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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: DefaultParameterMap.java,v $
* $Revision: 1.4 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
package com.sun.star.report.util;
import java.util.HashMap;
import com.sun.star.report.ParameterMap;
import java.util.Map;
public class DefaultParameterMap implements ParameterMap
{
private final Map backend;
public DefaultParameterMap ()
{
backend = new HashMap();
}
public void clear ()
{
backend.clear();
}
/**
* Retrieves the value stored for a key in this properties collection.
*
* @param key the property key.
* @return The stored value, or <code>null</code> if the key does not exist in this
* collection.
*/
public Object get (final String key)
{
if (key == null)
{
throw new NullPointerException
("DefaultParameterMap.get (..): Parameter 'key' must not be null");
}
return backend.get(key);
}
/**
* Retrieves the value stored for a key in this properties collection, and returning the
* default value if the key was not stored in this properties collection.
*
* @param key the property key.
* @param defaultValue the default value to be returned when the key is not stored in
* this properties collection.
* @return The stored value, or the default value if the key does not exist in this
* collection.
*/
public Object get (final String key, final Object defaultValue)
{
if (key == null)
{
throw new NullPointerException
("DefaultParameterMap.get (..): Parameter 'key' must not be null");
}
final Object o = this.backend.get(key);
if (o == null)
{
return defaultValue;
}
return o;
}
public String[] keys ()
{
return (String[]) this.backend.keySet().toArray(new String[backend.size()]);
}
/**
* Adds a property to this properties collection. If a property with the given name
* exist, the property will be replaced with the new value. If the value is null, the
* property will be removed.
*
* @param key the property key.
* @param value the property value.
*/
public void put (final String key, final Object value)
{
if (key == null)
{
throw new NullPointerException
("ReportProperties.put (..): Parameter 'key' must not be null");
}
if (value == null)
{
this.backend.remove(key);
}
else
{
this.backend.put(key, value);
}
}
public int size ()
{
return this.backend.size();
}
}
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