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/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* @fileoverview function used in QBE for DB
* @name Database Operations
*
* @requires jQuery
* @requires jQueryUI
* @requires js/functions.js
*
*/
/* global sprintf */ // js/vendor/sprintf.js
function getFormatsText () {
return {
'=': ' = \'%s\'',
'>': ' > \'%s\'',
'>=': ' >= \'%s\'',
'<': ' < \'%s\'',
'<=': ' <= \'%s\'',
'!=': ' != \'%s\'',
'LIKE': ' LIKE \'%s\'',
'LIKE %...%': ' LIKE \'%%%s%%\'',
'NOT LIKE': ' NOT LIKE \'%s\'',
'BETWEEN': ' BETWEEN \'%s\'',
'NOT BETWEEN': ' NOT BETWEEN \'%s\'',
'IS NULL': ' \'%s\' IS NULL',
'IS NOT NULL': ' \'%s\' IS NOT NULL',
'REGEXP': ' REGEXP \'%s\'',
'REGEXP ^...$': ' REGEXP \'^%s$\'',
'NOT REGEXP': ' NOT REGEXP \'%s\''
};
}
function generateCondition (criteriaDiv, table) {
var query = '`' + Functions.escapeBacktick(table.val()) + '`.';
query += '`' + Functions.escapeBacktick(table.siblings('.columnNameSelect').first().val()) + '`';
if (criteriaDiv.find('.criteria_rhs').first().val() === 'text') {
var formatsText = getFormatsText();
query += sprintf(formatsText[criteriaDiv.find('.criteria_op').first().val()], Functions.escapeSingleQuote(criteriaDiv.find('.rhs_text_val').first().val()));
} else {
query += ' ' + criteriaDiv.find('.criteria_op').first().val();
query += ' `' + Functions.escapeBacktick(criteriaDiv.find('.tableNameSelect').first().val()) + '`.';
query += '`' + Functions.escapeBacktick(criteriaDiv.find('.columnNameSelect').first().val()) + '`';
}
return query;
}
// eslint-disable-next-line no-unused-vars
function generateWhereBlock () {
var count = 0;
var query = '';
$('.tableNameSelect').each(function () {
var criteriaDiv = $(this).siblings('.slide-wrapper').first();
var useCriteria = $(this).siblings('.criteria_col').first();
if ($(this).val() !== '' && useCriteria.prop('checked')) {
if (count > 0) {
criteriaDiv.find('input.logical_op').each(function () {
if ($(this).prop('checked')) {
query += ' ' + $(this).val() + ' ';
}
});
}
query += generateCondition(criteriaDiv, $(this));
count++;
}
});
return query;
}
function generateJoin (newTable, tableAliases, fk) {
var query = '';
query += ' \n\tLEFT JOIN ' + '`' + Functions.escapeBacktick(newTable) + '`';
if (tableAliases[fk.TABLE_NAME][0] !== '') {
query += ' AS `' + Functions.escapeBacktick(tableAliases[newTable][0]) + '`';
query += ' ON `' + Functions.escapeBacktick(tableAliases[fk.TABLE_NAME][0]) + '`';
} else {
query += ' ON `' + Functions.escapeBacktick(fk.TABLE_NAME) + '`';
}
query += '.`' + fk.COLUMN_NAME + '`';
if (tableAliases[fk.REFERENCED_TABLE_NAME][0] !== '') {
query += ' = `' + Functions.escapeBacktick(tableAliases[fk.REFERENCED_TABLE_NAME][0]) + '`';
} else {
query += ' = `' + Functions.escapeBacktick(fk.REFERENCED_TABLE_NAME) + '`';
}
query += '.`' + fk.REFERENCED_COLUMN_NAME + '`';
return query;
}
function existReference (table, fk, usedTables) {
var isReferredBy = fk.TABLE_NAME === table && usedTables.includes(fk.REFERENCED_TABLE_NAME);
var isReferencedBy = fk.REFERENCED_TABLE_NAME === table && usedTables.includes(fk.TABLE_NAME);
return isReferredBy || isReferencedBy;
}
function tryJoinTable (table, tableAliases, usedTables, foreignKeys) {
for (var i = 0; i < foreignKeys.length; i++) {
var fk = foreignKeys[i];
if (existReference(table, fk, usedTables)) {
return generateJoin(table, tableAliases, fk);
}
}
return '';
}
function appendTable (table, tableAliases, usedTables, foreignKeys) {
var query = tryJoinTable (table, tableAliases, usedTables, foreignKeys);
if (query === '') {
if (usedTables.length > 0) {
query += '\n\t, ';
}
query += '`' + Functions.escapeBacktick(table) + '`';
if (tableAliases[table][0] !== '') {
query += ' AS `' + Functions.escapeBacktick(tableAliases[table][0]) + '`';
}
}
usedTables.push(table);
return query;
}
// eslint-disable-next-line no-unused-vars
function generateFromBlock (tableAliases, foreignKeys) {
var usedTables = [];
var query = '';
for (var table in tableAliases) {
if (tableAliases.hasOwnProperty(table)) {
query += appendTable(table, tableAliases, usedTables, foreignKeys);
}
}
return query;
}
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