/*
* File: GetObjectHistoryFilter.java
*
* Copyright 2007 Macquarie E-Learning Centre Of Excellence
*
* 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 melcoe.fedora.pep.rest.filters;
import java.io.IOException;
import java.net.URI;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import melcoe.fedora.pep.PEPException;
import melcoe.fedora.util.LogUtil;
import org.apache.axis.AxisFault;
import org.apache.log4j.Logger;
import com.sun.xacml.attr.AnyURIAttribute;
import com.sun.xacml.attr.AttributeValue;
import com.sun.xacml.attr.StringAttribute;
import com.sun.xacml.ctx.RequestCtx;
import fedora.common.Constants;
/**
* Handles the getObjectHistory operation.
*
* @author nishen@melcoe.mq.edu.au
*/
public class GetObjectHistoryFilter
extends AbstractFilter {
private static Logger log =
Logger.getLogger(GetObjectHistoryFilter.class.getName());
/**
* Default constructor.
*
* @throws PEPException
*/
public GetObjectHistoryFilter()
throws PEPException {
super();
}
/*
* (non-Javadoc)
* @see
* melcoe.fedora.pep.rest.filters.RESTFilter#handleRequest(javax.servlet
* .http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
public RequestCtx handleRequest(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
if (request.getPathInfo() == null) {
log.error("Bad request: " + request.getRequestURI());
throw new ServletException("Bad request: "
+ request.getRequestURI());
}
String[] parts = request.getPathInfo().split("/");
if (parts.length < 2) {
log.info("Not enough path components on the URI.");
throw new ServletException("Not enough path components on the URI.");
}
RequestCtx req = null;
String pid = null;
pid = parts[1];
Map<URI, AttributeValue> actions = new HashMap<URI, AttributeValue>();
Map<URI, AttributeValue> resAttr = new HashMap<URI, AttributeValue>();
try {
if (pid != null && !"".equals(pid)) {
resAttr.put(Constants.OBJECT.PID.getURI(),
new StringAttribute(pid));
}
// XACML 1.0 conformance. resource-id is mandatory. Remove when
// switching to 2.0
if (pid != null && !"".equals(pid)) {
resAttr
.put(new URI("urn:oasis:names:tc:xacml:1.0:resource:resource-id"),
new AnyURIAttribute(new URI(pid)));
}
actions.put(Constants.ACTION.ID.getURI(),
new StringAttribute(Constants.ACTION.GET_OBJECT_HISTORY
.getURI().toASCIIString()));
actions.put(Constants.ACTION.API.getURI(),
new StringAttribute(Constants.ACTION.APIA.getURI()
.toASCIIString()));
req =
getContextHandler().buildRequest(getSubjects(request),
actions,
resAttr,
getEnvironment(request));
LogUtil.statLog(request.getRemoteUser(),
Constants.ACTION.GET_OBJECT_HISTORY.getURI()
.toASCIIString(),
pid,
null);
} catch (Exception e) {
log.error(e.getMessage(), e);
throw AxisFault.makeFault(e);
}
return req;
}
/*
* (non-Javadoc)
* @see
* melcoe.fedora.pep.rest.filters.RESTFilter#handleResponse(javax.servlet
* .http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
public RequestCtx handleResponse(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
return null;
}
}