Class DOMUtil
java.lang.Object
org.apache.tools.ant.taskdefs.optional.junit.DOMUtil
Some utilities that might be useful when manipulating DOM trees.
-
Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionstatic interfaceFilter interface to be applied when iterating over a DOM tree.static classcustom implementation of a nodelist -
Method Summary
Modifier and TypeMethodDescriptionstatic ElementgetChildByTagName(Node parent, String tagname) Iterate over the children of a given node and return the first node that has a specific name.static StringgetNodeAttribute(Node node, String name) return the attribute value of an element.static NodeimportNode(Node parent, Node child) Simple tree walker that will clone recursively a node.static NodeListlistChildNodes(Node parent, DOMUtil.NodeFilter filter, boolean recurse) list a set of node that match a specific filter.
-
Method Details
-
listChildNodes
list a set of node that match a specific filter. The list can be made recursively or not.- Parameters:
parent- the parent node to search fromfilter- the filter that children should match.recurse-trueif you want the list to be made recursively otherwisefalse.- Returns:
- the node list that matches the filter.
-
getNodeAttribute
return the attribute value of an element.- Parameters:
node- the node to get the attribute from.name- the name of the attribute we are looking for the value.- Returns:
- the value of the requested attribute or
nullif the attribute was not found or ifnodeis not anElement.
-
getChildByTagName
Iterate over the children of a given node and return the first node that has a specific name.- Parameters:
parent- the node to search child from. Can benull.tagname- the child name we are looking for. Cannot benull.- Returns:
- the first child that matches the given name or
nullif the parent isnullor if a child does not match the given name.
-
importNode
Simple tree walker that will clone recursively a node. This is to avoid using parser-specific API such as Sun'schangeNodeOwnerwhen we are dealing with DOM L1 implementations sincecloneNode(boolean)will not change the owner document.changeNodeOwneris much faster and avoid the costly cloning process.importNodeis in the DOM L2 interface.- Parameters:
parent- the node parent to which we should do the import to.child- the node to clone recursively. Its clone will be appended toparent.- Returns:
- the cloned node that is appended to
parent
-