io.apptik.json.wrapper

Class JsonElementWrapper<T extends io.apptik.json.JsonElement>

java.lang.Object

io.apptik.json.wrapper.JsonElementWrapper<T>

All Implemented Interfaces:

io.apptik.json.ElementWrapper, java.io.Serializable

Direct Known Subclasses:

JsonObjectWrapper, TypedJsonArray

public abstract class JsonElementWrapper<T extends io.apptik.json.JsonElement>
extends java.lang.Object
implements io.apptik.json.ElementWrapper

Json element Wrapper to be used to wrap JSON data with its schema content type used to describe the data.

It can be extended to define a data model implementing getters and setters for required members.

The idea is that there is no need to instantiate different POJO for different purpose on the same JSON data, but just wrap that data.

Compared to pure POJO mapping it is particularly useful when single JSON representation can be mapped to 2 or more POJOs. For example if we get data about https://schema.org/LocalBusiness which is https://schema.org/Organization and https://schema.org/Place at the same time we need to reference Place and Organization POJOs in the LocalBusiness POJO as in java we cannot extend from 2 classes. This means that for any possible combination of DataTypes available for the Resources we get we need to create POJOs to delegate to others.

Using Json wrappers is fairly simple as we can just create wrappers implementing interfaces specific to the type we need to work with, while full json data itself is still available to be wrapped again for other needs.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected T	json

Constructor Summary

Constructors

Constructor and Description
JsonElementWrapper()
JsonElementWrapper(T jsonElement)
JsonElementWrapper(T jsonElement, java.lang.String contentType)
JsonElementWrapper(T jsonElement, java.lang.String contentType, java.net.URI metaInfo)

Method Summary

Modifier and Type	Method and Description
JsonElementWrapper	addSchemaFetcher(java.lang.String name, MetaInfoFetcher fetcher)
JsonElementWrapper	addValidator(io.apptik.json.Validator validator)
MetaInfo	fetchMetaInfo()
java.lang.String	getContentType()
MetaInfoFetcher	getDefaultSchemaFetcher()
T	getJson()
java.net.URI	getJsonSchemaUri()
MetaInfo	getMetaInfo()
java.util.LinkedHashSet<io.apptik.json.Validator>	getValidators()
boolean	isDataValid()
JsonElementWrapper	setContentType(java.lang.String contentType)
JsonElementWrapper	setDefaultSchemaFetcher(MetaInfoFetcher fetcher)
JsonElementWrapper	setMetaInfo(MetaInfo metaInfo)
JsonElementWrapper	setMetaInfoUri(java.net.URI uri)
JsonElementWrapper	setSchemaFetchers(java.util.Map<java.lang.String,MetaInfoFetcher> newFetchers)
java.lang.String	toString()
boolean	validateData(java.lang.StringBuilder sb)
<J extends JsonElementWrapper> J	wrap(T jsonElement)

Methods inherited from class java.lang.Object

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

Field Detail

json

protected transient T extends io.apptik.json.JsonElement json

Constructor Detail

JsonElementWrapper

public JsonElementWrapper()

JsonElementWrapper

public JsonElementWrapper(T jsonElement)

JsonElementWrapper

public JsonElementWrapper(T jsonElement,
                          java.lang.String contentType)

JsonElementWrapper

public JsonElementWrapper(T jsonElement,
                          java.lang.String contentType,
                          java.net.URI metaInfo)

Method Detail

getJson

public T getJson()

Specified by:

getJson in interface io.apptik.json.ElementWrapper

getContentType

public java.lang.String getContentType()

getJsonSchemaUri

public java.net.URI getJsonSchemaUri()

getMetaInfo

public MetaInfo getMetaInfo()

wrap

public <J extends JsonElementWrapper> J wrap(T jsonElement)

setContentType

public JsonElementWrapper setContentType(java.lang.String contentType)

setMetaInfoUri

public JsonElementWrapper setMetaInfoUri(java.net.URI uri)

setMetaInfo

public JsonElementWrapper setMetaInfo(MetaInfo metaInfo)

addSchemaFetcher

public JsonElementWrapper addSchemaFetcher(java.lang.String name,
                                           MetaInfoFetcher fetcher)

getDefaultSchemaFetcher

public MetaInfoFetcher getDefaultSchemaFetcher()

setDefaultSchemaFetcher

public JsonElementWrapper setDefaultSchemaFetcher(MetaInfoFetcher fetcher)

setSchemaFetchers

public JsonElementWrapper setSchemaFetchers(java.util.Map<java.lang.String,MetaInfoFetcher> newFetchers)

addValidator

public JsonElementWrapper addValidator(io.apptik.json.Validator validator)

getValidators

public java.util.LinkedHashSet<io.apptik.json.Validator> getValidators()

isDataValid

public boolean isDataValid()

validateData

public boolean validateData(java.lang.StringBuilder sb)

fetchMetaInfo

public MetaInfo fetchMetaInfo()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object