/**
* This is used only for serializing
*
* @param name attribute name
* @param props Properties
*/
public ReferencedDimAttribute(String name, Map<String, String> props) throws LensException {
super(name, props);
String chNamesStr = props.get(MetastoreUtil.getDimRefChainNameKey(getName()));
if (!StringUtils.isBlank(chNamesStr)) {
String refColsStr = props.get(MetastoreUtil.getDimRefChainColumnKey(getName()));
String[] chainNames = StringUtils.split(chNamesStr, ",");
String[] refCols = StringUtils.split(refColsStr, ",");
for (int i = 0; i < chainNames.length; i++) {
chainRefColumns.add(new ChainRefCol(chainNames[i], refCols[i]));
}
} else {
throw new LensException(
LensCubeErrorCode.ERROR_IN_ENTITY_DEFINITION.getLensErrorInfo(),
" Ref column: " + getName() + " does not have any chain_ref_column defined");
}
}
@Override
public void addProperties(Map<String, String> props) {
super.addProperties(props);
StringBuilder chainNamesValue = new StringBuilder();
StringBuilder refColsValue = new StringBuilder();
Iterator<ChainRefCol> iterator = chainRefColumns.iterator();
// Add the first without appending separator
ChainRefCol chainRefCol = iterator.next();
chainNamesValue.append(chainRefCol.getChainName());
refColsValue.append(chainRefCol.getRefColumn());
while (iterator.hasNext()) {
chainRefCol = iterator.next();
chainNamesValue.append(CHAIN_REF_COL_SEPARATOR).append(chainRefCol.getChainName());
refColsValue.append(CHAIN_REF_COL_SEPARATOR).append(chainRefCol.getRefColumn());
}
props.put(MetastoreUtil.getDimRefChainNameKey(getName()), chainNamesValue.toString());
props.put(MetastoreUtil.getDimRefChainColumnKey(getName()), refColsValue.toString());
}