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/**
 * Copyright 2010 JBoss Inc
 *
 * 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.drools.ide.common.client.modeldriven;

import java.util.Iterator;
import java.util.List;

import org.drools.ide.common.client.modeldriven.brl.PortableObject;

/**
 * 
 * @author Toni Rikkola
 * 
 */
public class MethodInfo implements PortableObject {

	private String name;
	private List params;
	private String returnClassType;
	private String parametricReturnType;
	private String genericType;

	public MethodInfo() {
	}

	/**
	 * 
	 * @param name
	 *            method name
	 * @param params
	 *            method params list
	 * @param returnType
	 *            method's return type
	 */
	public MethodInfo(String name, List params, Class returnType, String parametricReturnType, String genericType) {
		this.name = name;
		this.params = params;
		this.returnClassType = returnType.getName();
		this.parametricReturnType = parametricReturnType;
		this.genericType = genericType;
	}

	public String getNameWithParameters() {
		if (params.isEmpty()) {
			return name + "()";
		}
		StringBuilder p = new StringBuilder();
		
		for (Iterator iterator = params.iterator(); iterator.hasNext();) {
			p.append(", ").append(iterator.next());
		}

		return name + "(" + p.substring(2)  + ")";
	}

	public String getName() {
		return name;
	}

	public List getParams() {
		return params;
	}

	public String getReturnClassType() {
		return returnClassType;
	}

	public String getParametricReturnType() {
		return parametricReturnType;
	}

	public String getGenericType() {
		return genericType;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((name == null) ? 0 : name.hashCode());
		result = prime
				* result
				+ ((parametricReturnType == null) ? 0 : parametricReturnType
						.hashCode());
		result = prime * result + ((params == null) ? 0 : params.hashCode());
		result = prime * result
				+ ((returnClassType == null) ? 0 : returnClassType.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		MethodInfo other = (MethodInfo) obj;
		if (name == null) {
			if (other.name != null)
				return false;
		} else if (!name.equals(other.name))
			return false;
		if (parametricReturnType == null) {
			if (other.parametricReturnType != null)
				return false;
		} else if (!parametricReturnType.equals(other.parametricReturnType))
			return false;
		if (params == null) {
			if (other.params != null)
				return false;
		} else if (!params.equals(other.params))
			return false;
		if (returnClassType == null) {
			if (other.returnClassType != null)
				return false;
		} else if (!returnClassType.equals(other.returnClassType))
			return false;
		return true;
	}

	@Override
	public String toString() {
		return getNameWithParameters();
	}
}