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/*
* Copyright (c) 2013, 2016 Eike Stepper (Berlin, Germany) and others.
* 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:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.net4j.internal.db.ddl.delta;
import org.eclipse.net4j.db.ddl.IDBSchema;
import org.eclipse.net4j.db.ddl.IDBSchemaElement;
import org.eclipse.net4j.db.ddl.delta.IDBDelta;
import org.eclipse.net4j.db.ddl.delta.IDBDeltaVisitor;
import org.eclipse.net4j.db.ddl.delta.IDBPropertyDelta;
import java.io.IOException;
import java.io.Writer;
import java.text.MessageFormat;
import java.util.List;
/**
* @author Eike Stepper
*/
public final class DBPropertyDelta<T> extends DBDelta implements IDBPropertyDelta<T>
{
private static final long serialVersionUID = 1L;
private Type type;
private T value;
private T oldValue;
public DBPropertyDelta(DBDelta parent, String name, Type type, T value, T oldValue)
{
super(parent, name, DBDelta.getChangeKind(value, oldValue));
this.type = type;
this.value = value;
this.oldValue = oldValue;
}
/**
* Constructor for deserialization.
*/
protected DBPropertyDelta()
{
}
public DeltaType getDeltaType()
{
return DeltaType.PROPERTY;
}
public IDBSchemaElement getSchemaElement(IDBSchema schema)
{
return null;
}
public Type getType()
{
return type;
}
public T getValue()
{
return value;
}
public T getOldValue()
{
return oldValue;
}
@Override
public String toString()
{
return MessageFormat.format("DBPropertyDelta[name={0}, kind={1}, type={2}, value={3}, oldValue={4}]", getName(), getChangeKind(), getType(), getValue(),
getOldValue());
}
@Override
protected void doAccept(IDBDeltaVisitor visitor)
{
visitor.visit(this);
}
@Override
protected void collectElements(List<IDBDelta> elements)
{
// Do nothing
}
@Override
protected void dumpAdditionalProperties(Writer writer) throws IOException
{
writer.append(", type=");
writer.append(getType().toString());
writer.append(", value=");
writer.append(toString(getValue()));
writer.append(", oldValue=");
writer.append(toString(getOldValue()));
}
private static CharSequence toString(Object object)
{
if (object == null)
{
return "null";
}
return object.toString();
}
}
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