What is XPath factory?

What is XPath factory?

An XPathFactory instance can be used to create XPath objects. See newInstance(String uri) for lookup mechanism. In other words, it is the application’s responsibility to ensure that at most one thread is using a XPathFactory object at any given moment.

What is XPathFactory in java?

XPathFactory is an abstract class in java that extends. java.lang.Object . An XPathFactory instance can be used to create. XPath objects. XPath is a standard syntax recommended by the W3C.

What is the use of XPath in Java?

XPath provides syntax to define part of an XML document. XPath Expression is a query language to select part of the XML document based on the query String. Using XPath Expressions, we can find nodes in any xml document satisfying the query string.

How do you create and evaluate an XPath expression in Java?

1. XPath example – Evaluate xpath on xml string

  1. Create org. xml. sax. InputSource containing with StringReader referencing to XML string.
  2. Create XPath from XPathFactory .
  3. Use xpath. evaluate(‘expression’, inputSource) to get result HTML.

What does XPath compile do?

We can compile an XPath expression passed as string and define what kind of data we are expecting to receive such a NODESET, NODE or String for example.

What is XPath in camel?

Camel supports XPath to allow an Expression or Predicate to be used in the DSL. For example you could use XPath to create an Predicate in a Message Filter or as an Expression for a Recipient List. Streams. If the message body is stream based, which means the input it receives is submitted to Camel as a stream.

What is NodeList in Java?

The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. NodeList objects in the DOM are live. The items in the NodeList are accessible via an integral index, starting from 0.

What is DocumentBuilderFactory?

public abstract class DocumentBuilderFactory extends Object. Defines a factory API that enables applications to obtain a parser that produces DOM object trees from XML documents.