
public class CollectionUtil

Nested Classes
Modifier and Type	Class	Description

Fields
Modifier and Type	Field	Description
`public final static CollectionUtil`	`INSTANCE`

Constructors
Constructor	Description

Enum Constants
Enum Constant	Description

Modifier and Type Method Description

final Map<String, Object> flatten(Map<String, Object> data) Converts nested maps and collections in the given parameter to composite string keys.

final Map<String, Object>

unflatten(Map<String, ?> input)

Reverse operation to flatten, example:

input:
mapOf(
  "data.key1" to "value1",
  "data.key2[0]" to "value2",
  "data.key2[1]" to "value3",
)

output:
mapOf(
  "data" to mapOf(
    "key1" to "value1",
    "key2" to listOf("value2", "value3")
  )
)

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 final Map<String, Object> flatten(Map<String, Object> data)

Converts nested maps and collections in the given parameter to composite string keys.

Example:

input:
mapOf(
  "data" to mapOf(
    "key1" to "value1",
    "key2" to listOf("value2", "value3")
  )
)

output:
mapOf(
  "data.key1" to "value1",
  "data.key2[0]" to "value2",
  "data.key2[1]" to "value3",
)

 final Map<String, Object> unflatten(Map<String, ?> input)

Reverse operation to flatten, example:

input:
mapOf(
  "data.key1" to "value1",
  "data.key2[0]" to "value2",
  "data.key2[1]" to "value3",
)

output:
mapOf(
  "data" to mapOf(
    "key1" to "value1",
    "key2" to listOf("value2", "value3")
  )
)

Object CollectionUtil