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Posted to user@commons.apache.org by James Carman <ja...@carmanconsulting.com> on 2004/03/18 15:17:46 UTC
[FUNCTOR] Does functor have a class for this?
I want to turn a BinaryPredicate into a Predicate by using Functions for the
left/right operands to the BinaryPredicate.
public class BinaryPredicateToPredicate implements Predicate
{
private final Function leftFunction;
private final Function rightFunction;
private final BinaryPredicate binaryPredicate;
public BinaryPredicateToPredicate( BinaryPredicate binaryPredicate,
Function leftFunction, Function rightPredicate )
{
this.leftFunction = leftFunction;
this.rightFunction = rightFunction;
this.binaryPredicate = binaryPredicate;
}
public boolean test()
{
binaryPredicate.test( leftFunction.evaluate(), rightFunction.evaluate()
);
}
}
Does the functor library already have something for this?
Validator (please help)
Posted by Betty Koon <bk...@adobe.com>.
Hi all,
I have followed the example in struts documentation (validwhen validaton
section). I have an email address field that needs to be validated when one
other field's value is set to "true". But I can't get it to work at all.
This is the example I cut and paste from struts web site. I am getting the
following exception. See below. Any idea?
Here is my version:
<field property="emailAddress" depends="validwhen">
<arg0 key="userinfo.emailAddress.label"/>
<var>
<var-name>test</var-name>
<var-value>((someFiled != 'some_value') or (*this* !=
null))</var-value>
</var>
</field>
****************************************************************************
************************************************************************
As an example of how this would work, consider a form with fields
sendNewsletter and emailAddress. The emailAddress field is only required if
the sendNewsletter field is not null. You could code this using the
validwhen rule as:
<field property="emailAddress" depends="validwhen">
<arg0 key="userinfo.emailAddress.label"/>
<var>
<var-name>test</var-name>
<var-value>((sendNewsletter == null) or (*this* !=
null))</var-value>
</var>
</field>
14:22:36,603 ERROR [STDERR] line 1:23: expecting ''', found '_' 14:22:36,603
ERROR [STDERR] at
org.apache.struts.validator.validwhen.ValidWhenLexer.nextToken(ValidWhenLexe
r.java:228)
14:22:36,603 ERROR [STDERR] at antlr.TokenBuffer.fill(TokenBuffer.java:69)
14:22:36,603 ERROR [STDERR] at antlr.TokenBuffer.LA(TokenBuffer.java:80)
14:22:36,603 ERROR [STDERR] at antlr.LLkParser.LA(LLkParser.java:52)
14:22:36,603 ERROR [STDERR] at
org.apache.struts.validator.validwhen.ValidWhenParser.value(ValidWhenParser.
java:380)
14:22:36,603 ERROR [STDERR] at
org.apache.struts.validator.validwhen.ValidWhenParser.comparisonExpression(V
alidWhenParser.java:434)
14:22:36,603 ERROR [STDERR] at
org.apache.struts.validator.validwhen.ValidWhenParser.expr(ValidWhenParser.j
ava:415)
14:22:36,603 ERROR [STDERR] at
org.apache.struts.validator.validwhen.ValidWhenParser.joinedExpression(Valid
WhenParser.java:446)
14:22:36,603 ERROR [STDERR] at
org.apache.struts.validator.validwhen.ValidWhenParser.expr(ValidWhenParser.j
ava:420)
14:22:36,603 ERROR [STDERR] at
org.apache.struts.validator.validwhen.ValidWhenParser.expression(ValidWhenPa
rser.java:406)
14:22:36,603 ERROR [STDERR] at
org.apache.struts.validator.validwhen.ValidWhen.validateValidWhen(ValidWhen.
java:155)
14:22:36,603 ERROR [STDERR] at
sun.reflect.GeneratedMethodAccessor155.invoke(Unknown Source) 14:22:36,603
ERROR [STDERR] at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:25)
14:22:36,603 ERROR [STDERR] at
java.lang.reflect.Method.invoke(Method.java:324)
14:22:36,603 ERROR [STDERR] at
org.apache.commons.validator.ValidatorAction.executeValidationMethod(Validat
orAction.java:610)
14:22:36,603 ERROR [STDERR] at
org.apache.commons.validator.Field.validateForRule(Field.java:848)
14:22:36,603 ERROR [STDERR] at
org.apache.commons.validator.Field.validate(Field.java:927)
14:22:36,603 ERROR [STDERR] at
org.apache.commons.validator.Form.validate(Form.java:211)
14:22:36,603 ERROR [STDERR] at
org.apache.commons.validator.Validator.validate(Validator.java:407)
14:22:36,603 ERROR [STDERR] at
org.apache.struts.validator.ValidatorForm.validate(ValidatorForm.java:151)
14:22:36,603 ERROR [STDERR] at
com.adobe.edc.server.presentation.fw.EDCActionForm.validate(EDCActionForm.ja
va:96)
14:22:36,603 ERROR [STDERR] at
com.adobe.edc.server.presentation.policy.AssignPermissionAction.addExternal_
onClick(AssignPermissionAction.java:200)
14:22:36,603 ERROR [STDERR] at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 14:22:36,603
ERROR [STDERR] at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39
)
14:22:36,603 ERROR [STDERR] at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:25)
14:22:36,603 ERROR [STDERR] at
java.lang.reflect.Method.invoke(Method.java:324)
14:22:36,603 ERROR [STDERR] at
com.cc.framework.adapter.struts.FWAction.handleFormAction(Unknown Source)
14:22:36,603 ERROR [STDERR] at
com.cc.framework.adapter.struts.FWAction.execute(Unknown Source)
14:22:36,603 ERROR [STDERR] at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProces
sor.java:462)
14:22:36,603 ERROR [STDERR] at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:267)
14:22:36,603 ERROR [STDERR] at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1187)
14:22:36,603 ERROR [STDERR] at
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:451)
14:22:36,603 ERROR [STDERR] at
javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
14:22:36,603 ERROR [STDERR] at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:247)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:193)
14:22:36,603 ERROR [STDERR] at
com.adobe.edc.server.presentation.util.SetCharacterEncodingFilter.doFilter(S
etCharacterEncodingFilter.java:147)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:213)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:193)
14:22:36,603 ERROR [STDERR] at
com.adobe.edc.server.presentation.auth.AuthenticationFilter.doFilter(Authent
icationFilter.java:144)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:213)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:193)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:256)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:191)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase
.java:494)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:2
46)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
java:171)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172
)
14:22:36,603 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
14:22:36,612 ERROR [STDERR] at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:509)
14:22:36,612 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
14:22:36,612 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
14:22:36,612 ERROR [STDERR] at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
14:22:36,612 ERROR [STDERR] at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:174)
14:22:36,612 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
14:22:36,612 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
14:22:36,612 ERROR [STDERR] at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
14:22:36,612 ERROR [STDERR] at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
14:22:36,612 ERROR [STDERR] at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:594)
14:22:36,612 ERROR [STDERR] at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConne
ction(Http11Protocol.java:392)
14:22:36,612 ERROR [STDERR] at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
14:22:36,612 ERROR [STDERR] at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav
a:619)
14:22:36,612 ERROR [STDERR] at java.lang.Thread.run(Thread.java:536)
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Re: [FUNCTOR] Does functor have a class for this?
Posted by Rodney Waldhoff <rw...@apache.org>.
I don't think functor currently has a direct representation of this
concept, although you could fabricate one out of some of the existing
concepts. See the composite and adapter packages for example.
UnaryCompositeBinaryPredicate is similar to what you're looking for, but
that expects two unary functions and exposes a binary predicate. You
could start with that and build up to BinaryPredicateToPredicate using
currying, or simply implement it as a new class, as you've done here.
On Thu, 18 Mar 2004, James Carman wrote:
> I want to turn a BinaryPredicate into a Predicate by using Functions for the
> left/right operands to the BinaryPredicate.
>
>
>
> public class BinaryPredicateToPredicate implements Predicate
>
> {
>
> private final Function leftFunction;
>
> private final Function rightFunction;
>
> private final BinaryPredicate binaryPredicate;
>
>
>
> public BinaryPredicateToPredicate( BinaryPredicate binaryPredicate,
> Function leftFunction, Function rightPredicate )
>
> {
>
> this.leftFunction = leftFunction;
>
> this.rightFunction = rightFunction;
>
> this.binaryPredicate = binaryPredicate;
>
> }
>
>
>
> public boolean test()
>
> {
>
> binaryPredicate.test( leftFunction.evaluate(), rightFunction.evaluate()
> );
>
> }
>
> }
>
>
>
> Does the functor library already have something for this?
>
>
>
>
--
- Rod <http://radio.weblogs.com/0122027/>
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Re: [FUNCTOR] Does functor have a class for this?
Posted by "matthew.hawthorne" <ma...@apache.org>.
James Carman wrote:
> Does nobody monitor the functor project?
I thought there were a few people who did, such as Rodney, but the
project hasn't seemed very active lately.
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RE: [FUNCTOR] Does functor have a class for this?
Posted by James Carman <ja...@carmanconsulting.com>.
Does nobody monitor the functor project?
-----Original Message-----
From: James Carman [mailto:james@carmanconsulting.com]
Sent: Thursday, March 18, 2004 9:18 AM
To: commons-user@jakarta.apache.org
Subject: [FUNCTOR] Does functor have a class for this?
I want to turn a BinaryPredicate into a Predicate by using Functions for the
left/right operands to the BinaryPredicate.
public class BinaryPredicateToPredicate implements Predicate
{
private final Function leftFunction;
private final Function rightFunction;
private final BinaryPredicate binaryPredicate;
public BinaryPredicateToPredicate( BinaryPredicate binaryPredicate,
Function leftFunction, Function rightPredicate )
{
this.leftFunction = leftFunction;
this.rightFunction = rightFunction;
this.binaryPredicate = binaryPredicate;
}
public boolean test()
{
binaryPredicate.test( leftFunction.evaluate(), rightFunction.evaluate()
);
}
}
Does the functor library already have something for this?
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