![]() ![]() ![]() In 12c, we can easily refactor many things, including the names of Reference Bindings. In 11g that would have given me a headache (or I would probably have recreated the adapter binding, afraid to not be able to correctly manually edit all occurrences of the string Retreive). I have just realized that I have mistyped the name of the second adapter binding: Retreive instead of Retrieve. The Coherence Adapter reference (for reading stuff from the cache) is created.ĭrag a second Coherence Adapter to the References lane, to create the Adapter binding to write data to the cache. Select element processResponse from the HelloSlowWorld.xsd as the schema element. Press Next.Ī popup appears with a message, instructing us on setting the value for the key at run time using the JCA header property. Set the Key Type to String and leave the Key field empty. Uncheck the checkbox for auto generating the key. This cache is preconfigured – ready to use for straightforward situations where no special configuration is required. In step 4 of the wizard, set Cache Type to XML. This name corresponds with one of the connections configured in the Coherence Adapter deployment in the Integrated WebLogic Server. Set or select the JNDI name of the Coherence connection to eis/Coherence/Local. Set the name of the adapter binding to WriteToCache. The Adapter Configuration wizard appears. Drag the Coherence Adapter from the component palette to the References swimlane. Enter: the cross instance memory, implemented using Coherence and accessed using the Coherence Adapter. No matter how often we make the call, the response time stays over 5 seconds, even if the response is the same each time. With the following call log (just over 5 seconds): After 5 seconds, it will receive the greeting, which it can then return itself:Īnd run from the automatically opened HTTP Analyzer The first process will call this second process. It waits for 5 seconds, then it assigns a greeting value to the output variable: This second process will create the hello world greeting – but it will do so quite slowly.Įdit the second, slow process. Wire the first BPEL Process to the second. Input is string, output is string:Ĭreate a second BPEL process based on the same WSDL: In this article, I will show a simple example of creating a SOA composite application that uses the Coherence Adapter to speed up a process more than 100 times (although admittedly this could only happen because I first made it extremely slow).Ĭreate BPEL component with simple synchronous interface, exposed as SOAP Web Service. The Coherence adapter enables you to perform useful coherence operations such as adding an item to a Coherence cache, obtaining an item from a Coherence cache, removing an item and querying from a Coherence cache. Objects in the cache can either be of XML or POJO (Plain Old Java Object) type. The Coherence Adapter is a JCA 1.5-compliant resource adapter for Oracle Coherence. Using values from the cache may actually mean saving money in the case that calculating the result involves invoking paid for services.Ĭoherence provides replicated and distributed (partitioned) data management and caching services on top of a reliable, highly scalable peer-to-peer clustering protocol. By reusing them, the results are obtained much faster and without any load on the enterprise resources that would otherwise have to reproduce them. The cache is accessible across service executions and process instances, as well as across cluster nodes.Ī Coherence Cache is typically used to reuse results: values that have been calculated before at potentially some cost to the back end system. The cache is accessed like a big map: using a key, an object is saved to and retrieved from the cache. Fully declaratively and with very little trouble, data can be put on a Coherence grid (aka cache) and read from that cache. This JCA adapter makes it easy for a Service Bus business service or a SOA composite application to interact with a Coherence memory grid. One of the new adapters shipped with SOA Suite 12c is the Coherence Adapter. ![]()
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