使用 Apex 控點自訂程序計畫

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使用 Apex 控點自訂程序計畫

若要支援唯一的定價案例,請將自訂 Apex 邏輯新增至您的定價程序計畫。您可以使用 Apex 勾點,在設定報價條列後套用修改定價內容的自訂業務邏輯。使用 Apex 預先關聯來根據產品屬性調整定價,然後使用 Apex 後關聯來處理定價後群組和其他「報價」物件元素的定價變更。當銷售代表設定產品或變更報價條列項目群組時,定價程序計畫會根據 Apex 中的指示變更定價。

必要版本

適用於:Lightning Experience

提供版本:已啟用 Salesforce 定價的 Revenue Cloud Enterprise、Unlimited 及 Developer Edition

需要的使用者權限
建立、更新和刪除定價程序和程序計畫:	Salesforce 定價設計時間使用者或程序計畫存取權
若要使用定價程序:	Salesforce 定價執行階段使用者
為 Apex 類別定義、編輯、刪除、設定安全性和設定版本設定：	Author Apex

重要

使用 Revenue Cloud 流程類型時,您新增的任何 Apex 邏輯都必須是「程序計畫」執行序列中的第一個或最後一個元素。
只有在透過 Salesforce 使用者介面或 Place Sales Transaction API 觸發「銷售交易」要求時,才支援 Apex 綁架中的外部呼叫。從 Apex 或流程觸發要求時,不支援。
啟用「雙重保留」模式時,不支援 Apex 執行緒中的外部呼叫。如需其他指引,請連絡 Salesforce 客戶支援。
Apex 勾點中的外部呼叫可能會影響效能。因此,無法保證可預測的服務層級目標 (SLO)。

確定「定價的程序計畫協調流程」已開啟。
1. 進入「設定」,在「快速尋找」方塊中輸入收入設定,然後選取「收入設定」。
2. 尋找並視需要啟用「定價的程序計畫協調流程」設定。
3. 停用「排除預設值和銷售交易類型定價程序」設定。

定義 Apex 勾點的類別,以新增至您的定價程序。

進入「設定」,在「快速尋找」方塊中輸入 Apex,然後選取「Apex 類別」。
選取「新增」 以建立新的 Apex 類別。

在類別編輯器中,輸入類別定義。

例如,此預先關聯 (ApexDmAttributePreHook) 會根據其顯示大小,以名稱 Display_Size 來更新動態屬性的值。在這些步驟結束時,會顯示更多 Apex 定價勾點的範例類別。

global class ApexDmlAttributePreHook implements RevSignaling.SignalingApexProcessor {

    public virtual class BaseException extends Exception {}
    public class OtherException extends BaseException {}
    public RevSignaling.TransactionResponse execute(RevSignaling.TransactionRequest request) {
        System.debug('Executing PREHOOK');
        
        String contextId = request.ctxInstanceId;
        Context.IndustriesContext industriesContext = new Context.IndustriesContext();
        
        // STEP 1 - Query SalesTransactionItemAttribute and extract Display_Size values
        Map<String, Object> inputQueryItemAttr = new Map<String, Object>{
            'contextId' => contextId,
            'tags' => new List<String>{ 'SalesTransactionItemAttribute' }
        };
        Map<String, Object> itemAttrQueryOutput = industriesContext.queryTags(inputQueryItemAttr);
        Map<String, Object> itemAttrQueryResult = (Map<String, Object>) itemAttrQueryOutput.get('queryResult');
        List<Object> itemAttrData = (List<Object>) itemAttrQueryResult.get('SalesTransactionItemAttribute');

        Map<String, Decimal> parentCtxIdToDisplaySize = new Map<String, Decimal>();

        for (Object attrObj : itemAttrData) {
            Map<String, Object> attrNode = (Map<String, Object>) attrObj;
            Map<String, Object> tagMap = (Map<String, Object>) attrNode.get('tagValue');

            String attributeName = null;
            String attributeValueStr = null;
            String parentCtxId = null;

            if (tagMap.containsKey('Attribute')) {
                attributeName = (String)((Map<String, Object>) tagMap.get('Attribute')).get('tagValue');
            }
            if (tagMap.containsKey('AttributeValue')) {
                attributeValueStr = (String)((Map<String, Object>) tagMap.get('AttributeValue')).get('tagValue');
            }
            if (tagMap.containsKey('SalesTransactionItemAttrParent')) {
                parentCtxId = (String)((Map<String, Object>) tagMap.get('SalesTransactionItemAttrParent')).get('tagValue');
            }

            if (attributeName == 'Display_Size' && attributeValueStr != null && parentCtxId != null) {
                Decimal sizeValue = Decimal.valueOf(attributeValueStr.split(' ')[0]);
                parentCtxIdToDisplaySize.put(parentCtxId, sizeValue);
                System.debug('DisplaySize=' + sizeValue);
                System.debug('Matched itemCtxId=' + parentCtxId);
            }
        }

        // STEP 2 - Query SalesTransactionItem nodes
        Map<String, Object> inputQueryItem = new Map<String, Object>{
            'contextId' => contextId,
            'tags' => new List<String>{ 'SalesTransactionItem' }
        };
        Map<String, Object> itemQueryOutput = industriesContext.queryTags(inputQueryItem);
        Map<String, Object> itemQueryResult = (Map<String, Object>) itemQueryOutput.get('queryResult');
        List<Object> itemData = (List<Object>) itemQueryResult.get('SalesTransactionItem');

        // STEP 3 - Build update list
        List<Map<String, Object>> itemNodeUpdates = new List<Map<String, Object>>();

        for (Object itemObj : itemData) {
            Map<String, Object> itemNode = (Map<String, Object>) itemObj;
            List<Object> dataPath = (List<Object>) itemNode.get('dataPath');
            System.debug('Full item dataPath: ' + JSON.serialize(dataPath));

            Boolean matched = false;
            for (String ctxKey : parentCtxIdToDisplaySize.keySet()) {
                if (dataPath.contains(ctxKey)) {
                    Decimal newPrice = parentCtxIdToDisplaySize.get(ctxKey);
                    System.debug('DisplaySize match found for item ' + ctxKey);
                    dataPath.remove(0); // Remove contextId

                    itemNodeUpdates.add(new Map<String, Object>{
                        'nodePath' => new Map<String, Object>{ 'dataPath' => dataPath },
                        'attributes' => new List<Object>{
                            new Map<String, Object>{
                                'attributeName' => 'UnitPrice',
                                'attributeValue' => newPrice
                            }
                        }
                    });
                    matched = true;
                    break;
                }
            }

            if (!matched) {
                String itemCtxId = dataPath.size() > 1 ? String.valueOf(dataPath[1]) : 'UNKNOWN';
                System.debug('No DisplaySize match found for item ' + itemCtxId);
            }
        }

        // STEP 4 - Submit context update
        if (!itemNodeUpdates.isEmpty()) {
            Map<String, Object> updateInput = new Map<String, Object>{
                'contextId' => contextId,
                'nodePathAndAttributes' => itemNodeUpdates
            };

            System.debug('--- PREHOOK: SUBMITTING CONTEXT UPDATE ---');
            System.debug(JSON.serializePretty(updateInput));
            industriesContext.updateContextAttributes(updateInput);
        }

        RevSignaling.TransactionResponse response = new RevSignaling.TransactionResponse();
        response.status = RevSignaling.TransactionStatus.SUCCESS;
        //response.status = RevSignaling.TransactionStatus.FAILED;
        //response.message = 'An error occurred during the processing...';
        return response;
    }
    
}

儲存類別定義。

進入「設定」,在「快速尋找」方塊中輸入程序計畫,然後選取「程序計畫定義」。
在「定義名稱」欄中,選取要編輯的程序計畫定義。
進入程序計畫定義,在「程序計畫區段」中選取「新增」以新增區段。
1. 選取「標準」。
2. 為區段命名,例如 Apex 預先關聯的 Pre Apex。
3. 在「區段類型」中,選取「Apex」,然後選取「儲存」。
4. 展開新區段。
5. 針對「階段」,選取「定價」,針對「解決類型」選取「預設值」。
6. 在出現的 Apex 選取方塊中,輸入您上方定義的 Apex 類別,例如 ApexDmlAttributePreHook,然後選取「儲存」。
7. 視需要新增其他預先和後置。
選取「管理區段」,以重新排列「定價程序」區段上方的預留位置,以及其下方的後置位置。
儲存對「程序計畫」定義進行的變更。

範例 Apex 定價勾點的範例類別

前置:將內容中所有行 (例如報價行) 的折扣百分比更新為 2%。


global class ApexDmlDiscountUpdatePreHook implements RevSignaling.SignalingApexProcessor {

    public virtual class BaseException extends Exception {}
    public class OtherException extends BaseException {}
    
    public RevSignaling.TransactionResponse execute(RevSignaling.TransactionRequest request) {
        System.debug('Executing PREHOOK');
        
        String contextId = request.ctxInstanceId;
        Context.IndustriesContext industriesContext = new Context.IndustriesContext();
        
        Integer randomDiscountPercentage = 2;

        // STEP 2 - Query SalesTransactionItem nodes
        Map<String, Object> inputQueryItem = new Map<String, Object>{
            'contextId' => contextId,
            'tags' => new List<String>{ 'SalesTransactionItem' }
        };
        Map<String, Object> itemQueryOutput = industriesContext.queryTags(inputQueryItem);
        Map<String, Object> itemQueryResult = (Map<String, Object>) itemQueryOutput.get('queryResult');
        List<Object> itemData = (List<Object>) itemQueryResult.get('SalesTransactionItem');

        System.debug('QLI itemData=' + itemData);

        // STEP 3 - Build update list
        List<Map<String, Object>> itemNodeUpdates = new List<Map<String, Object>>();

        for (Object itemObj : itemData) {
            Map<String, Object> itemNode = (Map<String, Object>) itemObj;
            List<Object> dataPath = (List<Object>) itemNode.get('dataPath');
            System.debug('Full item dataPath: ' + JSON.serialize(dataPath));

            Boolean matched = false;
            dataPath.remove(0); // Remove contextId

            itemNodeUpdates.add(new Map<String, Object>{
                'nodePath' => new Map<String, Object>{ 'dataPath' => dataPath },
                'attributes' => new List<Object>{
                    new Map<String, Object>{
                        'attributeName' => 'Discount',
                        'attributeValue' => randomDiscountPercentage
                    }
                }
            });
            matched = true;

            if (!matched) {
                String itemCtxId = dataPath.size() > 1 ? String.valueOf(dataPath[1]) : 'UNKNOWN';
                System.debug('No DisplaySize match found for item ' + itemCtxId);
            }
        }

        // STEP 4 - Submit context update
        if (!itemNodeUpdates.isEmpty()) {
            Map<String, Object> updateInput = new Map<String, Object>{
                'contextId' => contextId,
                'nodePathAndAttributes' => itemNodeUpdates
            };

            System.debug('--- PREHOOK: SUBMITTING CONTEXT UPDATE ---');
            System.debug(JSON.serializePretty(updateInput));
            industriesContext.updateContextAttributes(updateInput);
        }

        RevSignaling.TransactionResponse response = new RevSignaling.TransactionResponse();
        response.status = RevSignaling.TransactionStatus.SUCCESS;
        //response.status = RevSignaling.TransactionStatus.FAILED;
        //response.message = 'An error occurred during the processing...';
        return response;
    }
}

Prehook:呼叫外部資源以提取數量值。


global class ApexDmlQuantityCalloutPreHook implements RevSignaling.SignalingApexProcessor {

    public virtual class BaseException extends Exception {}
    public class OtherException extends BaseException {}
    
    public RevSignaling.TransactionResponse execute(RevSignaling.TransactionRequest request) {
        System.debug('Executing PREHOOK');
        
        String contextId = request.ctxInstanceId;
        Context.IndustriesContext industriesContext = new Context.IndustriesContext();
        
        // STEP 1 - External Callout Test
        Integer randomNumber = getRandomNumber();
        System.debug(' Random Number from API: ' + randomNumber);

        // STEP 2 - Query SalesTransactionItem nodes
        Map<String, Object> inputQueryItem = new Map<String, Object>{
            'contextId' => contextId,
            'tags' => new List<String>{ 'SalesTransactionItem' }
        };
        Map<String, Object> itemQueryOutput = industriesContext.queryTags(inputQueryItem);
        Map<String, Object> itemQueryResult = (Map<String, Object>) itemQueryOutput.get('queryResult');
        List<Object> itemData = (List<Object>) itemQueryResult.get('SalesTransactionItem');

        System.debug('QLI itemData=' + itemData);

        // STEP 3 - Build update list
        List<Map<String, Object>> itemNodeUpdates = new List<Map<String, Object>>();

        for (Object itemObj : itemData) {
            Map<String, Object> itemNode = (Map<String, Object>) itemObj;
            List<Object> dataPath = (List<Object>) itemNode.get('dataPath');
            System.debug('Full item dataPath: ' + JSON.serialize(dataPath));

            Boolean matched = false;
            dataPath.remove(0); // Remove contextId
    
            itemNodeUpdates.add(new Map<String, Object>{
                'nodePath' => new Map<String, Object>{ 'dataPath' => dataPath },
                'attributes' => new List<Object>{
                    new Map<String, Object>{
                        'attributeName' => 'Quantity',
                        'attributeValue' => randomNumber
                    }
                }
            });
            matched = true;

            if (!matched) {
                String itemCtxId = dataPath.size() > 1 ? String.valueOf(dataPath[1]) : 'UNKNOWN';
                System.debug('No DisplaySize match found for item ' + itemCtxId);
            }
        }

        // STEP 4 - Submit context update
        if (!itemNodeUpdates.isEmpty()) {
            Map<String, Object> updateInput = new Map<String, Object>{
                'contextId' => contextId,
                'nodePathAndAttributes' => itemNodeUpdates
            };

            System.debug('--- PREHOOK: SUBMITTING CONTEXT UPDATE ---');
            System.debug(JSON.serializePretty(updateInput));
            industriesContext.updateContextAttributes(updateInput);
        }

        RevSignaling.TransactionResponse response = new RevSignaling.TransactionResponse();
        response.status = RevSignaling.TransactionStatus.SUCCESS;
        //response.status = RevSignaling.TransactionStatus.FAILED;
        //response.message = 'An error occurred during the processing...';
        return response;
    }
    
    // External callout
    private Integer getRandomNumber() {
        String endpoint = 'https://www.random.org/integers/?num=1&min=1&max=100&col=1&base=10&format=plain&rnd=new';
        Http http = new Http();
        HttpRequest req = new HttpRequest();
        req.setEndpoint(endpoint);
        req.setMethod('GET');
        req.setTimeout(5000);

        try {
            HttpResponse res = http.send(req);
            if (res.getStatusCode() == 200) {
                System.debug('Fetched prices from external service');
                return Integer.valueOf(res.getBody().trim());
            } else {
                System.debug(' Callout failed: ' + res.getStatus());
            }
        } catch (Exception ex) {
            System.debug(' Exception during callout: ' + ex.getMessage());
        }
        return 10;
    }
}

前置:如果產品的「屬性名稱」為「顯示」,且其「屬性值」為「1080p 內建顯示」,或其「屬性名稱」為「印表機」,且其「屬性值」為「雷射」,則會觸發產品價格的更新。


global class ApexDmlMultiAttributePreHook implements RevSignaling.SignalingApexProcessor {

    public virtual class BaseException extends Exception {}
    public class OtherException extends BaseException {}
    public RevSignaling.TransactionResponse execute(RevSignaling.TransactionRequest request) {
        System.debug('Executing PREHOOK');
        
        String contextId = request.ctxInstanceId;
        Context.IndustriesContext industriesContext = new Context.IndustriesContext();
        
        // STEP 1 - Query SalesTransactionItemAttribute and extract Display_Size values
        Map<String, Object> inputQueryItemAttr = new Map<String, Object>{
            'contextId' => contextId,
            'tags' => new List<String>{ 'SalesTransactionItemAttribute' }
        };
        Map<String, Object> itemAttrQueryOutput = industriesContext.queryTags(inputQueryItemAttr);
        Map<String, Object> itemAttrQueryResult = (Map<String, Object>) itemAttrQueryOutput.get('queryResult');
        List<Object> itemAttrData = (List<Object>) itemAttrQueryResult.get('SalesTransactionItemAttribute');

        Map<String, Decimal> parentCtxIdToAttribute = new Map<String, Decimal>();

        for (Object attrObj : itemAttrData) {
            Map<String, Object> attrNode = (Map<String, Object>) attrObj;
            Map<String, Object> tagMap = (Map<String, Object>) attrNode.get('tagValue');

            String attributeName = null;
            String attributeValueStr = null;
            String parentCtxId = null;

            System.debug('TagMap ' + tagMap);
            if (tagMap.containsKey('Attribute')) {
                attributeName = (String)((Map<String, Object>) tagMap.get('Attribute')).get('tagValue');
            }
            if (tagMap.containsKey('AttributeValue')) {
                attributeValueStr = (String)((Map<String, Object>) tagMap.get('AttributeValue')).get('tagValue');
            }
            if (tagMap.containsKey('SalesTransactionItemAttrParent')) {
                parentCtxId = (String)((Map<String, Object>) tagMap.get('SalesTransactionItemAttrParent')).get('tagValue');
            }
            
            if (attributeName == 'Display' && attributeValueStr == '1080p Built-in Display' && parentCtxId != null) {
               Decimal defaultDisplayCost = 1000.00;
               parentCtxIdToAttribute.put(parentCtxId, defaultDisplayCost);
               System.debug('Display=' + defaultDisplayCost);
               System.debug('Matched itemCtxId=' + parentCtxId);
            }
            
            if (attributeName == 'Printer' && attributeValueStr == 'Laser' && parentCtxId != null) {
               Decimal defaultLaserPrinterCost = 500.00;
               parentCtxIdToAttribute.put(parentCtxId, defaultLaserPrinterCost);
               System.debug('Printer=' + defaultLaserPrinterCost);
               System.debug('Matched itemCtxId=' + parentCtxId);
            }
        }

        // STEP 2 - Query SalesTransactionItem nodes
        Map<String, Object> inputQueryItem = new Map<String, Object>{
            'contextId' => contextId,
            'tags' => new List<String>{ 'SalesTransactionItem' }
        };
        Map<String, Object> itemQueryOutput = industriesContext.queryTags(inputQueryItem);
        Map<String, Object> itemQueryResult = (Map<String, Object>) itemQueryOutput.get('queryResult');
        List<Object> itemData = (List<Object>) itemQueryResult.get('SalesTransactionItem');

        // STEP 3 - Build update list
        List<Map<String, Object>> itemNodeUpdates = new List<Map<String, Object>>();

        for (Object itemObj : itemData) {
            Map<String, Object> itemNode = (Map<String, Object>) itemObj;
            List<Object> dataPath = (List<Object>) itemNode.get('dataPath');
            System.debug('Full item dataPath: ' + JSON.serialize(dataPath));

            Boolean matched = false;
            for (String ctxKey : parentCtxIdToAttribute.keySet()) {
                if (dataPath.contains(ctxKey)) {
                    Decimal newPrice = parentCtxIdToAttribute.get(ctxKey);
                    System.debug('Attribute match found for item ' + ctxKey);
                    System.debug('Attribue with new price ' + newPrice);
                    dataPath.remove(0); // Remove contextId

                    itemNodeUpdates.add(new Map<String, Object>{
                        'nodePath' => new Map<String, Object>{ 'dataPath' => dataPath },
                        'attributes' => new List<Object>{
                            new Map<String, Object>{
                                'attributeName' => 'UnitPrice',
                                'attributeValue' => newPrice
                            }
                        }
                    });
                    matched = true;
                    break;
                }
            }

            if (!matched) {
                String itemCtxId = dataPath.size() > 1 ? String.valueOf(dataPath[1]) : 'UNKNOWN';
                System.debug('No DisplaySize match found for item ' + itemCtxId);
            }
        }

        // STEP 4 - Submit context update
        if (!itemNodeUpdates.isEmpty()) {
            Map<String, Object> updateInput = new Map<String, Object>{
                'contextId' => contextId,
                'nodePathAndAttributes' => itemNodeUpdates
            };

            System.debug('--- PREHOOK: SUBMITTING CONTEXT UPDATE ---');
            System.debug(JSON.serializePretty(updateInput));
            industriesContext.updateContextAttributes(updateInput);
        }

        RevSignaling.TransactionResponse response = new RevSignaling.TransactionResponse();
        response.status = RevSignaling.TransactionStatus.SUCCESS;
        //response.status = RevSignaling.TransactionStatus.FAILED;
        //response.message = 'An error occurred during the processing...';
        return response;
    }
    
}

Prehook:將隨機折扣百分比套用至內容中的所有行。


global class ApexDmlRandomDiscountPreHook implements RevSignaling.SignalingApexProcessor {

    public virtual class BaseException extends Exception {}
    public class OtherException extends BaseException {}
    
    public RevSignaling.TransactionResponse execute(RevSignaling.TransactionRequest request) {
        System.debug('Executing PREHOOK');
        
        String contextId = request.ctxInstanceId;
        Context.IndustriesContext industriesContext = new Context.IndustriesContext();
        
        Integer randomDiscountPercentage = getRandomNumber();

        // STEP 2 - Query SalesTransactionItem nodes
        Map<String, Object> inputQueryItem = new Map<String, Object>{
            'contextId' => contextId,
            'tags' => new List<String>{ 'SalesTransactionItem' }
        };
        Map<String, Object> itemQueryOutput = industriesContext.queryTags(inputQueryItem);
        Map<String, Object> itemQueryResult = (Map<String, Object>) itemQueryOutput.get('queryResult');
        List<Object> itemData = (List<Object>) itemQueryResult.get('SalesTransactionItem');

        System.debug('QLI itemData=' + itemData);

        // STEP 3 - Build update list
        List<Map<String, Object>> itemNodeUpdates = new List<Map<String, Object>>();

        for (Object itemObj : itemData) {
            Map<String, Object> itemNode = (Map<String, Object>) itemObj;
            List<Object> dataPath = (List<Object>) itemNode.get('dataPath');
            System.debug('Full item dataPath: ' + JSON.serialize(dataPath));

            Boolean matched = false;
            dataPath.remove(0); // Remove contextId

            itemNodeUpdates.add(new Map<String, Object>{
                'nodePath' => new Map<String, Object>{ 'dataPath' => dataPath },
                'attributes' => new List<Object>{
                    new Map<String, Object>{
                        'attributeName' => 'Discount',
                        'attributeValue' => randomDiscountPercentage
                    }
                }
            });
            matched = true;

            if (!matched) {
                String itemCtxId = dataPath.size() > 1 ? String.valueOf(dataPath[1]) : 'UNKNOWN';
                System.debug('No DisplaySize match found for item ' + itemCtxId);
            }
        }

        // STEP 4 - Submit context update
        if (!itemNodeUpdates.isEmpty()) {
            Map<String, Object> updateInput = new Map<String, Object>{
                'contextId' => contextId,
                'nodePathAndAttributes' => itemNodeUpdates
            };

            System.debug('--- PREHOOK: SUBMITTING CONTEXT UPDATE ---');
            System.debug(JSON.serializePretty(updateInput));
            industriesContext.updateContextAttributes(updateInput);
        }

        RevSignaling.TransactionResponse response = new RevSignaling.TransactionResponse();
        response.status = RevSignaling.TransactionStatus.SUCCESS;
        //response.status = RevSignaling.TransactionStatus.FAILED;
        //response.message = 'An error occurred during the processing...';
        return response;
    }
        // External callout
    public static Integer getRandomNumber() {
        String endpoint = 'https://www.random.org/integers/?num=1&min=1&max=100&col=1&base=10&format=plain&rnd=new';
        Http http = new Http();
        HttpRequest req = new HttpRequest();
        req.setEndpoint(endpoint);
        req.setMethod('GET');
        req.setTimeout(5000);

        try {
            HttpResponse res = http.send(req);
            if (res.getStatusCode() == 200) {
                System.debug('Fetched prices from external service');
                return Integer.valueOf(res.getBody().trim());
            } else {
                System.debug(' Callout failed: ' + res.getStatus());
            }
        } catch (Exception ex) {
            System.debug(' Exception during callout: ' + ex.getMessage());
        }
        return 10;
    }

}

Prehook:使用從呼叫到外部資源的隨機值更新動態屬性值。


global class ApexDmlAttributeExternalCalloutPreHook implements RevSignaling.SignalingApexProcessor {

    public virtual class BaseException extends Exception {}
    public class OtherException extends BaseException {}
    public RevSignaling.TransactionResponse execute(RevSignaling.TransactionRequest request) {
        System.debug('Executing PREHOOK');
        
        String contextId = request.ctxInstanceId;
        Context.IndustriesContext industriesContext = new Context.IndustriesContext();
        
        // STEP 1 - Query SalesTransactionItemAttribute and extract Display_Size values
        Map<String, Object> inputQueryItemAttr = new Map<String, Object>{
            'contextId' => contextId,
            'tags' => new List<String>{ 'SalesTransactionItemAttribute' }
        };
        Map<String, Object> itemAttrQueryOutput = industriesContext.queryTags(inputQueryItemAttr);
        Map<String, Object> itemAttrQueryResult = (Map<String, Object>) itemAttrQueryOutput.get('queryResult');
        List<Object> itemAttrData = (List<Object>) itemAttrQueryResult.get('SalesTransactionItemAttribute');

        Map<String, Decimal> parentCtxIdToDisplaySize = new Map<String, Decimal>();

        for (Object attrObj : itemAttrData) {
            Map<String, Object> attrNode = (Map<String, Object>) attrObj;
            Map<String, Object> tagMap = (Map<String, Object>) attrNode.get('tagValue');

            String attributeName = null;
            String attributeValueStr = null;
            String parentCtxId = null;

            if (tagMap.containsKey('Attribute')) {
                attributeName = (String)((Map<String, Object>) tagMap.get('Attribute')).get('tagValue');
            }
            if (tagMap.containsKey('AttributeValue')) {
                attributeValueStr = (String)((Map<String, Object>) tagMap.get('AttributeValue')).get('tagValue');
            }
            if (tagMap.containsKey('SalesTransactionItemAttrParent')) {
                parentCtxId = (String)((Map<String, Object>) tagMap.get('SalesTransactionItemAttrParent')).get('tagValue');
            }

            if (attributeName == 'Display_Size' && attributeValueStr != null && parentCtxId != null) {
                Decimal sizeValue = getRandomNumber();
                parentCtxIdToDisplaySize.put(parentCtxId, sizeValue);
                System.debug('DisplaySize=' + sizeValue);
                System.debug('Matched itemCtxId=' + parentCtxId);
            }
        }

        // STEP 2 - Query SalesTransactionItem nodes
        Map<String, Object> inputQueryItem = new Map<String, Object>{
            'contextId' => contextId,
            'tags' => new List<String>{ 'SalesTransactionItem' }
        };
        Map<String, Object> itemQueryOutput = industriesContext.queryTags(inputQueryItem);
        Map<String, Object> itemQueryResult = (Map<String, Object>) itemQueryOutput.get('queryResult');
        List<Object> itemData = (List<Object>) itemQueryResult.get('SalesTransactionItem');

        // STEP 3 - Build update list
        List<Map<String, Object>> itemNodeUpdates = new List<Map<String, Object>>();

        for (Object itemObj : itemData) {
            Map<String, Object> itemNode = (Map<String, Object>) itemObj;
            List<Object> dataPath = (List<Object>) itemNode.get('dataPath');
            System.debug('Full item dataPath: ' + JSON.serialize(dataPath));

            Boolean matched = false;
            for (String ctxKey : parentCtxIdToDisplaySize.keySet()) {
                if (dataPath.contains(ctxKey)) {
                    Decimal newPrice = parentCtxIdToDisplaySize.get(ctxKey);
                    System.debug('DisplaySize match found for item ' + ctxKey);
                    dataPath.remove(0); // Remove contextId

                    itemNodeUpdates.add(new Map<String, Object>{
                        'nodePath' => new Map<String, Object>{ 'dataPath' => dataPath },
                        'attributes' => new List<Object>{
                            new Map<String, Object>{
                                'attributeName' => 'UnitPrice',
                                'attributeValue' => newPrice
                            }
                        }
                    });
                    matched = true;
                    break;
                }
            }

            if (!matched) {
                String itemCtxId = dataPath.size() > 1 ? String.valueOf(dataPath[1]) : 'UNKNOWN';
                System.debug('No DisplaySize match found for item ' + itemCtxId);
            }
        }

        // STEP 4 - Submit context update
        if (!itemNodeUpdates.isEmpty()) {
            Map<String, Object> updateInput = new Map<String, Object>{
                'contextId' => contextId,
                'nodePathAndAttributes' => itemNodeUpdates
            };

            System.debug('--- PREHOOK: SUBMITTING CONTEXT UPDATE ---');
            System.debug(JSON.serializePretty(updateInput));
            industriesContext.updateContextAttributes(updateInput);
        }

        RevSignaling.TransactionResponse response = new RevSignaling.TransactionResponse();
        response.status = RevSignaling.TransactionStatus.SUCCESS;
        //response.status = RevSignaling.TransactionStatus.FAILED;
        //response.message = 'An error occurred during the processing...';
        return response;
    }
    
        // External callout
    private Integer getRandomNumber() {
        String endpoint = 'https://www.random.org/integers/?num=1&min=1&max=100&col=1&base=10&format=plain&rnd=new';
        Http http = new Http();
        HttpRequest req = new HttpRequest();
        req.setEndpoint(endpoint);
        req.setMethod('GET');
        req.setTimeout(5000);

        try {
            HttpResponse res = http.send(req);
            if (res.getStatusCode() == 200) {
                System.debug('Fetched prices from external service');
                return Integer.valueOf(res.getBody().trim());
            } else {
                System.debug(' Callout failed: ' + res.getStatus());
            }
        } catch (Exception ex) {
            System.debug(' Exception during callout: ' + ex.getMessage());
        }
        return 10;
    }
}

Posthook:更新內容中每一行的描述。


global class ApexDmlDescriptionPostHook implements RevSignaling.SignalingApexProcessor {

    public virtual class BaseException extends Exception {}
    public class OtherException extends BaseException {}
    
    public RevSignaling.TransactionResponse execute(RevSignaling.TransactionRequest request) {
        System.debug('Executing POSTHOOK');
        
        String contextId = request.ctxInstanceId;
        Context.IndustriesContext industriesContext = new Context.IndustriesContext();
        
        String randomDescription = 'via Post Apex Pricing Hook';

        // STEP 2 - Query SalesTransactionItem nodes
        Map<String, Object> inputQueryItem = new Map<String, Object>{
            'contextId' => contextId,
            'tags' => new List<String>{ 'SalesTransactionItem' }
        };
        Map<String, Object> itemQueryOutput = industriesContext.queryTags(inputQueryItem);
        Map<String, Object> itemQueryResult = (Map<String, Object>) itemQueryOutput.get('queryResult');
        List<Object> itemData = (List<Object>) itemQueryResult.get('SalesTransactionItem');

        System.debug('QLI itemData=' + itemData);

        // STEP 3 - Build update list
        List<Map<String, Object>> itemNodeUpdates = new List<Map<String, Object>>();

        for (Object itemObj : itemData) {
            Map<String, Object> itemNode = (Map<String, Object>) itemObj;
            List<Object> dataPath = (List<Object>) itemNode.get('dataPath');
            System.debug('Full item dataPath: ' + JSON.serialize(dataPath));

            Boolean matched = false;
            dataPath.remove(0); // Remove contextId

            itemNodeUpdates.add(new Map<String, Object>{
                'nodePath' => new Map<String, Object>{ 'dataPath' => dataPath },
                'attributes' => new List<Object>{
                    new Map<String, Object>{
                        'attributeName' => 'SalesTrxnItemDescription',
                        'attributeValue' => randomDescription
                    }
                }
            });
            matched = true;

            if (!matched) {
                String itemCtxId = dataPath.size() > 1 ? String.valueOf(dataPath[1]) : 'UNKNOWN';
                System.debug('No DisplaySize match found for item ' + itemCtxId);
            }
        }

        // STEP 4 - Submit context update
        if (!itemNodeUpdates.isEmpty()) {
            Map<String, Object> updateInput = new Map<String, Object>{
                'contextId' => contextId,
                'nodePathAndAttributes' => itemNodeUpdates
            };

            System.debug('--- PREHOOK: SUBMITTING CONTEXT UPDATE ---');
            System.debug(JSON.serializePretty(updateInput));
            industriesContext.updateContextAttributes(updateInput);
        }

        RevSignaling.TransactionResponse response = new RevSignaling.TransactionResponse();
        response.status = RevSignaling.TransactionStatus.SUCCESS;
        //response.status = RevSignaling.TransactionStatus.FAILED;
        //response.message = 'An error occurred during the processing...';
        return response;
    }
}

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