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src/share/jaf_classes/javax/activation/URLDataSource.java@373ffda63c9a (annotated)

src/share/jaf_classes/javax/activation/URLDataSource.java

Wed, 27 Apr 2016 01:27:09 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:27:09 +0800

changeset 0

373ffda63c9a

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/jaxws/
changeset: 657:d47a47f961ee
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1997, 2005, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation. Oracle designates this
aoqi@0	8	* particular file as subject to the "Classpath" exception as provided
aoqi@0	9	* by Oracle in the LICENSE file that accompanied this code.
aoqi@0	10	*
aoqi@0	11	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	14	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	15	* accompanied this code).
aoqi@0	16	*
aoqi@0	17	* You should have received a copy of the GNU General Public License version
aoqi@0	18	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	19	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	20	*
aoqi@0	21	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	22	* or visit www.oracle.com if you need additional information or have any
aoqi@0	23	* questions.
aoqi@0	24	*/
aoqi@0	25
aoqi@0	26	package javax.activation;
aoqi@0	27
aoqi@0	28	import java.net.URL;
aoqi@0	29	import java.net.URLConnection;
aoqi@0	30	import java.io.InputStream;
aoqi@0	31	import java.io.OutputStream;
aoqi@0	32	import java.io.IOException;
aoqi@0	33
aoqi@0	34	/**
aoqi@0	35	* The URLDataSource class provides an object that wraps a <code>URL</code>
aoqi@0	36	* object in a DataSource interface. URLDataSource simplifies the handling
aoqi@0	37	* of data described by URLs within the JavaBeans Activation Framework
aoqi@0	38	* because this class can be used to create new DataHandlers. <i>NOTE: The
aoqi@0	39	* DataHandler object creates a URLDataSource internally,
aoqi@0	40	* when it is constructed with a URL.</i>
aoqi@0	41	*
aoqi@0	42	* @see javax.activation.DataSource
aoqi@0	43	* @see javax.activation.DataHandler
aoqi@0	44	*
aoqi@0	45	* @since 1.6
aoqi@0	46	*/
aoqi@0	47	public class URLDataSource implements DataSource {
aoqi@0	48	private URL url = null;
aoqi@0	49	private URLConnection url_conn = null;
aoqi@0	50
aoqi@0	51	/**
aoqi@0	52	* URLDataSource constructor. The URLDataSource class will
aoqi@0	53	* not open a connection to the URL until a method requiring it
aoqi@0	54	* to do so is called.
aoqi@0	55	*
aoqi@0	56	* @param url The URL to be encapsulated in this object.
aoqi@0	57	*/
aoqi@0	58	public URLDataSource(URL url) {
aoqi@0	59	this.url = url;
aoqi@0	60	}
aoqi@0	61
aoqi@0	62	/**
aoqi@0	63	* Returns the value of the URL content-type header field.
aoqi@0	64	* It calls the URL's <code>URLConnection.getContentType</code> method
aoqi@0	65	* after retrieving a URLConnection object.
aoqi@0	66	* <i>Note: this method attempts to call the <code>openConnection</code>
aoqi@0	67	* method on the URL. If this method fails, or if a content type is not
aoqi@0	68	* returned from the URLConnection, getContentType returns
aoqi@0	69	* "application/octet-stream" as the content type.</i>
aoqi@0	70	*
aoqi@0	71	* @return the content type.
aoqi@0	72	*/
aoqi@0	73	public String getContentType() {
aoqi@0	74	String type = null;
aoqi@0	75
aoqi@0	76	try {
aoqi@0	77	if (url_conn == null)
aoqi@0	78	url_conn = url.openConnection();
aoqi@0	79	} catch (IOException e) { }
aoqi@0	80
aoqi@0	81	if (url_conn != null)
aoqi@0	82	type = url_conn.getContentType();
aoqi@0	83
aoqi@0	84	if (type == null)
aoqi@0	85	type = "application/octet-stream";
aoqi@0	86
aoqi@0	87	return type;
aoqi@0	88	}
aoqi@0	89
aoqi@0	90	/**
aoqi@0	91	* Calls the <code>getFile</code> method on the URL used to
aoqi@0	92	* instantiate the object.
aoqi@0	93	*
aoqi@0	94	* @return the result of calling the URL's getFile method.
aoqi@0	95	*/
aoqi@0	96	public String getName() {
aoqi@0	97	return url.getFile();
aoqi@0	98	}
aoqi@0	99
aoqi@0	100	/**
aoqi@0	101	* The getInputStream method from the URL. Calls the
aoqi@0	102	* <code>openStream</code> method on the URL.
aoqi@0	103	*
aoqi@0	104	* @return the InputStream.
aoqi@0	105	*/
aoqi@0	106	public InputStream getInputStream() throws IOException {
aoqi@0	107	return url.openStream();
aoqi@0	108	}
aoqi@0	109
aoqi@0	110	/**
aoqi@0	111	* The getOutputStream method from the URL. First an attempt is
aoqi@0	112	* made to get the URLConnection object for the URL. If that
aoqi@0	113	* succeeds, the getOutputStream method on the URLConnection
aoqi@0	114	* is returned.
aoqi@0	115	*
aoqi@0	116	* @return the OutputStream.
aoqi@0	117	*/
aoqi@0	118	public OutputStream getOutputStream() throws IOException {
aoqi@0	119	// get the url connection if it is available
aoqi@0	120	url_conn = url.openConnection();
aoqi@0	121
aoqi@0	122	if (url_conn != null) {
aoqi@0	123	url_conn.setDoOutput(true);
aoqi@0	124	return url_conn.getOutputStream();
aoqi@0	125	} else
aoqi@0	126	return null;
aoqi@0	127	}
aoqi@0	128
aoqi@0	129	/**
aoqi@0	130	* Return the URL used to create this DataSource.
aoqi@0	131	*
aoqi@0	132	* @return The URL.
aoqi@0	133	*/
aoqi@0	134	public URL getURL() {
aoqi@0	135	return url;
aoqi@0	136	}
aoqi@0	137	}