101 lines
3.6 KiB
Java
101 lines
3.6 KiB
Java
/*
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* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.xml.internal.xsom.impl;
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import com.sun.xml.internal.xsom.XSComplexType;
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import com.sun.xml.internal.xsom.XSType;
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import java.util.ArrayList;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.Set;
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/**
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*
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*
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* @author
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* Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
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*/
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class Util {
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private static XSType[] listDirectSubstitutables( XSType _this ) {
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ArrayList r = new ArrayList();
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// TODO: handle @block
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Iterator itr = ((SchemaImpl)_this.getOwnerSchema()).parent.iterateTypes();
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while( itr.hasNext() ) {
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XSType t = (XSType)itr.next();
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if( t.getBaseType()==_this )
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r.add(t);
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}
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return (XSType[]) r.toArray(new XSType[r.size()]);
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}
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public static XSType[] listSubstitutables( XSType _this ) {
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Set substitables = new HashSet();
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buildSubstitutables( _this, substitables );
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return (XSType[]) substitables.toArray(new XSType[substitables.size()]);
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}
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public static void buildSubstitutables( XSType _this, Set substitutables ) {
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if( _this.isLocal() ) return;
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buildSubstitutables( _this, _this, substitutables );
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}
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private static void buildSubstitutables( XSType head, XSType _this, Set substitutables ) {
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if(!isSubstitutable(head,_this))
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return; // no derived type of _this can substitute head.
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if(substitutables.add(_this)) {
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XSType[] child = listDirectSubstitutables(_this);
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for( int i=0; i<child.length; i++ )
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buildSubstitutables( head, child[i], substitutables );
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}
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}
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/**
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* Implements
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* <code>Validation Rule: Schema-Validity Assessment (Element) 1.2.1.2.4</code>
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*/
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private static boolean isSubstitutable( XSType _base, XSType derived ) {
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// too ugly to the point that it's almost unbearable.
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// I mean, it's not even transitive. Thus we end up calling this method
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// for each candidate
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if( _base.isComplexType() ) {
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XSComplexType base = _base.asComplexType();
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for( ; base!=derived; derived=derived.getBaseType() ) {
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if( base.isSubstitutionProhibited( derived.getDerivationMethod() ) )
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return false; // Type Derivation OK (Complex)-1
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}
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return true;
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} else {
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// simple type don't have any @block
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return true;
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}
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}
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}
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