Examples of com.google.gdata.util.common.xml.XmlWriter

Package com.google.gdata.util.common.xml

Examples of com.google.gdata.util.common.xml.XmlWriter

com.google.gdata.util.common.xml.XmlWriter
Implements a simple XML writer on top of java.io.PrintWriter. This implementation can be conveniently used to generate XML responses in servlets.
The XmlWriter class exposes a number of protected methods that enable it to be subclassed for the purposes of customizing its output. See {@link com.google.javascript.util.JsonWriter} for an example.
Optional Behaviors
There are several behaviors of this class that are optionally available. These features are enabled by passing a {@code Set
}to the constructor:
```
new XmlWriter(sw, EnumSet.of(WriterFlags.WRITE_HEADER, WriterFlags.EXPAND_EMPTY, WriterFlags.PRETTY_PRINT), null)
```
The caller can supply any of the values enumerated in {@link XmlWriter.WriterFlags}, or none. Once a feature has been enabled in the constructor, it cannot be turned off.
Including XML Header
The {@code WRITE_HEADER} flags causes {@code XmlWriter} to emit an XMLheader at the beginning of the XML document:
```
<?xml version='1.0'?>
```
Expanding Empty Elements
The {@code EXPAND_EMPTY} flags causes {@code XmlWriter} to emit "expanded"empty elements (elements consisting of distinct begin and end tags):
```
 <foo> <wee really="yeah"></wee> </foo>
```
Pretty Printing

The {@code PRETTY_PRINT} flag enables pretty printing. This featureformats the XML output with using new lines and tab characters:
```
 <foo> <bar> <wee really="yeah"/> </bar> </foo>
```
Caveats
Elements containing mixed content (i.e. both text children and full-fledged elements) will not generally be formatted correctly. If your XML document contains mixed content, you may not want to use pretty printing:
Will produce wonky formatting:
```
 w.startElement(null, "txt", null, null); w.simpleElement(null, "fooey", null, null); w.characters("Kleenex"); w.endElement(null, "txt");
```
```
 <txt> <fooey/>Kleenex </txt>
```
You can ensure correct formatting of mixed content in your document by using the {@link #innerXml(String)} method to write raw XML.
Correctly formatted:
```
 w.startElement(null, "txt", null, null); w.innerXml("<fooey/>"); w.characters("Kleenex"); w.endElement(null, "txt");
```
```
 <txt><fooey/>Kleenex</txt>
```

  }


  /** Pretty-print an entry. */
  private static void pp(GoogleService service, BaseEntry entry, Writer w)
      throws IOException {
    XmlWriter xw = new XmlWriter(w, XML_PP, null);
    ExtensionProfile extProfile = service.getExtensionProfile();
    entry.generateAtom(xw, extProfile);
    xw.flush();
    w.write("\n");
    w.flush();
  }

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      this.xmlBlob = xmlBlob;
      this.mixedContent = mixedContent;
      this.innerXmlStringWriter = new StringWriter();
      try {
        this.innerXml = new XmlWriter(innerXmlStringWriter);


        // The XmlWriter constructor doesn't actually throw an IOException, so
        // once that constructor is fixed we can remove this catch block.
      } catch (IOException impossible) {
        throw new AssertionError(impossible);

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            throw new IllegalArgumentException("txtConent==null");
        }
        if( txtConent.getContent().isEmpty() )return "";
        
        StringWriter strw = new StringWriter();
        XmlWriter xmlWriter = new XmlWriter(strw);
        txtConent.getContent().generateRss(xmlWriter, "body", RssFormat.FULL_HTML);
        xmlWriter.flush();
        String xml = strw.toString();
        
        Document xdoc = XMLUtil.parseXML(xml);
        Element e = xdoc.getDocumentElement();
        return e.getTextContent();

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      this.xmlBlob = xmlBlob;
      this.mixedContent = mixedContent;
      this.innerXmlStringWriter = new StringWriter();
      try {
        this.innerXml = new XmlWriter(innerXmlStringWriter);
        
        // The XmlWriter constructor doesn't actually throw an IOException, so
        // once that constructor is fixed we can remove this catch block.
      } catch (IOException impossible) {
        throw new AssertionError(impossible);

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  public XmlWriter getRequestWriter() throws IOException {
    OutputStream requestStream = getRequestStream();
    Writer writer = new OutputStreamWriter(requestStream, "utf-8");
    return new XmlWriter(writer);
  }

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    XmlBlob cumulative = new XmlBlob();
    Collection<XmlNamespace> namespaces = cumulative.getNamespaces();


    StringWriter w = new StringWriter();
    XmlWriter xw = new XmlWriter(w);


    if (xmlBlob != null) {
      cumulative.setLang(xmlBlob.getLang());
      cumulative.setBase(xmlBlob.getBase());
      namespaces.addAll(xmlBlob.getNamespaces());
      w.write(xmlBlob.getBlob());
    }


    if (manifest != null) {
      for (XmlNamespace ns : manifest.getNamespaceDecls()) {
        XmlNamespace newNs = new XmlNamespace(ns.getAlias(), ns.getUri());
        if (!namespaces.contains(newNs)) {
          namespaces.add(newNs);
        }
      }
    }


    for (Extension ext : nonRepeatingExtensionMap.values()) {
      ext.generate(xw, extProfile);
    }


    for (List<Extension> extList : repeatingExtensionMap.values()) {
      xw.startRepeatingElement();
      for (Extension ext : extList) {
        ext.generate(xw, extProfile);
      }
      xw.endRepeatingElement();
    }


    cumulative.setBlob(w.toString());
    return cumulative;
  }

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    nonRepeatingExtensionMap.clear();
    repeatingExtensionMap.clear();


    // Prepare a fake XML document from the blob.
    StringWriter sw = new StringWriter();
    XmlWriter w = new XmlWriter(sw);
    XmlBlob.startElement(w, null, "CUMULATIVE_BLOB", blob, null, null);
    XmlBlob.endElement(w, null, "CUMULATIVE_BLOB", blob);


    // Now parse it.
    StringReader sr = new StringReader(sw.toString());

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  public XmlWriter getRequestWriter() throws IOException {
    OutputStream requestStream = getRequestStream();
    Writer writer = new OutputStreamWriter(requestStream, "utf-8");
    return new XmlWriter(writer);
  }

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  public String getPlainText() {


    try {


      StringWriter sw = new StringWriter();
      XmlWriter xw = new XmlWriter(sw);
      xw.innerXml(xhtml.getBlob());


      return HtmlToText.htmlToPlainText(sw.toString());


    } catch (IOException e) {
      // IOException isn't very meaningful to callers, so it's better to

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      // Because RSS doesn't allow child markup, we convert XHTML into an
      // encoded string, just like HTML.


      StringWriter sw = new StringWriter();
      XmlWriter xw = new XmlWriter(sw);
      xw.innerXml(xhtml.getBlob());


      // At this point, sw contains the <xhtml:div> element.
      w.simpleElement(Namespaces.rssNs, elementName, null, sw.toString());
      break;

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Examples of com.google.gdata.util.common.xml.XmlWriter

Optional Behaviors

Including XML Header

Expanding Empty Elements

Pretty Printing

Caveats

Related Classes of com.google.gdata.util.common.xml.XmlWriter