/* * Copyright (c) 1997, 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. */ package com.sun.tools.internal.xjc.reader.xmlschema.parser; import java.util.HashSet; import java.util.Set; import java.util.Stack; import javax.xml.namespace.QName; import com.sun.tools.internal.xjc.reader.Const; import com.sun.xml.internal.bind.v2.WellKnownNamespace; import org.xml.sax.Attributes; import org.xml.sax.ErrorHandler; import org.xml.sax.Locator; import org.xml.sax.SAXException; import org.xml.sax.SAXParseException; import org.xml.sax.helpers.XMLFilterImpl; /** * Checks if binding declarations are placed where they are allowed. * *
* For example, if a <jaxb:property> customization is given under * the <xs:simpleContent> element, this class raises an error. * *
* our main checkpoint of misplaced customizations are in BGMBuilder. * There, we mark a customization whenever we use it. At the end of the * day, we look for unmarked customizations and raise errors for them. * *
* Between this approach and the JAXB spec 1.0 is a problem that * the spec allows/prohibits customizations at schema element level, * while BGMBuilder and XSOM works on schema component levels. * *
* For example, a property customization is allowed on a complex type * schema component, but it's only allowed on the <complexType> * element. The spec team informed us that they would consider resolving * this discrepancy in favor of RI, but meanwhile we need to detect * errors correctly. * *
* This filter is implemented for this purpose. * * *
* For simple types, customizations are allowed only under the <xs:simpleType> * element, and for complex types they are allowed only under the * <xs:cimplexType> element. * *
* So the bottom line is that it would be suffice if we just make sure
* that no customization will be attached under other elements of
* simple types and complex types. Those are:
*
* - simpleType/restriction
* - list
* - union
* - complexType/(simple or complex)Content
* - complexType/(simple or complex)Content/(restriction of extension)
*
* @author
* Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
*/
public class CustomizationContextChecker extends XMLFilterImpl {
/** Keep names of all the ancestor elements. */
private final Stack