Package com.networknt.schema

Class CollectorContext

java.lang.Object

com.networknt.schema.CollectorContext

public class CollectorContext
extends Object

Context for holding data which can be set by custom walkers or validators and can be retrieved later from the execution context.

Constructor Summary

Constructors

Constructor	Description
CollectorContext()	Default constructor will use an unsynchronized HashMap to store data.
CollectorContext(Map<Object,Object> data)	Constructor that creates the context using the specified instances to store data.

Method Summary

Modifier and Type	Method	Description
<T> T	computeIfAbsent(Object key, Function<Object,Object> mappingFunction)	Computes the value if absent.
<T> T	get(Object key)	Gets the data associated with a given key.
Map<Object,Object>	getData()	Gets the data map.
<T> T	put(Object key, Object value)	Sets data associated with a given key.

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectorContext

public CollectorContext()

Default constructor will use an unsynchronized HashMap to store data. This is suitable if the collector context is not shared with multiple threads.

CollectorContext

public CollectorContext(Map<Object,Object> data)

Constructor that creates the context using the specified instances to store data.

If for instance the collector context needs to be shared with multiple threads a ConcurrentHashMap can be used.

It is however more likely that the data will only be used after the walk or validation is complete rather then during processing.

Parameters:

data - the data map

Method Detail

put

public <T> T put(Object key,
                 Object value)

Sets data associated with a given key.

Type Parameters:

T - the return type

Parameters:

key - the key

value - the value

Returns:

the previous value

get

public <T> T get(Object key)

Gets the data associated with a given key.

Type Parameters:

T - the return type

Parameters:

key - the key

Returns:

the value

computeIfAbsent

public <T> T computeIfAbsent(Object key,
                             Function<Object,Object> mappingFunction)

Computes the value if absent.

Type Parameters:

T - the return type

Parameters:

key - the key

mappingFunction - the mapping function

Returns:

the value

getData

public Map<Object,Object> getData()

Gets the data map.

Returns:

the data map