/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ package org.apache.ivy.plugins.repository; import java.io.IOException; import java.io.InputStream; /** * Represents a resource in an Ivy {@link Repository}. The resource interface allows one to obtain * the following information about a resource: *
false
, 0
, ""
). In other words, the specified interface
* methods should not throw RuntimeExceptions.false
, 0
, ""
).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.
*/
public long getLastModified();
/**
* Get the resource size
*
* @return a long
value representing the size of the resource in bytes.
*/
public long getContentLength();
/**
* Determine if the resource is available. Note that this method only checks for
* availability, not for actual existence.
*
* @return boolean
value indicating if the resource is available.
*/
public boolean exists();
/**
* Is this resource local to this host, i.e. is it on the file system?
*
* @return boolean
value indicating if the resource is local.
*/
public boolean isLocal();
/**
* Clones this resource with a new resource with a different name
*
* @param cloneName
* the name of the clone
* @return the cloned resource
*/
public Resource clone(String cloneName);
/**
* Opens a stream on this resource
*
* @return the opened input stream
*/
public InputStream openStream() throws IOException;
}