/**
* get description for the table with given name
*
* @param tableName - name of the table
* @return column names as string list
* @throws DataBaseTableException - if something wrong
*/
public List<String> getTableDescription(String tableName) throws DataBaseTableException {
TableDescription td = null;
for (DataBase db : databases.values()) {
td = db.getTableDescription(tableName);
if (td != null) {
return td.getColumnNames();
}
}
return null;
}
/**
* get descriptions of all tables in the database
*
* @return set of descriptions, where each descriptions - is a list that contains name of the
* table at 0 index, and column names. Key name has 1 index in list.
*/
public Map<String, TableDescription> getTablesInDataBaseDescription() {
Map<String, TableDescription> result = new HashMap<String, TableDescription>();
for (DataBase db : databases.values()) {
for (TableDescription td : db.getTablesDescriptions()) {
String tableName = td.getName();
if (!result.containsKey(tableName)) {
result.put(tableName, td);
}
}
}
return result;
}
/**
* create table with given description
*
* @param tableDescription - given description
* @return true - if database modified
* @throws DataBaseTableException - if something wrong
*/
public boolean createTable(TableDescription tableDescription) throws DataBaseTableException {
String tableName = tableDescription.getName();
List<String> columnNames = tableDescription.getColumnNames();
return createTable(tableName, columnNames);
}