Package com.jayway.jsonpath.internal.function.text

Class Length

java.lang.Object

com.jayway.jsonpath.internal.function.text.Length

All Implemented Interfaces:

PathFunction

public class Length
extends Object
implements PathFunction

Provides the length of a JSONArray Object Created by mattg on 6/26/15.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	TOKEN_NAME

Constructor Summary

Constructors

Constructor	Description
Length()

Method Summary

Modifier and Type	Method	Description
Object	invoke(String currentPath, PathRef parent, Object model, EvaluationContext ctx, List<Parameter> parameters)	When we calculate the length of a path, what we're asking is given the node we land on how many children does it have.

Methods inherited from class java.lang.Object

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

Field Details

TOKEN_NAME

public static final String TOKEN_NAME

See Also:

• Constant Field Values

Constructor Details

Length

public Length()

Method Details

invoke

public Object invoke(String currentPath,
 PathRef parent,
 Object model,
 EvaluationContext ctx,
 List<Parameter> parameters)

When we calculate the length of a path, what we're asking is given the node we land on how many children does it have. Thus when we wrote the original query what we really wanted was $..book.length() or $.length($..book.*)

Specified by:

invoke in interface PathFunction

Parameters:

currentPath - The current path location inclusive of the function name

parent - The path location above the current function

model - The JSON model as input to this particular function

ctx - Eval context, state bag used as the path is traversed, maintains the result of executing

parameters -

Returns: