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EdmiError edmiRemoteOpenDatabase (SdaiServerContext serverContextId,
SdaiString location,
SdaiString databaseName,
SdaiString password);
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Opens a remote EDMdatabase
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from a thin EDMclient. The EDMdatabase
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will be attached to the EDMserver
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specified in the given server context. An EDMdatabase
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may not be accessed until it is opened by a call to this function.
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In a single-user system the EDMserver
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is embedded in the EDMinterface
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. In a multi-user system the EDMserver
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and the EDMclients will be running as separate processes, possibly on different systems.
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The EDMserver
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may not handle more than one EDMdatabase
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at the time. Any open EDMdatabase
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must therefore be closed before opening another.
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This operation is protected with the EDMdatabase
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password. This password is defined when the EDMdatabase
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is created.
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Arguments
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| Type | Name | Comment |
| SdaiServerContext | serverContextId | Context identification, from edmiDefineServerContext |
| SdaiString | location | The full path to the directory on the remote file system where the EDMdatabase is located. The directory delimiter is '/' on UNIX platforms and '\' on Windows platforms. |
| SdaiString | databaseName | The name of the _the EDMdatabase _ to open. _ EDMdatabase _ names are case sensitive on UNIX platforms and case insensitive on Windows platforms. |
| SdaiString | password | The password for the EDMdatabase. The password is defined by the edmiCreateDatabase function. |
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Return Value
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Options
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Example
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int i; EdmiError rstat; SdaiServerContext suContext; tEdmiWhoIsOnServer *pWhoIsOn; tEdmiConnection *pConnect; SdaiInteger nConnect; /* Define Remote Server Context for the superuser */ rstat = edmiDefineServerContext("SuperUserContext", |
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"superuser", NULL, "xfx56kl9", |
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"TCP", "9090", "MyServerHost", |
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NULL, NULL, NULL, NULL, NULL, &suContext); |
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/* Set the system unavailable */ |
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rstat = edmiRemoteSetUnavailable(suContext, |
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"System unavailable due to maintenance", |
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NULL, NULL); |
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rstat = edmiRemoteWhoIsOn(suContext, &nConnect, &pWhoIsOn, NULL); |
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pConnect = pWhoIsOn->connections; |
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/* Kill all connections except the |
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EDMapplicationServer processes */ |
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for (i=0;i<nConnect;i++) { |
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SdaiString _hostName, _clientName; |
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rstat = edmiRemoteGetClientNames(suContext, |
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pConnect->clientId, &_hostName, |
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&_clientName, NULL); |
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if (!strstr(_clientName, "EDMapplicationServer-")) { |
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rstat = edmiRemoteTerminateClient(suContext, NULL, |
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pConnect->clientId, FORCE_TO_TERMINATE, NULL); |
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} ++pConnect; |
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} /* Close the database */ |
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rstat = edmiRemoteCloseDatabase(suContext, "db546tyz", NULL); |
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/* Perform system maintenance here */ |
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/* Reopen the database */ |
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rstat = edmiRemoteOpenDatabase(suContext, "x:/mypro/db", |
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"mydb", "db546tyz"); |
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/* Set the system available for |
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connections from EDMclients */ |
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rstat = edmiRemoteSetAvailable(suContext, NULL, NULL); |
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. . . |
See also
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