/*
Copyright 2008-2010 Gephi
Authors : Mathieu Bastian <mathieu.bastian@gephi.org>, Martin Škurla <bujacik@gmail.com>
Website : http://www.gephi.org
This file is part of Gephi.
Gephi is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
Gephi 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with Gephi. If not, see <http://www.gnu.org/licenses/>.
*/
package org.gephi.data.attributes;
import org.gephi.data.attributes.api.AttributeOrigin;
import org.gephi.data.attributes.api.AttributeValue;
import org.gephi.data.attributes.spi.AttributeValueDelegateProvider;
/**
*
* @author Mathieu Bastian
* @author Martin Škurla
*/
public final class AttributeValueImpl implements AttributeValue {
private final AttributeColumnImpl column;
private final Object value;
public AttributeValueImpl(AttributeColumnImpl column, Object value) {
this.column = column;
this.value = value;
}
public AttributeColumnImpl getColumn() {
return column;
}
public Object getValue() {
if (column.getOrigin() != AttributeOrigin.DELEGATE) {
return value;
}
else {
if (value == null)
return null;
AttributeValueDelegateProvider attributeValueDelegateProvider = column.getProvider();
Object result;
if (AttributeUtilsImpl.getDefault().isEdgeColumn(column))
result = attributeValueDelegateProvider.getEdgeAttributeValue(value, column);
else if (AttributeUtilsImpl.getDefault().isNodeColumn(column))
result = attributeValueDelegateProvider.getNodeAttributeValue(value, column);
else
throw new AssertionError();
// important for Neo4j and in future also for other storing engines
// the conversion can be necessary because of types mismatch
// for Neo4j return type can be array of primitive type which must be
// converted into List type
if (result.getClass().isArray())
result = ListFactory.fromArray(result);
return result;
}
}
@Override
public boolean equals(Object obj) {
if (obj != null && obj instanceof AttributeValue) {
if (this == obj) {
return true;
}
Object thisVal = this.getValue();
Object objVal = ((AttributeValue) obj).getValue();
if (thisVal == null && objVal == null) {
return true;
}
if (thisVal != null && objVal != null && thisVal.equals(objVal)) {
return true;
}
}
return false;
}
}