Filter json data with a schema

[Fasi27]

Is it possible to filter json data with json-schema-validator?
I have a json data like:
data.json

{
  "format": "A4",
  "year": 2001,
  "tags": [
    "foo",
    "bar"
  ],
  "title": "title",
  "flag": true
}

and with filter1 one i like to extract the fields: format and title.
filter1.json

{
  "$schema": "http://json-schema.org/draft-04/schema",
  "additionalProperties": false,
  "properties": {
    "format": {
      "enum": [
        "A2",
        "A3",
        "A4"
      ],
      "type": "string"
    },
    "title": {
      "type": "string"
    }
  },
  "type": "object"
}

and with filter2 i like to get tags, title and flag
filter2.json

{
  "$schema": "http://json-schema.org/draft-04/schema",
  "additionalProperties": false,
  "properties": {
    "tags": {
      "items": {
        "type": "string"
      },
      "type": "array"
    },
    "title": {
      "type": "string"
    },
    "flag": {
      "type": "boolean"
    }
  },
  "type": "object"
}

Is there an easy way to do this?

[justin-tay]

You can see if you can implement that using a walker see https://github.com/networknt/json-schema-validator/blob/master/doc/walkers.md.

[Fasi27]

JsonSchemaFilterWalkTest.java.txt

not perfect but working walker filtering the data