Programmers Guide Sybase Event Stream Processor 5.1 SP01 DOCUMENT ID: DC01612-01-0511-01 LAST REVISED: November 2012 Copyright © 2012 by Sybase, Inc
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Programmers Guide Sybase Event Stream Processor 5.1 SP01 DOCUMENT ID: DC01612-01-0511-01 LAST REVISED: November 2012 Copyright © 2012 by Sybase, Inc. All rights reserved. This publication pertains to Sybase software and to any subsequent release until otherwise indicated in new editions or technical notes. Information in this document is subject to change without notice. The software described herein is furnished under a license agreement, and it may be used or copied only in accordance with the terms of that agreement. Upgrades are provided only at regularly scheduled software release dates. No part of this publication may be reproduced, transmitted, or translated in any form or by any means, electronic, mechanical, manual, optical, or otherwise, without the prior written permission of Sybase, Inc. Sybase trademarks can be viewed at the Sybase trademarks page at http://www.sybase.com/detail?id=1011207. 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Contents CHAPTER 1: Introduction ...............................................1 Data-Flow Programming .......................................................1 Continuous Computation Language ....................................2 SPLASH ..................................................................................3 Authoring Methods ................................................................3 CHAPTER 2: CCL Project Basics ...................................5 Events .....................................................................................5 Operation Codes ....................................................................5 Streams ...................................................................................6 Windows .................................................................................7 Retention ........................................................................7 Named Windows ...........................................................10 Unnamed Windows .......................................................11 Delta Streams .......................................................................12 Comparing Streams, Windows, and Delta Streams .........12 Input/Output/Local ...............................................................13 Implicit Columns ..................................................................15 Schemas ...............................................................................15 Stores ....................................................................................16 CCL Continuous Queries ....................................................17 Adapters ...............................................................................18 Order of Elements ................................................................19 CHAPTER 3: Developing a Project in CCL ..................21 CHAPTER 4: CCL Language Components .................23 Datatypes ..............................................................................23 Programmers Guide iii Contents Intervals ........................................................................26 Operators ..............................................................................27 Expressions .........................................................................31 CCL Comments ....................................................................32 Case-Sensitivity ...................................................................33 CHAPTER 5: CCL Query Construction .......................35 Filtering .................................................................................35 Splitting Up Incoming Data .................................................36 Unions ...................................................................................37 Example: Merging Data from Streams or Windows ......38 Joins .....................................................................................38 Key Field Rules .............................................................40 Join Examples: ANSI Syntax ........................................41 Join Example: Comma-Separated Syntax ....................43 Pattern Matching ..................................................................44 Aggregation ..........................................................................44 CHAPTER 6: Advanced CCL Programming Techniques .................................................................47 Declare Blocks .....................................................................47 Typedefs .......................................................................48 Parameters ...................................................................48 Variables .......................................................................49 Declaring Project Variables, Parameters, Datatypes, and Functions ...........................................................51 Flex Operators .....................................................................52 Modularity .............................................................................52 Module Creation and Usage .........................................53 Example: Creating and Using Modules ........................53 Example: Parameters in Modules .................................54 Data Recovery ......................................................................56 Log Store Optimization Techniques ..............................57 Error Streams .......................................................................57 iv Sybase Event Stream Processor Contents Monitoring Streams for Errors .......................................59 CHAPTER 7: Writing SPLASH Routines .....................61 Internal Pulsing ....................................................................61 Order Book ...........................................................................62 CHAPTER 8: Integrating SPLASH into CCL ................65 Access to the Event .............................................................65 Access to Input Streams .....................................................65 Output Statement .................................................................67 Notes on Transactions ........................................................67 CHAPTER 9: Using SPLASH in Projects .....................69 CHAPTER 10: PowerDesigner for Event Stream Processor ...................................................................73 Getting Started .....................................................................73 Data Modeling Scenarios ............................................. 73 Sample PowerDesigner Project ....................................74 Opening the Sample Project ................................74 Learning More About PowerDesigner ...........................74 Data Model ............................................................................74 ESP Schema Logical Data Model .................................75 Finding an Object in a Diagram ....................................75 Data Model Tables ........................................................75 Extensions ....................................................................77 Category Set ........................................................78 Schema Definitions ..............................................78 Impact and Lineage Analysis ...............................79 Extended Model Setup ........................................................79 Extending an Existing Model ........................................ 79 Setting Up the Model Category Set File .......................80 Programmers Guide v Contents Merging ESP Categories .....................................80 Changing the Default Category ...........................81 Setting Datatypes for an ESP Schema .........................81 ESP Schema Model Development ......................................82 Exploring the Sample Model .........................................82 The Sample Model ........................................................83 Creating an ESP Schema Model ..................................85 Creating a Model Using Categories .....................85 Creating a Logical Data Model ............................85 Adding Schema Definition ...................................86 Defining Schema Properties ................................87 Validating a Model ........................................................90 PowerDesigner Validity Checks ...........................91 Custom Checks for ESP Schema Extensions .....91 Importing a CCL File .....................................................91 Exporting a CCL File ....................................................92 Model Generation 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