User Profile Sample: Data Sync Fundamentals

  dependencies {
    ...

    implementation 'com.couchbase.lite:couchbase-lite-android-ee:3.0.0'
}

{
    "type":"user",
    "name":"Jane Doe",
    "email":"jame.doe@earth.org",
    "address":"101 Main Street",
    "image":CBLBlob (image/jpg),
    "university":"Missouri State University"
}

Map<String, Object> profile = new HashMap<>();
profile.put("name", nameInput.getText().toString());
profile.put("email", emailInput.getText().toString());
profile.put("address", addressInput.getText().toString());
profile.put("university", universityText.getText().toString());
profile.put("type", "user");
byte[] imageViewBytes = getImageViewBytes();

if (imageViewBytes != null) {
    profile.put("imageData", new com.couchbase.lite.Blob("image/jpeg", imageViewBytes));
}

{
    "type":"university","web_pages": [
      "http://www.missouristate.edu/"
    ],
    "name": "Missouri State University",
    "alpha_two_code": "US",
    "state-province": MO,
    "domains": [
      "missouristate.edu"
    ],
    "country": "United States"
}

Map<String, Object> properties = new HashMap<>();
properties.put("name", row.getDictionary("universities").getString("name"));
properties.put("country", row.getDictionary("universities").getString("country"));
properties.put("web_pages", row.getDictionary("universities").getArray("web_pages"));

docker network ls

docker network create -d bridge workshop

function sync(doc, oldDoc) {

   /* Authorization */

  // Verify the user making the request is the same as the one in doc's email
  requireUser(doc.email);

}

function sync(doc, oldDoc) {

   /* Data Validation */

   if (!isDelete()) {
      // Validate the presence of email fields
      validateNotEmpty("email", doc.email); (1)

      // Check if document is being created / added for first time
      // We allow any user to create the document
      if (isCreate()) {

        // Validate that the document Id _id is prefixed by owner.
        var expectedDocId = "user" + "::" + doc.email;

        if (expectedDocId != doc._id) { (2)
            throw({forbidden: "user doc Id must be of form user:email"});
        }

      } else {
         // Validate that the email hasn't changed.
        validateReadOnly("email", doc.email, oldDoc.email); (3)
      }

    }
  }


  // Verify that specified property exists
  function validateNotEmpty(key, value) {
    if (!value) {
      throw({forbidden: key + " is not provided."});
    }
  }

  // Verify that specified property value has not changed during update
  function validateReadOnly(name, value, oldValue) {
    if (value != oldValue) {
      throw({forbidden: name + " is read-only."});
    }
  }

  /* Routing */
  // Subsequent updates to document must be authorized
  var email = getEmail();

  // Add doc to the user's channel.
  channel("channel." + email); (1)

  // get email Id property
  function getEmail() {
    return (isDelete() ? oldDoc.email : doc.email);
  }

  /* Access Control */
  // Give user read access to channel
   if(!isDelete()) {
    // Deletion of user document is essentially deletion of user
       access(email,"channel." + email)
   }