XmlPlexusConfigurationOld.java
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.maven.internal.xml;
import org.apache.maven.api.xml.XmlNode;
import org.codehaus.plexus.configuration.DefaultPlexusConfiguration;
import org.codehaus.plexus.configuration.PlexusConfiguration;
/**
* Original implementation of XmlPlexusConfiguration before optimization.
* This class is used for performance benchmarking to compare against the optimized version.
*
* Key characteristics of this implementation:
* - Performs expensive deep copying in constructor
* - Creates all child configurations eagerly during construction
* - Uses non-thread-safe HashMap for child storage
* - Higher memory usage due to duplicated data structures
*/
public class XmlPlexusConfigurationOld extends DefaultPlexusConfiguration {
public static PlexusConfiguration toPlexusConfiguration(XmlNode node) {
return new XmlPlexusConfigurationOld(node);
}
/**
* Constructor that performs deep copying of the entire XML tree.
* This is the performance bottleneck that was optimized in the new implementation.
*/
public XmlPlexusConfigurationOld(XmlNode node) {
super(node.name(), node.value());
// Copy all attributes
node.attributes().forEach(this::setAttribute);
// Recursively create child configurations (expensive deep copying)
node.children().forEach(c -> this.addChild(new XmlPlexusConfigurationOld(c)));
}
@Override
public String toString() {
final StringBuilder buf = new StringBuilder().append('<').append(getName());
for (final String a : getAttributeNames()) {
buf.append(' ').append(a).append("=\"").append(getAttribute(a)).append('"');
}
if (getChildCount() > 0) {
buf.append('>');
for (int i = 0, size = getChildCount(); i < size; i++) {
buf.append(getChild(i));
}
buf.append("</").append(getName()).append('>');
} else if (null != getValue()) {
buf.append('>').append(getValue()).append("</").append(getName()).append('>');
} else {
buf.append("/>");
}
return buf.append('\n').toString();
}
}