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/*
* Copyright (c) 2009, Steve Ratcliffe
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
package uk.me.parabola.splitter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
/**
* @author Steve Ratcliffe
*/
public abstract class Element {
protected ArrayList<Tag
> tags
;
private long id
;
private int version
;
public void setId
(long id
) {
this.
id = id
;
}
public long getId
() {
return id
;
}
public int getVersion
() {
return version
;
}
public void setVersion
(int version
) {
this.
version = version
;
}
public static class Tag
{
public final String key, value
;
public Tag
(String key,
String value
) {
this.
key = key
;
this.
value = value
;
}
public String getKey
() {
return key
;
}
public String getValue
() {
return value
;
}
@
Override
public String toString
() {
return key +
"=" + value
;
}
}
public void addTag
(String key,
String value
) {
if (key.
equals("created_by"))
return;
// Most elements are nodes. Most nodes have no tags. Create the tag table lazily
if (tags ==
null)
tags =
new ArrayList<>(4);
tags.
add(new Tag
(key, value
));
}
public boolean hasTags
() {
return tags
!=
null && !tags.
isEmpty();
}
public Iterator<Tag
> tagsIterator
() {
if (tags ==
null)
return Collections.
emptyIterator();
return tags.
iterator();
}
public String getTag
(String key
){
if (tags ==
null)
return null;
for (Tag tag:tags
){
if (key.
equals(tag.
key))
return tag.
value;
}
return null;
}
}