/*
* Copyright 2014 Red Hat, Inc.
*
* Red Hat licenses this file to you under the Apache License, version 2.0
* (the "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
/** @module vertx-js/read_stream */
var utils = require('vertx-js/util/utils');
var Pipe = require('vertx-js/pipe');
var WriteStream = require('vertx-js/write_stream');
var StreamBase = require('vertx-js/stream_base');
var Future = require('vertx-js/future');
var Promise = require('vertx-js/promise');
var io = Packages.io;
var JsonObject = io.vertx.core.json.JsonObject;
var JsonArray = io.vertx.core.json.JsonArray;
var JReadStream = Java.type('io.vertx.core.streams.ReadStream');
/**
Represents a stream of items that can be read from.
<p>
@class
*/
var ReadStream = function(j_val, j_arg_0) {
var j_readStream = j_val;
var that = this;
var j_T = typeof j_arg_0 !== 'undefined' ? j_arg_0 : utils.unknown_jtype;StreamBase.call(this, j_val);
var __super_exceptionHandler = this.exceptionHandler;
var __super_handler = this.handler;
var __super_pause = this.pause;
var __super_resume = this.resume;
var __super_fetch = this.fetch;
var __super_endHandler = this.endHandler;
var __super_pipe = this.pipe;
var __super_pipeTo = this.pipeTo;
/**
Set an exception handler on the read stream.
@public
@param handler {function} the exception handler
@return {ReadStream} a reference to this, so the API can be used fluently
*/
this.exceptionHandler = function(handler) {
var __args = arguments;
if (__args.length === 1 && (typeof __args[0] === 'function' || __args[0] == null)) {
j_readStream["exceptionHandler(io.vertx.core.Handler)"](handler == null ? null : function(jVal) {
handler(utils.convReturnThrowable(jVal));
}) ;
return that;
} else if (typeof __super_exceptionHandler != 'undefined') {
return __super_exceptionHandler.apply(this, __args);
}
else throw new TypeError('function invoked with invalid arguments');
};
/**
Set a data handler. As data is read, the handler will be called with the data.
@public
@param handler {function}
@return {ReadStream} a reference to this, so the API can be used fluently
*/
this.handler = function(handler) {
var __args = arguments;
if (__args.length === 1 && (typeof __args[0] === 'function' || __args[0] == null)) {
j_readStream["handler(io.vertx.core.Handler)"](handler == null ? null : function(jVal) {
handler(j_T.wrap(jVal));
}) ;
return that;
} else if (typeof __super_handler != 'undefined') {
return __super_handler.apply(this, __args);
}
else throw new TypeError('function invoked with invalid arguments');
};
/**
Pause the <code>ReadStream</code>, it sets the buffer in <code>fetch</code> mode and clears the actual demand.
<p>
While it's paused, no data will be sent to the data <code>handler</code>.
@public
@return {ReadStream} a reference to this, so the API can be used fluently
*/
this.pause = function() {
var __args = arguments;
if (__args.length === 0) {
j_readStream["pause()"]() ;
return that;
} else if (typeof __super_pause != 'undefined') {
return __super_pause.apply(this, __args);
}
else throw new TypeError('function invoked with invalid arguments');
};
/**
Resume reading, and sets the buffer in <code>flowing</code> mode.
<p/>
If the <code>ReadStream</code> has been paused, reading will recommence on it.
@public
@return {ReadStream} a reference to this, so the API can be used fluently
*/
this.resume = function() {
var __args = arguments;
if (__args.length === 0) {
j_readStream["resume()"]() ;
return that;
} else if (typeof __super_resume != 'undefined') {
return __super_resume.apply(this, __args);
}
else throw new TypeError('function invoked with invalid arguments');
};
/**
Fetch the specified <code>amount</code> of elements. If the <code>ReadStream</code> has been paused, reading will
recommence with the specified <code>amount</code> of items, otherwise the specified <code>amount</code> will
be added to the current stream demand.
@public
@param amount {number}
@return {ReadStream} a reference to this, so the API can be used fluently
*/
this.fetch = function(amount) {
var __args = arguments;
if (__args.length === 1 && typeof __args[0] ==='number') {
j_readStream["fetch(long)"](amount) ;
return that;
} else if (typeof __super_fetch != 'undefined') {
return __super_fetch.apply(this, __args);
}
else throw new TypeError('function invoked with invalid arguments');
};
/**
Set an end handler. Once the stream has ended, and there is no more data to be read, this handler will be called.
@public
@param endHandler {function}
@return {ReadStream} a reference to this, so the API can be used fluently
*/
this.endHandler = function(endHandler) {
var __args = arguments;
if (__args.length === 1 && (typeof __args[0] === 'function' || __args[0] == null)) {
j_readStream["endHandler(io.vertx.core.Handler)"](endHandler) ;
return that;
} else if (typeof __super_endHandler != 'undefined') {
return __super_endHandler.apply(this, __args);
}
else throw new TypeError('function invoked with invalid arguments');
};
/**
Pause this stream and return a {@link Pipe} to transfer the elements of this stream to a destination {@link WriteStream}.
<p/>
The stream will be resumed when the pipe will be wired to a <code>WriteStream</code>.
@public
@return {Pipe} a pipe
*/
this.pipe = function() {
var __args = arguments;
if (__args.length === 0) {
return utils.convReturnVertxGen(Pipe, j_readStream["pipe()"](), undefined) ;
} else if (typeof __super_pipe != 'undefined') {
return __super_pipe.apply(this, __args);
}
else throw new TypeError('function invoked with invalid arguments');
};
/**
Pipe this <code>ReadStream</code> to the <code>WriteStream</code>.
<p>
Elements emitted by this stream will be written to the write stream until this stream ends or fails.
<p>
Once this stream has ended or failed, the write stream will be ended and the <code>handler</code> will be
called with the result.
@public
@param dst {WriteStream} the destination write stream
@param handler {function}
*/
this.pipeTo = function(dst, handler) {
var __args = arguments;
if (__args.length === 2 && typeof __args[0] === 'object' && __args[0]._jdel && typeof __args[1] === 'function') {
j_readStream["pipeTo(io.vertx.core.streams.WriteStream,io.vertx.core.Handler)"](dst._jdel, function(ar) {
if (ar.succeeded()) {
handler(null, null);
} else {
handler(null, ar.cause());
}
});
} else if (__args.length === 1 && typeof __args[0] === 'object' && __args[0]._jdel) {
var __prom = Promise.promise();
var __prom_completer_handler = function (result, cause) { if (cause === null) { __prom.complete(result); } else { __prom.fail(cause); } };
j_readStream["pipeTo(io.vertx.core.streams.WriteStream,io.vertx.core.Handler)"](dst._jdel, function(ar) {
if (ar.succeeded()) {
__prom_completer_handler(null, null);
} else {
__prom_completer_handler(null, ar.cause());
}
});
return __prom.future();
} else if (typeof __super_pipeTo != 'undefined') {
return __super_pipeTo.apply(this, __args);
}
else throw new TypeError('function invoked with invalid arguments');
};
// A reference to the underlying Java delegate
// NOTE! This is an internal API and must not be used in user code.
// If you rely on this property your code is likely to break if we change it / remove it without warning.
this._jdel = j_readStream;
};
ReadStream._jclass = utils.getJavaClass("io.vertx.core.streams.ReadStream");
ReadStream._jtype = {accept: function(obj) {
return ReadStream._jclass.isInstance(obj._jdel);
},wrap: function(jdel) {
var obj = Object.create(ReadStream.prototype, {});
ReadStream.apply(obj, arguments);
return obj;
},
unwrap: function(obj) {
return obj._jdel;
}
};
ReadStream._create = function(jdel) {var obj = Object.create(ReadStream.prototype, {});
ReadStream.apply(obj, arguments);
return obj;
}
module.exports = ReadStream;