Package net.shibboleth.metadata.dom

Class XPathItemSelectionStrategy

java.lang.Object

net.shibboleth.metadata.dom.XPathItemSelectionStrategy

All Implemented Interfaces:

Predicate<Item<Element>>

@ThreadSafe
public class XPathItemSelectionStrategy
extends Object
implements Predicate<Item<Element>>

Item selection strategy which selects items on the basis of a boolean XPath expression.

Field Summary

Fields

Modifier and Type	Field	Description
private final XPathExpression	compiledExpression	Compiled form of the expression.
private static final org.slf4j.Logger	LOG	Class logger.

Constructor Summary

Constructors

Constructor	Description
XPathItemSelectionStrategy(String expression, NamespaceContext context)	Constructor.

Method Summary

Modifier and Type	Method	Description
boolean	test(Item<Element> item)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.function.Predicate

and, negate, or

Field Details

LOG

@Nonnull
private static final org.slf4j.Logger LOG

Class logger.

compiledExpression

@Nonnull
private final XPathExpression compiledExpression

Compiled form of the expression. XPathExpression objects are reusable but are not thread-safe, so access to the compiled expression must be protected.

Constructor Details

XPathItemSelectionStrategy

public XPathItemSelectionStrategy(@Nonnull @NotEmpty
 String expression,
 @Nullable
 NamespaceContext context)
                           throws XPathExpressionException

Constructor.

Parameters:

expression - XPath expression to execute.

context - Namespace context to use for the expression, expressed as a NamespaceContext.

Throws:

XPathExpressionException - if there is a problem compiling the expression

Method Details

test

public boolean test(Item<Element> item)

Specified by:

test in interface Predicate<Item<Element>>