Package gov.nasa.pds.registry.common.util.json

Class NJsonDocUtils

java.lang.Object

gov.nasa.pds.registry.common.util.json.NJsonDocUtils

public class NJsonDocUtils
extends Object

Utility class to write NJSON (new-line delimited JSON) documents.

Author:

karpenko

Constructor Summary

Constructors

Constructor	Description
NJsonDocUtils()

Method Summary

Modifier and Type	Method	Description
static String	createPKJson(String id)	Create primary key JSON (first line in NJSON record)
static String	toEsFieldName(String fieldName)	Convert registry field name to the valid Elasticsearch field name.
static void	writeArray(com.google.gson.stream.JsonWriter jw, String key, Collection<String> values)	Write multivalued field as an array
static void	writeField(com.google.gson.stream.JsonWriter jw, String key, float value)	Write a field.
static void	writeField(com.google.gson.stream.JsonWriter jw, String key, long value)	Write a field.
static void	writeField(com.google.gson.stream.JsonWriter jw, String key, String value)	Write a field.
static void	writeField(com.google.gson.stream.JsonWriter jw, String key, Collection<String> values)	Write a field.
static void	writePK(Writer writer, String id)	Write primary key (first line in NJSON record)

Methods inherited from class java.lang.Object

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

Constructor Details

NJsonDocUtils

public NJsonDocUtils()

Method Details

createPKJson

public static String createPKJson(String id)
                           throws Exception

Create primary key JSON (first line in NJSON record)

Parameters:

id - primary key

Returns:

primary key JSON

Throws:

Exception - Generic exception

writePK

public static void writePK(Writer writer,
 String id)
                    throws Exception

Write primary key (first line in NJSON record)

Parameters:

writer - Generic writer

id - primary key

Throws:

Exception - Generic exception

writeField

public static void writeField(com.google.gson.stream.JsonWriter jw,
 String key,
 String value)
                       throws Exception

Write a field.

Parameters:

jw - JSON writer

key - a key / field name

value - a value

Throws:

Exception - Generic exception

writeField

public static void writeField(com.google.gson.stream.JsonWriter jw,
 String key,
 long value)
                       throws Exception

Write a field.

Parameters:

jw - JSON writer

key - a key / field name

value - a value

Throws:

Exception - Generic exception

writeField

public static void writeField(com.google.gson.stream.JsonWriter jw,
 String key,
 float value)
                       throws Exception

Write a field.

Parameters:

jw - JSON writer

key - a key / field name

value - a value

Throws:

Exception - Generic exception

writeField

public static void writeField(com.google.gson.stream.JsonWriter jw,
 String key,
 Collection<String> values)
                       throws Exception

Write a field.

Parameters:

jw - JSON writer

key - a key / field name

values - collection of values

Throws:

Exception - Generic exception

writeArray

public static void writeArray(com.google.gson.stream.JsonWriter jw,
 String key,
 Collection<String> values)
                       throws Exception

Write multivalued field as an array

Parameters:

jw - JSON writer

key - key / field name

values - collection of values

Throws:

Exception - an exception

toEsFieldName

public static String toEsFieldName(String fieldName)

Convert registry field name to the valid Elasticsearch field name. (Replace '.' with '/').

Parameters:

fieldName - a field name

Returns:

valid Elasticsearch field name