| /* |
| * Copyright 2006 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package com.google.gwt.dev.util.xml; |
| |
| import com.google.gwt.core.ext.UnableToCompleteException; |
| |
| import java.lang.reflect.Method; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * Abstract base class for reflection-based push-parsing of XML. |
| */ |
| public abstract class Schema { |
| |
| private final Map<Class<?>, AttributeConverter> convertersByType = |
| new HashMap<Class<?>, AttributeConverter>(); |
| |
| private Schema parent; |
| |
| private int lineNumber; |
| |
| /** |
| * Finds the most recent converter in the schema chain that can convert the |
| * specified type. |
| */ |
| public AttributeConverter getAttributeConverter(Class<?> type) { |
| AttributeConverter converter = convertersByType.get(type); |
| if (converter != null) { |
| return converter; |
| } else if (parent != null) { |
| return parent.getAttributeConverter(type); |
| } |
| |
| throw new IllegalStateException( |
| "Unable to find an attribute converter for type " + type.getName()); |
| } |
| |
| public int getLineNumber() { |
| return lineNumber; |
| } |
| |
| public void onBadAttributeValue(int line, String elem, String attr, |
| String value, Class<?> paramType) throws UnableToCompleteException { |
| if (parent != null) { |
| parent.onBadAttributeValue(line, elem, attr, value, paramType); |
| } |
| } |
| |
| public void onHandlerException(int line, String elem, Method method, |
| Throwable e) throws UnableToCompleteException { |
| if (parent != null) { |
| parent.onHandlerException(line, elem, method, e); |
| } |
| } |
| |
| public void onMissingAttribute(int line, String elem, String attr) |
| throws UnableToCompleteException { |
| if (parent != null) { |
| parent.onMissingAttribute(line, elem, attr); |
| } |
| } |
| |
| public void onUnexpectedAttribute(int line, String elem, String attr, |
| String value) throws UnableToCompleteException { |
| if (parent != null) { |
| parent.onUnexpectedAttribute(line, elem, attr, value); |
| } |
| } |
| |
| public void onUnexpectedChild(int line, String elem) |
| throws UnableToCompleteException { |
| if (parent != null) { |
| parent.onUnexpectedChild(line, elem); |
| } |
| } |
| |
| public void onUnexpectedElement(int line, String elem) |
| throws UnableToCompleteException { |
| if (parent != null) { |
| parent.onUnexpectedElement(line, elem); |
| } |
| } |
| |
| public void registerAttributeConverter(Class<?> type, |
| AttributeConverter converter) { |
| convertersByType.put(type, converter); |
| } |
| |
| public void setLineNumber(int lineNumber) { |
| this.lineNumber = lineNumber; |
| } |
| |
| public void setParent(Schema parent) { |
| this.parent = parent; |
| } |
| } |