virtual bool MgCoordinateSystemCatalog::AreDictionaryFilesWritable

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[pure virtual]

Checks whether any kind of definition supported by this catalog can be updated in the dictionary files currently in use.

Depending on whether this catalog uses a specific directory to store user-provided definitions in, this method will perform the following checks:

• No specific directory supplied: The target directory is verified to contain all required CSD files. If all have been found, they are verified to be writable. If not all CSD files have been found or if at least one CSD files cannot be written to, this method will return false.
• Specific directory supplied: The target directory is verified to exist and that it is writable, i.e. new files can be created in it. Any existing CSD files are assumed to be writeable then, too.

Returns:

Returns true, if definitions can be updated, incl. adding and deletion, as per the definition above. Otherwise false.

Remarks:

Note, that even if this method returns true, the caller must be prepared that the actual update request of a definition might still fail.