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kuni katsuya

MySQL :: MySQL 3.23, 4.0, 4.1 Reference Manual :: 17.3.4.1 Driver/Datasource Class Name... - 0 views

dev.mysql.com/...-configuration-properties.html

mysql4 character sets unicode encodings jdbc

shared by kuni katsuya on 13 Jun 12 - No Cached
  • useUnicode
    • kuni katsuya
      kuni katsuya on 14 Jun 12
       
      foo
    • kuni katsuya
      kuni katsuya on 14 Jun 12
       
      see also: http://www.diigo.com/ditem_mana2/read_ditem?link_id=124285330&url=http%3A%2F%2Fdev.mysql.com%2Fdoc%2Frefman%2F4.1%2Fen%2Fconnector-j-reference-charsets.html if characterEncoding is unspecified, jdbc driver sets it to the character set specified by the mysql system
  • defaults to 'true'
  • characterEncoding
  • ...2 more annotations...
  • If 'useUnicode' is set to true, what character encoding should the driver use when dealing with strings? (defaults is to 'autodetect')
    • kuni katsuya
      kuni katsuya on 13 Jun 12
    • kuni katsuya
      kuni katsuya on 13 Jun 12
       
      if characterEncoding is unspecified, jdbc driver sets it to the character set specified by the mysql system
kuni katsuya

MySQL :: MySQL 3.23, 4.0, 4.1 Reference Manual :: 17.3.4.4 Using Character Sets and Uni... - 0 views

dev.mysql.com/...ctor-j-reference-charsets.html

mysql4 character sets unicode encodings

shared by kuni katsuya on 13 Jun 12 - No Cached
  • 17.3.4.4. Using Character Sets and Unicode
  • MySQL 3.23/4.0/4.1 Manual
  • MySQL 3.23, 4.0, 4.1 Reference Manual
  • ...5 more annotations...
  • character encoding
  • could either be automatically detected from the server configuration, or could be configured by the user through the useUnicode and characterEncoding properties
  • character encoding between client and server is automatically detected upon connection
  • character_set_server for server versions 4.1.0 and newer
  • To override the automatically detected encoding on the client side, use the characterEncoding property in the URL used to connect to the server.
kuni katsuya

UML 2 Class Diagram Guidelines - 0 views

www.agilemodeling.com/...classDiagram.htm

uml class diagram best practices

shared by kuni katsuya on 19 Dec 12 - Cached
  • UML 2 Class Diagram Guidelines
  • 1.        General Guidelines
  • 2.        Class Style Guidelines
  • ...49 more annotations...
  • Use Common Terminology for Names
  • Prefer Complete Singular Nouns for Class Names
  • Name Operations with a Strong Verb
  • Name Attributes With a Domain-Based Noun
    • kuni katsuya
      kuni katsuya on 19 Dec 12
       
      don't just use the attribute's type with first character lower cased!!! argghhh!  (eg. instead of Node node, Node parent)
  • Do Not Model Scaffolding Code
  • Include an Ellipsis ( … ) At The End of Incomplete Lists
  • Develop Consistent Method Signatures
  • Avoid Stereotypes Implied By Language Naming Conventions
  • 3.        Interfaces
  • Name Interfaces According To Language Naming Conventions
    • kuni katsuya
      kuni katsuya on 19 Dec 12
       
      I+ is NOT an acceptable naming convention!  this is a very dumb, thoughtless, pointless convention originated by microsoft
    • kuni katsuya
      kuni katsuya on 19 Dec 12
  • Do Not Model the Operations and Attributes of an Interface in Your Classes
  • Consider an Interface to Be a Contract
  • 4.        Relationship Guidelines
  • Model Relationships Horizontally
  • Depict Similar Relationships Involving A Common Class As A Tree
  • Always Indicate the Multiplicity
  • reduce clutter in the diagram
  • Avoid a Multiplicity of “*”
  • Replace Relationships By Indicating Attribute Types
    • kuni katsuya
      kuni katsuya on 19 Dec 12
       
      if dependency relationships were drawn between every class and the types of it's attributes, the class diagram becomes cluttered very quickly this dependency is obvious if the type is indicated for each attribute
  • Do Not Model Every Single Dependency
    • kuni katsuya
      kuni katsuya on 19 Dec 12
       
      generalization of #7 what you show/don't show depends on the main concepts  you're trying to convey in any specific diagram
  • Write Concise Association Names In Active Voice
  • Indicate Directionality To Clarify An Association Name
  • Name Unidirectional Associations In The Same Direction
  • Indicate Role Names When Multiple Associations Between Two Classes Exist
  • Indicate Role Names on Recursive Associations
    • kuni katsuya
      kuni katsuya on 19 Dec 12
       
      eg. parent, child
  • Make Associations Bi-Directional Only When Collaboration Occurs In Both Directions
  • Question Multiplicities Involving Minimums And Maximums
    • kuni katsuya
      kuni katsuya on 19 Dec 12
       
      this just leads to stupid programming practices like hard-coding array sizes, making code more brittle
  • 6.        Inheritance Guidelines
  • “is a”
  • “is like” relationships
  • Apply the Sentence Rule For Inheritance
  • Place Subclasses Below Superclasses
  • A Subclass Should Inherit Everything
    • kuni katsuya
      kuni katsuya on 19 Dec 12
       
      if a subclass sets an attribute to null, implements a method returning null or throwing a NotImplementedException, it really isn't a subclass, or the superclass needs to be decomposed
  • 7.        Aggregation and Composition Guidelines
  • object is made up of other objects
  • aggregation
  • “is part of” relationships
  • whole-part relationship between two objects
  • Composition
  • stronger form of aggregation where the whole and parts have
  • coincident lifetimes, and it is very common for the whole to manage the lifecycle of its parts
  • Apply the Sentence Rule for Aggregation
  • Depict the Whole to the Left of the Part
  • Don’t Worry About Getting the Diamonds Right
  • associations, aggregation, composition, dependencies, inheritance, and realizations
  • line on a UML class diagram
  • defines a cohesive set of behaviors
  • Indicate Visibility Only On Design Models
  • Design Class Diagrams Should Reflect Language Naming Conventions
kuni katsuya

Comma-separated values - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...Comma-separated_values

CSV CommaSeparatedValue

shared by kuni katsuya on 20 Feb 13 - Cached
  • Comma-separated values
  • line breaks
  • records
  • ...7 more annotations...
  • Basic rules and examples
  • fields
  • separated by some other character
  • Application support
  • but depending on the system's regional settings, it may expect a semicolon as a separator instead of a comma, since in some languages the comma is used as the decimal separator
  • Microsoft Excel will open .csv files,
  • Also, many regional versions of Excel will not be able to deal with Unicode in CSV
kuni katsuya

Enterprise JavaBeans 3.1 with Contexts and Dependency Injection: The Perfect Synergy - 0 views

www.oracle.com/...ejb-3-1-175064.html

javaee6 ejb3.1 cdi

shared by kuni katsuya on 12 Jul 12 - No Cached
  • stateless EJB 3.1 bean as boundary (Facade)
  • injected managed beans (controls)
  • @Inject
  • ...22 more annotations...
  • @Inject
  • CDI managed beans. The @EJB annotation is removed and @Inject is used instead
  • Annotating the boundary (Cart) with the @Named annotation makes the Cart immediately visible for expression language (EL) expressions in JSP and JSF
  • @Named annotation takes the simple name of the annotated class, puts the first character in lowercase, and exposes it directly to the JSF pages (or JSP). The Cart bean can be accessed directly, without any backed or managed beans, by the JSF pages: <h:commandButton value="Check out!" action="#{cart.checkout}" />
  • If there is a need for abstraction, the class can be turned into an interface (or abstract class)
  • local implementation (with CDI events
  • @Inject Event<String> event;
  • event.fire("Order proceeded!");
  • remote implementation:
  • javax.enterprise.event.Event belongs to the CDI-implementation
  • class Event can be considered to be a lightweight alternative to the java.beans.PropertyChangeSupport class
  • @Inject Event<String> event;
  • event.fire("Order proceeded!");
  • event can be received by any managed bean and also by EJB beans
  • provide a method with a single @Observes annotated parameter
  • @Observes String event
  • there is no real event, just the payload:
  • The during attribute in the @Observes annotation allows you to select in which transactional phase the event gets delivered. The default setting is IN_PROGRESS, which causes an immediate event delivery regardless of the transaction outcome. The AFTER_SUCCESS configuration causes the delivery to occur only after successful transaction completion
  • Although CDI events work only inside a single process (in the default case, CDI is extensible), they are perfectly suitable for decoupling packages from modules
  • The method checkout() starts a transaction that gets "reused" by the OrderSystem and CustomerNotification session beans
  • ordering.placeOrder(); notifier.sendNotification();
    • kuni katsuya
      kuni katsuya on 18 Jul 12
       
      both run within same transaction
  • EJB beans cannot be directly exposed to JSF or JSP without a little help from CDI
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