org.apache.gravitino.json

Class JsonUtils

java.lang.Object

org.apache.gravitino.json.JsonUtils

public class JsonUtils
extends java.lang.Object

Utility class for working with JSON data.

Nested Class Summary

Nested Classes

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

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(java.lang.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(java.lang.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 java.lang.String getString(java.lang.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:

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