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package org.openecomp.sdc.be.dao.jsongraph.utils;
import java.io.IOException;
import java.util.Map;
import org.codehaus.jackson.JsonGenerationException;
import org.codehaus.jackson.map.DeserializationConfig;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.SerializationConfig.Feature;
import org.codehaus.jackson.map.annotate.JsonSerialize;
import org.codehaus.jackson.type.JavaType;
import org.codehaus.jackson.type.TypeReference;
import org.openecomp.sdc.be.datatypes.tosca.ToscaDataDefinition;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class JsonParserUtils {
private static ObjectMapper mapper = new ObjectMapper();
private static Logger logger = LoggerFactory.getLogger(JsonParserUtils.class.getName());
public static <T> String jsonToString(T elementToRepresent) throws IOException, JsonGenerationException, JsonMappingException {
mapper.configure(Feature.FAIL_ON_EMPTY_BEANS, false);
mapper.setSerializationInclusion(JsonSerialize.Inclusion.NON_NULL);
return mapper.writeValueAsString(elementToRepresent);
}
public static Map<String, Object> parseToJson(String json) {
Map<String, Object> object = null;
if (json == null || json.isEmpty()) {
return null;
}
mapper.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
mapper.configure(Feature.FAIL_ON_EMPTY_BEANS, false);
mapper.setSerializationInclusion(JsonSerialize.Inclusion.NON_NULL);
TypeReference<Map<String, Object>> typeRef = new TypeReference<Map<String, Object>>() {
};
try {
object = mapper.readValue(json, typeRef);
} catch (Exception e) {
logger.debug("Failed to parse json {}", json, e);
}
return object;
}
public static <T extends ToscaDataDefinition> Map<String, T> parseToJson(String json, Class <T> clazz) {
Map<String, T> object = null;
if (json == null || json.isEmpty()) {
return null;
}
mapper.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
mapper.configure(Feature.FAIL_ON_EMPTY_BEANS, false);
mapper.setSerializationInclusion(JsonSerialize.Inclusion.NON_NULL);
JavaType type = mapper.getTypeFactory().constructMapType(Map.class, String.class, clazz);
try {
object = mapper.readValue(json, type);
} catch (Exception e) {
logger.debug("Failed to parse json {}", json, e);
}
return object;
}
}
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