Added classes from Xalan to make XSSFImportFromXML compile even without Xalan as a dependency.
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@829781 13f79535-47bb-0310-9956-ffa450edef68
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Ugo Cei
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* $Id$
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*/
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package org.apache.xml.utils;
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/**
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* The class that implements this interface can resolve prefixes to
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* namespaces. Examples would include resolving the meaning of a
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* prefix at a particular point in a document, or mapping the prefixes
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* used in an XPath expression.
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* @xsl.usage advanced
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*/
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public interface PrefixResolver
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{
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/**
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* Given a namespace, get the corrisponding prefix. This assumes that
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* the PrefixResolver holds its own namespace context, or is a namespace
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* context itself.
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*
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* @param prefix The prefix to look up, which may be an empty string ("") for the default Namespace.
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*
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* @return The associated Namespace URI, or null if the prefix
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* is undeclared in this context.
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*/
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String getNamespaceForPrefix(String prefix);
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/**
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* Given a namespace, get the corresponding prefix, based on the context node.
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*
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* @param prefix The prefix to look up, which may be an empty string ("") for the default Namespace.
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* @param context The node context from which to look up the URI.
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*
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* @return The associated Namespace URI as a string, or null if the prefix
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* is undeclared in this context.
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*/
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String getNamespaceForPrefix(String prefix, org.w3c.dom.Node context);
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/**
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* Return the base identifier.
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*
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* @return The base identifier from where relative URIs should be absolutized, or null
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* if the base ID is unknown.
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* <p>
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* CAVEAT: Note that the base URI in an XML document may vary with where
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* you are in the document, if part of the doc's contents were brought in
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* via an external entity reference or if mechanisms such as xml:base have
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* been used. Unless this PrefixResolver is bound to a specific portion of
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* the document, or has been kept up to date via some other mechanism, it
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* may not accurately reflect that context information.
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*/
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public String getBaseIdentifier();
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public boolean handlesNullPrefixes();
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}
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* $Id$
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*/
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package org.apache.xml.utils;
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import org.w3c.dom.NamedNodeMap;
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import org.w3c.dom.Node;
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/**
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* This class implements a generic PrefixResolver that
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* can be used to perform prefix-to-namespace lookup
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* for the XPath object.
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* @xsl.usage general
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*/
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public class PrefixResolverDefault implements PrefixResolver
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{
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public static final java.lang.String S_XMLNAMESPACEURI = "http://www.w3.org/XML/1998/namespace";
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/**
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* The context to resolve the prefix from, if the context
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* is not given.
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*/
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Node m_context;
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/**
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* Construct a PrefixResolverDefault object.
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* @param xpathExpressionContext The context from
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* which XPath expression prefixes will be resolved.
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* Warning: This will not work correctly if xpathExpressionContext
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* is an attribute node.
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*/
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public PrefixResolverDefault(Node xpathExpressionContext)
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{
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m_context = xpathExpressionContext;
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}
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/**
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* Given a namespace, get the corrisponding prefix. This assumes that
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* the PrevixResolver hold's it's own namespace context, or is a namespace
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* context itself.
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* @param prefix Prefix to resolve.
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* @return Namespace that prefix resolves to, or null if prefix
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* is not bound.
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*/
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public String getNamespaceForPrefix(String prefix)
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{
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return getNamespaceForPrefix(prefix, m_context);
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}
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/**
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* Given a namespace, get the corrisponding prefix.
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* Warning: This will not work correctly if namespaceContext
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* is an attribute node.
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* @param prefix Prefix to resolve.
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* @param namespaceContext Node from which to start searching for a
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* xmlns attribute that binds a prefix to a namespace.
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* @return Namespace that prefix resolves to, or null if prefix
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* is not bound.
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*/
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public String getNamespaceForPrefix(String prefix,
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org.w3c.dom.Node namespaceContext)
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{
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Node parent = namespaceContext;
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String namespace = null;
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if (prefix.equals("xml"))
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{
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namespace = S_XMLNAMESPACEURI;
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}
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else
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{
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int type;
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while ((null != parent) && (null == namespace)
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&& (((type = parent.getNodeType()) == Node.ELEMENT_NODE)
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|| (type == Node.ENTITY_REFERENCE_NODE)))
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{
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if (type == Node.ELEMENT_NODE)
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{
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if (parent.getNodeName().indexOf(prefix+":") == 0)
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return parent.getNamespaceURI();
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NamedNodeMap nnm = parent.getAttributes();
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for (int i = 0; i < nnm.getLength(); i++)
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{
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Node attr = nnm.item(i);
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String aname = attr.getNodeName();
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boolean isPrefix = aname.startsWith("xmlns:");
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if (isPrefix || aname.equals("xmlns"))
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{
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int index = aname.indexOf(':');
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String p = isPrefix ? aname.substring(index + 1) : "";
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if (p.equals(prefix))
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{
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namespace = attr.getNodeValue();
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break;
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}
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}
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}
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}
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parent = parent.getParentNode();
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}
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}
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return namespace;
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}
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/**
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* Return the base identifier.
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*
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* @return null
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*/
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public String getBaseIdentifier()
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{
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return null;
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}
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/**
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* @see PrefixResolver#handlesNullPrefixes()
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*/
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public boolean handlesNullPrefixes() {
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return false;
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}
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}
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