ProjectOperator(Operator op, ArrayList<SelectExpressionItem> p, Table table, boolean allColumns) {
this.op = op;
this.tuple = new Object[p.size()];
this.toProject = p;
this.table = table;
this.schema = Utility.tables.get(table.getAlias());
this.allColumns = allColumns;
}
/* (non-Javadoc)
* @see edu.buffalo.cse562.Operator#readOneTuple()
*/
public ScanOperatorPlain(Table table) {
this.tableName = table.getName();
this.tableAlias = table.getAlias();
HashMap<String, ColumnDetail> intSchema = Main.tableMapping.get(this.tableName.toLowerCase());
this.indexMaps = Main.indexTypeMaps.get(this.tableName.toLowerCase());
if (intSchema == null) {
intSchema = Main.tableMapping.get(this.tableName.toUpperCase());
this.indexMaps = Main.indexTypeMaps.get(this.tableName.toUpperCase());
}
this.operatorTableSchema = this.initialiseOperatorTableSchema(intSchema);
this.dataFile =
FileSystems.getDefault()
.getPath(ConfigManager.getDataDir(), tableName.toLowerCase() + ".dat");
reset();
}