Append json into a json in groovy - json

Question

I am newbie to groovy. My requirement is i have to append a json into a json.My code as follows:
JSON constructed by me:
def builder = new groovy.json.JsonBuilder()
def root=builder.event{
type "model_output_load_init"
time new Timestamp(date.getTime())
status "success"
}
JSON from DB:
def json = rs.getString("status");
Now i have to append constructed into the JSON From DB. PLease help me to solve this.Thanks in advance.
EDIT:
My Constructed JSON:
{
"event": {
"type": "model_output_load_init",
"time": "2015-10-01T14:08:17+0000",
"status": "success"
}
}
JSON FROM DB:
{
"model_build": {
"Initialized": {
"Timestamp": ""
}
},
"modelExec": {
"Initialized": {
"Timestamp": ""
}
}
}
OUTPUT NEEDED:
{
"model_build": {
"Initialized": {
"Timestamp": ""
}
},
"modelExec": {
"Initialized": {
"Timestamp": ""
}
},
"event": {
"type": "model_output_load_init",
"time": "2015-10-01T14:08:17+0000",
"status": "success"
}
}

Answer 1

You can append to the Map generated by JsonSlurper.
import groovy.json.JsonBuilder
import groovy.json.JsonSlurper
def builder = new JsonBuilder()
def root = builder.event{
type "model_output_load_init"
time new Timestamp(date.getTime())
status "success"
}
// Simulates the JSON from DB
def json = new JsonSlurper().parseText('''
{
"model_build": {
"Initialized": {
"Timestamp": ""
}
},
"modelExec": {
"Initialized": {
"Timestamp": ""
}
}
}''')
// Append the built JSON to the "slurped" JSON
json.event = root.event
// Re-build the JSON so it can saved as a String
new JsonBuilder(json).toPrettyString()
The output looks like this:
{
"event": {
"type": "model_output_load_init",
"time": "2015-10-01T14:39:11+0000",
"status": "success"
},
"modelExec": {
"Initialized": {
"Timestamp": ""
}
},
"model_build": {
"Initialized": {
"Timestamp": ""
}
}
}