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package ars.invoke.convert;

/**
 * 异常转换简单实现
 *
 * @author wuyongqiang
 */
public class SimpleThrowableResolver implements ThrowableResolver {
    private Class type;
    private int code;
    private String message;

    public SimpleThrowableResolver(Class type, int code) {
        this(type, code, null);
    }

    public SimpleThrowableResolver(Class type, int code, String message) {
        if (type == null) {
            throw new IllegalArgumentException("Type must not be null");
        }
        if (code < 500) {
            throw new IllegalArgumentException("Code must not be leass than 500, got " + code);
        }
        this.type = type;
        this.code = code;
        this.message = message;
    }

    @Override
    public int getCode(Throwable throwable) {
        return this.code;
    }

    @Override
    public String getMessage(Throwable throwable) {
        return this.message == null ? throwable.getMessage() : this.message;
    }

    @Override
    public boolean isResolvable(Throwable throwable) {
        return throwable != null && this.type.isAssignableFrom(throwable.getClass());
    }

}