/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package org.apache.ambari.server.api.query;
import java.util.Map;
import java.util.Set;
import org.apache.ambari.server.api.query.render.Renderer;
import org.apache.ambari.server.api.services.Result;
import org.apache.ambari.server.controller.spi.NoSuchParentResourceException;
import org.apache.ambari.server.controller.spi.NoSuchResourceException;
import org.apache.ambari.server.controller.spi.PageRequest;
import org.apache.ambari.server.controller.spi.Predicate;
import org.apache.ambari.server.controller.spi.SortRequest;
import org.apache.ambari.server.controller.spi.SystemException;
import org.apache.ambari.server.controller.spi.TemporalInfo;
import org.apache.ambari.server.controller.spi.UnsupportedPropertyException;
/**
* Responsible for querying the back end for read requests
*/
public interface Query {
/**
* Add a property to the query.
* This is the select portion of the query.
*
* @param propertyId the property id
* @param temporalInfo temporal information for the property
*/
void addProperty(String propertyId, TemporalInfo temporalInfo);
/**
* Add a local (not sub-resource) property to the query.
* This is the select portion of the query.
*
* @param property the property id which contains the group, property name
* and whether the property is temporal
*/
void addLocalProperty(String property);
/**
* Obtain the properties of the query.
* These are the properties that make up the select portion of the query for which
* values are to be retrieved.
*
* @return the query properties
*/
Set<String> getProperties();
/**
* Execute the query.
*
* @return the result of the query.
*
* @throws UnsupportedPropertyException if the query or query predicate contains invalid non-existent properties
* @throws SystemException an internal error occurred
* @throws NoSuchResourceException the query didn't match any resources
* @throws NoSuchParentResourceException a specified parent resource doesn't exist
*/
Result execute()
throws UnsupportedPropertyException, SystemException, NoSuchResourceException, NoSuchParentResourceException;
/**
* Return the predicate used to identify the associated resource. This includes the primary key and
* all parent id's;
*
* @return the predicate used to identify the associated resource
*/
Predicate getPredicate();
/**
* Set the user provided predicated on this query.
* This predicate will be "AND'd" with the internal query to produce the final predicate.
*
* @param predicate the user provided predicate
*/
void setUserPredicate(Predicate predicate);
/**
* Set the page request information for this query.
*
* @param pageRequest the page request information
*/
void setPageRequest(PageRequest pageRequest);
/**
* Set the order request information on the query
*
* @param sortRequest the ordering info
*/
void setSortRequest(SortRequest sortRequest);
/**
* Set the corresponding renderer.
* The renderer is responsible for the rendering of the query result, including which
* properties are contained and the format of the result.
*
* @param renderer renderer for the query
*/
void setRenderer(Renderer renderer);
/**
* Set this Query's requestInfoProperties from the original request. This will contain information
* such as directives.
*
* @param requestInfoProperties a map a request info properties
*/
void setRequestInfoProps(Map<String, String> requestInfoProperties);
/**
* Get this Query's requestInfoProperties from the original request. This will contain information
* such as directives.
*
* @return a map a request info properties
*/
Map<String, String> getRequestInfoProps();
}