com.api.jsonata4java.expressions.utils

Class ArrayUtils

java.lang.Object

com.api.jsonata4java.expressions.utils.ArrayUtils

All Implemented Interfaces:

Serializable

public class ArrayUtils
extends Object
implements Serializable

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ArrayUtils()

Method Summary

Modifier and Type	Method and Description
static boolean	compare(com.fasterxml.jackson.databind.JsonNode left, com.fasterxml.jackson.databind.JsonNode right) Default comparison function for $sort
static com.fasterxml.jackson.databind.node.ArrayNode	ensureArray(com.fasterxml.jackson.databind.JsonNode n) If n is an array, it will be returned untouched.
static boolean	isArrayOfNumbers(com.fasterxml.jackson.databind.JsonNode arr) Determines if the supplied array contains all numeric values
static boolean	isArrayOfStrings(com.fasterxml.jackson.databind.JsonNode arr) Determines if the supplied array contains all String values
static com.fasterxml.jackson.databind.node.ArrayNode	push(com.fasterxml.jackson.databind.node.ArrayNode left, com.fasterxml.jackson.databind.JsonNode right) Merges the left, then the right array into the resulting array, preserving the element's order
static com.fasterxml.jackson.databind.node.ArrayNode	slice(com.fasterxml.jackson.databind.node.ArrayNode array, int start) Returns a shallow copy of the portion of the supplied array from start through the end of the array
static com.fasterxml.jackson.databind.node.ArrayNode	slice(com.fasterxml.jackson.databind.node.ArrayNode array, int start, int end) Returns a shallow copy of the portion of the supplied array from start to end (not including end)

Methods inherited from class java.lang.Object

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

Constructor Detail

ArrayUtils

public ArrayUtils()

Method Detail

isArrayOfNumbers

public static boolean isArrayOfNumbers(com.fasterxml.jackson.databind.JsonNode arr)

Determines if the supplied array contains all numeric values

Parameters:

arr - the array to be evaluated.

Returns:

true if the supplied array contains all numeric values. If arr is not an array, returns false.

isArrayOfStrings

public static boolean isArrayOfStrings(com.fasterxml.jackson.databind.JsonNode arr)

Determines if the supplied array contains all String values

Parameters:

arr - the array to be evaluated.

Returns:

true if the supplied array contains all String values. If arr is not an array, returns false.

compare

public static boolean compare(com.fasterxml.jackson.databind.JsonNode left,
                              com.fasterxml.jackson.databind.JsonNode right)
                       throws EvaluateRuntimeException

Default comparison function for $sort

Parameters:

left - string or number to be compared

right - string or number to be compared

Returns:

true is left is greater than right

Throws:

EvaluateRuntimeException - if left and right can not be converted to numbers

ensureArray

public static com.fasterxml.jackson.databind.node.ArrayNode ensureArray(com.fasterxml.jackson.databind.JsonNode n)

If n is an array, it will be returned untouched. Otherwise, return a singleton array containing the value

Parameters:

n - JsonNode being checked

Returns:

corresponding array made from the input n

push

public static com.fasterxml.jackson.databind.node.ArrayNode push(com.fasterxml.jackson.databind.node.ArrayNode left,
                                                                 com.fasterxml.jackson.databind.JsonNode right)

Merges the left, then the right array into the resulting array, preserving the element's order

Parameters:

left - first array to be merged

right - second array to be merged

Returns:

merged array containing the elements of left then the elements of right

slice

public static com.fasterxml.jackson.databind.node.ArrayNode slice(com.fasterxml.jackson.databind.node.ArrayNode array,
                                                                  int start,
                                                                  int end)

Returns a shallow copy of the portion of the supplied array from start to end (not including end)

Parameters:

array -

start -

end -

Returns:

a shallow copy of the portion of the supplied array from start to end (not including end)

slice

public static com.fasterxml.jackson.databind.node.ArrayNode slice(com.fasterxml.jackson.databind.node.ArrayNode array,
                                                                  int start)

Returns a shallow copy of the portion of the supplied array from start through the end of the array

Parameters:

array - input array to be sliced

start - starting index where the slice should occur

Returns:

a shallow copy of the portion of the supplied array from start through the end of the array