composite

I have a master table A with a composite primary key, consisting of two columns. One of these columns is a constant ("THE CONSTANT VALUE" in the code below). This table definition looks like the following: @Entity public class Master { @Id @Column(name = "SIGNIFICANT_KEY") private String realKey; @Id @Column(name = "CONSTANT_KEY") private String constantPartKey; } I have a detail table B, referencing master table A using only one (non-constant) column. I want to implement usual ManyToOne and OneToMany relations between the two tables. Question : How can I handle this situation with Hibernate?

I have scoured GoogleCode, GWT ShowCase, GWT Developer Notes, and Google Groups for some inkling as to how to get/set values of a CompositeCell. There is no one definitive example that explains how to use it within a CellTable. Let's stare at some code... first an abstract class... public abstract class ToggleableGrid<T> extends CellTable<T> { private static final String DEFAULT_TABLE_WIDTH = "100%"; private static final DisplayMode DEFAULT_MODE = DisplayMode.VIEW; protected void setDefaults() { setWidth(DEFAULT_TABLE_WIDTH); // Set the message to display when the table is empty.

I have a composite pattern implementation, used for GUI components: class CObject { private: CObject * m_pParent; CObjectContainer * m_pChildren; void private_foo() { this->foo(); //Calls private_foo for each child in container. m_pChildren->foo(); } public: virtual void foo() { //empty for base class } virtual CObject * duplicate() { //Do duplication code return new CObject(*this); } virtual CObject * detach() { //Remove this object (along with it's children) //from current tree. m_pParent->RemoveChild(this); m_pParent = nullptr; return this; } } class CSpecificObject : public CObject {

I want to disable/enable user interaction (mouse click more specificly) on many widgets like hyperlink, button, etc which are contained in a composite (flextable) there are more than one click handlers, and I don't want to bother with removing and adding listeners according to mode (interaction enabled/disabled) Any ideas would be appriciated... You forgot to mention the version of GWT. In GWT 2.0 you can use this code snippet or something similar. This feature allows you to cancel events before they are handed over to the target widget. Event.addNativePreviewHandler(new Event

How can i give composite primary key in Rails without any gem? My first table in migration file: class CreateUsers < ActiveRecord::Migration def self.up create_table :users do |t| t.string :userid t.string :name t.string :address t.timestamps end end def self.down drop_table :users end end My second table in migration file: class CreateProjects < ActiveRecord::Migration def self.up create_table :projects do |t| t.string :title t.string :description t.timestamps end end def self.down drop_table :projects end end In my schema file: ActiveRecord::Schema.define(:version => 20110222044146) do

Here's a theoretical/pedantic question: imagine properties where each one could be owned by multiple others. Furthermore, from one iteration of ownership to the next, two neighboring owners could decide to partly combine ownership. For example: territory 1, t=0: a,b,c,d territory 2, t=0: e,f,g,h territory 1, t=1: a,b,g,h territory 2, t=1: g,h That is to say, c and d no longer own property; and g and h became fat cats, so to speak. I'm currently representing this data structure as a tree where each child could have multiple parents. My goal is to cram this into the Composite design pattern; but

I'm attempting to write an area of a function in PL/pgSQL that loops through an hstore and sets a record's column(the key of the hstore ) to a specific value (the value of the hstore ). I'm using Postgres 9.1. The hstore will look like: ' "column1"=>"value1","column2"=>"value2" ' Generally, here is what I want from a function that takes in an hstore and has a record with values to modify: FOR my_key, my_value IN SELECT key, value FROM EACH( in_hstore ) LOOP EXECUTE 'SELECT $1' INTO my_row.my_key USING my_value; END LOOP; The error which I am getting with this code: "myrow" has no field "my_key