Package org.apache.druid.segment.nested

Class NestedPathFinder

java.lang.Object

org.apache.druid.segment.nested.NestedPathFinder

public class NestedPathFinder
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final String	JQ_PATH_ROOT
static final String	JSON_PATH_ROOT

Constructor Summary

Constructors

Constructor	Description
NestedPathFinder()

Method Summary

Modifier and Type	Method	Description
static Object	find(Object data, List<NestedPathPart> path)	Dig through a thing to find stuff
static Object[]	findKeys(Object data, List<NestedPathPart> path)	find the list of 'keys' at some path.
static List<NestedPathPart>	parseJqPath(String path)	split a jq path into a series of extractors to find things in stuff
static List<NestedPathPart>	parseJsonPath(String path)	split a JSONPath path into a series of extractors to find things in stuff
static String	toNormalizedJqPath(List<NestedPathPart> paths)	Given a list of part finders, convert it to a "normalized" 'jq' path format that is consistent with how StructuredDataProcessor constructs field path names
static String	toNormalizedJsonPath(List<NestedPathPart> paths)

Methods inherited from class java.lang.Object

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

Field Details

JSON_PATH_ROOT

public static final String JSON_PATH_ROOT

See Also:

• Constant Field Values

JQ_PATH_ROOT

public static final String JQ_PATH_ROOT

See Also:

• Constant Field Values

Constructor Details

NestedPathFinder

public NestedPathFinder()

Method Details

find

@Nullable
public static Object find(@Nullable
 Object data,
 List<NestedPathPart> path)

Dig through a thing to find stuff

findKeys

@Nullable
public static Object[] findKeys(@Nullable
 Object data,
 List<NestedPathPart> path)

find the list of 'keys' at some path. - if the thing at a path is an object (map), return the fields - if the thing at a path is an array (list or array), return the 0 based element numbers - if the thing is a simple value, return null

toNormalizedJsonPath

public static String toNormalizedJsonPath(List<NestedPathPart> paths)

parseJsonPath

public static List<NestedPathPart> parseJsonPath(@Nullable
 String path)

split a JSONPath path into a series of extractors to find things in stuff

toNormalizedJqPath

public static String toNormalizedJqPath(List<NestedPathPart> paths)

Given a list of part finders, convert it to a "normalized" 'jq' path format that is consistent with how StructuredDataProcessor constructs field path names

parseJqPath

public static List<NestedPathPart> parseJqPath(@Nullable
 String path)

split a jq path into a series of extractors to find things in stuff