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package org.apache.juneau.swaps;

import org.apache.juneau.*;
import org.apache.juneau.annotation.*;
import org.apache.juneau.swap.*;

/**
 * Built-in object swap implementation class for the {@link Beanp#format() @Beanp(format)} annotation.
 *
 * <ul class='seealso'>
 * 	<li class='link'>{@doc jm.Swaps}
 * 	<li class='extlink'>{@source}
 * </ul>
 */
public class StringFormatSwap extends StringSwap<Object> {

	private final String format;

	/**
	 * Constructor.
	 *
	 * @param format The string format string.
	 */
	public StringFormatSwap(String format) {
		this.format = format;
	}

	@Override /* ObjectSwap */
	public String swap(BeanSession session, Object o) throws Exception {
		return String.format(format, o);
	}

	@Override /* ObjectSwap */
	public Object unswap(BeanSession session, String f, ClassMeta<?> hint) throws Exception {
		return session.convertToType(f, hint);
	}
}
