fr.jayasoft.ivy.repository
Interface Resource

All Known Implementing Classes:

FileResource, URLResource

public interface Resource

Represents a resource in an Ivy Repository. The resource interface allows one to obtain the following information about a resource:

• resource name/identifier in repository syntax
• date the resource was last modified.
• size of the resource in bytes.
• if the resource is available.

Implementation Notes

In implementing the interface you need to ensure the following behaviors:

• All of the methods specified in the interface fail by returning an empty value (false, 0, ""). In other words, the specified interface methods should not throw RuntimeExceptions.
• Failure conditions should be logged using the Message.verbose(java.lang.String) method.
• Failure of one of the interface's specified methods results in all other interface specified methods returning an empty value (false, 0, "").

Method Summary

boolean	exists() Determine if the resource is available.
long	getContentLength() Get the resource size
long	getLastModified() Get the date the resource was last modified
java.lang.String	getName() Get the name of the resource.

Method Detail

getName

public java.lang.String getName()

Get the name of the resource.

Returns:

the repositorie's assigned resource name/identifier.

getLastModified

public long getLastModified()

Get the date the resource was last modified

Returns:

A long value representing the time the file was last modified, measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970), or 0L if the file does not exist or if an I/O error occurs.

getContentLength

public long getContentLength()

Get the resource size

Returns:

a long value representing the size of the resource in bytes.

exists

public boolean exists()

Determine if the resource is available.

Note that this method only checks for availability, not for actual existence.

Returns:

boolean value indicating if the resource is available.