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Revision as of 12:21, 20 June 2010 (view source) Muhammadnasir (Talk) (→‎Marker Interface in Java) ← Older edit		Revision as of 12:22, 20 June 2010 (view source) Muhammadnasir (Talk) (→‎Marker Interface in Java) Newer edit →
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	*• Marker Interface Pattern		*• Marker Interface Pattern
	[http://en.wikipedia.org/wiki/Marker_interface_pattern Marker Interface Pattern ]		[http://en.wikipedia.org/wiki/Marker_interface_pattern Marker Interface Pattern ]
		+	*• Forum Discussion on Marker Interface
		+	[http://www.velocityreviews.com/forums/t144176-the-purpose-of-marker-interface-in-java.html]
	== Extends / Uses  ==		== Extends / Uses  ==

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Revision as of 12:22, 20 June 2010

ADempiere Package org.compiere.model Classes/Interfaces

File:NasirADempierePackageModel.pdf

Helping Services

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Introduction to Java Language

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How to install JDK > Java Development Kit

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How to install postgres Database

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How to install JRE > Java Runtime Environment

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How to ready windows to run Java based applications

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How to configure server for ADempiere

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How to configure clients for ADempiere

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ADempiere code structure

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Manage ADempiere tree

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How to create new window

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How to create new Tab

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Create and attach a callout with fields

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Create and attach a callout with a button

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How to create Dynamic and Static validation lists

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How to Create New Product and setting its Price

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How to Manage Purchase

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How to Manage Sales

Data Model Purchasing

Debugging in Adempiere

Download pdf here Debugging.pdf.

How to Create New Project in Eclipse

How to Create New Project in Eclipse

CreateNewProject.pdf.

Relationship in ADempiere

ADempiereRelations.pdf.

I am not sure that this is correct document ,you can send me your comments to update it .

Click and Find GUI window initial call of methods

Click and find >> ClickAndFindBy_Nasir.pdf.

You can send me your comments via mail to update it .

How to Identify Button class Process

: Click Here.

You can send me your comments via mail to update it .

Assets Data Model and Relationship

: Data Model and Relationship.

ADempiere Reporting Help

: Click Here.

You can send me your comments via mail to update it .

Persistent Objects PO Class

PO is a persistent class in ADempiere.It is an abstract class.This persistence object class manages the database and the mapping between the database and the objects. PO class use for three of main functionality ::

• It use for Transfer of Database
• It use for calls the Triggers
• It use for calls the Model Validator

PO Class Implements three interfaces

• • Serializable (Java Built-in Interface).It is a marker Interface(Interface which have no any method).This interface only use for streaming of object.

The initial concept of object serialization is the ability to read and write objects to byte streams. Serialization involves saving the current state of an object to a stream, and restoring an equivalent object from that stream. Below images describe the Streaming of objects.

• • Comparator > (Java Built-in Interface) It consist two methods compare() and equals().These methods are implemented by PO. Because PO class implements this interface so it need to override these methods.

Methods > boolean equals(Object obj) and int compare(Object obj1, obj2)

• • Evaluatee > This is ADempiere Built-in interface. It consist only one method.

Method >public String get_ValueAsString (String variableName).

Immutable Objects in Java

In Java the String class is immutable, so that once it is created a String object cannot be changed. The String class has a number of methods, that appear to modify strings. Since strings are immutable, what these methods really do is create and return a new string that contains the result of the operation.

• •How to Make a Java Class Immutable

Make a Java Class Immutable

• • A Strategy for Defining Immutable Objects

Defining Immutable Objects

• •Immutable objects First Page

Immutable objects

• •Immutable objects

Immutable objects

• • Understanding Instance and Class Members

Instance and Class Members

Marker Interface in Java

In Java the interfaces without any methods are known as marker interfaces. Examples Of marker interfaces > Clonable,Serializable, SingleThreadModel, Event listener. E.g. Suppose you want to persist (save) the state of an object then you have to implement the Serializable interface otherwise the compiler will throw an error. Marker Interfaces are implemented by the classes or their super classes in order to add some functionality.

• •For more Detail Visit Below Links

Marker Interface

• • Marker Interface Pattern

Marker Interface Pattern

• • Forum Discussion on Marker Interface

[1]

Extends / Uses

How to use UML extends and uses

ADempiere Developer Forum Volume-1

Click Here to see the pdf file.

ADempiere Developer Forum Volume-2

Click Here to see Volume-2 file.

ADempiere Developer Forum Volume-3

Click Here to see Volume-3 file.

ADempiere Developer Forum Volume-4

Click Here to see Volume-4 file.