/*license*\
XBN-Java: Copyright (C) 2014, Jeff Epstein (aliteralmind __DASH__ github __AT__ yahoo __DOT__ com)
This software is dual-licensed under the:
- Lesser General Public License (LGPL) version 3.0 or, at your option, any later version;
- Apache Software License (ASL) version 2.0.
Either license may be applied at your discretion. More information may be found at
- http://en.wikipedia.org/wiki/Multi-licensing.
The text of both licenses is available in the root directory of this project, under the names "LICENSE_lgpl-3.0.txt" and "LICENSE_asl-2.0.txt". The latest copies may be downloaded at:
- LGPL 3.0: https://www.gnu.org/licenses/lgpl-3.0.txt
- ASL 2.0: http://www.apache.org/licenses/LICENSE-2.0.txt
\*license*/
package com.github.xbn.analyze.alter;
/**
<p>A {@code ValueAlterer} that always changes it to a pre-determined value with an exception: When the <i>value-to-alter</i> is {@code null}, it is instead deleted.</p>
* @since 0.1.0
* @author Copyright (C) 2014, Jeff Epstein ({@code aliteralmind __DASH__ github __AT__ yahoo __DOT__ com}), dual-licensed under the LGPL (version 3.0 or later) or the ASL (version 2.0). See source code for details. <a href="http://xbnjava.aliteralmind.com">{@code http://xbnjava.aliteralmind.com}</a>, <a href="https://github.com/aliteralmind/xbnjava">{@code https://github.com/aliteralmind/xbnjava}</a>
**/
public class SetToStaticValueDelIfNull<V,A> extends AbstractValueAlterer<V,A> {
private A toAltrTo = null;
public SetToStaticValueDelIfNull(A to_alterTo) {
super();
toAltrTo = to_alterTo;
}
public SetToStaticValueDelIfNull(SetToStaticValueDelIfNull<V,A> to_copy) {
super(to_copy);
toAltrTo = to_copy.getStaticValue();
}
public A getAlteredPostResetCheck(V ignored, A to_alter) {
boolean wasDel = (to_alter == null);
declareAltered(Altered.getForBoolean(!wasDel), NeedsToBeDeleted.getForBoolean(wasDel));
return getStaticValue();
}
public A getStaticValue() {
return toAltrTo;
}
/**
* @return <code>(new {@link #SetToStaticValueDelIfNull(SetToStaticValueDelIfNull) SetToStaticValueDelIfNull}<V,A>(this))</code>
*/
public SetToStaticValueDelIfNull<V,A> getObjectCopy() {
return (new SetToStaticValueDelIfNull<V,A>(this));
}
/*
public SetToStaticValueDelIfNull<V,A> extraErrInfo(Object info) {
setExtraErrInfo(info);
return this;
}
*/
public StringBuilder appendToString(StringBuilder to_appendTo) {
return to_appendTo.append(this.getClass().getName()).append(": getStaticValue()=[" + getStaticValue() + "]");
}
}