/*
* ToroDB
* Copyright © 2014 8Kdata Technology (www.8kdata.com)
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.torodb.mongodb.commands.impl.general;
import com.eightkdata.mongowp.bson.BsonDocument;
import com.eightkdata.mongowp.bson.BsonDocument.Entry;
import com.eightkdata.mongowp.bson.BsonValue;
import com.eightkdata.mongowp.exceptions.CommandFailed;
import com.google.common.base.Splitter;
import com.torodb.core.language.AttributeReference;
import com.torodb.kvdocument.conversion.mongowp.MongoWpConverter;
import com.torodb.kvdocument.values.KvValue;
public class AttrRefHelper {
public static KvValue<?> calculateValueAndAttRef(BsonDocument doc,
AttributeReference.Builder refBuilder) throws CommandFailed {
if (doc.size() != 1) {
throw new CommandFailed("find", "The given query is not supported right now");
}
Entry<?> entry = doc.getFirstEntry();
for (String subKey : Splitter.on('.').split(entry.getKey())) {
refBuilder.addObjectKey(subKey);
}
BsonValue<?> value = entry.getValue();
if (value.isArray()) {
throw new CommandFailed("find", "Filters with arrays are not supported right now");
}
if (value.isDocument()) {
return calculateValueAndAttRef(value.asDocument(), refBuilder);
} else {
return MongoWpConverter.translate(value);
}
}
}