/*
* 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.jackrabbit.spi2davex;
import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.HeadMethod;
import org.apache.jackrabbit.commons.webdav.JcrRemotingConstants;
import org.apache.jackrabbit.spi2dav.ExceptionConverter;
import org.apache.jackrabbit.spi2dav.ItemResourceConstants;
import org.apache.jackrabbit.webdav.DavConstants;
import org.apache.jackrabbit.webdav.DavException;
import org.apache.jackrabbit.webdav.DavServletResponse;
import org.apache.jackrabbit.webdav.MultiStatusResponse;
import org.apache.jackrabbit.webdav.client.methods.DavMethodBase;
import org.apache.jackrabbit.webdav.client.methods.PropFindMethod;
import org.apache.jackrabbit.webdav.property.DavProperty;
import org.apache.jackrabbit.webdav.property.DavPropertyNameSet;
import org.apache.jackrabbit.webdav.property.DavPropertySet;
import javax.jcr.ItemNotFoundException;
import javax.jcr.PropertyType;
import javax.jcr.RepositoryException;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
/**
* <code>ValueLoader</code>...
*/
class ValueLoader {
private final HttpClient client;
ValueLoader(HttpClient client) {
this.client = client;
}
void loadBinary(String uri, int index, Target target) throws RepositoryException, IOException {
GetMethod method = new GetMethod(uri);
try {
int statusCode = client.executeMethod(method);
if (statusCode == DavServletResponse.SC_OK) {
target.setStream(method.getResponseBodyAsStream());
} else {
throw ExceptionConverter.generate(new DavException(statusCode, ("Unable to load binary at " + uri + " - Status line = " + method.getStatusLine().toString())));
}
} finally {
method.releaseConnection();
}
}
public Map<String, String> loadHeaders(String uri, String[] headerNames) throws IOException,
RepositoryException {
HeadMethod method = new HeadMethod(uri);
try {
int statusCode = client.executeMethod(method);
if (statusCode == DavServletResponse.SC_OK) {
Map<String, String> headers = new HashMap<String, String>();
for (String name : headerNames) {
Header hdr = method.getResponseHeader(name);
if (hdr != null) {
headers.put(name, hdr.getValue());
}
}
return headers;
} else {
throw ExceptionConverter.generate(new DavException(statusCode, ("Unable to load headers at " + uri + " - Status line = " + method.getStatusLine().toString())));
}
} finally {
method.releaseConnection();
}
}
int loadType(String uri) throws RepositoryException, IOException {
DavPropertyNameSet nameSet = new DavPropertyNameSet();
nameSet.add(JcrRemotingConstants.JCR_TYPE_LN, ItemResourceConstants.NAMESPACE);
DavMethodBase method = null;
try {
method = new PropFindMethod(uri, nameSet, DavConstants.DEPTH_0);
client.executeMethod(method);
method.checkSuccess();
MultiStatusResponse[] responses = method.getResponseBodyAsMultiStatus().getResponses();
if (responses.length == 1) {
DavPropertySet props = responses[0].getProperties(DavServletResponse.SC_OK);
DavProperty<?> type = props.get(JcrRemotingConstants.JCR_TYPE_LN, ItemResourceConstants.NAMESPACE);
if (type != null) {
return PropertyType.valueFromName(type.getValue().toString());
} else {
throw new RepositoryException("Internal error. Cannot retrieve property type at " + uri);
}
} else {
throw new ItemNotFoundException("Internal error. Cannot retrieve property type at " + uri);
}
} catch (DavException e) {
throw ExceptionConverter.generate(e);
} finally {
if (method != null) {
method.releaseConnection();
}
}
}
//--------------------------------------------------------------------------
/**
* Internal interface
*/
interface Target {
/**
* @param in
* @throws IOException
*/
void setStream(InputStream in) throws IOException;
/**
* Resets (clears) the state and this target is in the state as
* prior to setStream()
*/
void reset();
}
}