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JSF Futures: Apache Shale
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Name ContextRelativePathFilter
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Description Allows using Regular Expressions to take action on the contextrelative portion of the request URI The main advantage of this is the Regular Expression feature, which far surpasses the capabilities of the URI matching allowed in a webxml Like ContextRelativePathFilter, but matches against the remote address obtained from the getRemoteAddr( ) method of the incoming ServletRequest Like ContextRelativePathFilter, but matches against the remote address obtained from the getRemoteHost( ) method of the incoming ServletRequest
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TABLE D-5 Command Implementations Provided by Shale
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Validation (shale-corejar)
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The Jakarta Commons Validator project (http://jakartaapacheorg/commons/validator/) is a mature, popular, and feature-rich validation framework It offers client- and server-side validation of popular data-types such as credit card numbers, ISBN numbers, e-mail addresses, and dates Shale provides three JSP custom tags that allow you to use the full capabilities of Commons Validator inside of JSF applications Let s start by converting the registerjsp from the sample application in 9 in order to use Shale Validation
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<h:form onsubmit="return validateForm(this);"> <h:messages globalOnly="true" infoClass="RegError"/> <h:panelGrid width="70%" columns="3" border="0"> <h:outputLabel value="First Name:"/> <h:inputText id="fname" binding="#{Register_BackingfirstName}"> <s:commonsValidator type="required" message="I need your first name!" server="true" client="true" /> </h:inputText> <h:message for="fname" errorClass="ValidateError"/> <h:outputLabel value="Last Name:"/> <h:inputText id="lname" binding="#{Register_BackinglastName}"> <s:commonsValidator type="required" message="I need your last name!" server="true" client="true" /> </h:inputText> <h:message for="lname" errorClass="ValidateError"/> <h:outputLabel value="Date of Birth:(mm-dd-yy)"/> <h:inputText id="dob" binding="#{Register_Backingdob}" > <f:convertDateTime pattern="mm-dd-yy"/> <s:commonsValidator type="date" datePatternStrict="mm-dd-yy" server="true" client="true" /> </h:inputText>
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PART V
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Part V:
Appendixes
<h:message for="dob" errorClass="ValidateError"/> <h:outputLabel value="Email:"/> <h:inputText id="email" binding="#{Register_Backingemail}" validator="#{Register_BackingvalidateEmail}"> <s:commonsValidator type="required" message="Must provide an email address" server="true" client="true" /> <s:commonsValidator type="email" message="Email address must be valid" server="true" client="true" /> </h:inputText> <h:message for="email" errorClass="ValidateError"/> <h:outputLabel value="Userid:"/> <h:inputText id="userid" binding="#{Register_Backinguserid}"> <s:commonsValidator type="minlength" message="Userid must be at least 6 characters long" client="true" server="true" minlength="6" /> <s:commonsValidator type="mask" message="Userid must consist of letters and numbers but no special characters or spaces" client="true" server="true" > <s:validatorVar name="mask" value="[a-zA-Z0-9]*"/> </s:commonsValidator> </h:inputText> <h:message for="userid" errorClass="ValidateError"/> <h:outputLabel value="Password:"/> <h:inputSecret required="true" id="password" binding="#{Register_Backingpassword}" validator="#{Register_BackingvalidatePassword}"/> <!-- this was left to use the standard JSF validator --> <h:message for="password" errorClass="ValidateError"/> <h:outputLabel value="Retype Password:"/> <h:inputSecret required="true" id="password2" binding="#{Register_BackingpasswordCheck}"/> <!-- this was left to use the standard JSF validator --> <h:message for="password2" errorClass="ValidateError"/> <f:verbatim> </f:verbatim> <h:commandButton value="Register" action="#{Register_BackingregisterUser}"/> <h:commandButton value="Cancel" action="cancel" immediate="true" /> </h:panelGrid> <s:validatorScript functionName="validateForm"/> </h:form>
In the preceding JSP code, the parts that relate to Shale Validation have been printed in boldface type Shale Validation is exposed to the page author via the three JSP custom tags used earlier and described in Table D-6 The <s:commonsValidator> tag has a type attribute that indicates which of the Commons Validators to use There are three different types of validators at work in the preceding JSP code: required, minlength, and mask The default allowable values for the type attribute are given in Table D-7 All of them work in both client- and server-side mode
Appendix D:
JSF Futures: Apache Shale
Tag Name s:commonsValidator
Description Exposes a commons validator, identified by type, for use by the page author This will cause a standard JSF Validator instance to be created and added to the component, inside which this tag is nested The Validator instance will call through to the corresponding Commons Validator Name/value pairs for configuring the validator Must be nested inside of s:commonsValidator Generates the JavaScript that performs client-side validation for validators that request it This script is callable from any JavaScript event handler, but most commonly it is called from the h:form s onsubmit This tag should occur just before the closing </h:form> tag
s:validatorVar s:validatorScript
TABLE D-6 Shale Validator Tags
The set of supported types may be expanded by providing an additional validator-rulesxml file For information on how to do this, please consult the Shale documentation, referenced in the later Resources section
Remoting (shale-remotingjar)
As shown in 11, one of the ways to leverage JSF in an AJAX application is by using a PhaseListener to act on incoming AJAX requests and serve up the JavaScript file to the client, while also taking action on the component tree If access to the component tree is not needed when processing AJAX requests, but access to such things as managed beans and other non-view artifacts is necessary, the Remoting feature of Shale is useful
Type required minlength maxlength byte short integer float date intRange floatRange creditCard email Description A value is required for this field The length of the value of the field must be at least N characters The length of the value of the field must be less than N characters Value must be convertible to a corresponding primitive type Value must be convertible to a corresponding primitive type Value must be convertible to a corresponding primitive type Value must be convertible to a corresponding primitive type Value must be convertible to a date Value must be between two specified extremes Value must be between two specified extremes Value must be a semantically correct credit card number Note that this does not actually perform any account verification Value must be a semantically correct Internet e-mail address Note that this does not actually perform any SMTP verification
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