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RemoveDirective.java
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RemoveDirective.java
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/*
* Copyright (c) 2013-2024, xembly.org
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met: 1) Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer. 2) Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution. 3) Neither the name of the xembly.org nor
* the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.xembly;
import java.util.Collection;
import java.util.HashSet;
import lombok.EqualsAndHashCode;
import org.w3c.dom.Attr;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
/**
* REMOVE directive.
*
* <p>The class is immutable and thread-safe.
*
* @since 0.2
*/
@EqualsAndHashCode
final class RemoveDirective implements Directive {
@Override
public String toString() {
return "REMOVE";
}
@Override
public Directive.Cursor exec(final Node dom,
final Directive.Cursor cursor, final Directive.Stack stack) {
final Collection<Node> parents = new HashSet<>(cursor.size());
for (final Node node : cursor) {
parents.add(RemoveDirective.parent(node));
}
return new DomCursor(parents);
}
/**
* Convert it to the parent.
* @param node The node
* @return Its parent
*/
@SuppressWarnings("aibolit.P13")
private static Node parent(final Node node) {
final Node parent;
if (node.getNodeType() == Node.ATTRIBUTE_NODE) {
final Attr attr = Attr.class.cast(node);
parent = attr.getOwnerElement();
Element.class.cast(parent).removeAttributeNode(attr);
} else {
parent = node.getParentNode();
if (parent == null) {
throw new IllegalArgumentException(
"You can't delete root element from the XML"
);
}
parent.removeChild(node);
}
return parent;
}
}