diff options
Diffstat (limited to 'src/main/java/org/openslx/util/XmlHelper.java')
| -rw-r--r-- | src/main/java/org/openslx/util/XmlHelper.java | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/main/java/org/openslx/util/XmlHelper.java b/src/main/java/org/openslx/util/XmlHelper.java index e3607d9..f9366e0 100644 --- a/src/main/java/org/openslx/util/XmlHelper.java +++ b/src/main/java/org/openslx/util/XmlHelper.java @@ -22,7 +22,9 @@ import javax.xml.xpath.XPathFactory; import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; +import org.w3c.dom.Attr; import org.w3c.dom.Document; +import org.w3c.dom.Element; import org.w3c.dom.Node; import org.w3c.dom.NodeList; import org.xml.sax.SAXException; @@ -157,4 +159,42 @@ public class XmlHelper return null; } } + + public static Element getOrCreateElement( Document doc, Element parent, String nsUri, String nsName, + String name, String attrName, String attrValue ) + { + final NodeList childList = parent.getElementsByTagNameNS( nsUri, name ); + Element element = null; + outer: for ( int i = 0; i < childList.getLength(); ++i ) { + Node n = childList.item( i ); + if ( n.getNodeType() != Node.ELEMENT_NODE ) + continue; + if ( attrName != null && attrValue != null ) { + for ( int ai = 0; ai < n.getAttributes().getLength(); ++ai ) { + Node attr = n.getAttributes().item( ai ); + if ( attr.getNodeType() != Attr.ELEMENT_NODE ) + continue; + Attr a = (Attr)attr; + if ( !attrName.equals( a.getLocalName() ) || !attrValue.equals( a.getValue() ) ) + continue; + element = (Element)n; + break outer; + } + } else { + element = (Element)n; + break; + } + } + if ( element == null ) { + // Need a new <qemu:device alias="hostdev0"> + element = doc.createElementNS( nsUri, name ); + element.setPrefix( nsName ); + if ( attrName != null && attrValue != null ) { + element.setAttribute( attrName, attrValue ); + } + parent.appendChild( element ); + } + return element; + } + } |