|By Anthony Krinsky||
|November 29, 1999 12:00 AM EST||
Managing and displaying content stored in the Spectra object store will be a major feature of any Spectra project. Content will come from a variety of places: self-service applications, system-generated messages and objects, and externally provided articles and data from a variety of content providers. The latter is called "syndicated content." This article demonstrates how one might automate the insertion of syndicated content from an outside news service.
There are two methods of getting syndicated content in Allaire Spectra: the hard way...and the easy way. The easy way is to transfer content over HTTP from one Spectra machine to another using the Syndication features of the COAPI (Content Object API) (see Figure 1, Scenario 3). This content syndication process gets a terrific write-up in chapter 14, "Syndication and Remote Access," of the Programming with Allaire Spectra manual.
Alternatively, content vendors wouldn't need their own Spectra servers, but would simply package the data in an XML format, WDDX, that Spectra understands (Figure 1, Scenario 2). Allaire will soon begin to promote WDDX, as implemented by the COAPI, for this purpose. Spectra users and content providers can also use XSL transformation engines to normalize XML data before or after syndication. Allaire may soon bundle Granularity Information Architecture's GIAXT XSL transformation engine (www.granularity.com) to provide such translation services.
In the meantime we'll need to process newsfeeds ourselves and programmatically funnel them into the object store through the COAPI (Figure 1, Scenario 1). It's not elegant, but it's easy to implement and works quite well.p> If you want real-time news from a variety of sources and you want it fast, one of the best places to start is Screaming Media (www.screamingmedia.net). Screaming Media is a nice solution because they aggregate content from hundreds of traditional and nontraditional sources, provide data in a consistent format, allow you to pay only for what you use and don't require impression-based royalties. For $2,500 up-front and $500/month (and up), Screaming Media will send piping-hot, filtered news to a proprietary Java component, Siteware, that sits on your server. Reuters, Wavo and iSyndicate provide a similar service and each has its own proprietary or third-party syndication components.
Installing the Siteware component first requires installing the Java 1.1.8 Run-time Environment (JRE) from http://java.sun.com. You then unzip some files and add a "siteware.bat" shortcut (on NT) to the start-up (C:\WINNT\Profiles\All Users\Start Menu\Programs\Startup) directory. This file includes the JDBC:OBDC driver that Siteware uses to communicate with MS SQL Server. Make sure you install this in the default directory.
When you order news from Screaming Media, you specify filters describing the type of news you want, industry segments, keywords and so forth. Each filter becomes a feed that has its own configuration files specifying field delimiter characters, escape character policies, headers and footers. Siteware "wakes up" every 15 minutes and pulls your feeds off the Screaming Media servers. It then processes the feeds in one of four ways as Hclient, DBClient, fClient or pClient.
If you're running MS SQL server or have access to a JDBC driver for your favorite database, using the DBClient database insertion method is a no-brainer (tell Screaming Media this is how you want Siteware set up). The Hclient method is quite interesting since it will write content into templates using variable substitution. Once we build our Screaming Media News object type, we could create a sample object and use it as a prototype template for use with this method. Since databases are more flexible than flat files, I've chosen to use DBClient for my own installation. fClient and pClient can also write out delimited text files but you need to parse them and process them yourself - no fun.
To store Screaming Media content temporarily, you'll need to create a table in your SQL database with the columns listed in Table 1.
I've set up a DSN in the ODBC administrator called "SyndicatedContent" that points to my "SyndicatedContent" database and defaults to the "ScreamingContent" table.
If you're getting sports scores from Screaming Media, you'll need to add additional fields to your ScreamingContent table or create a new table ("ScreamingSportsContent," perhaps!). For more information on sports scores, contact Screaming Media directly.
Screaming Media's technical staff will edit Siteware's configuration files to match the DSN and table names you've created. Extract the *.zip file they send you and run siteware.bat (located in the IMDSJServer/bin directory) from the command prompt. When you see two "SUCCESS" prompts and a blinking cursor beneath, Siteware has initialized successfully and has begun dumping content into your database. Look into your database table and you'll see the stories that meet your filter criteria.
The next step is moving the content from the syndication table into Spectra. The first thing we need to do is create a ScreamingNews object type that defines how the data will be stored in the Spectra database. This requires some "data modeling" in the Webtop. After logging in under the admin account, go to System Design > Site Object Designer > Property Definitions and create the properties in Table 2.
I've added the bCleaned property to those in the database as a flag to denote whether the default text has been reviewed to clean up any formatting inconsistencies from the feed. I also added properties that allow me to bind photographs to ScreamingNews objects. You can license photos from several places on the Internet including Reuters and the Associated Press. Spectra ships with a "core" system object type IMAGE (70E7DFB6-A67E-11D2-B3AC00C04FA35A23) that you can define as an embedded property in any object type. We'll embed an IMAGE property into the news article as well as provide a vertical alignment control variable and useimage flag.
Once the properties are created, you can actually create the object type itself (you must follow this sequence). Go to the Type Designer, create a new object type called "ScreamingNews" and map in the property definitions as indicated. Then add the method handlers given in Table 3.
Note that we didn't include "create", "edit" and "delete" methods as they are implicit and use the default handlers. If you write any of them yourself, write the edit handler - the default is quite ugly. There's no special "create" or "delete" functionality required, so there's no need to declare these methods and write your own handlers. Beware of the embedded image object - implementing embedded objects in handlers is an "advanced" skill.
This is public news, so there aren't any permissions on this object type. Applying permissions in Spectra slow down the application considerably - less so for object types than for objects themselves. Caching permissions in the CF administrator is virtually essential.
The last step in getting the data into the object store is to build the handler, syndicate_import.cfm, that manages the process (see Listing 1). This handler is nothing more than a simple query against your syndicated content database, and a loop that copies the data into the Spectra object store and then updates the foreign key in the syndicated content database. It then calls a cleanup routine to mark articles older than 30 days as "inactive" and "archived" since it's illegal for you to keep them around. Note that we've created but not coded syndicate_push and syndicate_pull. These method handlers are used at a later time to manage syndication directly between Spectra servers in the organization or with partners (you'll need to discuss licensing with Screaming Media, of course).
You can test the handler in Listing 1 by calling it from a dummy page with the following code:
objectid="Put a test object ID in here"
The syndication stream invoker (which we'll call next) doesn't care that syndicate_import doesn't require an ObjectID; however, CFA_ContentObject does care so we need to provide a dummy ObjectID in our testing code.
Once you see that this handler is working properly, you need to set up a schedule in Webtop to call it every few minutes. In System Design > Programming Objects > Syndication Streams you can easily add an event to run the syndicate_import method every 15 minutes or at whatever polling interval you've established in Siteware (see Figure 2).
While Screaming Media does channel its content providers' various feed formats into the fields listed above, providers format their stories differently so it's strongly suggested that you edit each article within Spectra prior to posting it on your site. You can see the results of your hard work in the Webtop object finder (see Figure 3).
Sample handler code and the content object types I created above are available in their entirety on the CFDJ Web site and may be installed all at once using the Spectra object type package install function. You'll also want to check the Allaire Tag Gallery and/or the Screaming Media Web site for the latest code as Screaming Media, along with other content providers, has become increasingly interested in the Spectra platform as a turnkey content subscriber and publishing solution.
Conclusion and Next Steps
In this article I've described some of the "heavy lifting" you'll need to perform to get syndicated content into your Spectra object store. Since object type definitions and properly coded handlers are reusable, you won't need to start from scratch; use and modify the source code provided here at your discretion.
It won't be long before syndicated content providers are cognizant of the huge installed base of Spectra servers. When that occurs, they may give you the ability to pull content directly into your Spectra servers by providing it over HTTP in the appropriate format. When this happens, you'll download and install an object type definition file from the content provider and set up a syndication stream handler that polls their database every so often for your content. Alternatively, they could push content directly to Spectra through the remote method invoker interface after you provide them with the appropriate username and password, your IP address and any other default values you care about (e.g., don't publish this article until I see it first!). In these scenarios you may use a syndicate_pull or syndicate_push method handler rather than the kludgy but functional syndicate_import routine provided here.
As a premium service, content providers may also map their metadata keywords to ones you provide, actually marking up the content with metadata before sending it over. They might even write Spectra news-viewer applications that use the content object types they provide. What better way to get you started with their content fast!
Syndicating graphics is going to be a bit more difficult, but easier with ColdFusion 4.5's new facilities for Base 64 encoding. For now, write or use default handlers that bind your downloaded graphics separately to articles you've syndicated and are ready to publish.
In the next article we'll explore how the Spectra syndication API allows transparent syndication of content and applications between Spectra servers.
As more and more data is generated from a variety of connected devices, the need to get insights from this data and predict future behavior and trends is increasingly essential for businesses. Real-time stream processing is needed in a variety of different industries such as Manufacturing, Oil and Gas, Automobile, Finance, Online Retail, Smart Grids, and Healthcare. Azure Stream Analytics is a fully managed distributed stream computation service that provides low latency, scalable processing of streaming data in the cloud with an enterprise grade SLA. It features built-in integration with Azur...
Oct. 5, 2015 10:00 AM EDT Reads: 721
Apps and devices shouldn't stop working when there's limited or no network connectivity. Learn how to bring data stored in a cloud database to the edge of the network (and back again) whenever an Internet connection is available. In his session at 17th Cloud Expo, Bradley Holt, Developer Advocate at IBM Cloud Data Services, will demonstrate techniques for replicating cloud databases with devices in order to build offline-first mobile or Internet of Things (IoT) apps that can provide a better, faster user experience, both offline and online. The focus of this talk will be on IBM Cloudant, Apa...
Oct. 5, 2015 09:45 AM EDT Reads: 365
SYS-CON Events announced today that HPM Networks will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. For 20 years, HPM Networks has been integrating technology solutions that solve complex business challenges. HPM Networks has designed solutions for both SMB and enterprise customers throughout the San Francisco Bay Area.
Oct. 5, 2015 09:00 AM EDT Reads: 556
As enterprises capture more and more data of all types – structured, semi-structured, and unstructured – data discovery requirements for business intelligence (BI), Big Data, and predictive analytics initiatives grow more complex. A company’s ability to become data-driven and compete on analytics depends on the speed with which it can provision their analytics applications with all relevant information. The task of finding data has traditionally resided with IT, but now organizations increasingly turn towards data source discovery tools to find the right data, in context, for business users, d...
Oct. 5, 2015 08:00 AM EDT Reads: 371
SYS-CON Events announced today that MobiDev, a software development company, will exhibit at the 17th International Cloud Expo®, which will take place November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. MobiDev is a software development company with representative offices in Atlanta (US), Sheffield (UK) and Würzburg (Germany); and development centers in Ukraine. Since 2009 it has grown from a small group of passionate engineers and business managers to a full-scale mobile software company with over 150 developers, designers, quality assurance engineers, project manage...
Oct. 5, 2015 05:00 AM EDT Reads: 685
The broad selection of hardware, the rapid evolution of operating systems and the time-to-market for mobile apps has been so rapid that new challenges for developers and engineers arise every day. Security, testing, hosting, and other metrics have to be considered through the process. In his session at Big Data Expo, Walter Maguire, Chief Field Technologist, HP Big Data Group, at Hewlett-Packard, will discuss the challenges faced by developers and a composite Big Data applications builder, focusing on how to help solve the problems that developers are continuously battling.
Oct. 5, 2015 04:00 AM EDT Reads: 350
“The Internet of Things transforms the way organizations leverage machine data and gain insights from it,” noted Splunk’s CTO Snehal Antani, as Splunk announced accelerated momentum in Industrial Data and the IoT. The trend is driven by Splunk’s continued investment in its products and partner ecosystem as well as the creativity of customers and the flexibility to deploy Splunk IoT solutions as software, cloud services or in a hybrid environment. Customers are using Splunk® solutions to collect and correlate data from control systems, sensors, mobile devices and IT systems for a variety of Ind...
Oct. 4, 2015 09:45 PM EDT Reads: 566
Clearly the way forward is to move to cloud be it bare metal, VMs or containers. One aspect of the current public clouds that is slowing this cloud migration is cloud lock-in. Every cloud vendor is trying to make it very difficult to move out once a customer has chosen their cloud. In his session at 17th Cloud Expo, Naveen Nimmu, CEO of Clouber, Inc., will advocate that making the inter-cloud migration as simple as changing airlines would help the entire industry to quickly adopt the cloud without worrying about any lock-in fears. In fact by having standard APIs for IaaS would help PaaS expl...
Oct. 4, 2015 02:30 PM EDT Reads: 397
Organizations already struggle with the simple collection of data resulting from the proliferation of IoT, lacking the right infrastructure to manage it. They can't only rely on the cloud to collect and utilize this data because many applications still require dedicated infrastructure for security, redundancy, performance, etc. In his session at 17th Cloud Expo, Emil Sayegh, CEO of Codero Hosting, will discuss how in order to resolve the inherent issues, companies need to combine dedicated and cloud solutions through hybrid hosting – a sustainable solution for the data required to manage I...
Oct. 4, 2015 02:00 PM EDT Reads: 412
SYS-CON Events announced today that IBM Cloud Data Services has been named “Bronze Sponsor” of SYS-CON's 17th Cloud Expo, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. IBM Cloud Data Services offers a portfolio of integrated, best-of-breed cloud data services for developers focused on mobile computing and analytics use cases.
Oct. 4, 2015 01:00 PM EDT Reads: 552
SYS-CON Events announced today that ProfitBricks, the provider of painless cloud infrastructure, will exhibit at SYS-CON's 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. ProfitBricks is the IaaS provider that offers a painless cloud experience for all IT users, with no learning curve. ProfitBricks boasts flexible cloud servers and networking, an integrated Data Center Designer tool for visual control over the cloud and the best price/performance value available. ProfitBricks was named one of the coolest Clo...
Oct. 4, 2015 01:00 PM EDT Reads: 714
Learn how IoT, cloud, social networks and last but not least, humans, can be integrated into a seamless integration of cooperative organisms both cybernetic and biological. This has been enabled by recent advances in IoT device capabilities, messaging frameworks, presence and collaboration services, where devices can share information and make independent and human assisted decisions based upon social status from other entities. In his session at @ThingsExpo, Michael Heydt, founder of Seamless Thingies, will discuss and demonstrate how devices and humans can be integrated from a simple clust...
Oct. 4, 2015 12:00 PM EDT Reads: 617
You have your devices and your data, but what about the rest of your Internet of Things story? Two popular classes of technologies that nicely handle the Big Data analytics for Internet of Things are Apache Hadoop and NoSQL. Hadoop is designed for parallelizing analytical work across many servers and is ideal for the massive data volumes you create with IoT devices. NoSQL databases such as Apache HBase are ideal for storing and retrieving IoT data as “time series data.”
Oct. 4, 2015 10:45 AM EDT Reads: 439
Mobile messaging has been a popular communication channel for more than 20 years. Finnish engineer Matti Makkonen invented the idea for SMS (Short Message Service) in 1984, making his vision a reality on December 3, 1992 by sending the first message ("Happy Christmas") from a PC to a cell phone. Since then, the technology has evolved immensely, from both a technology standpoint, and in our everyday uses for it. Originally used for person-to-person (P2P) communication, i.e., Sally sends a text message to Betty – mobile messaging now offers tremendous value to businesses for customer and empl...
Oct. 4, 2015 08:30 AM EDT Reads: 155
SYS-CON Events announced today that Cloud Raxak has been named “Media & Session Sponsor” of SYS-CON's 17th Cloud Expo, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Raxak Protect automates security compliance across private and public clouds. Using the SaaS tool or managed service, developers can deploy cloud apps quickly, cost-effectively, and without error.
Oct. 3, 2015 01:15 PM EDT Reads: 579
Who are you? How do you introduce yourself? Do you use a name, or do you greet a friend by the last four digits of his social security number? Assuming you don’t, why are we content to associate our identity with 10 random digits assigned by our phone company? Identity is an issue that affects everyone, but as individuals we don’t spend a lot of time thinking about it. In his session at @ThingsExpo, Ben Klang, Founder & President of Mojo Lingo, will discuss the impact of technology on identity. Should we federate, or not? How should identity be secured? Who owns the identity? How is identity ...
Oct. 3, 2015 11:00 AM EDT Reads: 409
SYS-CON Events announced today that Solgeniakhela will exhibit at SYS-CON's 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Solgeniakhela is the global market leader in Cloud Collaboration and Cloud Infrastructure software solutions. Designed to “Bridge the Gap” between Personal and Professional Social, Mobile and Cloud user experiences, our solutions help large and medium-sized organizations dramatically improve productivity, reduce collaboration costs, and increase the overall enterprise value by bringing ...
Oct. 2, 2015 10:00 PM EDT Reads: 548
Sensors and effectors of IoT are solving problems in new ways, but small businesses have been slow to join the quantified world. They’ll need information from IoT using applications as varied as the businesses themselves. In his session at @ThingsExpo, Roger Meike, Distinguished Engineer, Director of Technology Innovation at Intuit, will show how IoT manufacturers can use open standards, public APIs and custom apps to enable the Quantified Small Business. He will use a Raspberry Pi to connect sensors to web services, and cloud integration to connect accounting and data, providing a Bluetooth...
Oct. 2, 2015 03:30 PM EDT Reads: 391
SYS-CON Events announced today that Micron Technology, Inc., a global leader in advanced semiconductor systems, will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Micron’s broad portfolio of high-performance memory technologies – including DRAM, NAND and NOR Flash – is the basis for solid state drives, modules, multichip packages and other system solutions. Backed by more than 35 years of technology leadership, Micron's memory solutions enable the world's most innovative computing, consumer,...
Oct. 2, 2015 07:00 AM EDT Reads: 560
Nowadays, a large number of sensors and devices are connected to the network. Leading-edge IoT technologies integrate various types of sensor data to create a new value for several business decision scenarios. The transparent cloud is a model of a new IoT emergence service platform. Many service providers store and access various types of sensor data in order to create and find out new business values by integrating such data.
Oct. 1, 2015 02:30 PM EDT Reads: 402