Invoking Worklight Adapter and Displaying that JSON data in list view as strings

问题

This is my adapter.impl.js code.

 //This procedure implementation is to get all the details from the table which in database.
 var procedure1Statement = WL.Server.createSQLStatement("select * from employee");
 function procedure1() {
return WL.Server.invokeSQLStatement({
    preparedStatement : procedure1Statement,
    parameters : []
});
}

This is my JSON data retrieved from SQL Adapter in worklight.

{
"isSuccessful": true,
"resultSet": [
  {
     "EMAIL": "bkandregula@gmail.com",
     "ID": 1,
     "NAME": "Bhanu Kandregula"
  },
  {
     "EMAIL": "rbkandregula@gmail.com",
     "ID": 2,
     "NAME": "Raghu Kandregula"
  },
  {
     "EMAIL": "shyamsurisetty@gmail.com",
     "ID": 3,
     "NAME": "Shyam Surisetty"
  },
  {
     "EMAIL": "bunny@gmail.com",
     "ID": 4,
     "NAME": "Bunny"
  },
  {
     "EMAIL": "divya@gmail.com",
     "ID": 5,
     "NAME": "Divya Sri"
  },
  {
     "EMAIL": "chandhu@gmail.com",
     "ID": 6,
     "NAME": "Chandana"
  }
]
}

Not I was to invoke this adapter from Client side and display this data in list view on my mobile console. For that, this is the code which I used in client side js file.

function wlCommonInit(){
LoadSQLRecords();}

function loadSQLRecords(){
var invocationData = {
    adapter : 'MySQLadap',
    procedure : 'procedure1',
    parameters : []
};

WL.Client.invokeProcedure(invocationData,{
    onSuccess : loadSQLQuerySuccess,
    onFailure : loadSQLQueryFailure
});
}

function loadSQLQuerySuccess(result) {
    WL.Logger.debug("Retrieve success" +  JSON.stringify(result));
    displayFeeds(result.invocationResult.resultSet);
}

function loadSQLQueryFailure(result) {
    WL.Logger.error("Retrieve failure");
}

function displayFeeds(items) {
    var ul = $('#itemsList');
    for (var i = 0; i < items.length; i++) {
        var li = $('<li/>').html(items[i].id);
        li.append($('<li/>').html(items[i].name));
        li.append($('<li/>').html(items[i].email));
        li.append($('<hr>'));
        ul.append(li);
    }
  }

And this my HTML file code to display my data on screen.

<div id="wrapper">
        <ul id="itemsList"></ul>
 </div>

But This is not working with me. I have been searching many blogs and sites, But I was unable to trigger this. Please do help me in invoking adapter and display that data in list view on mobile console. Thank you.

回答1:

You need to correct the below and then re-deploy the application.

You have misspelled a function name:

LoadSQLRecords should be loadSQLRecords.

function wlCommonInit(){
    LoadSQLRecords(); // Upper-case 'L'; should be lower-case.
}

function loadSQLRecords(){
    var invocationData = {
        adapter : 'MySQLadap',
        procedure : 'procedure1',
        parameters : []
    };
};

You should have seen the following in the Chrome DevTools' console prior to the fix:

worklight.js:5147 Uncaught Exception: Uncaught ReferenceError: LoadSQLRecords is not defined at (compiled_code):4
main.js:4 Uncaught ReferenceError: LoadSQLRecords is not defined

You need to change the following in order to actually display any values.

use items.invocationResult.resultSet
use correct capitalization for the properties

From:

for (var i = 0; i < items.length; i++) {
    var li = $('<li/>').html(items[i].id);
    li.append($('<li/>').html(items[i].name));
    li.append($('<li/>').html(items[i].email));
    li.append($('<hr>'));
    ul.append(li);
}

To:

for (var i = 0; i < items.invocationResult.resultSet.length; i++) {
    var li = $('<li/>').html(items.invocationResult.resultSet[i].ID);
    li.append($('<li/>').html(items.invocationResult.resultSet[i].NAME));
    li.append($('<li/>').html(items.invocationResult.resultSet[i].EMAIL));
    li.append($('<hr>'));
    ul.append(li);
}

来源：https://stackoverflow.com/questions/27858282/invoking-worklight-adapter-and-displaying-that-json-data-in-list-view-as-strings

标签

java

javascript

ibm-mobilefirst

worklight-adapters

worklight-server