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docx4j is a library which helps you to work with the Office Open
XML file format as used in docx
documents, pptx presentations, and xlsx spreadsheets.
package com.topologi.diffx.event.impl;
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import java.io.IOException;
import org.apache.commons.lang.builder.HashCodeBuilder;
import com.topologi.diffx.event.DiffXEvent;
import com.topologi.diffx.xml.XMLWriter;
/**
* A processing instruction event.
*
* @author Christophe Lauret
* @version 4 April 2005
*/
public final class CommentEvent extends DiffXEventBase
implements DiffXEvent {
/**
* The target of the processing instruction.
*/
private final String comment;
/**
* Creates a new comment event.
*
* @throws NullPointerException if any of the argument is null.
*/
public CommentEvent(String comment) throws NullPointerException {
this.comment = comment;
}
/**
* Returns the comment
*/
public String getComment() {
return this.comment;
}
/**
* @see java.lang.Object#hashCode()
*/
// public int hashCode() {
// return this.target.hashCode() + this.data.hashCode();
// }
private int fHashCode;
@Override public int hashCode() {
if ( fHashCode == 0) {
// you pick a hard-coded, randomly chosen, non-zero, odd number
// ideally different for each class
fHashCode = new HashCodeBuilder(17, 37).
append(this.comment).
toHashCode();
}
return fHashCode;
}
/**
* Returns true if the event is a
*
* @param e The event to compare with this event.
*
* @return true if this event is equal to the specified event;
* false otherwise.
*/
public boolean equals(DiffXEvent e) {
if (e.getClass() != this.getClass()) return false;
CommentEvent ce = (CommentEvent)e;
// TODO: handle nulls
return ce.comment.equals(this.comment);
}
/**
* @see Object#toString()
*/
public String toString() {
return "comment: "+this.comment;
}
/**
* @see com.topologi.diffx.xml.XMLWritable#toXML(com.topologi.diffx.xml.XMLWriter)
*/
public void toXML(XMLWriter xml) throws IOException {
xml.writeComment(this.comment);
}
/**
* @see com.topologi.diffx.xml.XMLWritable#toXML(com.topologi.diffx.xml.XMLWriter)
*/
public StringBuffer toXML(StringBuffer xml) throws NullPointerException {
//xml.append("");
return xml;
}
}