/******************************************************************************
* Copyright (c) 2016 Oracle
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Konstantin Komissarchik - initial implementation and ongoing maintenance
******************************************************************************/
package org.eclipse.sapphire;
/**
* @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a>
*/
public abstract class ValuePropertyBinding extends PropertyBinding
{
/**
* Reads the current value of the property and returns it to the caller. The method should
* return null when the property value is not set rather than returning a default value.
* Default values should be specified via annotations on the property.
*
* @return the value of the property
*/
public abstract String read();
/**
* Writes a new property value. Note that the value parameter can be null, in which case
* the property value should be cleared in the resource. The implementation must be
* consistent with the read method. In particular, calling write( x ) followed by read()
* should always return x, for all values of x including null.
*
* @param value the new value for the property
*/
public abstract void write( String value );
}