/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.core.gui.configuration.helper;
import java.util.LinkedList;
import javax.el.ValueExpression;
import org.rhq.core.domain.configuration.definition.PropertyDefinition;
import org.rhq.core.domain.configuration.definition.PropertyDefinitionMap;
import org.rhq.core.gui.util.FacesExpressionUtility;
import org.jetbrains.annotations.Nullable;
/**
* @author Ian Springer
*/
public class ConfigurationExpressionUtility
{
public static ValueExpression createValueExpressionForPropertyDefiniton(
String configurationDefinitionExpressionString,
PropertyDefinition propertyDefinition) {
StringBuilder stringBuilder = new StringBuilder("#{");
stringBuilder.append(FacesExpressionUtility.unwrapExpressionString(configurationDefinitionExpressionString));
LinkedList<PropertyDefinition> propertyDefinitionHierarchy = getPropertyDefinitionHierarchy(propertyDefinition);
for (PropertyDefinition subPropertyDefinition : propertyDefinitionHierarchy)
{
PropertyDefinition parentPropertyDefinition = getParentPropertyDefinition(subPropertyDefinition);
stringBuilder.append(".");
if (parentPropertyDefinition == null || parentPropertyDefinition instanceof PropertyDefinitionMap)
{
// top-level property or map member property
stringBuilder.append("propertyDefinitions['").append(subPropertyDefinition.getName()).append("']");
} else {
// list member property
stringBuilder.append("memberDefinition");
}
}
stringBuilder.append("}");
@SuppressWarnings({"UnnecessaryLocalVariable"})
ValueExpression valueExpression = FacesExpressionUtility.createValueExpression(stringBuilder.toString(),
PropertyDefinition.class);
return valueExpression;
}
public static LinkedList<PropertyDefinition> getPropertyDefinitionHierarchy(PropertyDefinition propertyDefinition)
{
LinkedList<PropertyDefinition> propertyHierarchy = new LinkedList<PropertyDefinition>();
PropertyDefinition parentPropertyDefinition = propertyDefinition;
while ((parentPropertyDefinition = getParentPropertyDefinition(parentPropertyDefinition)) != null)
propertyHierarchy.addFirst(parentPropertyDefinition);
propertyHierarchy.add(propertyDefinition);
return propertyHierarchy;
}
@Nullable
public static PropertyDefinition getParentPropertyDefinition(PropertyDefinition property) {
PropertyDefinition parentPropertyDefinition;
if (property.getParentPropertyListDefinition() != null)
parentPropertyDefinition = property.getParentPropertyListDefinition();
else if (property.getParentPropertyMapDefinition() != null)
parentPropertyDefinition = property.getParentPropertyMapDefinition();
else
parentPropertyDefinition = null;
return parentPropertyDefinition;
}
}