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ArtefactEnhancer.groovy
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/
ArtefactEnhancer.groovy
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package grails.plugin.gson.api
import javax.servlet.http.HttpServletRequest
import com.google.gson.*
import grails.plugin.gson.adapters.GrailsDomainDeserializer
import grails.plugin.gson.converters.GSON
import groovy.util.logging.Slf4j
import org.codehaus.groovy.grails.commons.*
/**
* Adds GSON meta methods and properties to Grails artifacts.
*/
@Slf4j
class ArtefactEnhancer {
private final GrailsApplication grailsApplication
private final GrailsDomainDeserializer domainDeserializer
private final Gson gson
ArtefactEnhancer(GrailsApplication grailsApplication, GsonBuilder gsonBuilder, GrailsDomainDeserializer domainDeserializer) {
this.grailsApplication = grailsApplication
this.domainDeserializer = domainDeserializer
gson = gsonBuilder.create()
}
void enhanceControllers() {
for (controller in grailsApplication.controllerClasses) {
controller.metaClass.render = { GSON gson ->
gson.render delegate.response
}
}
}
void enhanceDomains() {
grailsApplication.domainClasses.each { GrailsDomainClass domainClass ->
domainClass.metaClass.constructor = { JsonObject json ->
gson.fromJson json, delegate
}
domainClass.metaClass.setProperties = { JsonObject json ->
domainDeserializer.bindJsonToInstance json, domainClass, delegate, gson.deserializationContext
}
}
}
void enhanceRequest() {
def requestMetaClass = GroovySystem.metaClassRegistry.getMetaClass(HttpServletRequest)
requestMetaClass.getGSON = {->
GSON.parse delegate
}
}
}