| /* |
| * Copyright (c) 1997, 2015, 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; |
| |
| import com.sun.xml.internal.xsom.visitor.XSTermFunction; |
| import com.sun.xml.internal.xsom.visitor.XSTermVisitor; |
| import com.sun.xml.internal.xsom.visitor.XSTermFunctionWithParam; |
| |
| /** |
| * A component that can be referenced from {@link XSParticle} |
| * |
| * This interface provides a set of type check functions (<code>isXXX</code>), |
| * which are essentially: |
| * |
| * <pre> |
| * boolean isXXX() { |
| * return this instanceof XXX; |
| * } |
| * </pre> |
| * |
| * and a set of cast functions (<code>asXXX</code>), which are |
| * essentially: |
| * |
| * <pre> |
| * XXX asXXX() { |
| * if(isXXX()) return (XXX)this; |
| * else return null; |
| * } |
| * </pre> |
| */ |
| public interface XSTerm extends XSComponent |
| { |
| void visit( XSTermVisitor visitor ); |
| <T> T apply( XSTermFunction<T> function ); |
| <T,P> T apply( XSTermFunctionWithParam<T,P> function, P param ); |
| |
| // cast functions |
| boolean isWildcard(); |
| boolean isModelGroupDecl(); |
| boolean isModelGroup(); |
| boolean isElementDecl(); |
| |
| XSWildcard asWildcard(); |
| XSModelGroupDecl asModelGroupDecl(); |
| XSModelGroup asModelGroup(); |
| XSElementDecl asElementDecl(); |
| } |