com.neurosys.template.wicket.itemadapters

Class JSONRenderAdapter

java.lang.Object

com.neurosys.template.wicket.itemadapters.CustomItemComponentRenderAdapter

com.neurosys.template.wicket.itemadapters.MapRenderAdapter<net.sf.json.JSONObject>

com.neurosys.template.wicket.itemadapters.JSONRenderAdapter

All Implemented Interfaces:

Serializable

public class JSONRenderAdapter
extends MapRenderAdapter<net.sf.json.JSONObject>

Convenient JSON implementation for MapRenderAdapter

Author:

Arjun Dhar

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.neurosys.template.wicket.itemadapters.CustomItemComponentRenderAdapter

CustomItemComponentRenderAdapter.ContextualTwoWayTransformer

Field Summary

Fields inherited from class com.neurosys.template.wicket.itemadapters.MapRenderAdapter

entityTemplate

Fields inherited from class com.neurosys.template.wicket.itemadapters.CustomItemComponentRenderAdapter

authorizationModule, modelTransformer

Constructor Summary

Constructors

Constructor and Description
JSONRenderAdapter() Initializes CustomItemComponentRenderAdapter.setModelTransformer(Transformer)
JSONRenderAdapter(JSONRenderAdapter t)

Method Summary

Modifier and Type	Method and Description
org.apache.wicket.Component	getComponent(String componentId, MetaItem metaItem, org.apache.wicket.model.IModel defaultInputModel, Object modelObject, User user) Some fields/attribute may require display of options for selection or Auto-Suggest etc..
protected net.sf.json.JSONObject	getMapInstance()
protected void	init()
boolean	isMerge() If true it will Scan the entity object for existing changes in data model and merge the current field JSON with that. JSON tends to be fluid with multiple attributes being re-used across or littered across form.
void	setMerge(boolean merge) If true it will Scan the entity object for existing changes in data model and merge the current field JSON with that. JSON tends to be fluid with multiple attributes being re-used across or littered across form.

Methods inherited from class com.neurosys.template.wicket.itemadapters.MapRenderAdapter

getEntityTemplate, populateItem, setEntityTemplate

Methods inherited from class com.neurosys.template.wicket.itemadapters.CustomItemComponentRenderAdapter

filter, getDataList, getLookup, getModelTransformer, markComponentReadOnly, processSubmit, setModelTransformer, translateCurrentSelectionModel

Methods inherited from class java.lang.Object

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

Constructor Detail

JSONRenderAdapter

public JSONRenderAdapter()

Initializes CustomItemComponentRenderAdapter.setModelTransformer(Transformer)

JSONRenderAdapter

public JSONRenderAdapter(JSONRenderAdapter t)

Method Detail

init

protected void init()

getComponent

public org.apache.wicket.Component getComponent(String componentId,
                                                MetaItem metaItem,
                                                org.apache.wicket.model.IModel defaultInputModel,
                                                Object modelObject,
                                                User user)

Description copied from class: MapRenderAdapter

Some fields/attribute may require display of options for selection or Auto-Suggest etc..

Providing rendering option for lookup for that field/attribute. The base class returns a Hidden field, which can be overriden by any derived adapter.
If no mapping exists, then null will be returned.
Base class implementation returns HiddenField Expect the modelObject as JSONObject and make a ListView of all the key, value pairs.

Overrides:

getComponent in class MapRenderAdapter<net.sf.json.JSONObject>

Parameters:

componentId - as Sting id for the Component

metaItem - as MetaItem meta data for rendering logic

defaultInputModel - is the current data defined in a IModel for the MetaItem. The resultant model in the returned Component may NOT be same as the one passed to the inner component, hence always use the derived one. This is because there maybe a mismatch in the form of core/raw data and one required for final presentation. For example the input maybe a Comma Separated list of Strings, however for presentation in a List box we may convert the Model to a ListModel.

modelObject - as Object, that represents the main Entity (overall context)

user - as com.neurosys.security.auth.domain.User for any Authorization related needs @nullable true

Returns:

Component @nullable true

getMapInstance

protected net.sf.json.JSONObject getMapInstance()

Overrides:

getMapInstance in class MapRenderAdapter<net.sf.json.JSONObject>

isMerge

public boolean isMerge()

If true it will Scan the entity object for existing changes in data model and merge the current field JSON with that.
JSON tends to be fluid with multiple attributes being re-used across or littered across form. Merge mode can helps in merging multiple fields of input
entity state : This is the state of the JSON in the entity, for the data-field in the entity. Example: product.field_json_of_urls
field state : Each field represented in the UI gets a complete copy of the JSON (entity state), however since the field is being modified, the attributes may differ. On Update the field state can complete override the entity state of a previous update.
To prevent that, merge allows each field to only influence the attributes within the JSON that it influences.

Default value:

false : optimal

setMerge

public void setMerge(boolean merge)

If true it will Scan the entity object for existing changes in data model and merge the current field JSON with that.
JSON tends to be fluid with multiple attributes being re-used across or littered across form. Merge mode can helps in merging multiple fields of input
entity state : This is the state of the JSON in the entity, for the data-field in the entity. Example: product.field_json_of_urls
field state : Each field represented in the UI gets a complete copy of the JSON (entity state), however since the field is being modified, the attributes may differ. On Update the field state can complete override the entity state of a previous update.
To prevent that, merge allows each field to only influence the attributes within the JSON that it influences.

Default value:

false : optimal