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package br.com.anteros.nosql.persistence.mongodb.session;

import java.lang.reflect.Method;

import br.com.anteros.core.utils.ObjectUtils;

public final class MethodClassKey implements Comparable {

	private final Method method;

	private final Class targetClass;

	public MethodClassKey(Method method, Class targetClass) {
		this.method = method;
		this.targetClass = targetClass;
	}


	@Override
	public boolean equals(Object other) {
		if (this == other) {
			return true;
		}
		if (!(other instanceof MethodClassKey)) {
			return false;
		}
		MethodClassKey otherKey = (MethodClassKey) other;
		return (this.method.equals(otherKey.method) &&
				ObjectUtils.nullSafeEquals(this.targetClass, otherKey.targetClass));
	}

	@Override
	public int hashCode() {
		return this.method.hashCode() + (this.targetClass != null ? this.targetClass.hashCode() * 29 : 0);
	}

	@Override
	public String toString() {
		return this.method + (this.targetClass != null ? " on " + this.targetClass : "");
	}

	@Override
	public int compareTo(MethodClassKey other) {
		int result = this.method.getName().compareTo(other.method.getName());
		if (result == 0) {
			result = this.method.toString().compareTo(other.method.toString());
			if (result == 0 && this.targetClass != null && other.targetClass != null) {
				result = this.targetClass.getName().compareTo(other.targetClass.getName());
			}
		}
		return result;
	}

}