private void collectAttributes(
SimpleFeatureType schema, List<String> retainedAttributes, SimpleFeatureTypeBuilder tb) {
for (AttributeDescriptor descriptor : schema.getAttributeDescriptors()) {
// check whether descriptor has been selected in the attribute list
boolean isInRetainList = true;
if (retainedAttributes != null) {
isInRetainList = retainedAttributes.contains(descriptor.getLocalName());
logger.fine("Checking " + descriptor.getLocalName() + " --> " + isInRetainList);
}
if (!isInRetainList || schema.getGeometryDescriptor() == descriptor) {
continue;
}
// build the attribute to return
AttributeTypeBuilder builder = new AttributeTypeBuilder();
builder.setName(schema.getName().getLocalPart() + "_" + descriptor.getName());
builder.setNillable(descriptor.isNillable());
builder.setBinding(descriptor.getType().getBinding());
builder.setMinOccurs(descriptor.getMinOccurs());
builder.setMaxOccurs(descriptor.getMaxOccurs());
builder.setDefaultValue(descriptor.getDefaultValue());
builder.setCRS(schema.getCoordinateReferenceSystem());
AttributeDescriptor intersectionDescriptor =
builder.buildDescriptor(
schema.getName().getLocalPart() + "_" + descriptor.getName(), descriptor.getType());
tb.add(intersectionDescriptor);
tb.addBinding(descriptor.getType());
}
}
/**
* Sets the minOccurs of the next attribute added to the feature type.
*
* <p>This value is reset after a call to {@link #add(String, Class)}
*/
public SimpleFeatureTypeBuilder minOccurs(int minOccurs) {
attributeBuilder.setMinOccurs(minOccurs);
return this;
}