Creating a New Enterprise Object

Creating EOGenericRecords (Java)

 
import com.apple.yellow.foundation.*; 
import com.apple.yellow.webobjects.*; 
import com.apple.yellow.eocontrol.*; 
public class Main extends WOComponent { 
    /** @TypeInfo Movie */ 
    protected EOEnterpriseObject aMovie; 
    public WOComponent makeAMovie() 
    { 
        String entName = "Movie";  // Name of entity within eomodeld 
        EOEditingContext ec = session().defaultEditingContext(); 
        EOClassDescription movieClassDesc; 
        // create a Movie instance 
        movieClassDesc = EOClassDescription(). 
            classDescriptionForEntityName(entName); 
        aMovie = (EOEnterpriseObject) movieClassDesc. 
            createInstanceWithEditingContext(ec, null); 
        // set some default values. 
        aMovie.takeValueForKey("DefaultTitle", "title"); 
        aMovie.takeValueForKey("1000000", "revenue");  
        return null;  // updates the current component 
    } 
}

Creating EOGenericRecords (WebScript and Objective-C)

 
/** @TypeInfo Movie */ 
id aMovie; 
 
- (WOComponent *)makeAMovie 
{ 
    EOEditingContext *ec = [[self session] defaultEditingContext]; 
    aMovie = [[EOClassDescription classDescriptionForEntityName: @"Movie"] 
        createInstanceWithEditingContext: ec 
        globalID: nil 
        zone: nil]; 
    [aMovie  
        takeValue:@"DefaultTitle"  
        forKey: @"title"]; 
    [aMovie  
        takeValue:@"1000000"  
        forKey: @"revenue"]; 
 
    return nil; 
}

Creating a custom enterprise object (Java)

 
import com.apple.yellow.foundation.*; 
import com.apple.yellow.webobjects.*; 
import com.apple.yellow.eocontrol.*; 
import Movie; 
public class Main extends WOComponent { 
    Movie aMovie; 
    public WOComponent makeAMovie() 
    { 
        // create an instance of a Movie 
        aMovie = new Movie(null,null,null); 
        // set default values 
        aMovie.setTitle("DefaultTitle"); 
        aMovie.setRevenue(new Float("1000000")); 
        return null;  // return the updated component. 
    } 
}

Also link Movie.java into the application by adding it to the Classes folder within Project Builder. Generating Movie.java from EOModeler provides you with the common get and set methods. Additional business logic can be added directly to the Movie.java file.

Here's a portion of the Movie.java file:

Example custom enterprise object (Java)

 
// 
// Created on Mon Oct 26 22:43:39  1998 by Apple EOModeler Version 377 
 
import com.apple.yellow.foundation.*; 
import com.apple.yellow.eocontrol.*; 
import java.util.*; 
import java.math.BigDecimal; 
 
public class Movie extends EOCustomObject { 
    protected Number revenue; 
    protected String title; 
    // This is the constructor that EOF uses.  
    // Later (perhaps upon a willRead()) it will be populated with  
    // values via EOCustomObject's takeValueForKey() method. 
    public Movie(EOEditingContext context, EOClassDescription classDesc, 
        EOGlobalID gid) { 
        super(context, classDesc, gid); 
    } 
    public String category() { willRead(); return category; } 
    public void setCategory(String value) { 
        willChange(); 
        category = value; 
    } 
    public Number revenue() { willRead(); return revenue; } 
    public void setRevenue(Number value) { 
        willChange(); 
        revenue = value; 
    } 
    public String title() { willRead(); return title; } 
    public void setTitle(String value) { 
        willChange(); 
        title = value; 
    } 
 } 
}

Creating a custom enterprise object (WebScript and Objective-C)

 
//************** 
// Main.wos 
//************** 
// Assumes Movie.h and Movie.m have been linked into your application. 
// (Movie.h was generated from EOModeler and is shown below) 
// 
Movie *aMovie; 
- (WOComponent *)makeAMovie 
{ 
    // Create new instance of a Movie 
    aMovie = [[Movie alloc] init]; 
    // Set some of the attrs of the Movie 
    [aMovie setTitle: @"Default Title"]; 
    [aMovie setRevenue: @"1000000"]; 
    return nil; 
}

Example custom enterprise object (Objective-C)

 
//************************************* 
//  Movie.h - generated from EOModeler 
//************************************* 
#import <EOControl/EOControl.h> 
@interface Movie : NSObject <NSCoding> 
{ 
    NSNumber *revenue; 
    NSString *title; 
} 
- (void)setRevenue:(NSNumber *)value; 
- (NSNumber *)revenue; 
- (void)setTitle:(NSString *)value; 
- (NSString *)title; 
@end