/**
* Copyright (C) 2010-2014 Morgner UG (haftungsbeschränkt)
*
* This file is part of Structr <http://structr.org>.
*
* Structr 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, either version 3 of the
* License, or (at your option) any later version.
*
* Structr 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 Structr. If not, see <http://www.gnu.org/licenses/>.
*/
package org.structr.core.validator;
import java.util.LinkedHashSet;
import java.util.Set;
import org.structr.common.SecurityContext;
import org.structr.common.error.EmptyPropertyToken;
import org.structr.common.error.ErrorBuffer;
import org.structr.common.error.ValueToken;
import org.structr.core.GraphObject;
import org.structr.core.PropertyValidator;
import org.structr.core.property.PropertyKey;
//~--- classes ----------------------------------------------------------------
/**
* A validator that ensures a given String value is a valid enum element of the
* given type.
*
* @author Christian Morgner
*/
public class EnumValidator<T> implements PropertyValidator<T> {
private final Set<T> values = new LinkedHashSet<>();
public EnumValidator(T[] values) {
for (final T t : values) {
this.values.add(t);
}
}
@Override
public boolean isValid(SecurityContext securityContext, GraphObject object, PropertyKey<T> key, T value, ErrorBuffer errorBuffer) {
if (value == null) {
errorBuffer.add(object.getType(), new EmptyPropertyToken(key));
} else {
if (values.contains(value)) {
return true;
} else {
errorBuffer.add(object.getType(), new ValueToken(key, values.toArray()));
}
}
return false;
}
@Override
public boolean requiresSynchronization() {
return false;
}
}