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Oracle ??????????? -2012?4??: Composite Patches

- by James Zhang

???????DBA?????????????bundle patches, ??Patch Set Updates(PSU)????????,??oracle??????bundle patches,??PSU,??,??????????????,???????????????????(one-off patch),????overlay patches,??????????????? Oracle?????????,???2012?4???Database PSU 11.2.0.3.2??,??????patch??Composite Patches. Composite Patches ??: *…

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The Template Method Design Pattern using C# .Net

- by nijhawan.saurabh

First of all I'll just put this pattern in context and describe its intent as in the GOF book: Template Method: Define the skeleton of an algorithm in an operation, deferring some steps to Subclasses. Template Method lets subclasses redefine certain steps of an algorithm without changing the Algorithm's Structure. …

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General Overview of Design Pattern Types

Typically most software engineering design patterns fall into one of three categories in regards to types. Three types of software design patterns include: Creational Type Patterns Structural Type Patterns Behavioral Type Patterns The Creational Pattern type is geared toward defining the preferred methods for creating new instances of…

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dynamic JSF composite component styling/rendering

- by Checkoff

I've a little problem with a composite component. This component's implementation looks like: <composite:implementation> <h:outputStylesheet name="foo.css" library="bar"/> <div id="#{cc.clientId}"> <composite:insertChildren/> </div> </composite:implementation> It is included…

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JSF composite component - weird behavior when trying to save state

- by jc12

I'm using Glassfish 3.2.2 and JSF 2.1.11 I'm trying to create a composite component that will take as parameters a string and a max number of characters and then will show only the max amount of characters, but it will have a "more" link next to it, that when clicked will expand the text to the full length and will then have a…

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What are the advantages of the delegate pattern over the observer pattern?

- by JoJo

In the delegate pattern, only one object can directly listen to another object's events. In the observer pattern, any number of objects can listen to a particular object's events. When designing a class that needs to notify other object(s) of events, why would you ever use the delegate pattern over the observer pattern? I see…

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Gone With the Wind?

- by antony.reynolds

Where Have All the Composites Gone? I was just asked to help out with an interesting problem at a customer. All their composites had disappeared from the EM console, none of them showed as loading in the log files and there was an ominous error message in the logs. Symptoms After a server restart the customer noticed…

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JSF Composite Component

- by purecharger

I'm trying to create a composite component for use in my Seam application, and I'm running into problems with the simplest "hello, world" component. I have placed a file named hello.xhtml in {jboss deploy}/application.ear/application.war/resources/greet : <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"…

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SQL SERVER – Using expressor Composite Types to Enforce Business Rules

- by pinaldave

One of the features that distinguish the expressor Data Integration Platform from other products in the data integration space is its concept of composite types, which provide an effective and easily reusable way to clearly define the structure and characteristics of data within your application. An important…

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NHibernate - mappping composite-id to table with non-composite primary key

- by Dmitry

I have table like this: ID - PK; KEY1 - UNIQUE1; KEY2 - UNIQUE1; If I don't want to use ID in my mappings, can I tell NHibernate to use KEY1 & KEY2 as a composite id? When I declare composite id like this: <composite-id> <key-property name="KEY1"/> <key-property name="KEY2"/>…

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Is DataAdapter use facade pattern or Adapter pattern.

- by Krirk

When i see Update(),Fill() method of DataAdapter object I always think Is DataAdapter use facade pattern ? It looks like behind the scenes It will create Command object, Connection object and execute it for us. Or DataAdapter use Adapter pattern because it is adapter between Dataset and Comamand…

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Design pattern for cost calculator app?

- by Anders Svensson

Hi, I have a problem that I’ve tried to get help for before, but I wasn’t able to solve it then, so I’m trying to simplify the problem now to see if I can get some more concrete help with this because it is driving me crazy… Basically, I have a working (more complex) version of this application,…

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JSF2 - Problems with Composite Components and Validatiors

- by Shadowman

I've created some Facelets to make developing our pages easier. Particularly, I've created a series of Facelets for input components. I have 1 Facelet, <xxx:input /> that displays a label around the input field. Beyond that, I have Facelets like <xxx:inputText /> and…

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A talk about observer pattern

- by Martin

As part of a university course I'm taking, I have to hold a 10 minute talk about the observer pattern. So far these are my points: What is it? (defenition) Polling is an alternative Polling VS Observer When Observer is better When Polling is better (taken from here) A statement…

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Composite-like pattern and SRP violation

- by jimmy_keen

Recently I've noticed myself implementing pattern similar to the one described below. Starting with interface: public interface IUserProvider { User GetUser(UserData data); } GetUser method's pure job is to somehow return user (that would be an operation speaking in…

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A couple of pattern matching issues with pattern matching in Lua

- by Josh

I'm fairly new to lua programming, but I'm also a quick study. I've been working on a weather forecaster for a program that I use, and it's working well, for the most part. Here is what I have so far. (Pay no attention to the zs.stuff. That is program specific and has…

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The Endeca UI Design Pattern Library Returns

- by Joe Lamantia

I'm happy to announce that the Endeca UI Design Pattern Library - now titled the Endeca Discovery Pattern Library - is once again providing guidance and good practices on the design of discovery experiences. Launched publicly in 2010 following several years of…

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Fetching Strategy example in repository pattern with pure POCO Entity framework

- by Shawn Mclean

I'm trying to roll out a strategy pattern with entity framework and the repository pattern using a simple example such as User and Post in which a user has many posts. From this answer here, I have the following domain: public interface IUser { public Guid…

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Difference between the Repository Pattern and the View Model Pattern

- by Mark Sayewich

I am trying to create a site using the ASP MVC Framework. Some of the documentation use the IRepository pattern to abstract the information being sent to the view for rendering, while others recommend using a ViewModel (as in MVVC). What is the difference? …

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Psuedo-Backwards Builder Pattern?

- by Avid Aardvark

In a legacy codebase I have a very large class with far too many fields/responsibilities. Imagine this is a Pizza object. It has highly granular fields like: hasPepperoni hasSausage hasBellPeppers I know that when these three fields are true, we have a…

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SSIS Design Pattern: Producing a Footer Row

- by andyleonard

The following is an excerpt from SSIS Design Patterns (now available in the UK!) Chapter 7, Flat File Source Patterns. The only planned appearance of all five authors presenting on SSIS Design Patterns is the SSIS Design Patterns day-long pre-conference…

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SOA Composite Sensors : Good Practice

- by angelo.santagata

I was discussing a interesting design problem with a colleague of mine Niall (his blog) on the topic of how to cancel an inflight SOA Composite process. Obviously one way to do this is to cancel the process from enterprise Manager (…

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Observer pattern for unpredictable observation time

- by JoJo

I have a situation where objects are created at unpredictable times. Some of these objects are created before an important event, some after. If the event already happened, I make the object execute stuff right away. If the event is…

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SSIS Design Pattern: Loading Variable-Length Rows

- by andyleonard

Introduction I encounter flat file sources with variable-length rows on occassion. Here, I supply one SSIS Design Pattern for loading them. What's a Variable-Length Row Flat File? Great question - let's start with a definition. A…

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Ocaml Pattern Matching

- by Atticus

Hey guys, I'm pretty new to OCaml and pattern matching, so I was having a hard time trying to figure this out. Say that I have a list of tuples. What I want to do is match a parameter with one of the tuples based on the first…

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