valang validation rules placed into the model.

See Also:

Constant Field Values

Constructor Detail

ValangValidateTag

public ValangValidateTag()

Method Detail

setCommandName

public void setCommandName(java.lang.String commandName)

Sets the name of the command which will be validated by the generated JavaScript. If this value is specified it is expected that a collection of valang rules for the specified command name have been placed in the model using one of the methods from ValangJavaScriptTagUtils.

See Also:

ValangJavaScriptTagUtils.addValangRulesToModel(BaseCommandController, Map), ValangJavaScriptTagUtils.addValangRulesToModel(String, ValangValidator, Map)

doStartTagInternal

protected int doStartTagInternal()

doInitBody

public void doInitBody()

setBodyContent

public void setBodyContent(BodyContent bodyContent)

doAfterBody

public int doAfterBody()
                throws JspException

Throws:

JspException

doEndTag

public int doEndTag()
             throws JspException

Throws:

JspException

parseRulesFromBodyContent

protected java.util.Collection parseRulesFromBodyContent()
                                                  throws JspException

Throws:

JspException

getRulesForCommand

protected java.util.Collection getRulesForCommand()

doFinally

public void doFinally()