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<hr><p align="left"><small>发信人: strayli (stray), 信区: Delphi <br>
标 题: A Technical View of Borland MIDAS Part II (11) <br>
发信站: BBS 水木清华站 (Thu Nov 12 22:31:22 1998) WWW-POST <br>
<br>
Using OLEnterprise <br>
<br>
<br>
<br>
When installing OLEnterprise on a Windows 95 machine, do not install into the <br>
default directory, but instead install off your root, and try to avoid long <br>
file names in the directory path. Any problems with OLEnterprise and long <br>
filenames on Windows 95 machines will be corrected in future releases of the <br>
product. To work around any potential problems, simply install into a <br>
directory structure that does not use long filenames. <br>
<br>
There are four key pieces in the OLEnterprise toolset: <br>
<br>
The Object Broker, called Broker.exe, and it should be run on the server <br>
machine before loading the Object Factory. If you start it with a -D option <br>
it will spew out debug information that can help you understand that process <br>
of connections, and help you confirm that connections are occurring in the <br>
correct order and at the correct time. <br>
The OLEnterprise Configuration utility, called OLECFG.exe. This utility is <br>
used to specify whether or not you are using an Object Broker, and what <br>
machine the Object Broker is running on. Remember that the broker's job is to <br>
distribute connections randomly, as such it is not needed in order to make <br>
the connection. It is a helpful utility, but not a necessity. Therefore the <br>
configuration gives you the option of turning it off. You should run the <br>
configuration utility on both the client and the server. <br>
The Object Factory, called ObjFact.exe. This utility is the core of the <br>
system, and you must run it on the server or OLEnterprise will not work. <br>
However, you do not have to have this utility running on the client to make a <br>
connection. <br>
The Object Explorer, called OLEntExp.exe. This program plays a similar role <br>
to DCOMCFG.exe. It allows you to browse the objects available on your system, <br>
to export objects from a server, and to import objects from a remote system. <br>
You should remember that the explorer uses the registry as the main <br>
repository of information about the objects on a system. If you have run a <br>
server once on a machine, the explorer will find the object in the registry, <br>
and you can then use the menu to export or import the object. If you are on a <br>
client machine, and are using the explorer to search for programs on remote <br>
machines, then you must be sure that you have used the OLEnterprise <br>
Configuration utility to specify where the object broker you are currently <br>
using is running. If you launch the explorer, and it takes a very long time <br>
to come up, or it appears to hang at times, then it is likely that the <br>
r>
to come up, or it appears to hang at times, then it is likely that the <br>
machine is searching for the broker but cannot find it. The program can take <br>
several minutes before it allows the search to time out and returns control to tthe user. The same thing will happen if you click <br>
on the Object Broker option in the program's left panel. One click, and a <br>
search for the broker will begin. If the broker is not found, use the <br>
configuration utility to specify its location, or else go to the remote <br>
machine and make sure the broker is running. If you start the broker with the <br>
-D option, then you should see output from it when you start an Object <br>
Factory on the same machine, or when you try to connect to it from a remote <br>
machine. <br>
When using the Explorer, you need to learn how to import and export objects. <br>
This is an intuitive process accomplished by manipulating the menus or by <br>
right click on items in the main panels of the application. You should <br>
probably spend some time using the default sample programs shipping with the <br>
product to make sure you understand importing and exporting objects. In <br>
particular, go to etc\samples\auto\memoedit to find a good pre-built sample <br>
program. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.79.111] <br>
</small><hr>
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