Package org.apache.druid.segment.nested

Class StructuredDataProcessor

java.lang.Object

org.apache.druid.segment.nested.StructuredDataProcessor

public abstract class StructuredDataProcessor
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	StructuredDataProcessor.ProcessedValue<T>
static class	StructuredDataProcessor.ProcessResults	Accumulates the list of literal field paths and a rough size estimation for StructuredDataProcessor

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	StructuredDataProcessor()

Method Summary

Modifier and Type	Method	Description
static int	estimateStringSize(String value)	this is copied from StringDimensionDictionary.estimateSizeOfValue(String)
static int	getDoubleObjectEstimateSize()
static int	getLongObjectEstimateSize()
abstract StructuredDataProcessor.ProcessedValue<?>	processArrayField(ArrayList<NestedPathPart> fieldPath, List<?> array)	Process a List or Object returning a StructuredDataProcessor.ProcessedValue if no further processing should be performed by the StructuredDataProcessor, else a return value of null indicates that each element of the array will be processed separately as a new NestedPathArrayElement part.
abstract StructuredDataProcessor.ProcessedValue<?>	processField(ArrayList<NestedPathPart> fieldPath, Object fieldValue)	process a value that is definitely not a Map, List, or Object
StructuredDataProcessor.ProcessResults	processFields(Object raw)	Process some object, traversing any nested structure and returning a list of all paths which created a StructuredDataProcessor.ProcessedValue during processing, represented as an ordered sequence of NestedPathPart.

Methods inherited from class java.lang.Object

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

Constructor Detail

StructuredDataProcessor

protected StructuredDataProcessor()

Method Detail

processField

public abstract StructuredDataProcessor.ProcessedValue<?> processField(ArrayList<NestedPathPart> fieldPath,
                                                                       @Nullable
                                                                       Object fieldValue)

process a value that is definitely not a Map, List, or Object

processArrayField

@Nullable
public abstract StructuredDataProcessor.ProcessedValue<?> processArrayField(ArrayList<NestedPathPart> fieldPath,
                                                                            @Nullable
                                                                            List<?> array)

Process a List or Object returning a StructuredDataProcessor.ProcessedValue if no further processing should be performed by the StructuredDataProcessor, else a return value of null indicates that each element of the array will be processed separately as a new NestedPathArrayElement part.

processFields

public StructuredDataProcessor.ProcessResults processFields(Object raw)

Process some object, traversing any nested structure and returning a list of all paths which created a StructuredDataProcessor.ProcessedValue during processing, represented as an ordered sequence of NestedPathPart. This method processes plain java objects, for each Map it adds a StructuredDataProcessor.MapField to the path, for List a StructuredDataProcessor.ArrayField, Object a StructuredDataProcessor.ArrayField, and so on. StructuredDataProcessor.ArrayField and StructuredDataProcessor.ArrayField will be processed by processArrayField(ArrayList, List)

estimateStringSize

public static int estimateStringSize(@Nullable
                                     String value)

this is copied from StringDimensionDictionary.estimateSizeOfValue(String)

getLongObjectEstimateSize

public static int getLongObjectEstimateSize()

getDoubleObjectEstimateSize

public static int getDoubleObjectEstimateSize()