
public class CollectionUtil

Nested Classes
Modifier and Type	Class	Description
`public interface`	`CollectionUtil.Data`

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") ) )`
`final Iterator<Object>`	`maybeGetIterator(Object collectionOrArray)`
`final Iterator<Object>`	`getArrayIterator(Object array)`

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")
  )
)

 final Iterator<Object> maybeGetIterator(Object collectionOrArray)

 final Iterator<Object> getArrayIterator(Object array)

Object CollectionUtil