Smack/smack-experimental/src/main/java/org/jivesoftware/smackx/file_metadata/element/child/LengthElement.java

78 lines
2.2 KiB
Java

/**
*
* Copyright 2020 Paul Schaub
*
* 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 org.jivesoftware.smackx.file_metadata.element.child;
import org.jivesoftware.smack.packet.NamedElement;
import org.jivesoftware.smack.packet.XmlEnvironment;
import org.jivesoftware.smack.util.EqualsUtil;
import org.jivesoftware.smack.util.HashCode;
import org.jivesoftware.smack.util.XmlStringBuilder;
/**
* Length of an audio or video file, in milliseconds.
*/
public class LengthElement implements NamedElement {
public static final String ELEMENT = "length";
private final long length;
public LengthElement(long length) {
if (length < 0) {
throw new IllegalArgumentException("Length cannot be negative.");
}
this.length = length;
}
/**
* Return the length of the audio or video file.
*
* @return length in milliseconds
*/
public long getLength() {
return length;
}
@Override
public XmlStringBuilder toXML(XmlEnvironment xmlEnvironment) {
return new XmlStringBuilder(this)
.rightAngleBracket()
.append(Long.toString(getLength()))
.closeElement(this);
}
@Override
public String getElementName() {
return ELEMENT;
}
@Override
public int hashCode() {
return HashCode.builder()
.append(getElementName())
.append(getLength())
.build();
}
@Override
public boolean equals(Object obj) {
return EqualsUtil.equals(this, obj, (equalsBuilder, other) ->
equalsBuilder.append(getElementName(), other.getElementName())
.append(getLength(), other.getLength()));
}
}