| /* Copyright 2004 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. |
| */ |
| |
| package org.apache.xmlbeans.impl.values; |
| |
| import org.apache.xmlbeans.impl.common.PrefixResolver; |
| |
| import org.apache.xmlbeans.XmlObject; |
| import org.apache.xmlbeans.XmlCursor; |
| |
| import java.util.ArrayList; |
| import java.util.Map; |
| import java.lang.reflect.Proxy; |
| import java.lang.ref.SoftReference; |
| |
| import org.apache.xmlbeans.xml.stream.StartElement; |
| |
| public class NamespaceContext implements PrefixResolver |
| { |
| private static final int TYPE_STORE = 1; |
| private static final int XML_OBJECT = 2; |
| private static final int MAP = 3; |
| private static final int START_ELEMENT = 4; |
| private static final int RESOLVER = 5; |
| |
| private Object _obj; |
| private int _code; |
| |
| public NamespaceContext(Map prefixToUriMap) |
| { |
| _code = MAP; |
| _obj = prefixToUriMap; |
| } |
| |
| public NamespaceContext(TypeStore typeStore) |
| { |
| _code = TYPE_STORE; |
| _obj = typeStore; |
| } |
| |
| public NamespaceContext(XmlObject xmlObject) |
| { |
| _code = XML_OBJECT; |
| _obj = xmlObject; |
| } |
| |
| public NamespaceContext(StartElement start) |
| { |
| _code = START_ELEMENT; |
| _obj = start; |
| } |
| |
| public NamespaceContext(PrefixResolver resolver) |
| { |
| _code = RESOLVER; |
| _obj = resolver; |
| } |
| |
| /** |
| * Stack management if (heaven help us) we ever need to do |
| * nested compilation of schema type system. |
| */ |
| private static final class NamespaceContextStack |
| { |
| NamespaceContext current; |
| ArrayList stack = new ArrayList(); |
| final void push(NamespaceContext next) |
| { |
| stack.add(current); |
| current = next; |
| } |
| final void pop() |
| { |
| current = (NamespaceContext)stack.get(stack.size() - 1); |
| stack.remove(stack.size() - 1); |
| } |
| } |
| |
| private static ThreadLocal tl_namespaceContextStack = new ThreadLocal(); |
| |
| public static void clearThreadLocals() { |
| tl_namespaceContextStack.remove(); |
| } |
| |
| private static NamespaceContextStack getNamespaceContextStack() |
| { |
| NamespaceContextStack namespaceContextStack = (NamespaceContextStack) tl_namespaceContextStack.get(); |
| if (namespaceContextStack==null) |
| { |
| namespaceContextStack = new NamespaceContextStack(); |
| tl_namespaceContextStack.set(namespaceContextStack); |
| } |
| return namespaceContextStack; |
| } |
| |
| public static void push(NamespaceContext next) |
| { |
| getNamespaceContextStack().push(next); |
| } |
| |
| public static void pop() |
| { |
| NamespaceContextStack nsContextStack = getNamespaceContextStack(); |
| nsContextStack.pop(); |
| |
| if (nsContextStack.stack.size()==0) |
| tl_namespaceContextStack.set(null); |
| } |
| |
| public static PrefixResolver getCurrent() |
| { |
| return getNamespaceContextStack().current; |
| } |
| |
| public String getNamespaceForPrefix(String prefix) |
| { |
| if (prefix != null && prefix.equals("xml")) |
| return "http://www.w3.org/XML/1998/namespace"; |
| |
| switch (_code) |
| { |
| case XML_OBJECT: |
| { |
| TypeStoreUser impl; |
| Object obj = _obj; |
| if (Proxy.isProxyClass(obj.getClass())) |
| obj = Proxy.getInvocationHandler(obj); |
| |
| if (obj instanceof TypeStoreUser) |
| return ((TypeStoreUser)obj).get_store().getNamespaceForPrefix(prefix); |
| |
| XmlCursor cur = ((XmlObject)_obj).newCursor(); |
| if (cur != null) |
| { |
| if (cur.currentTokenType() == XmlCursor.TokenType.ATTR) |
| cur.toParent(); |
| try { return cur.namespaceForPrefix(prefix); } |
| finally { cur.dispose(); } |
| } |
| } |
| |
| case MAP: |
| return (String)((Map)_obj).get(prefix); |
| |
| case TYPE_STORE: |
| return ((TypeStore)_obj).getNamespaceForPrefix(prefix); |
| |
| case START_ELEMENT: |
| return ((StartElement)_obj).getNamespaceUri(prefix); |
| |
| case RESOLVER: |
| return ((PrefixResolver)_obj).getNamespaceForPrefix(prefix); |
| |
| default: |
| assert false : "Improperly initialized NamespaceContext."; |
| return null; |
| } |
| } |
| } |