AbstractFormat.java

/*
 * Copyright 2011 Blazebit
 */
package com.blazebit.text;

import java.io.Serializable;
import java.text.FieldPosition;
import java.text.Format;
import java.text.ParsePosition;

/**
 * 
 * @param <T>
 *            The type that should be parsed from a string value.
 * @author Christian Beikov
 * @since 0.1.2
 */
public abstract class AbstractFormat<T extends Serializable> extends Format
		implements SerializableFormat<T> {

	private static final long serialVersionUID = 1L;

	private Class<T> clazz;

	public AbstractFormat(Class<T> clazz) {
		this.clazz = clazz;
	}

	@Override
	public StringBuffer format(Object obj, StringBuffer toAppendTo,
			FieldPosition pos) {
		if (!clazz.isInstance(obj)) {
			throw new IllegalArgumentException(
					"The given object is not of the expected type!");
		}

		return format(obj, toAppendTo);
	}

	@SuppressWarnings("unchecked")
	public StringBuffer format(Object obj, StringBuffer toAppendTo) {
		toAppendTo.append(format((T) obj, (ParserContext) null));
		return toAppendTo;
	}

	@Override
	public String format(T object, ParserContext context) {
		return object.toString();
	}

	@Override
	public Object parseObject(String source, ParsePosition pos) {
		return parse(source, null);
	}
}