custom taglib

taglib

example:
A Java file: src/main/java/org/jahia/modules/survey/taglib/FormFunctions.java
Declare taglib in TLD: src/main/resources/META-INF/jahia-survey.tld

<description>Jahia Survey module tag library</description>
    <display-name>Jahia Survey Service</display-name>
    <tlib-version>1.0-SNAPSHOT</tlib-version>
    <short-name>survey</short-name>
    <uri>http://www.jahia.org/tags/survey</uri>

    <function>
        <name>getFormFields</name>
        <function-class>org.jahia.modules.survey.taglib.FormFunctions</function-class>
        <function-signature>java.util.Map getFormFields(org.jahia.services.content.JCRNodeWrapper)</function-signature>
    </function>
    

Use in jsp:
<%@ taglib prefix="survey" uri="http://www.jahia.org/tags/survey" %>
<c:set value="${survey:getFormFields(currentNode.parent)}" var="formFields" scope="request"/>