| /* |
| * Copyright 2005 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| /* |
| * Copyright 2005 Sun Microsystems, Inc. All rights reserved. |
| */ |
| /* |
| * $Id$ |
| */ |
| package javax.xml.crypto.dsig.spec; |
| |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * The XML Schema Definition of the <code>XPath</code> element as defined in the |
| * <a href="http://www.w3.org/TR/xmldsig-filter2"> |
| * W3C Recommendation for XML-Signature XPath Filter 2.0</a>: |
| * <pre><code> |
| * <schema xmlns="http://www.w3.org/2001/XMLSchema" |
| * xmlns:xf="http://www.w3.org/2002/06/xmldsig-filter2" |
| * targetNamespace="http://www.w3.org/2002/06/xmldsig-filter2" |
| * version="0.1" elementFormDefault="qualified"> |
| * |
| * <element name="XPath" |
| * type="xf:XPathType"/> |
| * |
| * <complexType name="XPathType"> |
| * <simpleContent> |
| * <extension base="string"> |
| * <attribute name="Filter"> |
| * <simpleType> |
| * <restriction base="string"> |
| * <enumeration value="intersect"/> |
| * <enumeration value="subtract"/> |
| * <enumeration value="union"/> |
| * </restriction> |
| * </simpleType> |
| * </attribute> |
| * </extension> |
| * </simpleContent> |
| * </complexType> |
| * </code></pre> |
| * |
| * @author Sean Mullan |
| * @author JSR 105 Expert Group |
| * @see XPathFilter2ParameterSpec |
| */ |
| public class XPathType { |
| |
| /** |
| * Represents the filter set operation. |
| */ |
| public static class Filter { |
| private final String operation; |
| |
| private Filter(String operation) { |
| this.operation = operation; |
| } |
| |
| /** |
| * Returns the string form of the operation. |
| * |
| * @return the string form of the operation |
| */ |
| public String toString() { |
| return operation; |
| } |
| |
| /** |
| * The intersect filter operation. |
| */ |
| public static final Filter INTERSECT = new Filter("intersect"); |
| |
| /** |
| * The subtract filter operation. |
| */ |
| public static final Filter SUBTRACT = new Filter("subtract"); |
| |
| /** |
| * The union filter operation. |
| */ |
| public static final Filter UNION = new Filter("union"); |
| } |
| |
| private final String expression; |
| private final Filter filter; |
| private Map nsMap; |
| |
| /** |
| * Creates an <code>XPathType</code> instance with the specified XPath |
| * expression and filter. |
| * |
| * @param expression the XPath expression to be evaluated |
| * @param filter the filter operation ({@link Filter#INTERSECT}, |
| * {@link Filter#SUBTRACT}, or {@link Filter#UNION}) |
| * @throws NullPointerException if <code>expression</code> or |
| * <code>filter</code> is <code>null</code> |
| */ |
| public XPathType(String expression, Filter filter) { |
| if (expression == null) { |
| throw new NullPointerException("expression cannot be null"); |
| } |
| if (filter == null) { |
| throw new NullPointerException("filter cannot be null"); |
| } |
| this.expression = expression; |
| this.filter = filter; |
| this.nsMap = Collections.EMPTY_MAP; |
| } |
| |
| /** |
| * Creates an <code>XPathType</code> instance with the specified XPath |
| * expression, filter, and namespace map. The map is copied to protect |
| * against subsequent modification. |
| * |
| * @param expression the XPath expression to be evaluated |
| * @param filter the filter operation ({@link Filter#INTERSECT}, |
| * {@link Filter#SUBTRACT}, or {@link Filter#UNION}) |
| * @param namespaceMap the map of namespace prefixes. Each key is a |
| * namespace prefix <code>String</code> that maps to a corresponding |
| * namespace URI <code>String</code>. |
| * @throws NullPointerException if <code>expression</code>, |
| * <code>filter</code> or <code>namespaceMap</code> are |
| * <code>null</code> |
| * @throws ClassCastException if any of the map's keys or entries are |
| * not of type <code>String</code> |
| */ |
| public XPathType(String expression, Filter filter, Map namespaceMap) { |
| this(expression, filter); |
| if (namespaceMap == null) { |
| throw new NullPointerException("namespaceMap cannot be null"); |
| } |
| nsMap = new HashMap(namespaceMap); |
| Iterator entries = nsMap.entrySet().iterator(); |
| while (entries.hasNext()) { |
| Map.Entry me = (Map.Entry) entries.next(); |
| if (!(me.getKey() instanceof String) || |
| !(me.getValue() instanceof String)) { |
| throw new ClassCastException("not a String"); |
| } |
| } |
| nsMap = Collections.unmodifiableMap(nsMap); |
| } |
| |
| /** |
| * Returns the XPath expression to be evaluated. |
| * |
| * @return the XPath expression to be evaluated |
| */ |
| public String getExpression() { |
| return expression; |
| } |
| |
| /** |
| * Returns the filter operation. |
| * |
| * @return the filter operation |
| */ |
| public Filter getFilter() { |
| return filter; |
| } |
| |
| /** |
| * Returns a map of namespace prefixes. Each key is a namespace prefix |
| * <code>String</code> that maps to a corresponding namespace URI |
| * <code>String</code>. |
| * <p> |
| * This implementation returns an {@link Collections#unmodifiableMap |
| * unmodifiable map}. |
| * |
| * @return a <code>Map</code> of namespace prefixes to namespace URIs |
| * (may be empty, but never <code>null</code>) |
| */ |
| public Map getNamespaceMap() { |
| return nsMap; |
| } |
| } |