/**
* Copyright (C) 2010-2017 Structr GmbH
*
* This file is part of Structr <http://structr.org>.
*
* Structr is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* Structr is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Structr. If not, see <http://www.gnu.org/licenses/>.
*/
package org.structr.websocket.command;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.reflect.TypeToken;
import java.util.Map;
import java.util.Map.Entry;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.structr.common.SecurityContext;
import org.structr.common.error.FrameworkException;
import org.structr.core.Result;
import org.structr.core.app.Query;
import org.structr.core.app.StructrApp;
import org.structr.core.property.PropertyKey;
import org.structr.core.property.PropertyMap;
import org.structr.schema.SchemaHelper;
import org.structr.websocket.StructrWebSocket;
import org.structr.websocket.message.MessageBuilder;
import org.structr.websocket.message.WebSocketMessage;
//~--- classes ----------------------------------------------------------------
/**
* Websocket command to retrieve nodes of a given type which are on root level,
* i.e. not children of another node.
*
* To get all nodes of a certain type, see the {@link GetCommand}.
*
*
*
*/
public class QueryCommand extends AbstractCommand {
private static final Logger logger = LoggerFactory.getLogger(QueryCommand.class.getName());
static {
StructrWebSocket.addCommand(QueryCommand.class);
}
@Override
public void processMessage(final WebSocketMessage webSocketData) {
final SecurityContext securityContext = getWebSocket().getSecurityContext();
final Map<String, Object> nodeData = webSocketData.getNodeData();
final String rawType = (String)nodeData.get("type");
final String properties = (String)nodeData.get("properties");
final Boolean exact = (Boolean)nodeData.get("exact");
final Class type = SchemaHelper.getEntityClassForRawType(rawType);
if (type == null) {
getWebSocket().send(MessageBuilder.status().code(404).message("Type " + rawType + " not found").build(), true);
return;
}
final String sortOrder = webSocketData.getSortOrder();
final String sortKey = webSocketData.getSortKey();
final int pageSize = webSocketData.getPageSize();
final int page = webSocketData.getPage();
final PropertyKey sortProperty = StructrApp.getConfiguration().getPropertyKeyForJSONName(type, sortKey);
final Query query = StructrApp.getInstance(securityContext)
.nodeQuery(type)
.sort(sortProperty)
.order("desc".equals(sortOrder))
.page(page)
.pageSize(pageSize);
if (properties != null) {
try {
final Gson gson = new GsonBuilder().create();
final Map<String, Object> querySource = gson.fromJson(properties, new TypeToken<Map<String, Object>>() {}.getType());
final PropertyMap queryMap = PropertyMap.inputTypeToJavaType(securityContext, type, querySource);
final boolean inexactQuery = exact != null && exact == false;
// add properties to query
for (final Entry<PropertyKey, Object> entry : queryMap.entrySet()) {
query.and(entry.getKey(), entry.getValue(), !inexactQuery);
}
} catch (FrameworkException fex) {
logger.warn("Exception occured", fex);
getWebSocket().send(MessageBuilder.status().code(fex.getStatus()).message(fex.getMessage()).build(), true);
return;
}
}
try {
// do search
final Result result = query.getResult();
// save raw result count
int resultCountBeforePaging = result.getRawResultCount(); // filteredResults.size();
// set full result list
webSocketData.setResult(result.getResults());
webSocketData.setRawResultCount(resultCountBeforePaging);
// send only over local connection
getWebSocket().send(webSocketData, true);
} catch (FrameworkException fex) {
logger.warn("Exception occured", fex);
getWebSocket().send(MessageBuilder.status().code(fex.getStatus()).message(fex.getMessage()).build(), true);
}
}
//~--- get methods ----------------------------------------------------
@Override
public String getCommand() {
return "QUERY";
}
}