Complexity Presentation

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AgendaAgenda

• The Challenges of XML and Web Services

• Water and Steam XML• Water Applications• Customers• Product Direction• Summary Benefits• About Clear Methods

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Business ProblemsBusiness Problems

• Complexity of Web services and XML– XML and Java require significant training– The approach of wizards and code generators

creates more problems that it solves

• Desire to move to Service Oriented Architecture– but need good tool support

• Lack of shared meaning for data and process– data modeling tools lack completeness and full XML

support

• Need to integrate legacy data and applications through XML

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Steam XML BenefitsSteam XML Benefits

• Faster XML application development, more flexible implementation, easier customization– One simple, consistent object-oriented

environment

• Lower deployment costs– Small teams with fewer required skills

• Better security– Object-oriented security, less complex

environment

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XML as the Common SyntaxXML as the Common Syntax

• Overhead and complexity when working with XML• Mismatch between programming logic and data

– How many APIs between Java and XML?

• Lacking a single, uniform common language to express logic and data

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Pure Web ServicesPure Web Services

• Water extends XML to programming– Executable and extensible markup language - XXML– Easier than Basic, but as powerful as Lisp– Build powerful, flexible abstractions

• Eliminate mismatch between data and logic– Multiple, incompatible APIs between Java and XML– Different object models, syntax, calling conventions, etc

• Designed for Web services -- not bolted on• Pure Web services: everything is a Web service

– Testing, debugging, documentation, deployment, logic

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ComplexityComplexityApplications Require Too Many LanguagesApplications Require Too Many Languages

• J2EE and .NET use more than a dozen languages • Difficult to hire and train for multiple skill sets • Costly: large teams required for delivery • Unreliable: many moving parts are difficult to maintain • Low productivity: extremely difficult to debug or test

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Web Services Web Services Do NotDo Not Simplify Simplify ImplementationImplementation

• Five new languages/standards needed for Web services• Immature standards designed by different committees• Version skew -- a dozen independent standards

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Complexity Limits AutomationComplexity Limits Automation

• Complexity affects security, productivity, reliability, cost, training, time to market, flexibility, ability to abstract and automate, ...

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Incremental: A Sip of WaterIncremental: A Sip of Water

• Runs on industry standard platforms • Uses only open protocols: HTTP, FTP, and SMTP • Automatic support for WS-I standards: WSDL, UDDI, and SOAP • Designed for content, logic, and presentation

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The Steam PlatformThe Steam Platform

Platform

Vendor Clear Methods

Operating System All

Runtime Engine Steam Engine

Language Water Syntax ConciseXML

Development Tools Steam IDE

CICS API HostBridge

Database API JDBC/Water

J2EE .NET

Sun, BEA, IBM Microsoft

All Windows

JVM CLR

Java C#C++ syntax C++ syntax

JBuilder, etc. Visual Studio

JDBC, SQL/J ADO.NET

Various Host Integ. Server

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Water Language FeaturesWater Language Features

• Easy to use– XML/HTML-based syntax – Quick edit/run/debug cycles– Instant syntax checking

• Powerful object system– Any object can be treated as a class or an instance (or both)– On-the-fly changing of the parent of an object to have

dynamic inheritance – Multiple inheritance

• Strong, flexible security– Capability-based security model– Simple yet effective in keeping programs running on a

single JVM isolated

• New high level of maintainability

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Water Language Features, cont.Water Language Features, cont.

• Maintainability features– Add arguments to methods without breaking existing calls – Add additional instance variables to already-created

instances – Add methods to existing classes without requiring the

class’s source code for recompiling

• Flexible method calling– Optional parameters with default values – Arguments passed by keyword or position – Unlimited number of parameters possible via rest

parameter – Content parameter for particularly large arguments – Execution kind settable per parameter, allowing different

kinds of evaluation per argument including none – Type declaration is optional on per-parameter basis

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Steam XML IDE ScreenSteam XML IDE Screen

Object Inspector Window

Double-click feature highlights expressions

XML View

HTML Preview

Program step control

Right-click options

Code View Window

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Water ApplicationsWater Applications

• Modeling and simulation– speed the testing of complex systems and networks– simulators are written in Water to fill the roles of modules

still in development – OPM example

• Expressing new industry standards in XML– Example: SMI-S

• Embedded control with Web services capabilities– Example: Pratt and Whitney portable engine test and

maintenance stations• Complex business or marketing systems• Meta language for OEMs• Integration framework

– Example: JSB-style complex system simulation

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“If Water did not exist, we would

have to invent it”

"Water and Steam have allowed us to consolidate multiple code-generating layers into a single systems architecture that is powerful, adaptable and user-friendly."

CustomersCustomers

Steam benefit: 2 man-months vs. 2 man-years to develop

US Air ForceJoint Synthetic Battlespace

“The Living Center” interactive simulation for Alzheimer’s patients.

General Dynamics Quantum Books

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Summary: Steam XML BenefitsSummary: Steam XML Benefits

• Faster development, more flexible implementations, easier customization– One simple, consistent object-oriented

environment

• Lower deployment costs– Small teams with fewer required skills

• Better security– Object-oriented security, less complex

environment

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Clear MethodsClear Methods

• Mission To provide enterprises and ISVs with advanced Web

services technology and solutions that dramatically speed the creation of flexible business software

• Founded 2001• Team from Bowstreet, MIT• Advisory board members

Michael Cusumano, Henry Lieberman, Jason Bluming, Harvey and Paul Deitel

• Funding from Draper Fisher Jurvetson• Steam XML™ software first deployed March,

2002

www.clearmethods.com