%dw 2.0
input payload json
output application/java
---
payload

%dw 2.0
output application/dw
---
payload

• countBy Counts the elements in an array that return true when the matching function is applied to the value of each element.
• divideBy Breaks up an array into sub-arrays that contain the specified number of elements.
• drop Drops the first n elements. It returns the original array when n ⇐ 0 and an empty array when n > sizeOf(array).
• dropWhile Drops elements from the array while the condition is met but stops the selection process when it reaches an element that fails to satisfy the condition.
• every Returns true if every element in the array matches the condition.
• firstWith Returns the first element that satisfies the condition, or returns null if no element meets the condition.
• indexOf Returns the index of the first occurrence of an element within the array. If the value is not found, the function returns -1.
• indexWhere Returns the index of the first occurrence of an element that matches a condition within the array. If no element matches the condition, the function returns -1.
• join Joins two arrays of objects by a given ID criteria.
• leftJoin Joins two arrays of objects by a given ID criteria.
• outerJoin Joins two array of objects by a given ID criteria.
• partition Separates the array into the elements that satisfy the condition from those that do not.
• slice Selects the interval of elements that satisfy the condition: from ⇐ indexOf(array) < until
• some Returns true if at least one element in the array matches the specified condition.
• splitAt Splits an array into two at a given position.
• splitWhere Splits an array into two at the first position where the condition is met.
• sumBy Returns the sum of the values of the elements in an array.
• take Selects the first n elements. It returns an empty array when n ⇐ 0 and the original array when n > sizeOf(array).
• takeWhile Selects elements from the array while the condition is met but stops the selection process when it reaches an element that fails to satisfy the condition.

• divideBy Breaks up an object into sub-objects that contain the specified number of key-value pairs.
• entrySet Returns an array of key-value pairs that describe the key, value, and any attributes in the input object.
• everyEntry Returns true if every entry in the object matches the condition.
• keySet Returns an array of key names from an object.
• mergeWith Appends any key-value pairs from a source object to a target object.
• nameSet Returns an array of keys from an object.
• someEntry Returns true if at least one entry in the object matches the specified condition.
• takeWhile Selects key-value pairs from the object while the condition is met.
• valueSet Returns an array of the values from key-value pairs in an object.

• https://docs.mulesoft.com/dataweave/latest/