applications/product/minilang/product/subscription/SubscriptionServices.xml

<?xml version="1.0" encoding="UTF-8"?>
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<simple-methods xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://ofbiz.apache.org/Simple-Method" xsi:schemaLocation="http://ofbiz.apache.org/Simple-Method http://ofbiz.apache.org/dtds/simple-methods.xsd">

    <simple-method method-name="createSubscription" short-description="Create a Subscription">
        <make-value entity-name="Subscription" value-field="newEntity"/>
        <if-empty field="parameters.subscriptionId">
            <sequenced-id sequence-name="Subscription" field="newEntity.subscriptionId"/> <!-- get the next sequenced ID -->
            <else>
                <set field="newEntity.subscriptionId" from-field="parameters.subscriptionId"/>
            </else>
        </if-empty>
        <field-to-result field="newEntity.subscriptionId" result-name="subscriptionId"/>

        <!-- lookup the product subscription resource (if exists) -->
        <if-not-empty field="parameters.subscriptionResourceId">
            <if-not-empty field="parameters.productId">
                <entity-and entity-name="ProductSubscriptionResource" list="resourceList" filter-by-date="true">
                    <field-map field-name="subscriptionResourceId" from-field="parameters.subscriptionResourceId"/>
                    <field-map field-name="productId" from-field="parameters.productId"/>
                    <order-by field-name="-fromDate"/>
                </entity-and>
                <first-from-list list="resourceList" entry="resource"/>
                <if-not-empty field="resource">
                    <set-nonpk-fields map="resource" value-field="newEntity"/>
                </if-not-empty>
            </if-not-empty>
        </if-not-empty>

        <set-nonpk-fields map="parameters" value-field="newEntity"/>
        <create-value value-field="newEntity"/>
    </simple-method>

    <simple-method method-name="isSubscribed" short-description="check if a party has a subscription">
        <set field="pfInput.inputFields" from-field="parameters"/>
        <set field="pfInput.entityName" value="Subscription"/>
        <set field="pfInput.filterByDate" from-field="parameters.filterByDate" default-value="Y"/>

        <call-service service-name="performFindList" in-map-name="pfInput">
            <result-to-field result-name="list" field="pfResultList"/>
        </call-service>

        <if-empty field="pfResultList">
            <set field="found" value="false" type="Boolean"/>
            <else>
                <set field="found" value="true" type="Boolean"/>
                <first-from-list list="pfResultList" entry="subscription"/>
                <field-to-result field="subscription.subscriptionId" result-name="subscriptionId"/>
            </else>
        </if-empty>

        <field-to-result field="found" result-name="isSubscribed"/>
    </simple-method>

    <simple-method method-name="getSubscription" short-description="Get Subscription data">
        <entity-one entity-name="Subscription" value-field="subscription"/>
        <field-to-result field="parameters.subscriptionId" result-name="subscriptionId"/>
        <if-not-empty field="subscription">
            <field-to-result field="subscription" result-name="subscription"/>
        </if-not-empty>
    </simple-method>

    <simple-method method-name="updateSubscriptionAttribute" short-description="Create (when not exist) or update (when exist) a Subscription attribute">
        <field-to-result field="parameters.subscriptionId" result-name="subscriptionId"/>
        <entity-one entity-name="SubscriptionAttribute" value-field="lookedUpValue"/>
        <if-empty field="lookedUpValue">
            <make-value entity-name="SubscriptionAttribute" value-field="newEntity"/>
            <set-pk-fields map="parameters" value-field="newEntity"/>
            <set-nonpk-fields map="parameters" value-field="newEntity"/>
            <create-value value-field="newEntity"/>
            <else>
                <set-nonpk-fields map="parameters" value-field="lookedUpValue"/>
                <store-value value-field="lookedUpValue"/>
            </else>
        </if-empty>
    </simple-method>

    <!-- ============== Permission Checking Service ============= -->
    <simple-method method-name="subscriptionPermissionCheck" short-description="Subscription permission checking logic">
        <set field="primaryPermission" value="CATALOG"/>
        <call-simple-method method-name="genericBasePermissionCheck" xml-resource="component://common/minilang/permission/CommonPermissionServices.xml"/>
        <!-- Backwards compatibility - check for non-existent CATALOG_READ permission -->
        <if>
            <condition>
                <and>
                    <if-compare field="hasPermission" value="false" operator="equals" type="Boolean"/>
                    <if-compare field="mainAction" value="VIEW" operator="equals"/>
                </and>
            </condition>
            <then>
                <if-has-permission permission="CATALOG_READ">
                    <set field="hasPermission" type="Boolean" value="true"/>
                    <field-to-result field="hasPermission"/>
                </if-has-permission>
            </then>
        </if>
    </simple-method>

</simple-methods>