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Spring Framework example source code file (PrioritizedParameterNameDiscoverer.java)

This example Spring Framework source code file (PrioritizedParameterNameDiscoverer.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

iterator, iterator, linkedlist, linkedlist, list, parameternamediscoverer, parameternamediscoverer, prioritizedparameternamediscoverer, reflection, string, string, util

The Spring Framework PrioritizedParameterNameDiscoverer.java source code

/*
 * Copyright 2002-2007 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.core;

import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

/**
 * ParameterNameDiscoverer implementation that tries several ParameterNameDiscoverers
 * in succession. Those added first in the <code>addDiscoverer method have
 * highest priority. If one returns <code>null, the next will be tried.
 *
 * <p>The default behavior is always to return null
 * if no discoverer matches.
 *
 * @author Rod Johnson
 * @author Juergen Hoeller
 * @since 2.0
 */
public class PrioritizedParameterNameDiscoverer implements ParameterNameDiscoverer {
	
	private final List parameterNameDiscoverers = new LinkedList();


	/**
	 * Add a further ParameterNameDiscoverer to the list of discoverers
	 * that this PrioritizedParameterNameDiscoverer checks.
	 */
	public void addDiscoverer(ParameterNameDiscoverer pnd) {
		this.parameterNameDiscoverers.add(pnd);
	}


	public String[] getParameterNames(Method method) {
		for (Iterator it = this.parameterNameDiscoverers.iterator(); it.hasNext(); ) {
			ParameterNameDiscoverer pnd = (ParameterNameDiscoverer) it.next();
			String[] result = pnd.getParameterNames(method);
			if (result != null) {
				return result;
			}
		}
		return null;
	}

	public String[] getParameterNames(Constructor ctor) {
		for (Iterator it = this.parameterNameDiscoverers.iterator(); it.hasNext(); ) {
			ParameterNameDiscoverer pnd = (ParameterNameDiscoverer) it.next();
			String[] result = pnd.getParameterNames(ctor);
			if (result != null) {
				return result;
			}
		}
		return null;
	}

}

Other Spring Framework examples (source code examples)

Here is a short list of links related to this Spring Framework PrioritizedParameterNameDiscoverer.java source code file:

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