Question

I want to get data from thisarray of json object :

[
    {
        "outgoing_relationships": "http://myserver:7474/db/data/node/4/relationships/out",
        "data": {
            "family": "3",
            "batch": "/var/www/utils/batches/d32740d8-b4ad-49c7-8ec8-0d54fcb7d239.resync",
            "name": "rahul",
            "command": "add",
            "type": "document"
        },
        "traverse": "http://myserver:7474/db/data/node/4/traverse/{returnType}",
        "all_typed_relationships": "http://myserver:7474/db/data/node/4/relationships/all/{-list|&|types}",
        "property": "http://myserver:7474/db/data/node/4/properties/{key}",
        "self": "http://myserver:7474/db/data/node/4",
        "properties": "http://myserver:7474/db/data/node/4/properties",
        "outgoing_typed_relationships": "http://myserver:7474/db/data/node/4/relationships/out/{-list|&|types}",
        "incoming_relationships": "http://myserver:7474/db/data/node/4/relationships/in",
        "extensions": {},
        "create_relationship": "http://myserver:7474/db/data/node/4/relationships",
        "paged_traverse": "http://myserver:7474/db/data/node/4/paged/traverse/{returnType}{?pageSize,leaseTime}",
        "all_relationships": "http://myserver:7474/db/data/node/4/relationships/all",
        "incoming_typed_relationships": "http://myserver:7474/db/data/node/4/relationships/in/{-list|&|types}"
    }
]

what i tried is :

  def messages=[];
  for ( i in families) {
      messages?.add(i);
  }

how i can get familes.data.name in message array .

Here is what i tried :

def messages=[];
  for ( i in families) {
    def map = new groovy.json.JsonSlurper().parseText(i);
     def msg=map*.data.name;
   messages?.add(i);
  }
  return messages;

and get this error :

 javax.script.ScriptException: groovy.lang.MissingMethodException: No signature of method: groovy.json.JsonSlurper.parseText() is applicable for argument types: (com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jVertex) values: [v[4]]\nPossible solutions: parseText(java.lang.String), parse(java.io.Reader)

Answer 1

Or use Groovy’s native JSON parsing:

def families = new groovy.json.JsonSlurper().parseText( jsonAsString )
def messages = families*.data.name

Since you edited the question to give us the information we needed, you can try:

def messages=[];
families.each { i ->
  def map = new groovy.json.JsonSlurper().parseText( i.toString() )
  messages.addAll( map*.data.name )
}
messages

Though it should be said that the toString() method in com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jVertex makes no guarantees to be valid JSON… You should probably be using the getProperty( name ) function of Neo4jVertex rather than relying on a side-effect of toString()

What are you doing to generate the first bit of text (which you state is JSON and make no mention of how it’s created)