com.exasol.projectkeeper.xpath.XPathErrorHandlingWrapper Maven / Gradle / Ivy

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Project keeper is a tool that verifies and fixes project setups.

There is a newer version: 4.4.0

package com.exasol.projectkeeper.xpath;

import javax.xml.xpath.*;

import org.w3c.dom.Node;

import com.exasol.errorreporting.ExaError;

/**
 * Helper class for XPath evaluation.
 */
public class XPathErrorHandlingWrapper {
    private static final XPathFactory X_PATH_FACTORY = XPathFactory.newInstance();

    private XPathErrorHandlingWrapper() {
        // empty on purpose
    }

    /**
     * Evaluate an XPath on a given document node.
     * 
     * @param current node to use a current node in XPath
     * @param xPath   xPath String
     * @return evaluated node
     */
    public static Node runXPath(final Node current, final String xPath) {
        try {
            return (Node) X_PATH_FACTORY.newXPath().compile(xPath).evaluate(current, XPathConstants.NODE);
        } catch (final XPathExpressionException exception) {
            throw new IllegalStateException(ExaError.messageBuilder("F-PK-CORE-9")
                    .message("Invalid xpath {{xpath}}.", xPath).ticketMitigation().toString(), exception);
        }
    }
}