org.apache.nifi.processors.standard

Class AbstractJsonPathProcessor

java.lang.Object

org.apache.nifi.components.AbstractConfigurableComponent

org.apache.nifi.processor.AbstractSessionFactoryProcessor

org.apache.nifi.processor.AbstractProcessor

org.apache.nifi.processors.standard.AbstractJsonPathProcessor

All Implemented Interfaces:

ConfigurableComponent, Processor

Direct Known Subclasses:

EvaluateJsonPath, SplitJson

public abstract class AbstractJsonPathProcessor
extends AbstractProcessor

Provides common functionality used for processors interacting and manipulating JSON data via JsonPath.

See Also:

http://json.org, https://github.com/jayway/JsonPath

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static class	AbstractJsonPathProcessor.JsonPathValidator

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static String	EMPTY_STRING_OPTION
private static com.jayway.jsonpath.spi.json.JsonProvider	JSON_PROVIDER
(package private) static Map<String,String>	NULL_REPRESENTATION_MAP
(package private) static String	NULL_STRING_OPTION
static PropertyDescriptor	NULL_VALUE_DEFAULT_REPRESENTATION
private static com.jayway.jsonpath.Configuration	STRICT_PROVIDER_CONFIGURATION

Constructor Summary

Constructors

Constructor and Description
AbstractJsonPathProcessor()

Method Summary

Modifier and Type	Method and Description
(package private) static String	getResultRepresentation(Object jsonPathResult, String defaultValue)
(package private) static boolean	isJsonScalar(Object obj) Determines the context by which JsonSmartJsonProvider would treat the value.
(package private) static com.jayway.jsonpath.DocumentContext	validateAndEstablishJsonContext(ProcessSession processSession, FlowFile flowFile)

Methods inherited from class org.apache.nifi.processor.AbstractProcessor

onTrigger, onTrigger

Methods inherited from class org.apache.nifi.processor.AbstractSessionFactoryProcessor

getControllerServiceLookup, getIdentifier, getLogger, getNodeTypeProvider, getRelationships, init, initialize, isConfigurationRestored, isScheduled, toString, updateConfiguredRestoredTrue, updateScheduledFalse, updateScheduledTrue

Methods inherited from class org.apache.nifi.components.AbstractConfigurableComponent

customValidate, equals, getPropertyDescriptor, getPropertyDescriptors, getSupportedDynamicPropertyDescriptor, getSupportedPropertyDescriptors, hashCode, onPropertyModified, validate

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.nifi.processor.Processor

isStateful

Methods inherited from interface org.apache.nifi.components.ConfigurableComponent

getPropertyDescriptor, getPropertyDescriptors, onPropertyModified, validate

Field Detail

STRICT_PROVIDER_CONFIGURATION

private static final com.jayway.jsonpath.Configuration STRICT_PROVIDER_CONFIGURATION

JSON_PROVIDER

private static final com.jayway.jsonpath.spi.json.JsonProvider JSON_PROVIDER

NULL_REPRESENTATION_MAP

static final Map<String,String> NULL_REPRESENTATION_MAP

EMPTY_STRING_OPTION

static final String EMPTY_STRING_OPTION

See Also:

Constant Field Values

NULL_STRING_OPTION

static final String NULL_STRING_OPTION

See Also:

Constant Field Values

NULL_VALUE_DEFAULT_REPRESENTATION

public static final PropertyDescriptor NULL_VALUE_DEFAULT_REPRESENTATION

Constructor Detail

AbstractJsonPathProcessor

public AbstractJsonPathProcessor()

Method Detail

validateAndEstablishJsonContext

static com.jayway.jsonpath.DocumentContext validateAndEstablishJsonContext(ProcessSession processSession,
                                                                           FlowFile flowFile)

isJsonScalar

static boolean isJsonScalar(Object obj)

Determines the context by which JsonSmartJsonProvider would treat the value. Map and List objects can be rendered as JSON elements, everything else is treated as a scalar.

Parameters:

obj - item to be inspected if it is a scalar or a JSON element

Returns:

false, if the object is a supported type; true otherwise

getResultRepresentation

static String getResultRepresentation(Object jsonPathResult,
                                      String defaultValue)