/*
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Copyright (c) 2001-2007,2015 Jeff Martin, Tim Bacon
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* Redistributions of source code must retain the above copyright
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* Redistributions in binary form must reproduce the above
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of its contributors may be used to endorse or promote products
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*/
package org.custommonkey.xmlunit;
import java.util.Arrays;
import org.xmlunit.diff.ElementSelector;
import org.xmlunit.diff.ElementSelectors;
import org.w3c.dom.Attr;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
/**
* More complex interface implementation that tests two elements for tag name
* and attribute name comparability.
* @see DifferenceEngine#compareNodeList(java.util.List, java.util.List, int, DifferenceListener, ElementQualifier)
* @see Diff#overrideElementQualifier(ElementQualifier)
*/
public class ElementNameAndAttributeQualifier extends ElementNameQualifier {
private final ElementSelector selector;
private static final String[] ALL_ATTRIBUTES = {"*"};
private final String[] qualifyingAttrNames;
/**
* No-args constructor: use all attributes from all elements to determine
* whether elements qualify for comparability
*/
public ElementNameAndAttributeQualifier() {
this(ALL_ATTRIBUTES);
}
/**
* Simple constructor for a single qualifying attribute name
* @param attrName the value to use to qualify whether two elements can be
* compared further for differences
*/
public ElementNameAndAttributeQualifier(String attrName) {
this(new String[] {attrName});
}
/**
* Extended constructor for multiple qualifying attribute names
* @param attrNames the array of values to use to qualify whether two
* elements can be compared further for differences
*/
public ElementNameAndAttributeQualifier(String[] attrNames) {
this.qualifyingAttrNames = new String[attrNames.length];
System.arraycopy(attrNames, 0, qualifyingAttrNames, 0,
attrNames.length);
selector = matchesAllAttributes(attrNames)
? ElementSelectors.byNameAndAllAttributes
: ElementSelectors.byNameAndAttributesControlNS(attrNames);
}
/**
* Determine whether two elements qualify for further Difference comparison.
* @param control
* @param test
* @return true if the two elements qualify for further comparison based on
* both the superclass qualification (namespace URI and non- namespaced tag
* name), and the presence of qualifying attributes with the same values;
* false otherwise
*/
public boolean qualifyForComparison(Element control, Element test) {
return selector.canBeCompared(control, test);
}
/**
* Determine whether the qualifying attributes are present in both elements
* and if so whether their values are the same
* @param control
* @param test
* @return true if all qualifying attributes are present with the same
* values, false otherwise
* @deprecated this method is no longer used by this class and is
* only kept for backwards compatibility, overriding
* it won't have any effect anymore
*/
@Deprecated
protected final boolean areAttributesComparable(Element control, Element test) {
String controlValue, testValue;
Attr[] qualifyingAttributes;
NamedNodeMap namedNodeMap = control.getAttributes();
if (matchesAllAttributes(qualifyingAttrNames)) {
qualifyingAttributes = new Attr[namedNodeMap.getLength()];
for (int n=0; n < qualifyingAttributes.length; ++n) {
qualifyingAttributes[n] = (Attr) namedNodeMap.item(n);
}
} else {
qualifyingAttributes = new Attr[qualifyingAttrNames.length];
for (int n=0; n < qualifyingAttrNames.length; ++n) {
qualifyingAttributes[n] = (Attr) namedNodeMap.getNamedItem(qualifyingAttrNames[n]);
}
}
String nsURI, name;
for (int i=0; i < qualifyingAttributes.length; ++i) {
if (qualifyingAttributes[i] != null) {
nsURI = qualifyingAttributes[i].getNamespaceURI();
controlValue = qualifyingAttributes[i].getNodeValue();
name = qualifyingAttributes[i].getName();
} else {
// cannot be "*" case
nsURI = controlValue = "";
name = qualifyingAttrNames[i];
}
if (nsURI == null || nsURI.length() == 0) {
testValue = test.getAttribute(name);
} else {
testValue = test.getAttributeNS(nsURI, qualifyingAttributes[i].getLocalName());
}
if (controlValue == null) {
if (testValue != null) {
return false;
}
} else {
if (!controlValue.equals(testValue)) {
return false;
}
}
}
return true;
}
private static boolean matchesAllAttributes(String[] attributes) {
return Arrays.equals(attributes, ALL_ATTRIBUTES);
}
}