XMLString.java

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00001 
00002 //
00003 // XML storage classes version 1.2
00004 //
00005 // XMLString.java
00006 //
00007 // Copyright (c) 2004, 2005 Martin Fuchs <martin-fuchs@gmx.net>
00008 //
00009 
00010 
00011 /*
00012 
00013  All rights reserved.
00014 
00015  Redistribution and use in source and binary forms, with or without
00016  modification, are permitted provided that the following conditions are met:
00017 
00018  * Redistributions of source code must retain the above copyright
00019     notice, this list of conditions and the following disclaimer.
00020  * Redistributions in binary form must reproduce the above copyright
00021     notice, this list of conditions and the following disclaimer in
00022     the documentation and/or other materials provided with the
00023     distribution.
00024 
00025  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00026  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00027  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00028  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
00029  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00030  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00031  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00032  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00033  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00034  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00035  POSSIBILITY OF SUCH DAMAGE.
00036 
00037 */
00038 
00039 package de.mfuchs.xmlstorage;
00040 
00041 import de.mfuchs.xmlstorage.stream.XMLStreamReader;
00042 
00043 
00044 /**
00045  * XMLString is used convenient attribute data access in XMLNodes.
00046  */
00047 public class XMLString
00048 {
00049     public XMLString(String value)
00050     {
00051         _value = value;
00052     }
00053 
00054     public XMLString(final String value, final String def/*=""*/)
00055     {
00056         if (value!=null && value.length()>0)
00057             _value = value;
00058         else
00059             _value = def;
00060     }
00061 
00062 
00063     public XMLString(final AbstractXMLNode node, final String attrName)
00064     {
00065         this(node, attrName, "");
00066     }
00067 
00068     public XMLString(final XMLPos pos, final String attrName)
00069     {
00070         this(pos.cur(), attrName, "");
00071     }
00072 
00073     public XMLString(final XMLPos pos, final String attrName, final String def/*=""*/)
00074     {
00075         this(pos.cur(), attrName, def);
00076     }
00077 
00078     public XMLString(final XMLStreamReader reader, final String attrName)
00079     {
00080         this(reader.getNode(), attrName, "");
00081     }
00082 
00083     public XMLString(final XMLStreamReader reader, final String attrName, final String def/*=""*/)
00084     {
00085         this(reader.getNode(), attrName, def);
00086     }
00087 
00088     public XMLString(final AbstractXMLNode node, final String attrName, final String def/*=""*/)
00089     {
00090         final String value = node.get(attrName);
00091 
00092         if (value.length() > 0)
00093             _value = value;
00094         else
00095             _value = def;
00096     }
00097 
00098 
00099     public String toString()
00100     {
00101         return _value;
00102     }
00103 
00104     protected String _value;
00105 }