/*
* Copyright 2010 Alibaba Group Holding Limited.
* All rights reserved.
*
* Licensed 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 com.alibaba.antx.config.resource;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import com.alibaba.antx.config.ConfigException;
public abstract class Resource implements Comparable {
private final Session session;
private final ResourceURI uri;
public Resource(Session session, ResourceURI uri) {
this.session = session;
this.uri = uri;
}
public final Session getSession() {
return session;
}
public final ResourceURI getURI() {
return uri;
}
public abstract Resource getRelatedResource(String suburi);
public String getContentType() {
return null;
}
public String getCharset() {
return null;
}
public abstract byte[] getContent();
public abstract InputStream getInputStream();
public abstract OutputStream getOutputStream();
public abstract boolean isDirectory();
public abstract List list();
/**
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*/
public int compareTo(Object other) {
if (other instanceof Resource) {
Resource otherResource = (Resource) other;
int type = isDirectory() ? 0 : 1;
int otherType = otherResource.isDirectory() ? 0 : 1;
if (type != otherType) {
return type - otherType;
} else {
return uri.getName().compareTo(otherResource.uri.getName());
}
}
return -1;
}
protected void assertFile() {
if (isDirectory()) {
throw new ConfigException("Resource is not a file: " + getURI());
}
}
protected void assertDirectory() {
if (!isDirectory()) {
throw new ConfigException("Resource is not a directory: " + getURI());
}
}
public String toString() {
return uri.toString();
}
}