private String formRowKey(byte[] byteKey) {
Converter converter = ownerMeta.getIdField().getConverter();
Object objKey = converter.convertFromNoSql(byteKey);
String keyAsStr = converter.convertTypeToString(objKey);
// We ALWAYS ignore partition in this case since this index row is ALWAYS tied to this row
// period...moving it all
// would be a pain and be useless...
String rowKey = getMetaDbo().getIndexRowKey(null, null) + "/" + keyAsStr;
return rowKey;
}
public void setup(
DboTableMeta tableMeta,
Field field,
String colName,
MetaAbstractClass<OWNER> ownerMeta,
MetaAbstractClass<PROXY> classMeta) {
DboTableMeta fkToTable = classMeta.getMetaDbo();
metaDbo.setup(tableMeta, colName, fkToTable, true);
super.setup(field, colName);
this.classMeta = classMeta;
this.ownerMeta = ownerMeta;
}
@Override
public void translateFromColumn(Row row, OWNER entity, NoSqlSession session) {
String indexColFamily = getMetaDbo().getIndexTableName();
String rowKey = formRowKey(row.getKey());
byte[] key = StandardConverters.convertToBytes(rowKey);
ScanInfo info = new ScanInfo(ownerMeta.getMetaDbo(), getMetaDbo(), indexColFamily, key);
int batchSize = 200;
AbstractCursor<IndexColumn> indexCursor = session.scanIndex(info, null, null, batchSize);
CursorProxy<PROXY> cursor =
new CursorProxy<PROXY>(entity, session, indexCursor, classMeta, batchSize);
ReflectionUtil.putFieldValue(entity, field, cursor);
}
@Override
public String toString() {
return "MetaCursorField [field='"
+ field.getDeclaringClass().getName()
+ "."
+ field.getName()
+ "(field type="
+ field.getType().getName()
+ "<"
+ classMeta.getMetaClass().getName()
+ ">), columnName="
+ columnName
+ "]";
}
private IndexData fetchIndexData(InfoForIndex<OWNER> info, PROXY value) {
RowToPersist row = info.getRow();
// Value is the Account.java or a Proxy of Account.java field and what we need to save in
// the database is the ID inside this Account.java object!!!!
byte[] byteVal = classMeta.convertEntityToId(value);
if (byteVal == null && value != null) {
// if value is not null but we get back a byteVal of null, it means the entity has not been
// initialized with a key yet, BUT this is required to be able to save this object
String owner = "'" + field.getDeclaringClass().getSimpleName() + "'";
String child = "'" + field.getType().getSimpleName() + "'";
String fieldName = "'" + field.getType().getSimpleName() + " " + field.getName() + "'";
throw new ChildWithNoPkException(
"The entity you are saving of type="
+ owner
+ " has a field="
+ fieldName
+ " that does not yet have a primary key so you cannot save it. To correct this\n"
+ "problem, you can either\n"
+ "1. SAVE the "
+ child
+ " BEFORE you save the "
+ owner
+ " OR\n"
+ "2. Call entityManager.fillInWithKey(Object entity), then SAVE your "
+ owner
+ "', then save your "
+ child
+ " NOTE that this"
+ "\nmethod #2 is used for when you have a bi-directional relationship where each is a child of the other");
}
byte[] key = info.getRow().getKey();
IndexData data = new IndexData();
String colFamily = getMetaDbo().getIndexTableName();
String rowKey = formRowKey(row.getKey());
data.setColumnFamilyName(colFamily);
data.setRowKey(rowKey);
IndexColumn indCol = data.getIndexColumn();
indCol.setIndexedValue(byteVal);
indCol.setPrimaryKey(key);
return data;
}
