Function.java

package org.maltparser.core.feature.function;

import org.maltparser.core.exception.MaltChainedException;

/**
 *
 *
 * @author Johan Hall
 */
public interface Function {

    /**
     * Initialize the feature function
     *
     * @param arguments an array of arguments with the type returned by
     * getParameterTypes()
     * @throws MaltChainedException
     */
    public void initialize(Object[] arguments) throws MaltChainedException;

    /**
     * Returns an array of class types used by the feature extraction system to
     * invoke initialize with correct arguments.
     *
     * @return an array of class types
     */
    public Class<?>[] getParameterTypes();

    /**
     * Cause the feature function to update the feature value.
     *
     * @throws MaltChainedException
     */
    public void update() throws MaltChainedException;
}