3NF complete
Signed-off-by: Smita Kumari <kumarismita62@gmail.com>
This commit is contained in:
Smita Kumari
parent
f6ea59fac3
commit
d766b1459a
@ -326,6 +326,10 @@ $js_messages['strMoveRepeatingGroup'] = '<ol><b>' . __('The following actions wi
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. '<li>' . __('Create the following table') . '</li>';
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$js_messages['strNewTablePlaceholder'] = 'Enter new table name';
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$js_messages['strNewColumnPlaceholder'] = 'Enter column name';
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$js_messages['str3NFNormalization'] = __('Third step of normalization (3NF)');
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$js_messages['strConfirmTd'] = __('Confirm transitive dependencies');
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$js_messages['strSelectedTd'] = __('Selected dependencies are as follows:');
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$js_messages['strNoTdSelected'] = __('No dependencies selected!');
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/* For server_variables.js */
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$js_messages['strSave'] = __('Save');
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@ -31,7 +31,39 @@ function appendHtmlColumnsList()
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}
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);
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}
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function goTo3NFStep1(newTables)
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{
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if (Object.keys(newTables).length === 1) {
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newTables = [PMA_commonParams.get('table')];
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}
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$.post(
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"normalization.php",
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{
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"token": PMA_commonParams.get('token'),
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"ajax_request": true,
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"db": PMA_commonParams.get('db'),
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"tables": newTables,
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"step": '3.1'
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}, function(data) {
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$("#page_content h3").html(PMA_messages.str3NFNormalization);
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$("#mainContent legend").html(data.legendText);
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$("#mainContent h4").html(data.headText);
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$("#mainContent p").html(data.subText);
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$("#mainContent #extra").html(data.extra);
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$("#extra form").each(function() {
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form_id = $(this).attr('id');
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colname = $(this).data('colname');
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$("#"+form_id+" input[value='"+colname+"']").next().remove();
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$("#"+form_id+" input[value='"+colname+"']").remove();
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});
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$("#mainContent #newCols").html('');
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$('.tblFooters').html('');
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if (data.subText !== "") {
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$('.tblFooters').html('<input type="button" onClick="processDependencies(\'\', true);" value="'+PMA_messages.strDone+'"/>');
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}
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}
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);
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}
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function goTo2NFStep1() {
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$.post(
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"normalization.php",
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@ -49,7 +81,14 @@ function goTo2NFStep1() {
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$("#mainContent #extra").html(data.extra);
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$("#mainContent #newCols").html('');
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if (data.subText !== '') {
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$('.tblFooters').html('<input type="submit" value="'+PMA_messages.strDone+'" onclick="processPartialDependancies(\''+data.primary_key+'\');">');
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$('.tblFooters').html('<input type="submit" value="'+PMA_messages.strDone+'" onclick="processDependencies(\''+data.primary_key+'\');">');
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} else {
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if (normalizeto === '3nf') {
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$("#mainContent #newCols").html(PMA_messages.strToNextStep);
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setTimeout(function() {
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goTo3NFStep1([PMA_commonParams.get('table')]);
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}, 3000);
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}
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}
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});
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}
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@ -154,6 +193,7 @@ function goToStep2(extra)
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}
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);
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}
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function goTo2NFFinish(pd)
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{
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var tables = {};
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@ -167,6 +207,51 @@ function goTo2NFFinish(pd)
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"pd": JSON.stringify(pd),
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"newTablesName":JSON.stringify(tables),
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"createNewTables2NF":1};
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$.ajax({
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type: "GET",
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url: "normalization.php",
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data: datastring,
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async:false,
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success: function(data) {
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if (data.success === true) {
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if(data.queryError === false) {
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if (normalizeto === '3nf') {
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$("#pma_navigation_reload").click();
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goTo3NFStep1(tables);
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return true;
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}
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$("#mainContent legend").html(data.legendText);
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$("#mainContent h4").html(data.headText);
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$("#mainContent p").html('');
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$("#mainContent #extra").html('');
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$('.tblFooters').html('');
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} else {
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PMA_ajaxShowMessage(data.extra, false);
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}
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$("#pma_navigation_reload").click();
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} else {
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PMA_ajaxShowMessage(data.error, false);
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}
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}
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});
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}
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function goTo3NFFinish(newTables)
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{
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for (var table in newTables) {
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for (var newtbl in newTables[table]) {
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updatedname = $('#extra input[name="'+newtbl+'"]').val();
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newTables[table][updatedname] = newTables[table][newtbl];
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if (updatedname !== newtbl) {
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delete newTables[table][newtbl];
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}
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}
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}
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datastring = {"token": PMA_commonParams.get('token'),
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"ajax_request": true,
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"db": PMA_commonParams.get('db'),
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"newTables":JSON.stringify(newTables),
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"createNewTables3NF":1};
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$.ajax({
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type: "GET",
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url: "normalization.php",
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@ -202,7 +287,7 @@ function goTo2NFStep2(pd, primary_key)
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for (var dependson in pd) {
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if (dependson !== primary_key) {
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pdFound = true;
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extra += '<p class="displayblock desc">'+dependson +" -> "+pd[dependson].toString()+'</p>';
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extra += '<p class="displayblock desc">'+escapeHtml(dependson) +" -> "+escapeHtml(pd[dependson].toString())+'</p>';
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}
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}
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if(!pdFound) {
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@ -237,12 +322,74 @@ function goTo2NFStep2(pd, primary_key)
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});
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}
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function processPartialDependancies(primary_key)
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function goTo3NFStep2(pd, tablesTds)
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{
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$("#newCols").html('');
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$("#mainContent legend").html(PMA_messages.strStep+' 3.2 '+PMA_messages.strConfirmTd);
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$("#mainContent h4").html(PMA_messages.strSelectedTd);
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$("#mainContent p").html(PMA_messages.strPdHintNote);
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var extra = '<div class="dependencies_box">';
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var pdFound = false;
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for (var table in tablesTds) {
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for (var i in tablesTds[table]) {
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dependson = tablesTds[table][i];
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if (dependson !== '' && dependson !== table) {
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pdFound = true;
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extra += '<p class="displayblock desc">'+escapeHtml(dependson) +" -> "+escapeHtml(pd[dependson].toString())+'</p>';
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}
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}
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}
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if(!pdFound) {
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extra += '<p class="displayblock desc">'+PMA_messages.strNoTdSelected+'</p>';
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extra += '</div>';
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} else {
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extra += '</div>';
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datastring = {"token": PMA_commonParams.get('token'),
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"ajax_request": true,
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"db": PMA_commonParams.get('db'),
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"tables": JSON.stringify(tablesTds),
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"pd": JSON.stringify(pd),
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"getNewTables3NF":1};
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$.ajax({
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type: "GET",
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url: "normalization.php",
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data: datastring,
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async:false,
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success: function(data) {
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data_parsed = $.parseJSON(data.message);
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if (data.success === true) {
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extra += data_parsed.html;
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} else {
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PMA_ajaxShowMessage(data.error, false);
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}
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}
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});
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}
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$("#mainContent #extra").html(extra);
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$('.tblFooters').html('<input type="button" value="'+PMA_messages.strBack+'" id="backEditPd"/><input type="button" id="goTo3NFFinish" value="'+PMA_messages.strGo+'"/>');
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$("#goTo3NFFinish").click(function(){
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if (!pdFound) {
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goTo3NFFinish([]);
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} else {
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goTo3NFFinish(data_parsed.newTables);
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}
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});
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}
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function processDependencies(primary_key, isTransitive)
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{
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var pd = {};
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var tablesTds = {};
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var dependsOn;
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pd[primary_key] = [];
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$("#extra form").each(function() {
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if (isTransitive === true) {
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tblname = $(this).data('tablename');
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primary_key = tblname;
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if (!(tblname in tablesTds)) {
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tablesTds[tblname] = [];
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}
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tablesTds[tblname].push(primary_key);
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}
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form_id = $(this).attr('id');
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$('#'+form_id+' input[type=checkbox]:not(:checked)').removeAttr('checked');
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dependsOn = '';
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@ -251,9 +398,7 @@ function processPartialDependancies(primary_key)
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$(this).attr("checked","checked");
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});
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if (dependsOn === '') {
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$('#'+form_id+' input[type=checkbox]').each(function(){
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dependsOn = primary_key;
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});
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dependsOn = primary_key;
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} else {
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dependsOn = dependsOn.slice(0, -2);
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}
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@ -261,11 +406,24 @@ function processPartialDependancies(primary_key)
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pd[dependsOn] = [];
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}
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pd[dependsOn].push($(this).data('colname'));
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if (isTransitive === true) {
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if (!(tblname in tablesTds)) {
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tablesTds[tblname] = [];
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}
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if ($.inArray(dependsOn, tablesTds[tblname]) === -1) {
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tablesTds[tblname].push(dependsOn);
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}
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}
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});
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backup = $("#mainContent").html();
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goTo2NFStep2(pd, primary_key);
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if (isTransitive === true) {
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goTo3NFStep2(pd, tablesTds);
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} else {
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goTo2NFStep2(pd, primary_key);
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}
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return false;
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}
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function moveRepeatingGroup(repeatingCols) {
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newTable = $("input[name=repeatGroupTable]").val();
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newColumn = $("input[name=repeatGroupColumn]").val();
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@ -337,8 +337,9 @@ function PMA_getHtmlFor2NFstep1($db, $table)
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foreach ($columns as $column) {
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if (!in_array($column, $pk)) {
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$cnt++;
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$extra .= "<b>'" . htmlspecialchars($column)
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. "' depends on:</b><br>";
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$extra .= "<b>" . sprintf(
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__('\'%1$s\' depends on:'), htmlspecialchars($column)
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) . "</b><br>";
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$extra .= '<form id="pk_' . $cnt . '" data-colname="'
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. htmlspecialchars($column) . '" class="smallIndent">'
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. $selectPkForm . '</form><br/><br/>';
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@ -376,7 +377,7 @@ function PMA_getHtmlForNewTables2NF($partialDependencies,$table)
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'As per above partial dependencies, in order to put the '
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. 'original table \'%1$s\' into Second normal form we need '
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. 'to create the following tables:'
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), $table
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), htmlspecialchars($table)
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) . '</b></p>';
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$tableName = $table;
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$i=1;
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@ -466,6 +467,148 @@ function PMA_createNewTablesFor2NF($partialDependencies, $tablesName, $table, $d
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);
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}
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/**
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* build the html for showing the new tables to have in order
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* to put given tables in 3NF
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*
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* @param array $dependencies containing all the dependencies
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* @param array $tables tables formed after 2NF and need to convert to 3NF
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* @param string $db current database
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*
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* @return array containing html and the list of new tables
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*/
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function PMA_getHtmlForNewTables3NF($dependencies, $tables, $db)
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{
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$html = "";
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$i=1;
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$newTables = array();
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foreach ($tables as $table=>$arrDependson) {
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if (count(array_unique($arrDependson)) == 1) {
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continue;
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}
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$primary = PMA_Index::getPrimary($table, $db);
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$primarycols = $primary->getColumns();
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$pk = array();
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foreach ($primarycols as $col) {
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$pk[] = $col->getName();
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}
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$html .= '<p><b>' . sprintf(
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__(
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'As per above dependencies, in order to put the '
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. 'original table \'%1$s\' into Third normal form we need '
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. 'to create the following tables:'
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), htmlspecialchars($table)
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) . '</b></p>';
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$tableName = $table;
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$columnList = array();
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foreach ($arrDependson as $key) {
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$dependents = $dependencies->$key;
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if ($key == $table) {
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$key = implode(', ', $pk);
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}
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$tmpTableCols =array_merge(explode(', ', $key), $dependents);
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sort($tmpTableCols);
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if (!in_array($tmpTableCols, $columnList)) {
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$columnList[] = $tmpTableCols;
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$html .= '<p><input type="text" name="'
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. htmlspecialchars($tableName)
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. '" value="' . htmlspecialchars($tableName) . '"/>'
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. '( <u>' . htmlspecialchars($key) . '</u>'
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. (count($dependents)>0?', ':'')
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. htmlspecialchars(implode(', ', $dependents)) . ' )';
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$newTables[$table][$tableName] = array(
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"pk"=>$key, "nonpk"=>implode(', ', $dependents)
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);
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$i++;
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$tableName = 'table' . $i;
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}
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}
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}
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return array('html'=>$html, 'newTables'=>$newTables);
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}
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/**
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* create new tables or alter existing to get 3NF
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*
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* @param array $newTables list of new tables to be created
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* @param string $db current database
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*
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* @return array
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*/
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function PMA_createNewTablesFor3NF($newTables, $db)
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{
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$queries = array();
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$dropCols = false;
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$error = false;
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$headText = '<h3>' .
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__('The third step of normalization is complete.')
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. '</h3>';
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if (count((array)$newTables) == 0) {
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return array(
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'legendText'=>__('End of step'), 'headText'=>$headText,
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'queryError'=>$error
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);
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}
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$message = '';
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$GLOBALS['dbi']->selectDb($db, $GLOBALS['userlink']);
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foreach ($newTables as $originalTable=>$tablesList) {
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foreach ($tablesList as $table=>$cols) {
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if ($table != $originalTable) {
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$quotedPk = implode(
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', ', PMA_Util::backquote(explode(', ', $cols->pk))
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);
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$quotedNonpk = implode(
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', ', PMA_Util::backquote(explode(', ', $cols->nonpk))
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);
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$queries[] = 'CREATE TABLE ' . PMA_Util::backquote($table)
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. ' SELECT DISTINCT ' . $quotedPk
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. ', ' . $quotedNonpk
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. ' FROM ' . PMA_Util::backquote($originalTable) . ';';
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$queries[] = 'ALTER TABLE ' . PMA_Util::backquote($table)
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. ' ADD PRIMARY KEY(' . $quotedPk . ');';
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} else {
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$dropCols = $cols;
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}
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}
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if ($dropCols) {
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$columns = (array) $GLOBALS['dbi']->getColumnNames(
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$db, $originalTable, $GLOBALS['userlink']
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);
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$colPresent = array_merge(
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explode(', ', $dropCols->pk), explode(', ', $dropCols->nonpk)
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);
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$query = 'ALTER TABLE ' . PMA_Util::backquote($originalTable);
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foreach ($columns as $col) {
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if (!in_array($col, $colPresent)) {
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$query .= ' DROP ' . PMA_Util::backquote($col) . ',';
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}
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}
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$query = trim($query, ', ');
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$query .= ';';
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$queries[] = $query;
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} else {
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$queries[] = 'DROP TABLE ' . PMA_Util::backquote($originalTable);
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}
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$dropCols = false;
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}
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foreach ($queries as $query) {
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if (!$GLOBALS['dbi']->tryQuery($query, $GLOBALS['userlink'])) {
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$message = PMA_Message::error(__('Error in processing!'));
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$message->addMessage('<br /><br />');
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$message->addMessage(
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PMA_Message::rawError(
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$GLOBALS['dbi']->getError($GLOBALS['userlink'])
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)
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);
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$error = true;
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break;
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}
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}
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return array(
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'legendText'=>__('End of step'), 'headText'=>$headText,
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'queryError'=>$error, 'extra'=>$message
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);
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}
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/**
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* move the repeating group of columns to a new table
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*
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@ -528,6 +671,83 @@ function PMA_moveRepeatingGroup(
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'queryError'=>$error, 'message'=>$message
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);
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}
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/**
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* build html for 3NF step 1 to find the transitive dependencies
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*
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* @param string $db current database
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* @param array $tables tables formed after 2NF and need to process for 3NF
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*
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* @return string
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*/
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function PMA_getHtmlFor3NFstep1($db, $tables)
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{
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$legendText = __('Step 3.') . "1 " . __('Find transitive dependencies');
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$extra = "";
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$headText = __(
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'Please answer the following question(s) '
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. 'carefully to obtain a correct normalization.'
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);
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$subText = __(
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'For each of the column below, '
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. 'please select the <b>minimal set</b> of columns among given set '
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. 'whose values combined together are sufficient'
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. ' to determine the value of the column.<br>'
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. 'Note: A column may have no transitive dependency, '
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. 'in that case you don\'t have to select any.'
|
||||
);
|
||||
$cnt=0;
|
||||
foreach ($tables as $key=>$table) {
|
||||
$primary = PMA_Index::getPrimary($table, $db);
|
||||
$primarycols = $primary->getColumns();
|
||||
$selectTdForm = "";
|
||||
$pk = array();
|
||||
foreach ($primarycols as $col) {
|
||||
$pk[] = $col->getName();
|
||||
}
|
||||
$GLOBALS['dbi']->selectDb($db, $GLOBALS['userlink']);
|
||||
$columns = (array) $GLOBALS['dbi']->getColumnNames(
|
||||
$db, $table, $GLOBALS['userlink']
|
||||
);
|
||||
if (count($columns)-count($pk)<=1) {
|
||||
continue;
|
||||
}
|
||||
foreach ($columns as $column) {
|
||||
if (!in_array($column, $pk)) {
|
||||
$selectTdForm .= '<input type="checkbox" name="pd" value="'
|
||||
. htmlspecialchars($column) . '">'
|
||||
. '<span>' . htmlspecialchars($column) . '</span>';
|
||||
}
|
||||
}
|
||||
foreach ($columns as $column) {
|
||||
if (!in_array($column, $pk)) {
|
||||
$cnt++;
|
||||
$extra .= "<b>" . sprintf(
|
||||
__('\'%1$s\' depends on:'), htmlspecialchars($column)
|
||||
)
|
||||
. "</b><br>";
|
||||
$extra .= '<form id="td_' . $cnt . '" data-colname="'
|
||||
. htmlspecialchars($column) . '" data-tablename="'
|
||||
. htmlspecialchars($table) . '" class="smallIndent">'
|
||||
. $selectTdForm
|
||||
. '</form><br/><br/>';
|
||||
}
|
||||
}
|
||||
}
|
||||
if ($extra == "") {
|
||||
$headText = __(
|
||||
"No Transitive dependencies possible as the table "
|
||||
. "doesn't have any non primary key columns"
|
||||
);
|
||||
$subText = "";
|
||||
$extra = "<h3>" . __("Table is already in Third normal form!") . "</h3>";
|
||||
}
|
||||
$res = array(
|
||||
'legendText'=>$legendText, 'headText'=>$headText,
|
||||
'subText'=>$subText,'extra'=>$extra
|
||||
);
|
||||
return $res;
|
||||
}
|
||||
/**
|
||||
* get html for options to normalize table
|
||||
*
|
||||
|
||||
@ -57,6 +57,13 @@ if (isset($_REQUEST['getNewTables2NF'])) {
|
||||
exit;
|
||||
}
|
||||
|
||||
if (isset($_REQUEST['getNewTables3NF'])) {
|
||||
$dependencies = json_decode($_REQUEST['pd']);
|
||||
$tables = json_decode($_REQUEST['tables']);
|
||||
$newTables = PMA_getHtmlForNewTables3NF($dependencies, $tables, $db);
|
||||
echo json_encode($newTables);
|
||||
exit;
|
||||
}
|
||||
|
||||
$response = PMA_Response::getInstance();
|
||||
$header = $response->getHeader();
|
||||
@ -66,16 +73,6 @@ $scripts->addFile('jquery/jquery.uitablefilter.js');
|
||||
$normalForm = '1nf';
|
||||
if (isset($_REQUEST['normalizeTo'])) {
|
||||
$normalForm = $_REQUEST['normalizeTo'];
|
||||
if ($normalForm == '3nf') {
|
||||
$response->addHTML(
|
||||
'<h3 class="center">'
|
||||
. __('Second/Third step of normalization') . '</h3>'
|
||||
. '<fieldset>'
|
||||
. '<legend>Coming soon...</legend>'
|
||||
. 'Wait is worth it :-)</fieldset>'
|
||||
);
|
||||
exit;
|
||||
}
|
||||
}
|
||||
if (isset($_REQUEST['createNewTables2NF'])) {
|
||||
$partialDependencies = json_decode($_REQUEST['pd']);
|
||||
@ -84,6 +81,12 @@ if (isset($_REQUEST['createNewTables2NF'])) {
|
||||
$response->addJSON($res);
|
||||
exit;
|
||||
}
|
||||
if (isset($_REQUEST['createNewTables3NF'])) {
|
||||
$newtables = json_decode($_REQUEST['newTables']);
|
||||
$res = PMA_createNewTablesFor3NF($newtables, $db);
|
||||
$response->addJSON($res);
|
||||
exit;
|
||||
}
|
||||
if (isset($_POST['repeatingColumns'])) {
|
||||
$repeatingColumns = $_POST['repeatingColumns'];
|
||||
$newTable = $_POST['newTable'];
|
||||
@ -110,6 +113,10 @@ if (isset($_REQUEST['step1'])) {
|
||||
} else if (isset($_REQUEST['step']) && $_REQUEST['step'] == 2.1) {
|
||||
$res = PMA_getHtmlFor2NFstep1($db, $table);
|
||||
$response->addJSON($res);
|
||||
} else if (isset($_REQUEST['step']) && $_REQUEST['step'] == 3.1) {
|
||||
$tables = $_REQUEST['tables'];
|
||||
$res = PMA_getHtmlFor3NFstep1($db, $tables);
|
||||
$response->addJSON($res);
|
||||
} else {
|
||||
$response->addHTML(PMA_getHtmlForNormalizetable());
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user
