13944696202

Committed 19 Mar 2025 10:48AM UTC coverage: 67.644% (-0.01%) from 67.657%

Build # 13944696202

Build Type

Pull #1146

github

Committed by

web-flow

Commit Message

Merge 255542aee into 2ef884351

Pull Request Pull Request #1146: Fix/1008 improve upgrade settings

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3043 of 4923 branches covered (61.81%)

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79.37

cli/src/main/java/com/devonfw/tools/ide/merge/xmlmerger/matcher/IdComputer.java

package com.devonfw.tools.ide.merge.xmlmerger.matcher;

import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;

import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

import com.devonfw.tools.ide.context.IdeContext;
import com.devonfw.tools.ide.merge.xmlmerger.XmlMergeSupport;

/**
 * The IdComputer class is responsible for building XPath expressions and evaluating those expressions to match elements in a target document.
 */
public class IdComputer {

  /** The value of merge:id that is used to evaluate the xpath expression. */
  private final String id;

  private final IdeContext context;

  private static final XPathFactory xPathFactory = XPathFactory.newInstance();

  /**
   * The constructor.
   *
   * @param id the {@link #getId() merge ID}.
   */
  public IdComputer(String id, IdeContext context) {

    super();
    this.id = id;
    this.context = context;
  }

  /**
   * @return the value of "merge:id" attribute what is an {@link XPath} expression.
   * @see XmlMergeSupport#getMergeId(Element)
   */
  public String getId() {

    return this.id;
  }

  /**
   * Evaluates the XPath expression for the given merge element in the target element.
   *
   * @param templateElement the template {@link Element} for which to build the {@link XPath} expression.
   * @param workspaceElement the workspace {@link Element} in which to evaluate the {@link XPath} expression.
   * @return the matched Element if found, or {@code null} if not found
   */
  public Element evaluateExpression(Element templateElement, Element workspaceElement) {
    XPath xpath = xPathFactory.newXPath();
    xpath.setNamespaceContext(new NamespaceContextFromElement(templateElement));
    String xpathExpr = buildXPathExpression(templateElement);
    try {
      XPathExpression xpathExpression = xpath.compile(xpathExpr);
      NodeList nodeList = (NodeList) xpathExpression.evaluate(workspaceElement, XPathConstants.NODESET);
      int length = nodeList.getLength();
      if (length == 1) {
        return (Element) nodeList.item(0);
      } else if (length == 0) {
        return null;
      } else {
        this.context.warning(length + " matches found for XPath " + xpathExpr + " in workspace XML at " + XmlMergeSupport.getXPath(workspaceElement, true));
        return (Element) nodeList.item(0);
      }
    } catch (XPathExpressionException e) {
      throw new IllegalStateException("Failed to compile XPath expression " + xpath, e);
    }
  }

  /**
   * Builds the XPath expression for the given merge element based on the {@link #getId()} merge:id} value.
   *
   * @param element the {@link Element} for which to build the XPath expression
   * @return the XPath expression as a {@link String}.
   */
  private String buildXPathExpression(Element element) {

    String namespaceURI = element.getNamespaceURI();
    String localName = element.getLocalName();
    if (localName == null) {
      localName = element.getTagName();
    }
    String prefix = element.getPrefix();

    StringBuilder xpathBuilder = new StringBuilder(localName.length());
    if ((prefix != null) && !prefix.isEmpty()) {
      xpathBuilder.append(prefix).append(":");
    }
    xpathBuilder.append(localName);
    if (this.id.startsWith("@")) {
      String attributeName = this.id.substring(1);
      String attributeValue = element.getAttribute(attributeName);
      xpathBuilder.append('[').append(this.id).append("='").append(XmlMergeSupport.escapeSingleQuotes(attributeValue)).append("']");
    } else if (this.id.equals(XmlMergeSupport.XPATH_ELEMENT_NAME)) {
      xpathBuilder.append("[local-name()='").append(localName).append("']");
      if ((namespaceURI != null) && !namespaceURI.isEmpty()) {
        xpathBuilder.append(" and namespace-uri()='").append(namespaceURI).append('\'');
      }
    } else if (this.id.equals(XmlMergeSupport.XPATH_ELEMENT_TEXT)) {
      String textContent = element.getTextContent();
      xpathBuilder.append("[text()='").append(XmlMergeSupport.escapeSingleQuotes(textContent)).append("']");
    } else { // custom xpath like ../element[@attr='value']
      return this.id;
    }
    return xpathBuilder.toString();
  }

}

1	package com.devonfw.tools.ide.merge.xmlmerger.matcher;
2
3	import javax.xml.xpath.XPath;
4	import javax.xml.xpath.XPathConstants;
5	import javax.xml.xpath.XPathExpression;
6	import javax.xml.xpath.XPathExpressionException;
7	import javax.xml.xpath.XPathFactory;
8
9	import org.w3c.dom.Element;
10	import org.w3c.dom.NodeList;
11
12	import com.devonfw.tools.ide.context.IdeContext;
13	import com.devonfw.tools.ide.merge.xmlmerger.XmlMergeSupport;
14
15	/**
16	* The IdComputer class is responsible for building XPath expressions and evaluating those expressions to match elements in a target document.
17	*/
18	public class IdComputer {
19
20	/** The value of merge:id that is used to evaluate the xpath expression. */
21	private final String id;
22
23	private final IdeContext context;
24
25	private static final XPathFactory xPathFactory = XPathFactory.newInstance();	3✔
26
27	/**
28	* The constructor.
29	*
30	* @param id the {@link #getId() merge ID}.
31	*/
32	public IdComputer(String id, IdeContext context) {
33
34	super();	2✔
35	this.id = id;	3✔
36	this.context = context;	3✔
37	}	1✔
38
39	/**
40	* @return the value of "merge:id" attribute what is an {@link XPath} expression.
41	* @see XmlMergeSupport#getMergeId(Element)
42	*/
43	public String getId() {
44
45	return this.id;	×
46	}
47
48	/**
49	* Evaluates the XPath expression for the given merge element in the target element.
50	*
51	* @param templateElement the template {@link Element} for which to build the {@link XPath} expression.
52	* @param workspaceElement the workspace {@link Element} in which to evaluate the {@link XPath} expression.
53	* @return the matched Element if found, or {@code null} if not found
54	*/
55	public Element evaluateExpression(Element templateElement, Element workspaceElement) {
56	XPath xpath = xPathFactory.newXPath();	3✔
57	xpath.setNamespaceContext(new NamespaceContextFromElement(templateElement));	6✔
58	String xpathExpr = buildXPathExpression(templateElement);	4✔
59	try {
60	XPathExpression xpathExpression = xpath.compile(xpathExpr);	4✔
61	NodeList nodeList = (NodeList) xpathExpression.evaluate(workspaceElement, XPathConstants.NODESET);	6✔
62	int length = nodeList.getLength();	3✔
63	if (length == 1) {	3✔
64	return (Element) nodeList.item(0);	5✔
65	} else if (length == 0) {	2!
66	return null;	2✔
67	} else {
68	this.context.warning(length + " matches found for XPath " + xpathExpr + " in workspace XML at " + XmlMergeSupport.getXPath(workspaceElement, true));	×
69	return (Element) nodeList.item(0);	×
70	}
71	} catch (XPathExpressionException e) {	×
72	throw new IllegalStateException("Failed to compile XPath expression " + xpath, e);	×
73	}
74	}
75
76	/**
77	* Builds the XPath expression for the given merge element based on the {@link #getId()} merge:id} value.
78	*
79	* @param element the {@link Element} for which to build the XPath expression
80	* @return the XPath expression as a {@link String}.
81	*/
82	private String buildXPathExpression(Element element) {
83
84	String namespaceURI = element.getNamespaceURI();	3✔
85	String localName = element.getLocalName();	3✔
86	if (localName == null) {	2!
87	localName = element.getTagName();	×
88	}
89	String prefix = element.getPrefix();	3✔
90
91	StringBuilder xpathBuilder = new StringBuilder(localName.length());	6✔
92	if ((prefix != null) && !prefix.isEmpty()) {	5!
93	xpathBuilder.append(prefix).append(":");	6✔
94	}
95	xpathBuilder.append(localName);	4✔
96	if (this.id.startsWith("@")) {	5✔
97	String attributeName = this.id.substring(1);	5✔
98	String attributeValue = element.getAttribute(attributeName);	4✔
99	xpathBuilder.append('[').append(this.id).append("='").append(XmlMergeSupport.escapeSingleQuotes(attributeValue)).append("']");	14✔
100	} else if (this.id.equals(XmlMergeSupport.XPATH_ELEMENT_NAME)) {	6✔
101	xpathBuilder.append("[local-name()='").append(localName).append("']");	8✔
102	if ((namespaceURI != null) && !namespaceURI.isEmpty()) {	2!
103	xpathBuilder.append(" and namespace-uri()='").append(namespaceURI).append('\'');	×
104	}
105	} else if (this.id.equals(XmlMergeSupport.XPATH_ELEMENT_TEXT)) {	5✔
106	String textContent = element.getTextContent();	3✔
107	xpathBuilder.append("[text()='").append(XmlMergeSupport.escapeSingleQuotes(textContent)).append("']");	9✔
108	} else { // custom xpath like ../element[@attr='value']	1✔
109	return this.id;	3✔
110	}
111	return xpathBuilder.toString();	3✔
112	}
113
114	}

devonfw / IDEasy / 13944696202

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