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JavaScript

var helpers = require('./helpers')
module.exports = function(Target) {
var _ = require('lodash');
Target.prototype.toQuery = function(tz) {
var data = this.toSQL(this._method);
if (!_.isArray(data)) data = [data];
return _.map(data, function(statement) {
return this._formatQuery(statement.sql, statement.bindings, tz);
}, this).join(';\n');
};
// Format the query as sql, prepping bindings as necessary.
Target.prototype._formatQuery = function(sql, bindings, tz) {
if (this.client && this.client.prepBindings) {
bindings = this.client.prepBindings(bindings, tz);
}
return this.client.SqlString.format(sql, bindings, tz);
};
// Create a new instance of the `Runner`, passing in the current object.
Target.prototype.then = function(/* onFulfilled, onRejected */) {
var result = this.client.runner(this).run()
return result.then.apply(result, arguments);
};
// Add additional "options" to the builder. Typically used for client specific
// items, like the `mysql` and `sqlite3` drivers.
Target.prototype.options = function(opts) {
this._options = this._options || [];
this._options.push(_.clone(opts) || {});
this._cached = undefined
return this;
};
// Sets an explicit "connnection" we wish to use for this query.
Target.prototype.connection = function(connection) {
this._connection = connection;
return this;
};
// Set a debug flag for the current schema query stack.
Target.prototype.debug = function(enabled) {
this._debug = arguments.length ? enabled : true;
return this;
};
// Set the transaction object for this query.
Target.prototype.transacting = function(t) {
if (t && t.client) {
if (!t.client.transacting) {
helpers.warn('Invalid transaction value: ' + t.client)
} else {
this.client = t.client
}
}
return this;
};
// Initializes a stream.
Target.prototype.stream = function(options) {
return this.client.runner(this).stream(options);
};
// Initialize a stream & pipe automatically.
Target.prototype.pipe = function(writable, options) {
return this.client.runner(this).pipe(writable, options);
};
// Creates a method which "coerces" to a promise, by calling a
// "then" method on the current `Target`
_.each(['bind', 'catch', 'finally', 'asCallback',
'spread', 'map', 'reduce', 'tap', 'thenReturn',
'return', 'yield', 'ensure', 'nodeify', 'exec'], function(method) {
Target.prototype[method] = function() {
var then = this.then();
then = then[method].apply(then, arguments);
return then;
};
});
};