IntegerTransformer.java

package silentium.commons.configuration.transformers;

import silentium.commons.configuration.PropertyTransformer;
import silentium.commons.configuration.TransformationException;

import java.lang.reflect.Field;

/**
 * Transfomrs string to integer. Integer can be represented both as decimal or hex value.
 *
 * @author SoulKeeper
 */
public class IntegerTransformer implements PropertyTransformer<Integer> {
	/**
	 * Shared instance of this transformer. It's thread-safe so no need of multiple instances
	 */
	public static final IntegerTransformer SHARED_INSTANCE = new IntegerTransformer();

	/**
	 * Transforms value to integer
	 *
	 * @param value value that will be transformed
	 * @param field value will be assigned to this field
	 * @return Integer object that represents value
	 * @throws TransformationException if something went wrong
	 */
	@Override
	public Integer transform(final String value, final Field field) throws TransformationException {
		try {
			return Integer.decode(value);
		} catch (Exception e) {
			throw new TransformationException(e);
		}
	}
}