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Spring Framework example source code file (ScriptFactory.java)

This example Spring Framework source code file (ScriptFactory.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

class, class, io, ioexception, ioexception, object, object, scriptcompilationexception, scriptcompilationexception, scriptfactory, string

The Spring Framework ScriptFactory.java source code

/*
 * Copyright 2002-2008 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.springframework.scripting;

import java.io.IOException;

/**
 * Script definition interface, encapsulating the configuration
 * of a specific script as well as a factory method for
 * creating the actual scripted Java <code>Object.
 *
 * @author Juergen Hoeller
 * @author Rob Harrop
 * @since 2.0
 * @see #getScriptSourceLocator
 * @see #getScriptedObject
 */
public interface ScriptFactory {

	/**
	 * Return a locator that points to the source of the script.
	 * Interpreted by the post-processor that actually creates the script.
	 * <p>Typical supported locators are Spring resource locations
	 * (such as "file:C:/myScript.bsh" or "classpath:myPackage/myScript.bsh")
	 * and inline scripts ("inline:myScriptText...").
	 * @return the script source locator
	 * @see org.springframework.scripting.support.ScriptFactoryPostProcessor#convertToScriptSource
	 * @see org.springframework.core.io.ResourceLoader
	 */
	String getScriptSourceLocator();

	/**
	 * Return the business interfaces that the script is supposed to implement.
	 * <p>Can return null if the script itself determines
	 * its Java interfaces (such as in the case of Groovy).
	 * @return the interfaces for the script
	 */
	Class[] getScriptInterfaces();

	/**
	 * Return whether the script requires a config interface to be
	 * generated for it. This is typically the case for scripts that
	 * do not determine Java signatures themselves, with no appropriate
	 * config interface specified in <code>getScriptInterfaces().
	 * @return whether the script requires a generated config interface
	 * @see #getScriptInterfaces()
	 */
	boolean requiresConfigInterface();

	/**
	 * Factory method for creating the scripted Java object.
	 * <p>Implementations are encouraged to cache script metadata such as
	 * a generated script class. Note that this method may be invoked
	 * concurrently and must be implemented in a thread-safe fashion.
	 * @param scriptSource the actual ScriptSource to retrieve
	 * the script source text from (never <code>null)
	 * @param actualInterfaces the actual interfaces to expose,
	 * including script interfaces as well as a generated config interface
	 * (if applicable; may be <code>null)
	 * @return the scripted Java object
	 * @throws IOException if script retrieval failed
	 * @throws ScriptCompilationException if script compilation failed
	 */
	Object getScriptedObject(ScriptSource scriptSource, Class[] actualInterfaces)
			throws IOException, ScriptCompilationException;

	/**
	 * Determine the type of the scripted Java object.
	 * <p>Implementations are encouraged to cache script metadata such as
	 * a generated script class. Note that this method may be invoked
	 * concurrently and must be implemented in a thread-safe fashion.
	 * @param scriptSource the actual ScriptSource to retrieve
	 * the script source text from (never <code>null)
	 * @return the type of the scripted Java object, or <code>null
	 * if none could be determined
	 * @throws IOException if script retrieval failed
	 * @throws ScriptCompilationException if script compilation failed
	 * @since 2.0.3
	 */
	Class getScriptedObjectType(ScriptSource scriptSource)
			throws IOException, ScriptCompilationException;

	/**
	 * Determine whether a refresh is required (e.g. through
	 * ScriptSource's <code>isModified() method).
	 * @param scriptSource the actual ScriptSource to retrieve
	 * the script source text from (never <code>null)
	 * @return whether a fresh {@link #getScriptedObject} call is required
	 * @since 2.5.2
	 * @see ScriptSource#isModified()
	 */
	boolean requiresScriptedObjectRefresh(ScriptSource scriptSource);

}

Other Spring Framework examples (source code examples)

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