com.arangodb.internal.serde.SerdeUtils Maven / Gradle / Ivy
package com.arangodb.internal.serde;
import com.arangodb.ArangoDBException;
import com.arangodb.shaded.fasterxml.jackson.core.JsonProcessingException;
import com.arangodb.shaded.fasterxml.jackson.databind.JavaType;
import com.arangodb.shaded.fasterxml.jackson.databind.JsonNode;
import com.arangodb.shaded.fasterxml.jackson.databind.ObjectMapper;
import com.arangodb.shaded.fasterxml.jackson.databind.type.TypeFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public enum SerdeUtils {
INSTANCE;
private static final Logger LOGGER = LoggerFactory.getLogger(SerdeUtils.class);
private final ObjectMapper jsonMapper = new ObjectMapper();
public static Type constructListType(Class clazz) {
return TypeFactory.defaultInstance().constructCollectionType(List.class, clazz);
}
public static Type constructParametricType(Class rawType, Type... rawArgs) {
if (rawArgs == null || rawArgs.length == 0 || rawArgs[0] == null) {
return rawType;
} else {
return new InternalParameterizedType(rawType, rawArgs);
}
}
public static Type convertToType(final JavaType javaType) {
List args = new ArrayList<>();
for (JavaType it : javaType.getBindings().getTypeParameters()) {
Type type = convertToType(it);
args.add(type);
}
return constructParametricType(javaType.getRawClass(), args.toArray(new Type[0]));
}
static void checkSupportedJacksonVersion() {
Arrays.asList(
com.fasterxml.jackson.databind.cfg.PackageVersion.VERSION,
com.fasterxml.jackson.core.json.PackageVersion.VERSION
).forEach(version -> {
int major = version.getMajorVersion();
int minor = version.getMinorVersion();
if (major != 2 || minor < 10 || minor > 15) {
LOGGER.warn("Unsupported Jackson version: {}", version);
}
});
}
/**
* Parse a JSON string.
*
* @param json JSON string to parse
* @return root of the parsed tree
*/
public JsonNode parseJson(final String json) {
try {
return jsonMapper.readTree(json);
} catch (JsonProcessingException e) {
throw new ArangoDBException(e);
}
}
/**
* @param data JsonNode
* @return JSON string
*/
public String writeJson(final JsonNode data) {
try {
return jsonMapper.writeValueAsString(data);
} catch (JsonProcessingException e) {
throw new ArangoDBException(e);
}
}
}