Class AutoExpandArrayTraversalStep<DataType>

java.lang.Object

com.bazaarvoice.jolt.traversr.traversal.BaseTraversalStep<List<Object>, DataType>

com.bazaarvoice.jolt.traversr.traversal.ArrayTraversalStep<DataType>

com.bazaarvoice.jolt.traversr.traversal.AutoExpandArrayTraversalStep<DataType>

All Implemented Interfaces:

TraversalStep<List<Object>, DataType>

public class AutoExpandArrayTraversalStep<DataType>
extends ArrayTraversalStep<DataType>

Subclass of ArrayTraversalStep that does not care about array index numbers. Instead it will just do an array add on any set. Consequently, get and remove are rather meaningless. This exists, because we need a way in the human readable path, so say that we always want a list value. Example : "tuna.marlin.[]" We want the value of marlin to always be a list, and anytime we set data to marlin, it should just be added to the list.

Nested Class Summary

Nested classes/interfaces inherited from interface TraversalStep

TraversalStep.Operation

Field Summary

Fields inherited from class BaseTraversalStep

child, traversr

Constructor Summary

Constructors

Constructor	Description
AutoExpandArrayTraversalStep(Traversr traversr, TraversalStep child)

Method Summary

Modifier and Type	Method	Description
Optional<DataType>	get(List<Object> list, String key)	Return the data for the key from the provided tree object.
Optional<DataType>	overwriteSet(List<Object> list, String key, DataType data)	Insert the data into the tree, overwriting any data that is there.
Optional<DataType>	remove(List<Object> list, String key)	Remove and return the data for the key from the provided tree object.

Methods inherited from class ArrayTraversalStep

getStepType, newContainer

Methods inherited from class BaseTraversalStep

getChild, traverse

Methods inherited from class Object

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

Constructor Details

AutoExpandArrayTraversalStep

public AutoExpandArrayTraversalStep(Traversr traversr,
 TraversalStep child)

Method Details

get

public Optional<DataType> get(List<Object> list,
 String key)

Description copied from interface: TraversalStep

Return the data for the key from the provided tree object.

Specified by:

get in interface TraversalStep<List<Object>, DataType>

Overrides:

get in class ArrayTraversalStep<DataType>

Returns:

data object if available, or null.

remove

public Optional<DataType> remove(List<Object> list,
 String key)

Description copied from interface: TraversalStep

Remove and return the data for the key from the provided tree object.

Specified by:

remove in interface TraversalStep<List<Object>, DataType>

Overrides:

remove in class ArrayTraversalStep<DataType>

Returns:

data object if available, or null.

overwriteSet

public Optional<DataType> overwriteSet(List<Object> list,
 String key,
 DataType data)

Description copied from interface: TraversalStep

Insert the data into the tree, overwriting any data that is there.

Specified by:

overwriteSet in interface TraversalStep<List<Object>, DataType>

Overrides:

overwriteSet in class ArrayTraversalStep<DataType>

Returns:

returns the data object if successful or null if it could not