AW: [opencms-dev] Code: File Exists?

[Thomas Weckert]

Hii,

testing for the existence of the title property on a resource is not
sufficient. Instead, you would try to read the file header of a
resource. If the resource doesnt exist you will catch a CmsException.
The costs of reading the file header are not too high, since the file
header excludes the file content.

private boolean exists(CmsObject cms, String resourcename) {
	boolean result = false;
	try {
		cms.readFileHeader(resourcename);
		result = true;
	} catch (CmsException e) {
		result = false;
	}
	return result;
}

Regards,
Thomas Weckert
Alkacon Software - The OpenCms Experts
http://www.alkacon.com 


-----Ursprüngliche Nachricht-----
Von: opencms-dev-admin at opencms.org
[mailto:opencms-dev-admin at opencms.org] Im Auftrag von Jens Rickhoff
Gesendet: Freitag, 25. Juli 2003 15:50
An: opencms-dev at opencms.org; Tim.Mundy at babelfish.com
Betreff: Re: [opencms-dev] Code: File Exists?


Hi Tim,

I solved it by trying to access a property of the resource (i.e.
file/folder). If that method throws a CmsException, I know the file does
not exist (or that any other serious exception occured). It works fine
for me, here's the JSP snippet:

  private boolean exist(CmsJspActionElement cms, String resource) {
    boolean result = true;
    try {
      String test = cms.getCmsObject().readProperty(resource, "title",
false, "title");
    } catch (com.opencms.core.CmsException e) {
      result = false;
    }
    return result;
  }

However, I'd prefer a "real" CmsObject.resourceExists() method...

Hope that helps,

Jens

----- Original Message -----
From: Tim Mundy
To: opencms-dev at opencms.org
Sent: Wednesday, July 16, 2003 11:46 PM
Subject: [opencms-dev] Code: File Exists?


Hello List,

In a module that I'm developing, I'm trying to confirm that a path
(string) points to an existing file. I can't seem to find a method that
will return a boolean if a file exists or not. Does anyone know of a
method in OpenCms that would do the job? I'm sure someone else has had
this issue come up before.

Thanks,

Tim Mundy
Software Developer
E-mail: Tim.Mundy at babelfish.com
Phone: 780.944-9964
Fax: 780.432.5700

The Babel Fish Corporation
Where the World comes to Communicate!!



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