org.apache.juneau.svl.vars.CoalesceVar Maven / Gradle / Ivy

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package org.apache.juneau.svl.vars;

import org.apache.juneau.svl.*;

/**
 * A basic variable resolver that returns the first non-null value.
 *
 * 
 * The format for this var is "$CO{arg1[,arg2...]}".
 *
 * 
See Also:

 * 	Simple Variable Language
 * 
 */
public class CoalesceVar extends MultipartResolvingVar {

	/** The name of this variable. */
	public static final String NAME = "CO";

	/**
	 * Constructor.
	 */
	public CoalesceVar() {
		super(NAME);
	}

	@Override
	public String resolve(VarResolverSession session, String arg) throws Exception {
		return arg;
	}
}