Examples of SourceValidity

org.apache.excalibur.source.SourceValidity

A SourceValidity object contains all information to check if a Source object is still valid.

There are two possibilities:

The validity object has all information to check by itself if it is valid (e.g. given an expires date).
The validity object possibility needs another (newer) validity object to compare against (e.g. to test a last modification date).

To avoid testing what the actual implementation of the validity object supports, the invocation order is to first call {@link #isValid()} and only if this resultis 0 (i.e. "don't know"), then to call {@link #isValid(SourceValidity)}.

Remember to call {@link #isValid(SourceValidity)} when {@link #isValid()} returned0 ! @author Avalon Development Team @version CVS $Revision: 1.4 $ $Date: 2004/02/28 11:47:26 $

            file = new File(file.getAbsolutePath()+".cxml");
            if ( file.exists() ) {
                altContent = this.get(file);
            }
            if ( content != null || altContent != null ) {
                SourceValidity val = new FileTimeStampValidity(file);
                response = new ExtendedCachedResponse(val, content);
                ((ExtendedCachedResponse)response).setAlternativeResponse(altContent);
            }
        }
        return response;

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Examples of SourceValidity

Examples of org.apache.excalibur.source.SourceValidity