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The AWS Java SDK for Amazon S3 module holds the client classes that are used for communicating with Amazon Simple Storage Service
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/*
* Copyright 2010-2024 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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.amazonaws.services.s3.model.transform;
import java.util.LinkedList;
import org.xml.sax.Attributes;
import org.xml.sax.helpers.DefaultHandler;
/**
* Package private abstract base for all handlers here; adds tracking of the
* current context so each handler doesn't have to manage it on its own.
*/
abstract class AbstractHandler extends DefaultHandler {
private final StringBuilder text = new StringBuilder();
private final LinkedList context = new LinkedList();
@Override
public final void startElement(
String uri,
String name,
String qName,
Attributes attrs) {
text.setLength(0);
doStartElement(uri, name, qName, attrs);
context.add(name);
}
protected abstract void doStartElement(
String uri,
String name,
String qName,
Attributes attrs);
@Override
public final void endElement(String uri, String name, String qName) {
context.removeLast();
doEndElement(uri, name, qName);
}
protected abstract void doEndElement(
String uri,
String name,
String qName);
@Override
public final void characters(char ch[], int start, int length) {
text.append(ch, start, length);
}
protected final String getText() {
return text.toString();
}
protected final boolean atTopLevel() {
return context.isEmpty();
}
/**
* @param path
* Path to test
* @return True if the path provided is the same as the current context. False otherwise
*/
protected final boolean in(String... path) {
if (path.length != context.size()) {
return false;
}
int i = 0;
for (String element : context) {
String pattern = path[i];
if (!(pattern.equals("*") || pattern.equals(element))) {
return false;
}
i += 1;
}
return true;
}
}
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