| /******************************************************************************* |
| * Copyright (c) 2011 Jesper Moller, and others |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Jesper Moller - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.wst.xml.xpath2.api; |
| |
| import java.util.Collection; |
| |
| import javax.xml.namespace.QName; |
| |
| /** |
| * This interface represents a parsed and statically bound XPath2 expression. |
| * |
| * @noimplement This interface is not intended to be implemented by clients. |
| * @since 2.0 |
| */ |
| public interface XPath2Expression { |
| |
| /** |
| * Return a collections of QNames of the names of free variables referenced in the XPath expression. |
| * These variables may be requested during evaluation. |
| * |
| * @return A Collection containing javax.xml.namespacing.QName of free variables |
| */ |
| Collection<QName> getFreeVariables(); |
| |
| /** |
| * Return a collections of the functions used in the XPath2 expression. |
| * |
| * @return A Collection containing javax.xml.namespacing.QName of functions in use. |
| */ |
| Collection<QName> getResolvedFunctions(); |
| |
| /** |
| * Return a collections of the axis used in the XPath2 expression. |
| * |
| * @return A Collection containing Strings with the axis names in use. |
| */ |
| Collection<String> getAxes(); |
| |
| /** |
| * Whether or not the root path is in use in the XPath2 expression. |
| * |
| * @return true if the expression uses / or //, false otherwise. |
| */ |
| boolean isRootPathUsed(); |
| |
| /** |
| * Evaluate the XPath2 expression, using the supplied DynamicContext. |
| * |
| * @param dynamicContext Dynamic context for the expression. |
| * @param contextItems Context item (typically nodes, often one) to evaluate under. |
| * @return A ResultSequence |
| */ |
| ResultSequence evaluate(DynamicContext dynamicContext, Object[] contextItems); |
| } |