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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
AbstractFreezable.java | 100% | 100% | 100% | 100% |
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/*
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* Copyright (C) The DNA Group. All rights reserved.
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*
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* This software is published under the terms of the DNA
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* Software License version 1.1, a copy of which has been included
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* with this distribution in the LICENSE.txt file.
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*/
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package org.codehaus.dna.impl;
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/**
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* Abstract utility class for resources that can be "frozen"
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* and made read-only after being constructed.
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*
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* @version $Revision: 1.2 $ $Date: 2004/05/01 09:51:48 $
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*/
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abstract class AbstractFreezable
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implements Freezable
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{ |
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/**
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* Flag indicating whether resource has been
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* made read-only yet.
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*/
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private boolean m_readOnly; |
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/**
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* Mark the resource as read only.
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*/
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public void makeReadOnly() |
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{ |
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m_readOnly = true;
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} |
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/**
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* Check if the resource has been "frozen"
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* and thus is read only. If read-only then
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* throw an IllegalStateException.
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*
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* @throws IllegalStateException if resource is read-only
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*/
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protected final void checkWriteable() |
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{ |
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if( m_readOnly )
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{ |
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final String message = |
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"Resource (" + this + ") is read only and can not be modified"; |
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throw new IllegalStateException( message ); |
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} |
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} |
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/**
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* Return true if resource has been made read-only or frozen.
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*
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* @return true if resource has been made read-only or
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* frozen, false otherwise.
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*/
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protected final boolean isReadOnly() |
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{ |
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return m_readOnly;
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} |
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} |
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