org.apache.nifi.attribute.expression.language.evaluation.functions

Class JsonPathUpdateEvaluator

java.lang.Object

org.apache.nifi.attribute.expression.language.evaluation.StringEvaluator

org.apache.nifi.attribute.expression.language.evaluation.functions.JsonPathBaseEvaluator

org.apache.nifi.attribute.expression.language.evaluation.functions.JsonPathUpdateEvaluator

All Implemented Interfaces:

Evaluator<String>

Direct Known Subclasses:

JsonPathAddEvaluator, JsonPathPutEvaluator, JsonPathSetEvaluator

public abstract class JsonPathUpdateEvaluator
extends JsonPathBaseEvaluator

JsonPathUpdateEvaluator is base class for updating attributes Subclasses need to implement updateAttribute(com.jayway.jsonpath.DocumentContext, com.jayway.jsonpath.JsonPath, java.lang.Object) method otherwise it throws NotImplementedException

Field Summary

Fields

Modifier and Type	Field and Description
private static org.slf4j.Logger	LOGGER
protected Evaluator<?>	valueEvaluator

Fields inherited from class org.apache.nifi.attribute.expression.language.evaluation.functions.JsonPathBaseEvaluator

EMPTY_RESULT, JSON_PROVIDER, jsonPathExp, precompiledJsonPathExp, STRICT_PROVIDER_CONFIGURATION, subject

Constructor Summary

Constructors

Constructor and Description
JsonPathUpdateEvaluator(Evaluator<String> subject, Evaluator<String> jsonPathExp, Evaluator<?> valueEvaluator)

Method Summary

Modifier and Type	Method and Description
QueryResult<String>	evaluate(EvaluationContext context)
com.jayway.jsonpath.DocumentContext	updateAttribute(com.jayway.jsonpath.DocumentContext documentContext, com.jayway.jsonpath.JsonPath jsonPath, Object value) Update the attribute at the specified path.

Methods inherited from class org.apache.nifi.attribute.expression.language.evaluation.functions.JsonPathBaseEvaluator

compileJsonPathExpression, getDocumentContext, getJsonPath, getResultRepresentation, getSubjectEvaluator, isJsonScalar, validateAndEstablishJsonContext

Methods inherited from class org.apache.nifi.attribute.expression.language.evaluation.StringEvaluator

getEvaluationsRemaining, getResultType, getToken, setToken

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

private static final org.slf4j.Logger LOGGER

valueEvaluator

protected Evaluator<?> valueEvaluator

Constructor Detail

JsonPathUpdateEvaluator

public JsonPathUpdateEvaluator(Evaluator<String> subject,
                               Evaluator<String> jsonPathExp,
                               Evaluator<?> valueEvaluator)

Method Detail

evaluate

public QueryResult<String> evaluate(EvaluationContext context)

updateAttribute

public com.jayway.jsonpath.DocumentContext updateAttribute(com.jayway.jsonpath.DocumentContext documentContext,
                                                           com.jayway.jsonpath.JsonPath jsonPath,
                                                           Object value)

Update the attribute at the specified path. The subclasses will need to implement this method.

Parameters:

documentContext - the document to be updated

jsonPath - the path to update

value - the value to be applied at the specified path

Returns:

the updated DocumentContext

Throws:

org.apache.commons.lang3.NotImplementedException - if operation is not implemented