Package org.apache.pinot.common.function.scalar

Class JsonFunctions

java.lang.Object

org.apache.pinot.common.function.scalar.JsonFunctions

public class JsonFunctions
extends Object

Inbuilt json related transform functions An example DimFieldSpec that needs the toJsonMapStr function: "dimFieldSpecs": [{ "name": "jsonMapStr", "dataType": "STRING", "transformFunction": "toJsonMapStr(jsonMap)" }]

Method Summary

Modifier and Type	Method	Description
static String	jsonFormat(Object object)	Convert object to Json String
static Object	jsonPath(Object object, String jsonPath)	Extract object based on Json path
static Object[]	jsonPathArray(Object object, String jsonPath)	Extract object array based on Json path
static Object[]	jsonPathArrayDefaultEmpty(Object object, String jsonPath)
static double	jsonPathDouble(Object object, String jsonPath)	Extract from Json with path to Double
static double	jsonPathDouble(Object object, String jsonPath, double defaultValue)	Extract from Json with path to Double
static long	jsonPathLong(Object object, String jsonPath)	Extract from Json with path to Long
static long	jsonPathLong(Object object, String jsonPath, long defaultValue)	Extract from Json with path to Long
static String	jsonPathString(Object object, String jsonPath)	Extract from Json with path to String
static String	jsonPathString(Object object, String jsonPath, String defaultValue)	Extract from Json with path to String
static String	toJsonMapStr(Map map)	Convert Map to Json String

Methods inherited from class java.lang.Object

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

Method Detail

toJsonMapStr

public static String toJsonMapStr(@Nullable
                                  Map map)
                           throws com.fasterxml.jackson.core.JsonProcessingException

Convert Map to Json String

Throws:

com.fasterxml.jackson.core.JsonProcessingException

jsonFormat

public static String jsonFormat(Object object)
                         throws com.fasterxml.jackson.core.JsonProcessingException

Convert object to Json String

Throws:

com.fasterxml.jackson.core.JsonProcessingException

jsonPath

public static Object jsonPath(Object object,
                              String jsonPath)

Extract object based on Json path

jsonPathArray

public static Object[] jsonPathArray(Object object,
                                     String jsonPath)

Extract object array based on Json path

jsonPathArrayDefaultEmpty

public static Object[] jsonPathArrayDefaultEmpty(@Nullable
                                                 Object object,
                                                 String jsonPath)

jsonPathString

public static String jsonPathString(Object object,
                                    String jsonPath)
                             throws com.fasterxml.jackson.core.JsonProcessingException

Extract from Json with path to String

Throws:

com.fasterxml.jackson.core.JsonProcessingException

jsonPathString

public static String jsonPathString(@Nullable
                                    Object object,
                                    String jsonPath,
                                    String defaultValue)

Extract from Json with path to String

jsonPathLong

public static long jsonPathLong(Object object,
                                String jsonPath)

Extract from Json with path to Long

jsonPathLong

public static long jsonPathLong(@Nullable
                                Object object,
                                String jsonPath,
                                long defaultValue)

Extract from Json with path to Long

jsonPathDouble

public static double jsonPathDouble(Object object,
                                    String jsonPath)

Extract from Json with path to Double

jsonPathDouble

public static double jsonPathDouble(@Nullable
                                    Object object,
                                    String jsonPath,
                                    double defaultValue)

Extract from Json with path to Double