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POhow to call synchronise call in sqlite phonegap (check duplicate item before insert )
 

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  1. POhow to call synchronise call in sqlite phonegap (check duplicate item before insert )
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    <p>I need to check duplicate columns(item) before inserting the data in table .But it is asynchronise call .so it is not working .I need to call synchronise call so that i can get value <strong>true and false</strong> </p> <p>Then check for insert value or not.</p> <pre><code>function validationField() { db.transaction(getallTableCntend, errorCB); } function getallTableCntend(tx) { tx.executeSql('SELECT * FROM CaseTable', [], queryexcecute, errorCB); } function queryexcecute(tx, result) { var len = result.rows.length; for (var i = 0; i &lt; len; i++) { if(result.rows.item(i).CaseName ==$('.caseName_h').val()){ alert("Folder is already Exit."); isvalid=false; Break; return;; } } } I am calling this like this. $(document).on('click', '#AddButton', function() { isvalid = validationField(); if (isvalid) { insertData(); window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, onFileSystemSuccess, onFileSystemFail); } }); </code></pre> <hr> <p>May i create table Like that.. tx.executeSql('CREATE TABLE IF NOT EXISTS CaseTable (id INTEGER PRIMARY KEY AUTOINCREMENT, CaseName TEXT NOT NULL UNIQUE,CaseDate INTEGER ,TextArea TEXT NOT NULL)'); and Use Like That...</p> <pre><code>tx.executeSql('INSERT OR IGNORE INTO CaseTable(CaseName,CaseDate,TextArea) VALUES ("' + $('.caseName_h').val() + '", "' + $('.caseDate_h').val() + '","' + $('.caseTextArea_h').val() + '")'); </code></pre> <p>----------------------------------------------Do like that--------------</p> <pre><code>function checkExitingFolderName(){ db.transaction(getallTableCntend, errorCB); } function getallTableCntend(tx) { tx.executeSql('SELECT 1 FROM CaseTable WHERE CaseName ='+$('.caseName_h').val(), [], queryexcecute, errorCB); } function queryexcecute(tx, result) { var len = result.rows.length; alert("hi"+length); if(len&gt;0){ alert("Folder") } else{ insertData(); } } </code></pre>
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