nl.b3p.viewer.util

Class FeatureToJson

java.lang.Object

nl.b3p.viewer.util.FeatureToJson

public class FeatureToJson
extends Object

Author:

Roy Braam

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX_FEATURES

Constructor Summary

Constructors

Constructor and Description
FeatureToJson(boolean arrays, boolean edit)
FeatureToJson(boolean arrays, boolean edit, boolean graph, boolean aliases, boolean returnNullval, List<Long> attributesToInclude)
FeatureToJson(boolean arrays, boolean edit, boolean graph, boolean aliases, boolean returnNullval, List<Long> attributesToInclude, boolean ordered)
FeatureToJson(boolean arrays, boolean edit, boolean graph, boolean aliases, List<Long> attributesToInclude)
FeatureToJson(boolean arrays, boolean edit, boolean graph, List<Long> attributesToInclude)

Method Summary

Modifier and Type	Method and Description
org.json.JSONArray	getJSONFeatures(ApplicationLayer al, SimpleFeatureType ft, org.geotools.data.FeatureSource fs, org.geotools.data.Query q, javax.persistence.EntityManager em, Application application, javax.servlet.http.HttpServletRequest request) Get the features, unsorted, as JSONArray with the given params.
org.json.JSONArray	getJSONFeatures(ApplicationLayer al, SimpleFeatureType ft, org.geotools.data.FeatureSource fs, org.geotools.data.Query q, String sort, String dir, javax.persistence.EntityManager em, Application application, javax.servlet.http.HttpServletRequest request) Get the features, optionally sorted, as JSONArray with the given params.
static org.opengis.filter.Filter	reformatFilter(org.opengis.filter.Filter filter, SimpleFeatureType ft) Optimze and reformat filter.
static org.opengis.filter.Filter	reformatFilter(org.opengis.filter.Filter filter, SimpleFeatureType ft, boolean includeRelations) Optimze and reformat filter.

Methods inherited from class java.lang.Object

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

Field Detail

MAX_FEATURES

public static final int MAX_FEATURES

See Also:

Constant Field Values

Constructor Detail

FeatureToJson

public FeatureToJson(boolean arrays,
                     boolean edit)

FeatureToJson

public FeatureToJson(boolean arrays,
                     boolean edit,
                     boolean graph,
                     List<Long> attributesToInclude)

FeatureToJson

public FeatureToJson(boolean arrays,
                     boolean edit,
                     boolean graph,
                     boolean aliases,
                     List<Long> attributesToInclude)

FeatureToJson

public FeatureToJson(boolean arrays,
                     boolean edit,
                     boolean graph,
                     boolean aliases,
                     boolean returnNullval,
                     List<Long> attributesToInclude)

FeatureToJson

public FeatureToJson(boolean arrays,
                     boolean edit,
                     boolean graph,
                     boolean aliases,
                     boolean returnNullval,
                     List<Long> attributesToInclude,
                     boolean ordered)

Parameters:

arrays - true when???

edit - true to return editable data

graph - true when??

aliases - true to return aliases in the response

returnNullval - true to return empty string for null value

attributesToInclude - List of attributes to return in the response

ordered - true to return an JSONArray with attributes per feature instead of JSONObject to maintain order of attributes

Method Detail

getJSONFeatures

public org.json.JSONArray getJSONFeatures(ApplicationLayer al,
                                          SimpleFeatureType ft,
                                          org.geotools.data.FeatureSource fs,
                                          org.geotools.data.Query q,
                                          javax.persistence.EntityManager em,
                                          Application application,
                                          javax.servlet.http.HttpServletRequest request)
                                   throws IOException,
                                          org.json.JSONException,
                                          Exception

Get the features, unsorted, as JSONArray with the given params.

Parameters:

al - The application layer(if there is a application layer)

ft - The featuretype that must be used to get the features

fs - The featureSource

q - The query

em - The entitymanager of the session, for retrieving uploads

application - The application from which this request originates

request - The current request to look if the user has rights to view the uploads

Returns:

JSONArray with features.

Throws:

IOException - if any

org.json.JSONException - if transforming to json fails

Exception - if any

See Also:

getJSONFeatures(nl.b3p.viewer.config.app.ApplicationLayer, nl.b3p.viewer.config.services.SimpleFeatureType, org.geotools.data.FeatureSource, org.geotools.data.Query, java.lang.String, java.lang.String, javax.persistence.EntityManager, Application, HttpServletRequest)

getJSONFeatures

public org.json.JSONArray getJSONFeatures(ApplicationLayer al,
                                          SimpleFeatureType ft,
                                          org.geotools.data.FeatureSource fs,
                                          org.geotools.data.Query q,
                                          String sort,
                                          String dir,
                                          javax.persistence.EntityManager em,
                                          Application application,
                                          javax.servlet.http.HttpServletRequest request)
                                   throws IOException,
                                          org.json.JSONException,
                                          Exception

Get the features, optionally sorted, as JSONArray with the given params. Note that the FeatureSource fs will be closed and disposed.

Parameters:

al - The application layer(if there is a application layer)

ft - The featuretype that must be used to get the features

fs - The featureSource

q - The query

sort - The attribute name that is used to sort

dir - Sort direction (DESC or ASC)

Returns:

JSONArray with features.

Throws:

IOException - if any

org.json.JSONException - if transforming to json fails

Exception - if any

reformatFilter

public static org.opengis.filter.Filter reformatFilter(org.opengis.filter.Filter filter,
                                                       SimpleFeatureType ft)
                                                throws Exception

Optimze and reformat filter. Delegates to reformatFilter(org.opengis.filter.Filter, nl.b3p.viewer.config.services.SimpleFeatureType, boolean) with the includeRelations set to true.

Parameters:

filter - the filter to process

ft - featuretype to apply filter

Returns:

reformatted / optimised filter

Throws:

Exception - if any

See Also:

reformatFilter(org.opengis.filter.Filter, nl.b3p.viewer.config.services.SimpleFeatureType, boolean)

reformatFilter

public static org.opengis.filter.Filter reformatFilter(org.opengis.filter.Filter filter,
                                                       SimpleFeatureType ft,
                                                       boolean includeRelations)
                                                throws Exception

Optimze and reformat filter.

Parameters:

filter - the filter to process

ft - featuretype to apply filter

includeRelations - whether to include related (joined) data

Returns:

reformatted / optimised filter

Throws:

Exception - if any