com.amazonaws.jmespath

Class JmesPathFunction

java.lang.Object

com.amazonaws.jmespath.JmesPathFunction

All Implemented Interfaces:

JmesPathExpression

Direct Known Subclasses:

JmesPathContainsFunction, JmesPathLengthFunction

public abstract class JmesPathFunction
extends Object
implements JmesPathExpression

Abstract class definition for function expressions that are used to transform and filter data in powerful ways.

Constructor Summary

Constructors

Constructor and Description
JmesPathFunction(List<JmesPathExpression> expressions)

Method Summary

Modifier and Type	Method and Description
<Input,Output> Output	accept(JmesPathVisitor<Input,Output> visitor, Input input) Delegates to either the CodeGen visitor(JmesPathFunction) or Evaluation visitor(JmesPathFunction) based on the type of JmesPath visitor
abstract com.fasterxml.jackson.databind.JsonNode	evaluate(List<com.fasterxml.jackson.databind.JsonNode> evaluatedArgs) Abstract method definition for evaluating the given list of expressions as per the given type of function
List<JmesPathExpression>	getExpressions()

Methods inherited from class java.lang.Object

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

Constructor Detail

JmesPathFunction

public JmesPathFunction(List<JmesPathExpression> expressions)

Method Detail

getExpressions

public List<JmesPathExpression> getExpressions()

accept

public <Input,Output> Output accept(JmesPathVisitor<Input,Output> visitor,
                                    Input input)
                             throws InvalidTypeException

Delegates to either the CodeGen visitor(JmesPathFunction) or Evaluation visitor(JmesPathFunction) based on the type of JmesPath visitor

Specified by:

accept in interface JmesPathExpression

Type Parameters:

Input - Input type for the visitor CodeGen visitor: Void Evaluation visitor: JsonNode

Output - Output type for the visitor CodeGen visitor: String Evaluation visitor: JsonNode

Parameters:

visitor - CodeGen visitor or Evaluation visitor

input - Input expression that needs to be evaluated

Returns:

Corresponding output is returned. Evaluated String in the case of CodeGen visitor or an evaluated JsonNode in the case of Evaluation visitor

Throws:

InvalidTypeException

evaluate

public abstract com.fasterxml.jackson.databind.JsonNode evaluate(List<com.fasterxml.jackson.databind.JsonNode> evaluatedArgs)

Abstract method definition for evaluating the given list of expressions as per the given type of function

Parameters:

evaluatedArgs - List of expressions to be evaluated

Returns:

Result of the evaluation of the corresponding function