query-generator.js
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var Utils = require("../../utils")
, util = require("util")
var escape = function(str) {
if (typeof str == 'string') {
return "'" + str.replace(/'/g, "''") + "'";
} else {
return str;
}
};
module.exports = (function() {
var QueryGenerator = {
createTableQuery: function(tableName, attributes, options) {
options = options || {}
var query = "CREATE TABLE IF NOT EXISTS <%= table %> (<%= attributes%>)"
, primaryKeys = []
, attrStr = Utils._.map(attributes, function(dataType, attr) {
if (Utils._.includes(dataType, 'PRIMARY KEY')) {
primaryKeys.push(attr)
return Utils.addTicks(attr) + " " + dataType
} else {
return Utils.addTicks(attr) + " " + dataType
}
}).join(", ")
, values = {
table: Utils.addTicks(tableName),
attributes: attrStr,
charset: (options.charset ? "DEFAULT CHARSET=" + options.charset : "")
}
return Utils._.template(query)(values).trim() + ";"
},
showTablesQuery: function() {
return "SELECT name FROM sqlite_master WHERE type='table';"
},
insertQuery: function(tableName, attrValueHash) {
var query = "INSERT INTO <%= table %> (<%= attributes %>) VALUES (<%= values %>);";
var replacements = {
table: Utils.addTicks(tableName),
attributes: Utils._.keys(attrValueHash).map(function(attr){return Utils.addTicks(attr)}).join(","),
values: Utils._.values(attrValueHash).map(function(value){
//SQLite has no type boolean :
if (typeof value === "boolean") {
value = value ? 1 : 0;
}
return escape((value instanceof Date) ? Utils.toSqlDate(value) : value)
}).join(",")
}
return Utils._.template(query)(replacements)
},
updateQuery: function(tableName, values, where) {
var query = "UPDATE <%= table %> SET <%= values %> WHERE <%= where %>"
var replacements = {
table: Utils.addTicks(tableName),
values: Utils._.map(values, function(value, key){
return Utils.addTicks(key) + "=" + escape((value instanceof Date) ? Utils.toSqlDate(value) : value)
}).join(","),
where: MySqlQueryGenerator.getWhereConditions(where)
}
return Utils._.template(query)(replacements)
},
deleteQuery: function(tableName, where, options) {
options = options || {}
var query = "DELETE FROM <%= table %> WHERE <%= where %>"
var replacements = {
table: Utils.addTicks(tableName),
where: this.getWhereConditions(where),
limit: Utils.escape(options.limit)
}
return Utils._.template(query)(replacements)
},
attributesToSQL: function(attributes) {
var result = {}
Utils._.map(attributes, function(dataType, name) {
if(Utils.isHash(dataType)) {
var template = "<%= type %>"
, replacements = { type: dataType.type }
if(dataType.hasOwnProperty('allowNull') && !dataType.allowNull && !dataType.primaryKey)
template += " NOT NULL"
if(dataType.defaultValue != undefined) {
template += " DEFAULT <%= defaultValue %>"
replacements.defaultValue = Utils.escape(dataType.defaultValue)
}
if(dataType.unique) template += " UNIQUE"
if(dataType.primaryKey) template += " PRIMARY KEY"
result[name] = Utils._.template(template)(replacements)
} else {
result[name] = dataType
}
})
return result
},
findAutoIncrementField: function(factory) {
var fields = Utils._.map(factory.attributes, function(definition, name) {
var isAutoIncrementField = (definition && (definition.indexOf('INTEGER PRIMARY KEY') == 0))
return isAutoIncrementField ? name : null
})
return Utils._.compact(fields)
}
}
var MySqlQueryGenerator = Utils._.extend(
Utils._.clone(require("../query-generator")),
Utils._.clone(require("../mysql/query-generator"))
)
return Utils._.extend(MySqlQueryGenerator, QueryGenerator)
})()