Package org.apache.gravitino.json

Class JsonUtils

java.lang.Object

org.apache.gravitino.json.JsonUtils

public class JsonUtils
extends Object

Utility class for working with JSON data.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	JsonUtils.ColumnDefaultValueDeserializer	Custom JSON deserializer for Column default value.
static class	JsonUtils.ColumnDefaultValueSerializer	Custom JSON serializer for Column default value.
static class	JsonUtils.ColumnPositionDeserializer	Custom JSON deserializer for ColumnPosition objects.
static class	JsonUtils.ColumnPositionSerializer	Custom JSON serializer for SortOrderDTO objects.
static class	JsonUtils.DistributionDeserializer	Custom JSON deserializer for DistributionDTO objects.
static class	JsonUtils.DistributionSerializer	Custom JSON serializer for DistributionDTO objects.
static class	JsonUtils.IndexDeserializer	Custom JSON deserializer for Index objects.
static class	JsonUtils.IndexSerializer	Custom JSON serializer for Index objects.
static class	JsonUtils.NameIdentifierDeserializer	Custom JSON deserializer for NameIdentifier objects.
static class	JsonUtils.NameIdentifierSerializer	Custom JSON serializer for NameIdentifier objects.
static class	JsonUtils.PartitionDTODeserializer	Custom JSON deserializer for PartitionDTO objects.
static class	JsonUtils.PartitionDTOSerializer	Custom JSON serializer for PartitionDTO objects.
static class	JsonUtils.PartitioningDeserializer	Custom JSON deserializer for Partitioning objects.
static class	JsonUtils.PartitioningSerializer	Custom JSON serializer for PartitionDTO objects.
static class	JsonUtils.SortOrderDeserializer	Custom JSON deserializer for SortOrderDTO objects.
static class	JsonUtils.SortOrderSerializer	Custom JSON serializer for SortOrderDTO objects.
static class	JsonUtils.StatisticValueDeserializer	Custom JSON deserializer for StatisticValue objects.
static class	JsonUtils.StatisticValueSerializer	Custom JSON serializer for StatisticValue objects.
static class	JsonUtils.TypeDeserializer	Custom JSON deserializer for Gravitino Type objects.
static class	JsonUtils.TypeSerializer	Custom JSON serializer for Gravitino Type objects.

Method Summary

Modifier and Type	Method	Description
static com.fasterxml.jackson.databind.ObjectMapper	anyFieldMapper()	Get the shared AnyFieldMapper instance for JSON serialization/deserialization.
static int	getInt(String property, com.fasterxml.jackson.databind.JsonNode node)	Get an int value from a JSON node property.
static long	getLong(String property, com.fasterxml.jackson.databind.JsonNode node)	Get a long value from a JSON node property.
static String	getString(String property, com.fasterxml.jackson.databind.JsonNode node)	Get a string value from a JSON node property.
static com.fasterxml.jackson.databind.ObjectMapper	objectMapper()	Returns a shared ObjectMapper instance for JSON serialization/deserialization test.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

objectMapper

public static com.fasterxml.jackson.databind.ObjectMapper objectMapper()

Returns a shared ObjectMapper instance for JSON serialization/deserialization test.

Note: This instance is intended for testing purposes only. For production use, obtain an ObjectMapper from the following providers:

• Client side: org.apache.gravitino.client.ObjectMapperProvider
• Server side: org.apache.gravitino.server.web.ObjectMapperProvider

Returns:

the shared ObjectMapper instance for testing.

anyFieldMapper

public static com.fasterxml.jackson.databind.ObjectMapper anyFieldMapper()

Get the shared AnyFieldMapper instance for JSON serialization/deserialization.

Returns:

The ObjectMapper instance.

getInt

public static int getInt(String property,
 com.fasterxml.jackson.databind.JsonNode node)

Get an int value from a JSON node property.

Parameters:

property - The property name.

node - The JSON node.

Returns:

The int value.

getLong

public static long getLong(String property,
 com.fasterxml.jackson.databind.JsonNode node)

Get a long value from a JSON node property.

Parameters:

property - The property name.

node - The JSON node.

Returns:

The long value.

getString

public static String getString(String property,
 com.fasterxml.jackson.databind.JsonNode node)

Get a string value from a JSON node property.

Parameters:

property - The property name.

node - The JSON node.

Returns:

The string value.

Throws:

IllegalArgumentException - if the property is missing in the JSON node.