de.larssh.json.dom

Class JsonDomXPathExpressions

java.lang.Object

de.larssh.json.dom.JsonDomXPathExpressions

public final class JsonDomXPathExpressions
extends Object

This class contains JSON DOM related helper methods for XPathExpression.

Method Summary

Modifier and Type	Method and Description
static <T> Optional<T>	getJsonElement(JsonDomValue<T> jsonDomValue, XPathExpression expression) Evaluates the compiled XPath expression in the specified context and optionally returns a JSON element.
static <T> List<T>	getJsonElementList(JsonDomValue<T> jsonDomValue, XPathExpression expression) Evaluates the compiled XPath expression in the specified context and returns a list of JSON elements.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getJsonElement

public static <T> Optional<T> getJsonElement(JsonDomValue<T> jsonDomValue,
                                             XPathExpression expression)
                                      throws XPathExpressionException

Evaluates the compiled XPath expression in the specified context and optionally returns a JSON element.

See the README.md file for a description of the JSON DOM hierarchy.

Type Parameters:

T - implementation specific JSON element type

Parameters:

jsonDomValue - the starting context

expression - the XPath expression

Returns:

evaluation result as optional T

Throws:

XPathExpressionException - If the expression cannot be evaluated.

getJsonElementList

public static <T> List<T> getJsonElementList(JsonDomValue<T> jsonDomValue,
                                             XPathExpression expression)
                                      throws XPathExpressionException

Evaluates the compiled XPath expression in the specified context and returns a list of JSON elements.

See the README.md file for a description of the JSON DOM hierarchy.

Type Parameters:

T - implementation specific JSON element type

Parameters:

jsonDomValue - the starting context

expression - the XPath expression

Returns:

evaluation result as list of T

Throws:

XPathExpressionException - If the expression cannot be evaluated.