Java mule
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This document discusses different ways to use Java components in Mule, including: 1. Java components allow writing custom Java code and transformations when standard Mule transformers cannot be used. 2. A Java component can reference a class implementing Callable to access the Mule event context and payload. 3. A Java component can use a singleton object factory to share a single instance of a class across multiple requests rather than creating a new instance each time. Properties can be passed into the shared class instance. 4. The Invoke component invokes methods on Java classes, with a bean configured in global elements to reference the class and methods to call.
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Mule splitters
Mule splittersGandham38 The document discusses different types of routers and splitters in Mule flows. It explains that splitters split messages to be processed in parallel, then aggregated. It provides examples of a collection splitter splitting a list object, with each item routed to another flow and resequenced before aggregation. A message chunk splitter chunks a message into fixed-size segments, routing each to another flow before aggregation. Scatter-gather is also described as sending a message to multiple endpoints concurrently and aggregating the responses.
Mule system properties
Mule system propertiesGandham38 The document discusses mule system properties and the use of properties files, which consist of key-value pairs for configuration and localization. It highlights how properties can be set using command line, environment variables, and within the mule project files, with a specified order of prioritization. Observations indicate that properties in mule-app.properties are given the highest priority, followed by global variables, runtime arguments, environment variables, and other property files.
Mule properties
Mule propertiesGandham38 Mule properties files allow configuration values to be externalized and parameterized. Property placeholders can be used to reference values defined in properties files from within Mule configurations. Values for placeholders can come from global properties, property files, environment variables, or runtime arguments, with earlier sources taking priority over later ones. Properties files provide a way to manage configurations across different environments like development, testing, and production.
Mule batch
Mule batchGandham38 The document discusses batch processing in Mule, which processes large numbers of messages in batches. It describes the three phases of batch processing: input, process records, and on complete. The input phase prepares a collection object with the input messages. The process records phase processes each record in the collection individually and in parallel. The on complete phase summarizes the flow by providing counts of successful, failed, and total records. An example is provided of transforming a CSV file to XML using batch processing with two batch steps - one to transform with a datamapper and another to write the XML to a file in batches of 5 records.
Mule jms queues
Mule jms queuesGandham38 The document provides an overview of the Java Message Service (JMS) and its two messaging models: queues for point-to-point and topics for publish-subscribe communication. It outlines the configuration steps to implement a JMS queue using ActiveMQ with Mule, detailing components like importing libraries, creating connectors, and enqueuing messages. Additionally, it describes how to set up a JMS receiver to process messages from the queue and verify the implementation through the ActiveMQ admin page.
Mule jms-topics
Mule jms-topicsGandham38 The document provides an overview of Java Message Service (JMS), detailing the point-to-point and publish/subscribe messaging models, as well as Mule's JMS transport configuration. It offers step-by-step instructions for setting up JMS publisher and subscriber flows using HTTP endpoints and ActiveMQ. Additionally, it discusses serialization and deserialization processes for sharing objects via JMS, accompanied by example configurations for message flows.
Mule enricher component
Mule enricher component Gandham38 The document explains the functionality of the Mule Enricher component, which adds additional information to messages by transforming them using data from external systems without modifying the original payload. It illustrates how to use the enricher to extract data, like state information from a zip code, and save it in flow variables. Additionally, it describes advanced use cases where only specific parts of the external response are used for enrichment.
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Java mule
- 2. Java Custom Component • Java components are used write our custom code and custom transformation. java transformers will be used when we cannot transform a message using available Mule transformers. In this example, following components are explained. • Java Component • Java component with singleton • Invoke Component • Java Transformer
- 3. • Reflection Entry Point Resolver • Annotated Entry Point Resolver • Invoking a service using java component Below is the main flow which exposes a HTTP service and refers to multiple sub flows one after another to cover all above concepts.
- 4. Java Component: Java component is used to refer a class which has complex code. Example: Below is sub flow named 'simple-java-component' which has Set Payload and java component. 'Set Payload' component sets payload as "Custom Payload".
- 5. • Java component is reffered to custom made class (UsingCallable) which implements Callable interface. This class is used to print current payload, size of inbound properties and size of invocation properties.
- 6. Above class implements Callable interface. it has onCall(MuleEventContext eventContext) overriden method. This method provides MuleEventContext . We can get all the data using MuleContext instace as shown in above code snippet.Data-Mapper.
- 7. Java Component with Singleton: The singleton object factory does not create a new instance for each request; instead, the instance is shared. Example: Drag java component and double click on the java component to bring up properties. Click "+" symbol next to the 'Object' field Select “core:singleton-object” and click "next".
- 8. Click on "..." button and select class "com.techm.javacustomcomponents.UsingSingletonObject"
- 9. • Click on "Advanced" tab and create following three properties using "+" as shown below and click on Finish. • name • dept • location Same properties with same names need to be created along with setters and getters in "UsingSingletonObject" class. So that, specified properties values in java component are assigned into java class properties. Below is the code to create map object with these three properties.
- 13. • A bean needs to be created in global elements to use Invoke component. Create a bean which refers to a custom made java class in global elements. In "Global Elements" tab click on "Create" button. • Click on "..." symbol next to "Class" field to select a java custom made class. Provide some meaningful names in "ID" and "Name" fields. Click on OK button.
- 14. • Drag a invoke component and double click on the component to bring up the properties. Fill the required fields as shown below.
- 16. • Name Any meaningful name • Object Ref "ID" value of bean which is created earlier • Method Method name which needs to be invoked • Method Arguments Values of method arguments • In the same way two more invoke components are created for two methods (substract and multiply)
- 17. •Thank You All