package com.thinkbiganalytics.discovery.schema;
/*-
* #%L
* thinkbig-schema-discovery-api
* %%
* Copyright (C) 2017 ThinkBig Analytics
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
import java.util.List;
import java.util.Map;
/**
* Represents a query result
*/
public interface QueryResult {
/**
* Get columns in query result
*
* @return list of {@link QueryResultColumn}
*/
List<QueryResultColumn> getColumns();
/**
* Set columns in query result
*
* @param columns list of {@link QueryResultColumn}
*/
void setColumns(List<QueryResultColumn> columns);
/**
* Whether query result is empty
*
* @return true/false indicating if query result is empty
*/
boolean isEmpty();
/**
* Get rows in query result
*
* @return list of rows
*/
List<Map<String, Object>> getRows();
/**
* Add row in query result
*
* @param data a row
*/
void addRow(Map<String, Object> data);
/**
* Get query string
*
* @return query
*/
String getQuery();
/**
* Get column field map
*
* @return map
*/
Map<String, QueryResultColumn> getColumnFieldMap();
/**
* Get column display name map
*
* @return map
*/
Map<String, QueryResultColumn> getColumnDisplayNameMap();
}