/** Evaluate an XPath expression as a boolean value. */
public static boolean evaluateAsBoolean(
PropertyContext propertyContext,
List<Item> contextItems,
int contextPosition,
String xpathString,
Map<String, String> prefixToURIMap,
Map<String, ValueRepresentation> variableToValueMap,
FunctionLibrary functionLibrary,
FunctionContext functionContext,
String baseURI,
LocationData locationData) {
final PooledXPathExpression xpathExpression =
XPathCache.getXPathExpression(
propertyContext,
contextItems,
contextPosition,
"string(subsequence(" + xpathString + ", 1, 1))",
prefixToURIMap,
variableToValueMap,
functionLibrary,
baseURI,
false,
false,
locationData);
try {
return xpathExpression.evaluateAsBoolean(functionContext);
} catch (XPathException e) {
throw handleXPathException(e, xpathString, "evaluating XPath expression", locationData);
} finally {
if (xpathExpression != null) xpathExpression.returnToPool();
}
}
/**
* Evaluate an XPath expression on the document as an attribute value template, and return its
* string value.
*/
public static String evaluateAsAvt(
PropertyContext propertyContext,
List<Item> contextItems,
int contextPosition,
String xpathString,
Map<String, String> prefixToURIMap,
Map<String, ValueRepresentation> variableToValueMap,
FunctionLibrary functionLibrary,
FunctionContext functionContext,
String baseURI,
LocationData locationData) {
final PooledXPathExpression xpathExpression =
XPathCache.getXPathExpression(
propertyContext,
contextItems,
contextPosition,
xpathString,
prefixToURIMap,
variableToValueMap,
functionLibrary,
baseURI,
true,
false,
locationData);
try {
final Object result = xpathExpression.evaluateSingleKeepNodeInfo(functionContext);
return (result != null) ? result.toString() : null;
} catch (XPathException e) {
throw handleXPathException(e, xpathString, "evaluating XPath expression", locationData);
} finally {
if (xpathExpression != null) xpathExpression.returnToPool();
}
}