Java Doc for AbstractRegistryReader.java in  » GIS » udig-1.1 » net » refractions » udig » core » internal » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » GIS » udig 1.1 » net.refractions.udig.core.internal 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   net.refractions.udig.core.internal.AbstractRegistryReader

AbstractRegistryReader
abstract public class AbstractRegistryReader (Code)
Abstract implementation of a registry reader that creates objects representing registry contents.

Typically, an extension contains one element, but this reader handles multiple elements per extension.

To start reading the extensions from the registry for an extension point, call the method readRegistry.

To read children of an IConfigurationElement, call the method readElementChildren from your implementation of the method readElement, as it will not be done by default.

This class is similar to the internal class RegistryReader provided by the framework.



Field Summary
final protected static  StringTAG_DESCRIPTION
    

Constructor Summary
protected  AbstractRegistryReader(ILog log, String id)
     The constructor (requires a workbench for logging).

Method Summary
protected  StringgetDescription(IConfigurationElement config)
     This method extracts description as a subelement of the given element.
protected  voidlogError(IConfigurationElement element, String text)
     Logs the error in the plugin log using the provided text and the information in the configuration element.
protected  voidlogMissingAttribute(IConfigurationElement element, String attributeName)
     Logs a very common registry error when a required attribute is missing.
protected  voidlogMissingElement(IConfigurationElement element, String elementName)
     Logs a very common registry error when a required child is missing.
protected  voidlogUnknownElement(IConfigurationElement element)
     Logs a registry error when the configuration element is unknown.
protected  IStatusnewStatus(int severity, String message, Throwable exception)
     IStatus creations (with respect to plugin id).
protected  IExtension[]orderExtensions(IExtension[] extensions)
     Apply a reproducable order to the list of extensions provided, such that the order will not change as extensions are added or removed.
abstract protected  booleanreadElement(IConfigurationElement element)
     Implement this method to read element's attributes.
protected  voidreadElementChildren(IConfigurationElement element)
     Read the element's children.
protected  voidreadElements(IConfigurationElement[] elements)
     Read each element one at a time by calling the subclass implementation of readElement.
protected  voidreadExtension(IExtension extension)
     Read one extension by looping through its configuration elements.
public  voidreadRegistry(IExtensionRegistry registry, String targetPluginId, String extensionPoint)
     Start the registry reading process using the supplied plugin ID and extension point.

Field Detail
TAG_DESCRIPTION
final protected static String TAG_DESCRIPTION(Code)




Constructor Detail
AbstractRegistryReader
protected AbstractRegistryReader(ILog log, String id)(Code)
The constructor (requires a workbench for logging).
Parameters:
  log - ILog for status messages
Parameters:
  id - Plugin ID for status messages




Method Detail
getDescription
protected String getDescription(IConfigurationElement config)(Code)
This method extracts description as a subelement of the given element.
Parameters:
  config - Configuration defining extention point description string if defined, or empty string if not.



logError
protected void logError(IConfigurationElement element, String text)(Code)
Logs the error in the plugin log using the provided text and the information in the configuration element.
Parameters:
  element -
Parameters:
  text -



logMissingAttribute
protected void logMissingAttribute(IConfigurationElement element, String attributeName)(Code)
Logs a very common registry error when a required attribute is missing.
Parameters:
  element -
Parameters:
  attributeName -



logMissingElement
protected void logMissingElement(IConfigurationElement element, String elementName)(Code)
Logs a very common registry error when a required child is missing.
Parameters:
  element -
Parameters:
  elementName -



logUnknownElement
protected void logUnknownElement(IConfigurationElement element)(Code)
Logs a registry error when the configuration element is unknown.
Parameters:
  element -



newStatus
protected IStatus newStatus(int severity, String message, Throwable exception)(Code)
IStatus creations (with respect to plugin id).
Parameters:
  severity - IStatus constant such as IStatus.OK, or IStatus.ERROR
Parameters:
  message - Status message
Parameters:
  exception - Cause of message, may be null IStatus suitable for use with plugin.getLog.log( IStatus )



orderExtensions
protected IExtension[] orderExtensions(IExtension[] extensions)(Code)
Apply a reproducable order to the list of extensions provided, such that the order will not change as extensions are added or removed.
Parameters:
  extensions - Ordered Extentions IExtentions



readElement
abstract protected boolean readElement(IConfigurationElement element)(Code)
Implement this method to read element's attributes. If children should also be read, then implementor is responsible for calling readElementChildren. Implementor is also responsible for logging missing attributes.
Parameters:
  element - true if element was recognized, false if not.



readElementChildren
protected void readElementChildren(IConfigurationElement element)(Code)
Read the element's children. This is called by the subclass' readElement method when it wants to read the children of the element.
Parameters:
  element -



readElements
protected void readElements(IConfigurationElement[] elements)(Code)
Read each element one at a time by calling the subclass implementation of readElement. Logs an error if the element was not recognized.
Parameters:
  elements -



readExtension
protected void readExtension(IExtension extension)(Code)
Read one extension by looping through its configuration elements.
Parameters:
  extension -



readRegistry
public void readRegistry(IExtensionRegistry registry, String targetPluginId, String extensionPoint)(Code)
Start the registry reading process using the supplied plugin ID and extension point.
Parameters:
  registry -
Parameters:
  targetPluginId -
Parameters:
  extensionPoint -



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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