public List<String> getSchema(
String sourceKeyspace, String destKeyspace, Collection<String> tables) {
Cluster cluster = peer.getCluster();
Metadata meta = cluster.getMetadata();
KeyspaceMetadata kmeta = meta.getKeyspace(keyspace);
Collection<TableMetadata> tmeta = kmeta.getTables();
// List<String> drops = new ArrayList<>();
List<String> created = new ArrayList<>();
for (TableMetadata tab : tmeta) {
if (tables.size() != 0) {
String name = tab.getName();
if (!tables.contains(name)) continue;
}
String s = tab.asCQLQuery();
StringBuilder sb = new StringBuilder();
sb.append("DROP TABLE IF EXISTS ")
.append(destKeyspace)
.append(".")
.append(tab.getName())
.append(";\n");
created.add(sb.toString());
created.add(s.replaceAll("CREATE TABLE " + sourceKeyspace, "CREATE TABLE " + destKeyspace));
}
return created;
}
public List<String> getTables() throws ExecutionException {
String query =
"select columnfamily_name from system.schema_columnfamilies where keyspace_name = ?";
List<String> tables = new ArrayList<String>();
BoundStatement bs = peer.bPrepare(session, query);
bs.setString(0, keyspace);
ResultSet rs = session.execute(bs);
for (Row row : rs) {
String s = row.getString(0);
tables.add(s);
}
return tables;
}
public void close() {
peer.destroy();
}