spring AbstractXMLEventReader 源码
spring AbstractXMLEventReader 代码
文件路径：/spring-core/src/main/java/org/springframework/util/xml/AbstractXMLEventReader.java
/*
* Copyright 2002-2018 the original author or authors.
*
* 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
*
* https://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 org.springframework.util.xml;
import java.util.NoSuchElementException;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLStreamException;
import org.springframework.util.ClassUtils;
/**
* Abstract base class for {@code XMLEventReader}s.
*
* @author Arjen Poutsma
* @author Juergen Hoeller
* @since 5.0
*/
abstract class AbstractXMLEventReader implements XMLEventReader {
private boolean closed;
@Override
public Object next() {
try {
return nextEvent();
}
catch (XMLStreamException ex) {
throw new NoSuchElementException(ex.getMessage());
}
}
@Override
public void remove() {
throw new UnsupportedOperationException(
"remove not supported on " + ClassUtils.getShortName(getClass()));
}
/**
* This implementation throws an {@code IllegalArgumentException} for any property.
* @throws IllegalArgumentException when called
*/
@Override
public Object getProperty(String name) throws IllegalArgumentException {
throw new IllegalArgumentException("Property not supported: [" + name + "]");
}
@Override
public void close() {
this.closed = true;
}
/**
* Check if the reader is closed, and throws a {@code XMLStreamException} if so.
* @throws XMLStreamException if the reader is closed
* @see #close()
*/
protected void checkIfClosed() throws XMLStreamException {
if (this.closed) {
throw new XMLStreamException("XMLEventReader has been closed");
}
}
}
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