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2017/04/10

[webMethods] 如何在 Java Service 中,將資料寫入 Integration Server 中的 Cache

Problem
假設我們已經在 Integration Server 中,在 Public Cache Managers 中建立一個名為 Test 的 Cache Manager,並於 Test 中建立一個名為 hello 的 cache



若我們希望在 Java Service 中,用 webMethods 提供的套件來:
1. 新增資料到 cache
2. 從 cache 中取出資料
3. 移除 cache 中的資料  


該如何做?



How-to

以下是 sample code:
// --- <<IS-BEGIN-SHARED-SOURCE-AREA>> ---
    
    private static final String cacheManagerName = "Test";
    private static final String cacheName = "hello";
    
    public static void addValueToCacheByKey(IData pipeline, String key, Object value) throws ServiceException {
        IDataCursor cursor = pipeline.getCursor();
    
        IDataUtil.put(cursor, "cacheManagerName", cacheManagerName);
        IDataUtil.put(cursor, "cacheName", cacheName);
        IDataUtil.put(cursor, "key", key);
        IDataUtil.put(cursor, "value", value);
    
        try {
            Service.doInvoke("pub.cache", "put", pipeline);
        } catch (Exception e) {
            throw new ServiceException(e);
        }
        cursor.destroy();
    }
    
    public static Object getValueFromCacheByKey(IData pipeline, String key) throws ServiceException {
        IDataCursor cursor = pipeline.getCursor();
    
        IDataUtil.put(cursor, "cacheManagerName", cacheManagerName);
        IDataUtil.put(cursor, "cacheName", cacheName);
        IDataUtil.put(cursor, "key", key);
        
        IData data = null;
        try {
            data = Service.doInvoke("pub.cache", "get", pipeline);
        } catch (Exception e) {
            throw new ServiceException(e);
        }
        Object result = IDataUtil.get(data.getCursor(), "value");
        
        cursor.destroy();
        
        return result;
    }
    
    public static void removeCacheByKey(IData pipeline, String key) throws ServiceException {
        IDataCursor cursor = pipeline.getCursor();
        
        IDataUtil.put(cursor, "cacheManagerName", cacheManagerName);
        IDataUtil.put(cursor, "cacheName", cacheName);
        IDataUtil.put(cursor, "key", key);
        
        try {
            Service.doInvoke("pub.cache", "remove", pipeline);
        } catch (Exception e) {
            throw new ServiceException(e);
        }
    }   
    // --- <<IS-END-SHARED-SOURCE-AREA>> ---




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