package com.btaz.util.xml.model.querypath.matcher;
import com.btaz.util.xml.model.Element;
import com.btaz.util.xml.model.Node;
import com.btaz.util.xml.model.querypath.MatchType;
/**
* User: msundell
*/
public class ElementAttributeValueMatcher implements PathQueryMatcher {
private final int level;
private final String elementName;
private final String attributeName;
private final String attributeValue;
/**
* Initialize a new object.
* @param level defines on what level in the path query this matcher was created for
* @param elementName element name
* @param attributeName attribute name
* @param attributeValue attribute value
*/
public ElementAttributeValueMatcher(int level, String elementName, String attributeName, String attributeValue) {
this.level = level;
this.elementName = elementName;
this.attributeName = attributeName;
this.attributeValue = attributeValue;
}
/**
* Match method. This method have to make a match decision based on the information provided.
* @param level XML tree level
* @param node current XML tree node
* @return {@code MatchType} defining match status
*/
@Override
public MatchType match(int level, Node node) {
if(! (node instanceof Element)) {
return MatchType.NOT_A_MATCH;
}
Element element = (Element) node;
if(this.level != level) {
return MatchType.NOT_A_MATCH;
} else if(element.getName().equals(elementName) && element.hasAttribute(attributeName)
&& element.attributeValue(attributeName).equals(attributeValue)) {
return MatchType.NODE_MATCH;
}
return MatchType.NOT_A_MATCH;
}
@Override
public String toString() {
return elementName + "[@" + attributeName + "='" + attributeValue + "']";
}
}