Hello,
We have been using apache commons validator extensively; we have found that a
common pattern can be identified in the way the apache commons validator work.
Apache Commons validator can be ABSTRACTED to a common framework called ACTIONS
framework.
The Actions framework will act in similar manner as validation framework but
will be independent of the way in which actions are execute on the value.
Abstraction points.
1) Validation can be treated as any action
2) The value to be validated is treated as source value
3) The return value true/false can be treated as a target value
4) Source Value -> list of actions to be executed -> Target Value
We have already done this in our enterprise product, we use apache validation
framework even for transforming values in our custom ETL framework.
I am attaching a sample XML file containing the modified tag names.
Once the apache validator is abstracted as actions framework one can use the
same to not only validate the source value but to transform the value or even
in describing and modifying styles of controls in UI and much more. The
advantage here is we use the same digester , loading of elements, extending
forms and stuff, this code remains common.
I am not sure who decides on taking the enhancements for apache on board, I
believe this gives a good framework for solving multiple problems.
Thanks & Regards,
Bhupesh Naik | Architect | Core Elixir
Mastek Ltd., IT5, SDF VII, SEEPZ,
Andheri (E), Mumbai - 400096, Inida.
Board: 56952222 Extn: 1431 | Mobile: +91 9819718331
MASTEK LTD.
"Making a valuable difference"
Mastek in NASSCOM's 'India Top 20' Software Service Exporters List.
In the US, we're called MAJESCOMASTEK
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<!DOCTYPE form-validation PUBLIC
"-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.1.3//EN"
"http://jakarta.apache.org/commons/dtds/validator_1_1_3.dtd";>
<actionlist>
<actionset>
<action-executor name="global">
<target property="dataCdType" depends="addOne,addOne">
<arg0 key="dataCdType.text" />
<var>
<var-name>maxlength</var-name>
<var-value>6</var-value>
</var>
<var>
<var-name>mask</var-name>
<var-value>^[a-zA-Z0-9 , &']*$</var-value>
</var>
</target>
<target property="sysDateType" depends="formatDate">
<var>
<var-name>sourceDatePattern</var-name>
<var-value>dd-mm-yyyy</var-value>
</var>
<var>
<var-name>targetDatePattern</var-name>
<var-value>dd'th' MMM yyyy</var-value>
</var>
<var>
<var-name>datePatternStrict</var-name>
<var-value>false</var-value>
</var>
</target>
<target property="countryLookup" depends="lookupMap">
<var>
<var-name>mapsetname</var-name>
<var-value>CountryMap</var-value>
</var>
</target>
<target property="substring" depends="getSubstring">
<var>
<var-name>beginIndex</var-name>
<var-value>2</var-value>
</var>
<var>
<var-name>endIndex</var-name>
<var-value>5</var-value>
</var>
</target>
<target property="default" depends="getDefaultValue">
<var>
<var-name>defaultValue</var-name>
<var-value>ABC</var-value>
</var>
</target>
<target property="constant" depends="getConstantValue">
<var>
<var-name>constantValue</var-name>
<var-value>123</var-value>
</var>
</target>
<target property="sampleObjectTransform" depends="transformObject">
<arg0 key="registrationDtFrom.text" />
<var>
<var-name>transformers</var-name>
<var-value>com.mastek.elixir.system.eis.etl.handler.fsa.common.transformer.FSATransformer</var-value>
</var>
<!-- <var>
<var-name>transformerInvoker</var-name>
<var-value>com.mastek.elixir.system.common.action.SequenceTransformerInvoker</var-value>
</var> -->
<var>
<var-name>transformerMethodList</var-name>
<var-value>sampleTransform</var-value>
</var>
</target>
</action-executor>
</actionset>
</actionlist>
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