Event Type and Serialization Creating Oracle CEP Event Types
2.1.3.2 Event Types Specified as java.util.Map
When you specify the properties of the event type declaratively in the EPN assembly file as a java.util.Map, you may use any Java type for its properties. However, you specify the event type as either: ■ The fully qualified name of a Java class that must conform to the same rules as Class.forName and must be available in the applications class-loader. ■ A Java primitive for example, int or float. You may specify an array by appending the characters [] to the event type name. Example 2–2 shows how to use these types: Example 2–2 Specifying Java Data Types for java.util.Map Event Type Properties wlevs:event-type-repository wlevs:event-type type-name=AnotherEvent wlevs:property entry key=name value=java.lang.String entry key=employeeId value=java.lang.Integer[] entry key=salary value=float entry key=projectIds value=short[] wlevs:property wlevs:event-type wlevs:event-type-repository For more information, see Section 2.5.1, How to Create an Oracle CEP Event Type as a java.util.Map .2.1.3.3 Event Types Specified as a Tuple
When you specify the properties of the event type declaratively in the EPN assembly file as a tuple, you may use any CQL primitive types or Java types. Example 2–3 shows the use of different types: Example 2–3 Specifying com.bea.welvs.ede.api.Type Data Types for Tuple Event Type Properties wlevs:event-type-repository wlevs:event-type type-name=SimpleEvent wlevs:properties wlevs:property name=id type=char length=1000 wlevs:property name=msg type=char wlevs:property name=count type=double wlevs:property name=time_stamp type=timestamp wlevs:properties wlevs:event-type ... wlevs:event-type-repository For more information, see Section 2.3, Creating an Oracle CEP Event Type as a Tuple . Overview of Oracle CEP Events 2-52.1.3.4 Event Types for use With a Database Table Source
When you specify the properties of an event type as any of a JavaBean, Java class, java.util.Map, or tuple for use with a relational database table, you must observe the following additional JDBC type restrictions: ■ Table 10–2, EPN Assembly File event-type Element Property Attributes ■ Table 10–3, SQL Column Types and Oracle CEP Type Equivalents For more information, see: ■ Section 10.3, Configuring an Oracle CQL Processor Table Source ■ Section 2.1.3, Event Type Data Types2.1.3.5 Event Types for use With the csvgen Adapter
When you specify the properties of an event type as any of a JavaBean, Java class, java.util.Map, or tuple for use with the csvgen adapter, you may only use the data types that Table 2–1 describes. For more information, see: ■ Section 25.4, Creating a Data Feed File ■ Section 2.1.3.1, Event Types Specified as JavaBean or Java Class ■ Section 2.1.3.3, Event Types Specified as a Tuple2.1.4 Creating Oracle CEP Event Types
Event types define the properties of the events that are handled by Oracle CEP applications. Adapters receive incoming events from different event sources, such as JMS, or financial market data feeds. You must define these events by an event type before a processor is able to handle them. You then use these event types in the adapter and POJO Java code, as well as in the Oracle CQL and EPL rules you associate with the processors. This section describes: ■ Section 2.2, Creating an Oracle CEP Event Type as a JavaBean ■ Section 2.3, Creating an Oracle CEP Event Type as a Tuple ■ Section 2.4, Creating an Oracle CEP Event Type as a Java Class ■ Section 2.5, Creating an Oracle CEP Event Type as a java.util.Map Table 2–1 csvgen Adapter Types Type Usage char Single or multiple character values. Use for both char and java.lang.String values. Optionally, you may used the length attribute to specify the maximum length of the char value as Example 2–3 shows for the property with name id. The default length is 256 characters. If you need more than 256 characters you should specify an adequate length. int Numeric values in the range that java.lang.Integer specifies. long Numeric values in the range that java.lang.Long specifies. double Numeric values in the range that java.lang.Double specifies. 2-6 Oracle Complex Event Processing Developers Guide ■ Section 2.6, Using an Event Type Builder Factory ■ Section 2.7, Accessing the Event Type Repository ■ Section 2.8, Sharing Event Types Between Application Bundles For more information, see Section 2.1, Oracle CEP Event Types .2.2 Creating an Oracle CEP Event Type as a JavaBean
You can create and register an Oracle CEP event type as a JavaBean. This is the preferred approach. Follow standard JavaBeans programming guidelines. See the JavaBeans Tutorial at http:java.sun.comdocsbookstutorialjavabeans for additional details. Oracle recommends that, if possible, you make your event type JavaBeans immutable to improve performance. For more information, see Section 2.1.1, Event Type Instantiation and Immutability . When you design your event, you must restrict your design to the even data types that Section 2.1.3.1, Event Types Specified as JavaBean or Java Class describes. This topic describes: ■ Section 2.2.1, How to Create an Oracle CEP Event Type as a JavaBean Using the Event Type Repository Editor ■ Section 2.2.2, How to Create an Oracle CEP Event Type as a JavaBean Manually2.2.1 How to Create an Oracle CEP Event Type as a JavaBean Using the Event Type Repository Editor
This procedure describes how to create and register an Oracle CEP event type as a JavaBean using the Oracle CEP IDE for Eclipse event type repository editor. For more information about the Oracle CEP IDE for Eclipse, see Example 3, Overview of the Oracle CEP IDE for Eclipse . Alternatively, you can create and register your event type as a JavaBean manually see Section 2.2.2, How to Create an Oracle CEP Event Type as a JavaBean Manually . To create an Oracle CEP event type as a Java bean using the event type repository editor: 1. Create a JavaBean class to represent your event type. Follow standard JavaBeans programming guidelines. See the JavaBeans Tutorial at http:java.sun.comdocsbookstutorialjavabeans for additional details. Oracle recommends that, if possible, you make your event type JavaBeans immutable to improve performance. For more information, see Section 2.1.1, Event Type Instantiation and Immutability . When you design your event, you must restrict your design to the even data types that Section 2.1.3.1, Event Types Specified as JavaBean or Java Class describes. Example 2–5 shows the MarketEvent which is implemented by the com.bea.wlevs.example.algotrading.event.MarketEvent class. Overview of Oracle CEP Events 2-7 Example 2–4 MarketEvent Class package com.bea.wlevs.example.algotrading.event; import java.util.Date; public final class MarketEvent { private final Long timestamp; private final String symbol; private final Double price; private final Long volume; private final Long latencyTimestamp; public MarketEventfinal Long timestamp, final String symbol, final Double price, final Long volume, final Long latencyTimestamp { this.timestamp = timestamp; this.symbol = symbol; this.price = price; this.volume = volume; this.latencyTimestamp = latencyTimestamp; } public Double getPrice { return price; } public String getSymbol { return symbol; } public Long getTimestamp { return timestamp; } public Long getLatencyTimestamp { return latencyTimestamp; } public Long getVolume { return volume; } } 2. Compile the JavaBean that represents your event type. 3. Open the EPN in the Oracle CEP IDE for Eclipse. The EPN editor opens as Figure 2–1 shows.Parts
» Oracle Fusion Middleware Online Documentation Library
» Adapter Components of the Oracle CEP Event Processing Network
» Channel Processor Components of the Oracle CEP Event Processing Network
» Event Bean Components of the Oracle CEP Event Processing Network
» Spring Bean Cache Components of the Oracle CEP Event Processing Network
» Table Nested Stages Components of the Oracle CEP Event Processing Network
» Foreign Stages Components of the Oracle CEP Event Processing Network
» Streams and Relations Transmitting Events in the EPN: Stream and Relation Sources and Sinks
» Transmitting Events in the EPN: Examples
» EPN Assembly File Overview of the Oracle CEP Programming Model
» Component Configuration Files Overview of the Oracle CEP Programming Model
» High Availability and Scalability
» Oracle CEP calls the ResumableBean.beforeResume method on all
» For each bean that implements RunnableBean, Oracle CEP starts it running in a
» Application state is now RUNNING.
» User Action: Uninstall Application
» User Action: Update Application
» User Action: Calling Methods of Stream and Relation Sources and Sinks
» Oracle CEP APIs Overview of the Oracle CEP Programming Model
» Creating an Oracle CEP Application
» Static Resource Names Static Resource Injection
» Dynamic Resource Names Static Resource Injection
» Dynamic Resource Injection Dynamic Resource Lookup Using JNDI
» Next Steps Oracle Fusion Middleware Online Documentation Library
» Event Type Instantiation and Immutability
» Event Types Specified as JavaBean or Java Class
» Event Types Specified as java.util.Map Event Types Specified as a Tuple
» Event Types for use With a Database Table Source
» Event Types for use With the csvgen Adapter
» Event Type and Serialization Creating Oracle CEP Event Types
» How to Create an Oracle CEP Event Type as a JavaBean Using the Event Type Repository Editor
» How to Create an Oracle CEP Event Type as a JavaBean Manually
» How to Create an Oracle CEP Event Type as a Tuple Using the Event Type Repository Editor
» How to Create an Oracle CEP Event Type as a Tuple Manually
» How to Create an Oracle CEP Event Type as a Java Class Manually
» How to Create an Oracle CEP Event Type as a java.util.Map
» Using an Event Type Builder Factory
» Sharing Event Types Between Application Bundles
» Installing the Latest Oracle CEP IDE for Eclipse
» Installing the Oracle CEP IDE for Eclipse Distributed With Oracle CEP
» Configuring Eclipse Oracle Fusion Middleware Online Documentation Library
» How to Create an Oracle CEP Project
» Oracle CEP Project Overview Select File New Other.
» How to Export an Oracle CEP Project
» In the Binary Build area, check the resources you want exported with your
» How to Add a Standard JAR File to an Oracle CEP Project
» How to Export a Package How to Import a Package
» How to Create a Remote Oracle CEP Server and Server Runtime
» How to Create an Oracle CEP Server Runtime
» How to Start a Local Oracle CEP Server
» How to Deploy an Application to an Oracle CEP Server
» How to Configure Connection and Control Settings for Oracle CEP Server
» How to Configure Domain Runtime Settings for Oracle CEP Server
» How to Start the Oracle CEP Visualizer from Oracle CEP IDE for Eclipse
» Right-click a server in the Servers view and select Debug.
» How to Open the EPN Editor from a Project Folder
» How to Open the EPN Editor from a Context or Configuration File
» Flow Representation Filtering EPN Editor Overview
» Zooming Layout Showing and Hiding Unconnected Beans
» Printing and Exporting to an Image Configuration Badging
» Link Specification Location Indicator
» Nested Stages EPN Editor Overview
» Event Type Repository Editor
» Hyperlinking in Component Configuration and EPN Assembly Files
» Hyperlinking in Oracle CQL Statements
» Type the keyboard short cut Ctrl-Alt-T.
» Right-click on an empty portion of the EPN Editor surface and select New from
» Laying Out Nodes Renaming Nodes Deleting Nodes
» Conversion Between JMS Messages and Event Types
» JMS Service Providers Outbound JMS Adapter
» How to Configure a JMS Adapter Using the Oracle CEP IDE for Eclipse
» How to Configure a JMS Adapter Manually
» How to Configure a JMS Adapter for Oracle WebLogic Server JMS Manually
» How to Configure a JMS Adapter for Tibco EMS JMS Manually
» How to Create a Custom Converter for the Inbound JMS Adapter
» How to Create a Custom Converter for the Outbound JMS Adapter
» How to Encrypt Passwords in the JMS Adapter Component Configuration File
» JMS Inbound Adapter EPN Assembly File Configuration
» JMS Outbound Adapter EPN Assembly File Configuration
» JMS Inbound Adapter Component Configuration
» JMS Outbound Adapter Component Configuration
» Local Publishing Overview of the Built-In Pub-Sub Adapter for Publishing
» Remote Publishing Overview of the Built-In Pub-Sub Adapter for Publishing
» Overview of the Built-In Pub-Sub Adapter for Subscribing
» Converting Between JSON Messages and Event Types
» How to Configure an HTTP Pub-Sub Adapter Using the Oracle CEP IDE for Eclipse
» How to Configure an HTTP Pub-Sub Adapter Manually
» HTTP Pub-Sub Adapter for Publising EPN Assembly File Configuration
» HTTP Pub-Sub Adapter for Subscribing EPN Assembly File Configuration
» HTTP Pub-Sub Adapter for Publising Component Configuration
» HTTP Pub-Sub Adapter for Subscribing Component Configuration
» Channels as Streams Channels Representing Streams and Relations
» Channels as Relations Channels Representing Streams and Relations
» System-Timestamped Channels Application-Timestamped Channels
» Controlling Which Queries Output to a Downstream Channel: selector
» Batch Processing Channels Overview of Channel Configuration
» EventPartitioner Channels Overview of Channel Configuration
» How to Configure a System-Timestamped Channel Using Oracle CEP IDE for Eclipse
» How to Configure an Application-Timestamped Channel Using Oracle CEP IDE for Eclipse
» How to Create a Channel Component Configuration File Manually
» Channel Component Configuration File Channel EPN Assembly File
» How to Configure an Oracle CQL Processor Using Oracle CEP IDE for Eclipse
» How to Create an Oracle CQL Processor Component Configuration File Manually
» How to Configure an Oracle CQL Processor Table Source Using Oracle CEP IDE for Eclipse
» Oracle CQL Processor Component Configuration File
» Oracle CQL Processor EPN Assembly File
» Configuring an Oracle CQL Processor Cache Source Overview of EPL Processor Component Configuration
» How to Configure an EPL Processor Manually
» Configuring an EPL Processor Cache Source
» EPL Processor Component Configuration File
» EPL Processor EPN Assembly File
» Use Case: Publishing Events to a Cache
» Use Case: Consuming Data From a Cache
» Use Case: Updating and Deleting Data in a Cache
» Use Case: Using a Cache in a Multi-Server Domain
» Additional Caching Features Overview of Oracle CEP Cache Configuration
» Caching APIs Overview of Oracle CEP Cache Configuration
» Specifying the Key Used to Index an Oracle CEP Local Cache
» Configuring an Oracle CEP Local Cache as an Event Source
» Configuring an Oracle CEP Local Cache Loader
» Configuring an Oracle CEP Local Cache Store
» The coherence-cache-config.xml File
» The tangosol-coherence-override.xml File
» Specifying the Key Used to Index an Oracle Coherence Cache
» Configuring an Oracle Coherence Cache as an Event Source
» Configuring an Oracle Coherence Cache Loader
» Configuring an Oracle Coherence Cache Store
» Configuring a Third-Party Caching System and Cache
» How to Access a Cache From an Oracle CQL Statement
» How To Access a Cache From an EPL Statement
» Accessing a Cache From an Adapter
» How to Access a Cache With JMX Using Oracle CEP Visualizer
» How to Access a Cache With JMX Using Java
» Default Persistent Event Store
» Custom Persistent Event Store
» Persistent Event Store Schema
» Querying Stored Events Overview of Configuring Event Record and Playback
» Configuring an Event Store for Oracle CEP Server
» Configuring a Component to Record Events
» Configuring a Component to Playback Events
» Starting and Stopping the Record and Playback of Events
» Description of the Berkeley Database Schema
» Accessing a Cache From an EPL User-Defined Function Creating a Custom Event Store Provider
» Custom Adapters as Event Sources Custom Adapters as Event Sinks
» How to Implement a Custom Adapter Using Ant
» Implementing a Custom Adapter as an Event Source
» Implementing a Custom Adapter as an Event Sink
» Implementing a Custom Adapter Factory
» How to Pass Static Login Credentials to the Data Feed Provider
» How to Pass Dynamic Login Credentials to the Data Feed Provider
» Configuring the Custom Adapter Component Configuration File
» Custom Event Beans as Event Sources
» Custom Event Beans as Event Sinks
» Implementing a Custom Event Bean as an Event Source
» Implementing a Custom Event Bean as an Event Sink
» Configuring the Custom Event Bean Component Configuration File
» Implementing a Custom Spring Bean as an Event Source
» Implementing a Custom Spring Bean as an Event Sink
» Declaring the Custom Spring Bean Components in your Application
» How to Expose an Oracle CEP Application as a Web Service
» How to Configure Oracle JDBC Data Cartridge Application Context
» Extending Component Configuration Using Annotations
» Extending Component Configuration Using an XSD
» How to Extend Component Configuration Using Annotations
» Creating the XSD Schema File
» Lifecycle Callback Annotations Lifecycle
» Rejoining the High Availability Multi-Server Domain
» Deployment Group and Notification Group
» High Availability Input Adapter
» Buffering Output Adapter High Availability Components
» Broadcast Output Adapter High Availability Components
» Correlating Output Adapter ActiveActiveGroupBean
» High Availability and Oracle Coherence
» Simple Failover Choosing a Quality of Service
» Simple Failover with Buffering
» Light-Weight Queue Trimming Choosing a Quality of Service
» Primary Oracle CEP High Availability Use Case
» Select the Minimum High Availability Your Application can Tolerate
» Use Oracle CEP High Availability Components at All Ingress and Egress Points
» Choose an Adequate warm-up-window Time Ensure Applications are Idempotent
» Source Event Identity Externally Understand the Importance of Event Ordering
» Range-Based Windows Oracle CQL Query Restrictions
» Tuple-Based Windows Oracle CQL Query Restrictions
» Partitioned Windows Oracle CQL Query Restrictions
» Sliding Windows Oracle CQL Query Restrictions
» DURATION Clause and Non-Event Detection
» Prefer Application Time Oracle CQL Query Restrictions
» How to Configure Simple Failover
» How to Configure Simple Failover With Buffering
» How to Configure Light-Weight Queue Trimming
» How to Configure Precise Recovery With JMS
» High Availability Input Adapter EPN Assembly File Configuration
» High Availability Input Adapter Component Configuration File Configuration
» Broadcast Output Adapter EPN Assembly File Configuration
» Broadcast Output Adapter Component Configuration File Configuration
» Correlating Output Adapter EPN Assembly File Configuration
» Correlating Output Adapter Component Configuration File Configuration
» How to Configure Scalability With the Default Channel EventPartitioner
» How to Configure Scalability With a Custom Channel EventPartitioner
» How to Configure Scalability in a JMS Application Without Oracle CEP High Availability
» How to Configure Scalability in a JMS Application With Oracle CEP High Availability
» How to Configure the ActiveActiveGroupBean Group Pattern Match
» Applications Overview of Application Assembly and Deployment
» Private Application Dependencies Application Dependencies
» Shared Application Dependencies Application Dependencies
» Library Directory Application Libraries
» Library Extensions Directory Application Libraries
» Creating Application Libraries Application Libraries
» Deployment and Deployment Order
» Configuration History Management Overview of Application Assembly and Deployment
» Assembling an Oracle CEP Application Using Oracle CEP IDE for Eclipse
» Creating the MANIFEST.MF File
» Assembling Applications With Foreign Stages
» How to Assemble a Custom Adapter in its Own Bundle
» How to Assemble a Custom Event Bean in its Own Bundle
» Click OK. How to Configure an Absolute Path
» How to Update an Application Library Using Oracle CEP IDE for Eclipse
» How to View an Application Library Using the Oracle CEP Visualizer
» Message Catalog Hierarchy Using Message Catalogs With Oracle CEP Server
» Guidelines for Naming Message Catalogs
» Using Message Arguments Using Message Catalogs With Oracle CEP Server
» Message Catalog Formats Using Message Catalogs With Oracle CEP Server
» Message Catalog Localization Using Message Catalogs With Oracle CEP Server
» How to Parse a Message Catalog to Generate Logger and TextFormatter Classes for Localization
» How to Deploy an Oracle CEP Application Using Oracle CEP IDE for Eclipse
» How to Deploy an Oracle CEP Application Using Oracle CEP Visualizer
» How to Deploy an Oracle CEP Application Using the Deployer Utility
» Overview of Testing Applications With the Load Generator and csvgen Adapter
» Configuring and Running the Load Generator Utility
» Creating a Load Generator Property File
» Configuring the csvgen Adapter in Your Application
» Event Inspector HTTP Publish-Subscribe Channel and Server
» How to Trace Events Using Oracle CEP Visualizer
» Scalability Using the ActiveActiveGroupBean
» Host Configuration High Availability Performance Tuning
» High Availability Input Adapter and Quality of Service
» High Availability Input Adapter Configuration
» Broadcast Output Adapter Configuration
» Oracle Coherence Heartbeat Frequency
» Oracle Coherence Serialization Oracle Coherence Performance Tuning Options
» Adapter Lifecycle Annotations OSGi Service Reference Annotations
» Example com.bea.wlevs.configuration.Activate
» Example com.bea.wlevs.configuration.Rollback
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