Module datarush.library

Package com.pervasive.datarush.schema

Class JsonPatternBasedDiscovery

java.lang.Object

com.pervasive.datarush.schema.PatternBasedDiscovery

com.pervasive.datarush.schema.JsonPatternBasedDiscovery

All Implemented Interfaces:

TextRecordDiscoverer

public class JsonPatternBasedDiscovery
extends PatternBasedDiscovery

Discovers a schema for JSON text by checking values against the discovered JSON types and various regular expressions which map to data types.

Field Summary

Fields inherited from class com.pervasive.datarush.schema.PatternBasedDiscovery

DEFAULT_PATTERNS

Constructor Summary

Constructors

Constructor	Description
JsonPatternBasedDiscovery()
JsonPatternBasedDiscovery(List<TypePattern> patterns)

Method Summary

Modifier and Type	Method	Description
static List<List<String>>	convertJsonAnalysis(List<String> fieldNames, List<com.fasterxml.jackson.databind.JsonNode> recordData)
static List<List<String>>	convertJsonAnalysis(List<String> fieldNames, List<com.fasterxml.jackson.databind.JsonNode> recordData, String nullIndicator)
TextRecord	discoverForRead(List<String> fieldNames, List<com.fasterxml.jackson.databind.JsonNode> jsonRecords, TextConversionDefaults defaults, boolean includeObjects)

Methods inherited from class com.pervasive.datarush.schema.PatternBasedDiscovery

discoverForRead, generateForWrite, mergeTypes, predictType

Methods inherited from class java.lang.Object

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

Constructor Detail

JsonPatternBasedDiscovery

public JsonPatternBasedDiscovery()

JsonPatternBasedDiscovery

public JsonPatternBasedDiscovery(List<TypePattern> patterns)

Method Detail

discoverForRead

public TextRecord discoverForRead(List<String> fieldNames,
                                  List<com.fasterxml.jackson.databind.JsonNode> jsonRecords,
                                  TextConversionDefaults defaults,
                                  boolean includeObjects)

convertJsonAnalysis

public static List<List<String>> convertJsonAnalysis(List<String> fieldNames,
                                                     List<com.fasterxml.jackson.databind.JsonNode> recordData)

convertJsonAnalysis

public static List<List<String>> convertJsonAnalysis(List<String> fieldNames,
                                                     List<com.fasterxml.jackson.databind.JsonNode> recordData,
                                                     String nullIndicator)