/* * Copyright (c) 1997, 2014, 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. */ package com.sun.xml.internal.bind.v2.runtime.unmarshaller; import java.util.Collection; import java.util.Collections; import javax.xml.bind.Unmarshaller; import javax.xml.bind.ValidationEvent; import javax.xml.bind.helpers.ValidationEventImpl; import javax.xml.namespace.QName; import com.sun.xml.internal.bind.v2.runtime.JaxBeanInfo; import org.xml.sax.SAXException; /** * @author Kohsuke Kawaguchi */ public abstract class Loader { // allow derived classes to change it later protected boolean expectText; protected Loader(boolean expectText) { this.expectText = expectText; } protected Loader() { } // // // // Contract // // // /** * Called when the loader is activated, which is when a new start tag is seen * and when the parent designated this loader as the child loader. * *
* The callee may change {@code state.loader} to designate another {@link Loader} * for the processing. It's the responsibility of the callee to forward the startElement * event in such a case. * * @param ea * info about the start tag. never null. */ public void startElement(UnmarshallingContext.State state,TagName ea) throws SAXException { } /** * Called when this loaderis an active loaderand we see a new child start tag. * *
* The callee is expected to designate another loaderas a loaderthat processes * this element, then it should also register a {@link Receiver}. * The designated loaderwill become an active loader. * *
* The default implementation reports an error saying an element is unexpected.
*/
public void childElement(UnmarshallingContext.State state, TagName ea) throws SAXException {
// notify the error, then recover by ignoring the whole element.
reportUnexpectedChildElement(ea, true);
state.setLoader(Discarder.INSTANCE);
state.setReceiver(null);
}
@SuppressWarnings({"StringEquality"})
protected final void reportUnexpectedChildElement(TagName ea, boolean canRecover) throws SAXException {
if (canRecover) {
// this error happens particurly often (when input documents contain a lot of unexpected elements to be ignored),
// so don't bother computing all the messages and etc if we know that
// there's no event handler to receive the error in the end. See #286
UnmarshallingContext context = UnmarshallingContext.getInstance();
if (!context.parent.hasEventHandler() // is somebody listening?
|| !context.shouldErrorBeReported()) // should we report error?
return;
}
if(ea.uri!=ea.uri.intern() || ea.local!=ea.local.intern())
reportError(Messages.UNINTERNED_STRINGS.format(), canRecover );
else
reportError(Messages.UNEXPECTED_ELEMENT.format(ea.uri,ea.local,computeExpectedElements()), canRecover );
}
/**
* Returns a set of tag names expected as possible child elements in this context.
*/
public Collection