/*
* (c) Copyright Reserved EVRYTHNG Limited 2016. All rights reserved.
* Use of this material is subject to license.
* Copying and unauthorised use of this material strictly prohibited.
*/
package com.evrythng.java.wrapper.mapping;
import com.evrythng.java.wrapper.util.JSONUtils;
import com.evrythng.thng.resource.model.store.BatchPopulatingTask;
import com.evrythng.thng.resource.model.store.FileBasedAdiInputParameters;
import com.evrythng.thng.resource.model.store.FixedAmountAdiInputParameters;
import com.evrythng.thng.resource.model.store.IdentifiersListBasedAdiInputParameters;
import com.evrythng.thng.resource.model.store.ListBasedAdiInputParameters;
import com.evrythng.thng.resource.model.store.PrivateFileBasedAdiInputParameters;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
public class BatchPopulatingTaskInputParametersDeserializer extends StdDeserializer<BatchPopulatingTask.InputParameters> {
private static final long serialVersionUID = -1219958118814469079L;
public BatchPopulatingTaskInputParametersDeserializer() {
super(BatchPopulatingTask.InputParameters.class);
}
@Override
public BatchPopulatingTask.InputParameters deserialize(final JsonParser jp, final DeserializationContext ctx)
throws IOException {
ObjectMapper mapper = JSONUtils.OBJECT_MAPPER;
JsonNode node = mapper.readTree(jp);
JsonNode typeNode = node.get(BatchPopulatingTask.InputParameters.FIELD_TYPE);
if (typeNode == null) {
throw new JsonMappingException("Cannot deserialize adi generation input parameters without type field");
}
String typeRaw = getFieldValue(typeNode);
Class<? extends BatchPopulatingTask.InputParameters> subtypeClass = classForType(
BatchPopulatingTask.InputParameters.Type.valueOf(typeRaw.toUpperCase()));
return mapper.readValue(node.toString(), subtypeClass);
}
private Class<? extends BatchPopulatingTask.InputParameters> classForType(
final BatchPopulatingTask.InputParameters.Type type) {
switch (type) {
case FIXED_AMOUNT:
return FixedAmountAdiInputParameters.class;
case FILE_BASED:
return FileBasedAdiInputParameters.class;
case PRIVATE_FILE_BASED:
return PrivateFileBasedAdiInputParameters.class;
case LIST_BASED:
return ListBasedAdiInputParameters.class;
case IDENTIFIERS_LIST_BASED:
return IdentifiersListBasedAdiInputParameters.class;
}
throw new IllegalArgumentException("Unsupported adi generation quantifier type: " + type);
}
private <T> T getFieldValue(final JsonNode node) {
if (node == null) {
return null;
}
Object value = null;
if (node.isBoolean()) {
value = node.asBoolean();
}
if (node.isNumber()) {
value = node.asDouble();
}
if (node.isTextual()) {
value = node.asText();
}
if (node.isArray()) {
value = new ArrayList<>();
}
if (node.isObject()) {
value = new HashMap<>();
}
return (T) value;
}
}