/*
* This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
*
* Copyright 2008-2011 Geosparc nv, http://www.geosparc.com/, Belgium.
*
* The program is available in open source according to the GNU Affero
* General Public License. All contributions in this program are covered
* by the Geomajas Contributors License Agreement. For full licensing
* details, see LICENSE.txt in the project root.
*/
package org.geomajas.gwt.client.util;
import java.util.HashMap;
import java.util.Map;
import org.geomajas.configuration.AssociationAttributeInfo;
import org.geomajas.configuration.AttributeInfo;
import org.geomajas.configuration.PrimitiveAttributeInfo;
import org.geomajas.layer.feature.Attribute;
import org.geomajas.layer.feature.attribute.AssociationAttribute;
import org.geomajas.layer.feature.attribute.AssociationValue;
import org.geomajas.layer.feature.attribute.BooleanAttribute;
import org.geomajas.layer.feature.attribute.CurrencyAttribute;
import org.geomajas.layer.feature.attribute.DateAttribute;
import org.geomajas.layer.feature.attribute.DoubleAttribute;
import org.geomajas.layer.feature.attribute.FloatAttribute;
import org.geomajas.layer.feature.attribute.ImageUrlAttribute;
import org.geomajas.layer.feature.attribute.IntegerAttribute;
import org.geomajas.layer.feature.attribute.LongAttribute;
import org.geomajas.layer.feature.attribute.ManyToOneAttribute;
import org.geomajas.layer.feature.attribute.OneToManyAttribute;
import org.geomajas.layer.feature.attribute.PrimitiveAttribute;
import org.geomajas.layer.feature.attribute.ShortAttribute;
import org.geomajas.layer.feature.attribute.StringAttribute;
import org.geomajas.layer.feature.attribute.UrlAttribute;
/**
* Utility for attribute manipulations.
*
* @author Jan De Moerloose
* @since 1.9.0
*
*/
public final class AttributeUtil {
private AttributeUtil() {
}
/**
* Creates an empty association value. An empty association value is a value for which the attributes and identifier
* are empty.
*
* @param attributeInfo
* @return an empty value
*/
public static AssociationValue createEmptyAssociationValue(AssociationAttributeInfo attributeInfo) {
AssociationValue value = new AssociationValue();
Map<String, Attribute<?>> attributes = new HashMap<String, Attribute<?>>();
for (AttributeInfo attrInfo : attributeInfo.getFeature().getAttributes()) {
attributes.put(attrInfo.getName(), createEmptyAttribute(attrInfo));
}
value.setAllAttributes(attributes);
value.setId(createEmptyPrimitiveAttribute(attributeInfo.getFeature().getIdentifier()));
return value;
}
/**
* Creates an empty attribute. An empty attribute is an attribute which has null as its value.
*
* @param attrInfo
* @return an empty attribute.
*/
public static Attribute<?> createEmptyAttribute(AttributeInfo attrInfo) {
if (attrInfo instanceof PrimitiveAttributeInfo) {
return createEmptyPrimitiveAttribute((PrimitiveAttributeInfo) attrInfo);
} else if (attrInfo instanceof AssociationAttributeInfo) {
return createEmptyAssociationAttribute((AssociationAttributeInfo) attrInfo);
}
return null;
}
/**
* Creates an empty primitive attribute. An empty attribute is an attribute which has null as its value.
*
* @param info
* @return an empty primitive attribute of the right type.
*/
public static PrimitiveAttribute<?> createEmptyPrimitiveAttribute(PrimitiveAttributeInfo info) {
PrimitiveAttribute<?> attribute = null;
switch (info.getType()) {
case BOOLEAN:
attribute = new BooleanAttribute();
break;
case SHORT:
attribute = new ShortAttribute();
break;
case INTEGER:
attribute = new IntegerAttribute();
break;
case LONG:
attribute = new LongAttribute();
break;
case FLOAT:
attribute = new FloatAttribute();
break;
case DOUBLE:
attribute = new DoubleAttribute();
break;
case CURRENCY:
attribute = new CurrencyAttribute();
break;
case STRING:
attribute = new StringAttribute();
break;
case DATE:
attribute = new DateAttribute();
break;
case URL:
attribute = new UrlAttribute();
break;
case IMGURL:
attribute = new ImageUrlAttribute();
}
attribute.setEditable(info.isEditable());
return attribute;
}
/**
* Creates an empty association attribute. An empty attribute is an attribute which has null as its value.
*
* @param info
* @return an empty association attribute of the right type.
*/
public static AssociationAttribute<?> createEmptyAssociationAttribute(AssociationAttributeInfo info) {
AssociationAttribute<?> association = null;
switch (info.getType()) {
case MANY_TO_ONE:
association = new ManyToOneAttribute();
break;
case ONE_TO_MANY:
association = new OneToManyAttribute();
}
association.setEditable(info.isEditable());
return association;
}
}