72 lines
5.9 KiB
HTML
72 lines
5.9 KiB
HTML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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<meta name="DC.Title" content="iSeries Navigator structure and flow of control for Java plug-ins" />
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<meta name="abstract" content="For Java plug-ins, iSeries Navigator provides a built-in ActiveX server that manages the communication between the Navigator and the plug-in's Java classes." />
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<title>iSeries Navigator structure and flow of control for Java plug-ins</title>
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<body id="rzakxjavacntrolflow"><a name="rzakxjavacntrolflow"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">iSeries Navigator structure and flow of control for Java plug-ins</h1>
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<div><p>For Java™ plug-ins, iSeries™ Navigator
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provides a built-in ActiveX server that manages the communication between the Navigator and the plug-in's Java classes.</p>
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<p>The server component uses the Java Native Interface (JNI) API to create the plug-in's objects and to call their
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methods. Thus, Java programmers who are developing iSeries Navigator plug-ins do not need to be concerned with the details of ActiveX server implementation.</p>
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<p>When a user is interacting with iSeries Navigator Java plug-ins,
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calls will be generated to the different registered Java interface classes for the implementation of the specific
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request.</p>
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<p>Plug-ins work by responding to method calls from iSeries Navigator that are generated in response to user actions. For
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example, when a user right-clicks on an object in the Navigator hierarchy, the Navigator constructs a context menu for the object, and displays the menu on the screen. The Navigator obtains the menu items
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by calling each plug-in that has registered its intent to supply context menu items for the selected object type.</p>
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<p>The functions that are implemented by a plug-in logically are grouped into "interfaces." An interface is a set of logically related methods on a class that iSeries Navigator can call to perform a specific function. For Java plug-ins, the
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following three <span class="uicontrol">Java interfaces</span> are defined:</p>
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<ul><li>ListManager</li>
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<li>ActionsManager</li>
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<li>DropTargetManager</li>
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</ul>
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<dl><dt class="dlterm">Product architecture for iSeries Navigator plug-ins</dt>
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<dd><p><strong>The internal architecture of the iSeries Navigator product reflects that it is intended to serve as an integration
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point for an extensible, broad-based operations interface for the iSeries server. Each functional component of the interface
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is packaged as an ActiveX server. The Navigator learns about the existence of a particular server component by means of entries in the Windows<sup>®</sup> registry. Multiple servers may register their request to add menu items and dialogs to a given object type in the Navigator hierarchy.</strong></p>
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<div class="note"><span class="notetitle">Note:</span> <strong>For third-party Java plug-ins to be available to iSeries Navigator
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users, iSeries Access for Windows users
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must have Version 4 Release 4 Modification Level 0 of iSeries Access for Windows installed on their personal computers.</strong></div>
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</dd>
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<dt class="dlterm">iSeries Navigator data for Java plug-ins</dt>
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<dd> <p>When the Navigator calls a function implemented by a plug-in, the request typically involves an object or objects the user selected in the main Navigator window. The plug-in must be able to determine
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which objects have been selected. The plug-in receives this information as a list of fully-qualified object names. For Java plug-ins,
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an ObjectName class is defined that provides information about the selected objects. Plug-ins that add folders to the object hierarchy must return items in the folder to iSeries Navigator in the form of "item identifiers." For Java plug-ins, an ItemIdentifier
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class is defined that is used by the plug-in to return the requested information.</p>
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<p>An iSeries Navigator plug-in sometimes
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will need to affect the behavior of the main Navigator window. For example, following completion of a user operation, it may be necessary to refresh the Navigator list view or to insert text into the Navigator's
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status area. Utility classes are supplied in the package com.ibm.as400.opnav that provide the required services.</p>
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</dd>
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</dl>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzakxpluginjava.htm" title="Use the following topics to learn about the flow of control in iSeries Navigator for Java.">Java Reference</a></div>
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</div>
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</div>
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</body>
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</html> |