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/**************************************************************
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*************************************************************/
package org.apache.openoffice.ooxml.schema.model.complex;
import org.apache.openoffice.ooxml.schema.model.base.INodeVisitor;
import org.apache.openoffice.ooxml.schema.model.base.Location;
import org.apache.openoffice.ooxml.schema.model.base.Node;
import org.apache.openoffice.ooxml.schema.model.base.NodeType;
/** An occurrence indicator is based on a minimum and a maximum value.
* The minimum value is 0 or larger. If it is 0 then the child node is optional.
* The maximum value is at least as large as the minimum value.
* It can be 'unbounded' in which case the child node can appear any number of times.
* 'Unbounded' is internally stored as -1.
*
* An OccurrenceIndicator represents the minOccur and maxOccur attributes of
* XML schema elements.
*
* There is usually exactly one child.
*/
public class OccurrenceIndicator
extends Node
{
public static int unbounded = -1;
public OccurrenceIndicator (
final Node aParent,
final String sMinimum,
final String sMaximum,
final Location aLocation)
{
super(aParent, null, aLocation);
mnMinimum = ParseValue(sMinimum);
mnMaximum = ParseValue(sMaximum);
assert(mnMinimum>=0);
assert(mnMaximum==unbounded || mnMaximum>=mnMinimum);
}
@Override
public NodeType GetNodeType ()
{
return NodeType.OccurrenceIndicator;
}
/** Return a string version of the minimum value for textual display.
*/
public String GetDisplayMinimum ()
{
return Integer.toString(mnMinimum);
}
/** Return a string version of the maximum value for textual display.
*/
public String GetDisplayMaximum ()
{
if (mnMaximum == unbounded)
return "unbounded";
else
return Integer.toString(mnMaximum);
}
public int GetMinimum ()
{
return mnMinimum;
}
public int GetMaximum ()
{
return mnMaximum;
}
@Override
public void AcceptVisitor (final INodeVisitor aVisitor)
{
aVisitor.Visit(this);
}
@Override
public String toString ()
{
return String.format("occurrence %s to %s",
GetDisplayMinimum(),
GetDisplayMaximum());
}
private static int ParseValue (final String sValue)
{
if (sValue == null)
{
// Missing values default to 1.
return 1;
}
else
switch (sValue)
{
case "0" : return 0;
case "1" : return 1;
case "unbounded" : return unbounded;
default: return Integer.parseInt(sValue);
}
}
private final int mnMinimum;
private final int mnMaximum;
}
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