geb.buildadapter.BuildAdapterFactory.groovy Maven / Gradle / Ivy

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Geb (pronounced "jeb") is a browser automation solution. It brings together the power of WebDriver, the elegance of jQuery content selection, the robustness of Page Object modelling and the expressiveness of the Groovy language.

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/* 
 * Copyright 2011 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 geb.buildadapter

import geb.BuildAdapter

/**
 * Loads the {@link BuildAdapter} implementation class to be used.
 */
class BuildAdapterFactory {
	
	/**
	 * The system property used to specify the {@link geb.BuildAdapter} implementation ({@code geb.build.adapter}).
	 */
	static public final String ADAPTER_PROPERTY_NAME = "geb.build.adapter"
	
	/**
	 * The build adapter to use.
	 * 
	 * If the system property {@code geb.build.adapter} is set, the class by that name is loaded, instatied with no args, and returned.
	 * Otherwise, an instance of {@link geb.buildadapter.SystemPropertiesBuildAdapter} will be returned.
	 * 
	 * 
	 * @param classLoader The class loader to attempt to load the class with
	 * @throws {@link java.lang.ClassNotFoundException} If the system property specifies a non existent class
	 */
	static BuildAdapter getBuildAdapter(ClassLoader classLoader) throws ClassNotFoundException {
		def className = System.getProperty(ADAPTER_PROPERTY_NAME)
		if (className) {
			classLoader.loadClass(className).newInstance()
		} else {
			new SystemPropertiesBuildAdapter()
		}
	}
	
}