1 /*

     2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.

     3  *

     4  * Redistribution and use in source and binary forms, with or without

     5  * modification, are permitted provided that the following conditions

     6  * are met:

     7  *

     8  *   - Redistributions of source code must retain the above copyright

     9  *     notice, this list of conditions and the following disclaimer.

    10  *

    11  *   - Redistributions in binary form must reproduce the above copyright

    12  *     notice, this list of conditions and the following disclaimer in the

    13  *     documentation and/or other materials provided with the distribution.

    14  *

    15  *   - Neither the name of Oracle nor the names of its

    16  *     contributors may be used to endorse or promote products derived

    17  *     from this software without specific prior written permission.

    18  *

    19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

    20  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

    21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

    23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    26  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

    27  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

    28  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

    29  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    30  */

    31 

    32 /*

    33  * This sample demonstrates the use of es6 tagged template literal to

    34  * create a java object. A XML DOM Document object is created from

    35  * String using es6 tagged template literal.

    36  *

    37  * Usage:

    38  *    jjs --language=es6 dom_tagged_literal.js

    39  */

    40 

    41 // Java types used

    42 const BAIS = Java.type("java.io.ByteArrayInputStream")

    43 const DocBuilderFac = Java.type("javax.xml.parsers.DocumentBuilderFactory")

    44 const DOMSource = Java.type("javax.xml.transform.dom.DOMSource")

    45 const StreamResult = Java.type("javax.xml.transform.stream.StreamResult")

    46 const StringWriter = Java.type("java.io.StringWriter")

    47 const TransformerFactory = Java.type("javax.xml.transform.TransformerFactory")

    48 

    49 function DOM(str) {

    50     var docBuilder = DocBuilderFac.newInstance().newDocumentBuilder()

    51     docBuilder.validating = false

    52     return docBuilder["parse(java.io.InputStream)"](new BAIS(String(str).bytes))

    53 }

    54 

    55 // es6 tagged template literal to create DOM from

    56 // multi-line XML string

    57 

    58 const dom = DOM`

    59 <foo>

    60   <bar title="hello">world</bar>

    61 </foo>`

    62 

    63 // access DOM elements

    64 const foo = dom.documentElement

    65 print(foo.tagName)

    66 const bar = foo.getElementsByTagName("bar").item(0)

    67 print(bar.tagName)

    68 print(bar.getAttribute("title"))

    69 

    70 // modify DOM

    71 foo.setAttribute("name", "nashorn")

    72 foo.appendChild(dom.createElement("test"))

    73 

    74 // serialize DOM to XML string

    75 function domToXML(d) {

    76     const transformer = TransformerFactory.newInstance().newTransformer()

    77     const res = new StreamResult(new StringWriter())

    78     transformer.transform(new DOMSource(d), res)

    79     return res.writer.toString()

    80 }

    81 

    82 // serialize DOM to a String & print

    83 print(domToXML(dom))