/**
* Initialization to be done after constructor assignments, such as setting of the all-important
* DDFManager.
*/
protected void initialize(
DDFManager manager,
Object data,
Class<?>[] typeSpecs,
String namespace,
String name,
Schema schema)
throws DDFException {
this.validateSchema(schema);
this.setManager(manager); // this must be done first in case later stuff needs a manager
if (typeSpecs != null) {
this.getRepresentationHandler().set(data, typeSpecs);
}
this.getSchemaHandler().setSchema(schema);
if (schema != null && schema.getTableName() == null) {
String tableName = this.getSchemaHandler().newTableName();
schema.setTableName(tableName);
}
if (Strings.isNullOrEmpty(namespace)) namespace = this.getManager().getNamespace();
this.setNamespace(namespace);
manager.setDDFUUID(this, UUID.randomUUID());
if (!Strings.isNullOrEmpty(name)) manager.setDDFName(this, name);
// Facades
this.ML = new MLFacade(this, this.getMLSupporter());
this.VIEWS = new ViewsFacade(this, this.getViewHandler());
this.Transform = new TransformFacade(this, this.getTransformationHandler());
this.R = new RFacade(this, this.getAggregationHandler());
this.mCreatedTime = new Date();
}
// ////// MetaData that deserves to be right here at the top level ////////
private void validateSchema(Schema schema) throws DDFException {
Set<String> columnSet = new HashSet<String>();
if (schema != null && schema.getColumns() != null) {
for (Column column : schema.getColumns()) {
if (columnSet.contains(column.getName())) {
throw new DDFException(String.format("Duplicated column name %s", column.getName()));
} else {
columnSet.add(column.getName());
}
}
}
}
/**
* @param manager
* @param data
* @param typeSpecs
* @param namespace
* @param name
* @param schema
* @param tableName: name of the underlying table that representing the DDF
* @throws DDFException
*/
protected void initialize(
DDFManager manager,
Object data,
Class<?>[] typeSpecs,
String namespace,
String name,
Schema schema,
String tableName)
throws DDFException {
initialize(manager, data, typeSpecs, namespace, name, schema);
if (schema != null && tableName != null) {
schema.setTableName(tableName);
}
}