alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Java example source code file (Util.java)

This example Java source code file (Util.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

arraylist, derivation, hashset, iterator, set, util, xscomplextype, xstype

The Util.java Java example source code

/*
 * Copyright (c) 1997, 2010, 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.xsom.impl;

import com.sun.xml.internal.xsom.XSComplexType;
import com.sun.xml.internal.xsom.XSType;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

/**
 *
 *
 * @author
 *     Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
 */
class Util {
    private static XSType[] listDirectSubstitutables( XSType _this ) {
        ArrayList r = new ArrayList();

        // TODO: handle @block
        Iterator itr = ((SchemaImpl)_this.getOwnerSchema()).parent.iterateTypes();
        while( itr.hasNext() ) {
            XSType t = (XSType)itr.next();
            if( t.getBaseType()==_this )
                r.add(t);
        }
        return (XSType[]) r.toArray(new XSType[r.size()]);
    }

    public static XSType[] listSubstitutables( XSType _this ) {
        Set substitables = new HashSet();
        buildSubstitutables( _this, substitables );
        return (XSType[]) substitables.toArray(new XSType[substitables.size()]);
    }

    public static void buildSubstitutables( XSType _this, Set substitutables ) {
        if( _this.isLocal() )    return;
        buildSubstitutables( _this, _this, substitutables );
    }

    private static void buildSubstitutables( XSType head, XSType _this, Set substitutables ) {
        if(!isSubstitutable(head,_this))
            return;    // no derived type of _this can substitute head.

        if(substitutables.add(_this)) {
            XSType[] child = listDirectSubstitutables(_this);
            for( int i=0; i<child.length; i++ )
                buildSubstitutables( head, child[i], substitutables );
        }
    }

    /**
     * Implements
     * <code>Validation Rule: Schema-Validity Assessment (Element) 1.2.1.2.4
     */
    private static boolean isSubstitutable( XSType _base, XSType derived ) {
        // too ugly to the point that it's almost unbearable.
        // I mean, it's not even transitive. Thus we end up calling this method
        // for each candidate
        if( _base.isComplexType() ) {
            XSComplexType base = _base.asComplexType();

            for( ; base!=derived; derived=derived.getBaseType() ) {
                if( base.isSubstitutionProhibited( derived.getDerivationMethod() ) )
                    return false;    // Type Derivation OK (Complex)-1
            }
            return true;
        } else {
            // simple type don't have any @block
            return true;
        }
    }

}

Other Java examples (source code examples)

Here is a short list of links related to this Java Util.java source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.