/**
* 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.cloud.message;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Map.Entry;
import org.structr.api.graph.PropertyContainer;
import org.structr.core.graph.SyncCommand;
/**
* Abstract superclass of {@link NodeDataContainer} and {@link RelationshipDataContainer}
*
*
*/
public abstract class DataContainer extends Message {
protected Map<String, Object> properties = new LinkedHashMap<>();
protected int sequenceNumber = 0;
public DataContainer() {}
public DataContainer(final int sequenceNumber) {
this.sequenceNumber = sequenceNumber;
}
/**
* Return the properties map
*
* @return properties
*/
public Map<String, Object> getProperties() {
return properties;
}
public int getSequenceNumber() {
return sequenceNumber;
}
// ----- protected methods -----
@Override
protected void deserializeFrom(DataInputStream inputStream) throws IOException {
this.sequenceNumber = (Integer)SyncCommand.deserialize(inputStream);
final int num = (Integer)SyncCommand.deserialize(inputStream);
for (int i=0; i<num; i++) {
final String key = (String)SyncCommand.deserialize(inputStream);
final Object value = SyncCommand.deserialize(inputStream);
properties.put(key, value);
}
}
@Override
protected void serializeTo(DataOutputStream outputStream) throws IOException {
SyncCommand.serialize(outputStream, sequenceNumber);
SyncCommand.serialize(outputStream, properties.size());
for (final Entry<String, Object> entry : properties.entrySet()) {
SyncCommand.serialize(outputStream, entry.getKey());
SyncCommand.serialize(outputStream, entry.getValue());
}
}
protected void collectProperties(final PropertyContainer propertyContainer, final Iterable<String> propertyKeys) {
for (String key : propertyKeys) {
Object value = propertyContainer.getProperty(key);
if (value != null) {
properties.put(key, value);
}
}
}
}