org.codehaus.groovy.grails.commons.metaclass.CreateDynamicMethod.java Source code

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Here is the source code for org.codehaus.groovy.grails.commons.metaclass.CreateDynamicMethod.java

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/*
 * Copyright 2004-2005 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.codehaus.groovy.grails.commons.metaclass;

import java.util.regex.Pattern;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * A dynamic static method that is a factory method for creating new instances.
 *
 * eg. Account.create()
 *
 * @author Graeme Rocher
 */
public class CreateDynamicMethod extends AbstractStaticMethodInvocation {

    public static final String METHOD_NAME = "create";
    private static final Pattern METHOD_PATTERN = Pattern.compile("^create$");
    private static final Log LOG = LogFactory.getLog(CreateDynamicMethod.class);

    public CreateDynamicMethod() {
        setPattern(METHOD_PATTERN);
    }

    @SuppressWarnings("rawtypes")
    @Override
    public Object invoke(Class clazz, String methodName, Object[] arguments) {
        try {
            return clazz.newInstance();
        } catch (InstantiationException e) {
            LOG.warn("Unable to instantiate class [" + clazz.getName() + "]: " + e.getMessage());
        } catch (IllegalAccessException e) {
            LOG.warn("Illegal access instantiating class [" + clazz.getName() + "]: " + e.getMessage());
        }
        return null;
    }
}