com.datastax.driver.dse.graph.DefaultPropertyDeserializer Maven / Gradle / Ivy
/*
* Copyright DataStax, Inc.
*
* This software can be used solely with DataStax Enterprise. Please consult the license at
* http://www.datastax.com/terms/datastax-dse-driver-license-terms
*/
package com.datastax.driver.dse.graph;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
import java.io.IOException;
class DefaultPropertyDeserializer extends StdDeserializer {
DefaultPropertyDeserializer() {
super(DefaultProperty.class);
}
@Override
public DefaultProperty deserialize(JsonParser parser, DeserializationContext ctx)
throws IOException {
if (!(parser instanceof PropertyGraphNodeParser))
throw new JsonParseException(
parser,
"Cannot deserialize property if parser is not instance of PropertyGraphNodeParser");
PropertyGraphNodeParser propertyParser = (PropertyGraphNodeParser) parser;
String name = propertyParser.propertyName;
if (name == null)
throw new JsonParseException(parser, "Cannot deserialize property without its name");
Element parent = propertyParser.parent;
if (parent == null)
throw new JsonParseException(parser, "Cannot deserialize property with null parent");
JsonNode jacksonNode = parser.readValueAsTree();
DefaultProperty property = new DefaultProperty();
property.name = name;
property.value = new DefaultGraphNode(jacksonNode, (ObjectMapper) parser.getCodec());
property.parent = parent;
return property;
}
}