/*
* 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.chemistry.opencmis.client.bindings.spi.atompub;
import static org.apache.chemistry.opencmis.commons.impl.Converter.convert;
import java.io.OutputStream;
import java.math.BigInteger;
import java.util.ArrayList;
import org.apache.chemistry.opencmis.client.bindings.spi.Session;
import org.apache.chemistry.opencmis.client.bindings.spi.atompub.objects.AtomElement;
import org.apache.chemistry.opencmis.client.bindings.spi.atompub.objects.AtomEntry;
import org.apache.chemistry.opencmis.client.bindings.spi.atompub.objects.AtomFeed;
import org.apache.chemistry.opencmis.client.bindings.spi.atompub.objects.AtomLink;
import org.apache.chemistry.opencmis.commons.data.ExtensionsData;
import org.apache.chemistry.opencmis.commons.data.ObjectData;
import org.apache.chemistry.opencmis.commons.data.ObjectList;
import org.apache.chemistry.opencmis.commons.enums.IncludeRelationships;
import org.apache.chemistry.opencmis.commons.exceptions.CmisObjectNotFoundException;
import org.apache.chemistry.opencmis.commons.impl.Constants;
import org.apache.chemistry.opencmis.commons.impl.JaxBHelper;
import org.apache.chemistry.opencmis.commons.impl.UrlBuilder;
import org.apache.chemistry.opencmis.commons.impl.dataobjects.ObjectListImpl;
import org.apache.chemistry.opencmis.commons.impl.jaxb.CmisObjectType;
import org.apache.chemistry.opencmis.commons.impl.jaxb.CmisQueryType;
import org.apache.chemistry.opencmis.commons.impl.jaxb.EnumIncludeRelationships;
import org.apache.chemistry.opencmis.commons.spi.DiscoveryService;
import org.apache.chemistry.opencmis.commons.spi.Holder;
/**
* Discovery Service AtomPub client.
*
* @author <a href="mailto:fmueller@opentext.com">Florian Müller</a>
*
*/
public class DiscoveryServiceImpl extends AbstractAtomPubService implements DiscoveryService {
/**
* Constructor.
*/
public DiscoveryServiceImpl(Session session) {
setSession(session);
}
/*
* (non-Javadoc)
*
* @see
* org.apache.opencmis.client.provider.DiscoveryService#getContentChanges
* (java.lang.String, org.apache.opencmis.client.provider.Holder,
* java.lang.Boolean, java.lang.String, java.lang.Boolean,
* java.lang.Boolean, java.math.BigInteger,
* org.apache.opencmis.client.provider.ExtensionsData)
*/
public ObjectList getContentChanges(String repositoryId, Holder<String> changeLogToken, Boolean includeProperties,
String filter, Boolean includePolicyIds, Boolean includeACL, BigInteger maxItems, ExtensionsData extension) {
ObjectListImpl result = new ObjectListImpl();
// find the link
String link = loadRepositoryLink(repositoryId, Constants.REP_REL_CHANGES);
if (link == null) {
throw new CmisObjectNotFoundException("Unknown repository or content changes not supported!");
}
UrlBuilder url = new UrlBuilder(link);
url.addParameter(Constants.PARAM_CHANGE_LOG_TOKEN, (changeLogToken == null ? null : changeLogToken.getValue()));
url.addParameter(Constants.PARAM_PROPERTIES, includeProperties);
url.addParameter(Constants.PARAM_FILTER, filter);
url.addParameter(Constants.PARAM_POLICY_IDS, includePolicyIds);
url.addParameter(Constants.PARAM_ACL, includeACL);
url.addParameter(Constants.PARAM_MAX_ITEMS, maxItems);
// read and parse
HttpUtils.Response resp = read(url);
AtomFeed feed = parse(resp.getStream(), AtomFeed.class);
// handle top level
for (AtomElement element : feed.getElements()) {
if (element.getObject() instanceof AtomLink) {
if (isNextLink(element)) {
result.setHasMoreItems(Boolean.TRUE);
}
} else if (isInt(NAME_NUM_ITEMS, element)) {
result.setNumItems((BigInteger) element.getObject());
}
}
// get the changes
if (!feed.getEntries().isEmpty()) {
result.setObjects(new ArrayList<ObjectData>(feed.getEntries().size()));
for (AtomEntry entry : feed.getEntries()) {
ObjectData hit = null;
// walk through the entry
for (AtomElement element : entry.getElements()) {
if (element.getObject() instanceof CmisObjectType) {
hit = convert((CmisObjectType) element.getObject());
}
}
if (hit != null) {
result.getObjects().add(hit);
}
}
}
return result;
}
/*
* (non-Javadoc)
*
* @see
* org.apache.opencmis.client.provider.DiscoveryService#query(java.lang.
* String, java.lang.String, java.lang.Boolean, java.lang.Boolean,
* org.apache.opencmis.commons.enums.IncludeRelationships, java.lang.String,
* java.math.BigInteger, java.math.BigInteger,
* org.apache.opencmis.client.provider.ExtensionsData)
*/
public ObjectList query(String repositoryId, String statement, Boolean searchAllVersions,
Boolean includeAllowableActions, IncludeRelationships includeRelationships, String renditionFilter,
BigInteger maxItems, BigInteger skipCount, ExtensionsData extension) {
ObjectListImpl result = new ObjectListImpl();
// find the link
String link = loadCollection(repositoryId, Constants.COLLECTION_QUERY);
if (link == null) {
throw new CmisObjectNotFoundException("Unknown repository or query not supported!");
}
UrlBuilder url = new UrlBuilder(link);
// compile query request
final CmisQueryType query = new CmisQueryType();
query.setStatement(statement);
query.setSearchAllVersions(searchAllVersions);
query.setIncludeAllowableActions(includeAllowableActions);
query.setIncludeRelationships(convert(EnumIncludeRelationships.class, includeRelationships));
query.setRenditionFilter(renditionFilter);
query.setMaxItems(maxItems);
query.setSkipCount(skipCount);
// post the query and parse results
HttpUtils.Response resp = post(url, Constants.MEDIATYPE_QUERY, new HttpUtils.Output() {
public void write(OutputStream out) throws Exception {
JaxBHelper.marshal(JaxBHelper.CMIS_OBJECT_FACTORY.createQuery(query), out, false);
}
});
AtomFeed feed = parse(resp.getStream(), AtomFeed.class);
// handle top level
for (AtomElement element : feed.getElements()) {
if (element.getObject() instanceof AtomLink) {
if (isNextLink(element)) {
result.setHasMoreItems(Boolean.TRUE);
}
} else if (isInt(NAME_NUM_ITEMS, element)) {
result.setNumItems((BigInteger) element.getObject());
}
}
// get the result set
if (!feed.getEntries().isEmpty()) {
result.setObjects(new ArrayList<ObjectData>(feed.getEntries().size()));
for (AtomEntry entry : feed.getEntries()) {
ObjectData hit = null;
// walk through the entry
for (AtomElement element : entry.getElements()) {
if (element.getObject() instanceof CmisObjectType) {
hit = convert((CmisObjectType) element.getObject());
}
}
if (hit != null) {
result.getObjects().add(hit);
}
}
}
return result;
}
}