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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* Copyright © 2017-2018 Amdocs
* ================================================================================
* Licensed 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.
* ============LICENSE_END=========================================================
*/
package org.onap.aai.spike.event.incoming;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonElement;
import com.google.gson.annotations.SerializedName;
import org.onap.aai.spike.exception.SpikeException;
/**
* This class provides a generic representation of an Edge as provided by the graph data store.
*
*/
public class GizmoEdge {
/**
* The unique identifier used to identify this edge in the graph data store.
*/
@SerializedName("key")
private String id;
/** Type label assigned to this vertex. */
private String type;
/** Source vertex for our edge. */
private GizmoVertex source;
/** Target vertex for our edge. */
private GizmoVertex target;
/** Map of all of the properties assigned to this vertex. */
private JsonElement properties;
/** Marshaller/unmarshaller for converting to/from JSON. */
private static final Gson gson = new GsonBuilder().disableHtmlEscaping().create();
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public GizmoVertex getSource() {
return source;
}
public void setSource(GizmoVertex source) {
this.source = source;
}
public GizmoVertex getTarget() {
return target;
}
public void setTarget(GizmoVertex target) {
this.target = target;
}
public JsonElement getProperties() {
return properties;
}
public void setProperties(JsonElement properties) {
this.properties = properties;
}
/**
* Unmarshalls this Edge object into a JSON string.
*
* @return - A JSON format string representation of this Edge.
*/
public String toJson() {
return gson.toJson(this);
}
/**
* Marshalls the provided JSON string into a Edge object.
*
* @param json - The JSON string to produce the Edge from.
*
* @return - A Edge object.
*
* @throws SpikeException
*/
public static GizmoEdge fromJson(String json) throws SpikeException {
try {
// Make sure that we were actually provided a non-empty string
// before we
// go any further.
if (json == null || json.isEmpty()) {
throw new SpikeException("Empty or null JSON string.");
}
// Marshall the string into an Edge object.
return gson.fromJson(json, GizmoEdge.class);
} catch (Exception ex) {
throw new SpikeException("Unable to parse JSON string: " + ex.getMessage());
}
}
}
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