Java example source code file (ExcC14NParameterSpec.java)

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Java - Java tags/keywords

arraylist, c14nmethodparameterspec, classcastexception, default, excc14nparameterspec, list, nullpointerexception, string, suppresswarnings, util

The ExcC14NParameterSpec.java Java example source code

/*
 * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
/*
 * $Id: ExcC14NParameterSpec.java,v 1.7 2005/05/13 18:45:42 mullan Exp $
 */
package javax.xml.crypto.dsig.spec;

import javax.xml.crypto.dsig.CanonicalizationMethod;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * Parameters for the W3C Recommendation:
 * <a href="http://www.w3.org/TR/xml-exc-c14n/">
 * Exclusive XML Canonicalization (C14N) algorithm</a>. The
 * parameters include an optional inclusive namespace prefix list. The XML
 * Schema Definition of the Exclusive XML Canonicalization parameters is
 * defined as:
 * <pre>
 * <schema xmlns="http://www.w3.org/2001/XMLSchema"
 *         xmlns:ec="http://www.w3.org/2001/10/xml-exc-c14n#"
 *         targetNamespace="http://www.w3.org/2001/10/xml-exc-c14n#"
 *         version="0.1" elementFormDefault="qualified">
 *
 * <element name="InclusiveNamespaces" type="ec:InclusiveNamespaces"/>
 * <complexType name="InclusiveNamespaces">
 *   <attribute name="PrefixList" type="xsd:string"/>
 * </complexType>
 * </schema>
 * </code>

* * @author Sean Mullan * @author JSR 105 Expert Group * @since 1.6 * @see CanonicalizationMethod */ public final class ExcC14NParameterSpec implements C14NMethodParameterSpec { private List<String> preList; /** * Indicates the default namespace ("#default"). */ public static final String DEFAULT = "#default"; /** * Creates a <code>ExcC14NParameterSpec with an empty prefix * list. */ public ExcC14NParameterSpec() { preList = Collections.emptyList(); } /** * Creates a <code>ExcC14NParameterSpec with the specified list * of prefixes. The list is copied to protect against subsequent * modification. * * @param prefixList the inclusive namespace prefix list. Each entry in * the list is a <code>String that represents a namespace prefix. * @throws NullPointerException if <code>prefixList is * <code>null * @throws ClassCastException if any of the entries in the list are not * of type <code>String */ @SuppressWarnings("rawtypes") public ExcC14NParameterSpec(List prefixList) { if (prefixList == null) { throw new NullPointerException("prefixList cannot be null"); } List<?> copy = new ArrayList<>((List)prefixList); for (int i = 0, size = copy.size(); i < size; i++) { if (!(copy.get(i) instanceof String)) { throw new ClassCastException("not a String"); } } @SuppressWarnings("unchecked") List<String> temp = (List)copy; preList = Collections.unmodifiableList(temp); } /** * Returns the inclusive namespace prefix list. Each entry in the list * is a <code>String that represents a namespace prefix. * * <p>This implementation returns an {@link * java.util.Collections#unmodifiableList unmodifiable list}. * * @return the inclusive namespace prefix list (may be empty but never * <code>null) */ @SuppressWarnings("rawtypes") public List getPrefixList() { return preList; } }

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