/*
* 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.isis.viewer.wicket.viewer.services;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Set;
import com.google.common.collect.Maps;
import org.apache.wicket.Session;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.isis.applib.annotation.DomainService;
import org.apache.isis.applib.annotation.NatureOfService;
import org.apache.isis.applib.services.bookmark.Bookmark;
import org.apache.isis.applib.services.hint.HintStore;
@DomainService(
nature = NatureOfService.DOMAIN,
menuOrder = "" + Integer.MAX_VALUE
)
public class HintStoreUsingWicketSession implements HintStore {
private static final long serialVersionUID = 1L;
private static final Logger LOG = LoggerFactory.getLogger(HintStoreUsingWicketSession.class);
@Override
public String get(final Bookmark bookmark, final String key) {
final Map<String, String> hintsForBookmark = hintsFor(bookmark);
final String value = hintsForBookmark.get(key);
if(LOG.isDebugEnabled()) {
LOG.debug(String.format("GET %s / %s returns %s", bookmark.toString(), key, value));
}
return value;
}
@Override
public void set(final Bookmark bookmark, final String key, final String value) {
final Map<String, String> hintsForBookmark = hintsFor(bookmark);
if(LOG.isDebugEnabled()) {
LOG.debug(String.format("SET %s / %s to %s", bookmark.toString(), key, value));
}
hintsForBookmark.put(key, value);
}
@Override
public void remove(final Bookmark bookmark, final String key) {
final Map<String, String> hintsForBookmark = hintsFor(bookmark);
if(LOG.isDebugEnabled()) {
LOG.debug(String.format("REMOVE %s / %s", bookmark.toString(), key));
}
hintsForBookmark.remove(key);
}
@Override
public Set<String> findHintKeys(final Bookmark bookmark) {
final Map<String, String> hintsForBookmark = hintsFor(bookmark);
return hintsForBookmark.keySet();
}
@Override
public void removeAll(final Bookmark bookmark) {
final String sessionAttribute = sessionAttributeFor(bookmark);
Session.get().removeAttribute(sessionAttribute);
}
protected Map<String, String> hintsFor(final Bookmark bookmark) {
final String sessionAttribute = sessionAttributeFor(bookmark);
LinkedHashMap<String, String> hints =
(LinkedHashMap<String, String>) Session.get().getAttribute(sessionAttribute);
if(hints == null) {
hints = Maps.newLinkedHashMap();
Session.get().setAttribute(sessionAttribute, hints);
}
return hints;
}
protected String sessionAttributeFor(final Bookmark bookmark) {
return "hint-" + (
bookmark instanceof BookmarkWithHintId
? ((BookmarkWithHintId) bookmark).toStringUsingHintId()
: bookmark.toString()
);
}
}