| /* |
| * 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. |
| */ |
| |
| namespace Apache.Ignite.Examples |
| { |
| using System; |
| using System.Collections; |
| using Apache.Ignite.Core; |
| using Apache.Ignite.Core.Cache; |
| using Apache.Ignite.Core.Cache.Affinity; |
| using Apache.Ignite.Core.Cache.Configuration; |
| using Apache.Ignite.Core.Cache.Query; |
| |
| /// <summary> |
| /// This example populates cache with sample data and runs several SQL and |
| /// full text queries over this data. |
| /// </summary> |
| public class SqlExample |
| { |
| /// <summary>Organization cache name.</summary> |
| private const string OrganizationCacheName = "dotnet_cache_query_organization"; |
| |
| /// <summary>Employee cache name.</summary> |
| private const string EmployeeCacheName = "dotnet_cache_query_employee"; |
| |
| /// <summary>Employee cache name.</summary> |
| private const string EmployeeCacheNameColocated = "dotnet_cache_query_employee_colocated"; |
| |
| [STAThread] |
| public static void Run() |
| { |
| var ignite = Ignition.TryGetIgnite() ?? Ignition.StartFromApplicationConfiguration(); |
| |
| Console.WriteLine(); |
| Console.WriteLine(">>> Cache query example started."); |
| |
| var employeeCache = ignite.GetOrCreateCache<int, Employee>( |
| new CacheConfiguration(EmployeeCacheName, new QueryEntity(typeof(Employee)))); |
| |
| var employeeCacheColocated = ignite.GetOrCreateCache<AffinityKey, Employee>( |
| new CacheConfiguration(EmployeeCacheNameColocated, new QueryEntity(typeof(Employee)))); |
| |
| var organizationCache = ignite.GetOrCreateCache<int, Organization>( |
| new CacheConfiguration(OrganizationCacheName, new QueryEntity(typeof(int), typeof(Organization)))); |
| |
| // Populate cache with sample data entries. |
| PopulateCache(employeeCache); |
| PopulateCache(employeeCacheColocated); |
| PopulateCache(organizationCache); |
| |
| // Run SQL query example. |
| SqlQueryExample(employeeCache); |
| |
| // Run SQL filter query example. |
| SqlFilterQueryExample(employeeCache); |
| |
| // Run SQL query with join example. |
| SqlJoinQueryExample(employeeCacheColocated); |
| |
| // Run SQL query with distributed join example. |
| SqlDistributedJoinQueryExample(employeeCache); |
| } |
| |
| /// <summary> |
| /// Queries names and salaries for all employees. |
| /// </summary> |
| /// <param name="cache">Cache.</param> |
| private static void SqlQueryExample(ICache<int, Employee> cache) |
| { |
| var qry = cache.Query(new SqlFieldsQuery("select name, salary from Employee")); |
| |
| Console.WriteLine(); |
| Console.WriteLine(">>> Employee names and their salaries:"); |
| |
| foreach (var row in qry) |
| Console.WriteLine($">>> [Name={row[0]}, salary={row[1]}{']'}"); |
| } |
| |
| /// <summary> |
| /// Queries employees that have specified salary. |
| /// </summary> |
| /// <param name="cache">Cache.</param> |
| private static void SqlFilterQueryExample(ICache<int, Employee> cache) |
| { |
| const int minSalary = 10000; |
| |
| var qry = cache.Query(new SqlFieldsQuery("select name from Employee where salary > ?", minSalary)); |
| |
| Console.WriteLine(); |
| Console.WriteLine($">>> Employees with salary > {minSalary}:"); |
| |
| foreach (var row in qry) |
| Console.WriteLine(">>> " + row[0]); |
| } |
| |
| /// <summary> |
| /// Queries employees that work for organization with provided name. |
| /// </summary> |
| /// <param name="cache">Cache.</param> |
| private static void SqlJoinQueryExample(ICache<AffinityKey, Employee> cache) |
| { |
| const string orgName = "Apache"; |
| |
| var qry = cache.Query(new SqlFieldsQuery( |
| "select Employee.name from Employee, \"dotnet_cache_query_organization\".Organization " + |
| "where Employee.organizationId = Organization._key and Organization.name = ?", orgName)); |
| |
| Console.WriteLine(); |
| Console.WriteLine($">>> Employees working for {orgName}:"); |
| |
| foreach (var row in qry) |
| Console.WriteLine(">>> " + row[0]); |
| } |
| |
| /// <summary> |
| /// Queries employees that work for organization with provided name. |
| /// </summary> |
| /// <param name="cache">Cache.</param> |
| private static void SqlDistributedJoinQueryExample(ICache<int, Employee> cache) |
| { |
| const string orgName = "Apache"; |
| |
| var qry = cache.Query(new SqlFieldsQuery( |
| "select Employee.name from Employee, \"dotnet_cache_query_organization\".Organization " + |
| "where Employee.organizationId = Organization._key and Organization.name = ?", orgName) |
| { |
| EnableDistributedJoins = true |
| }); |
| |
| Console.WriteLine(); |
| Console.WriteLine(">>> Employees working for " + orgName + " (distributed joins):"); |
| |
| foreach (var row in qry) |
| Console.WriteLine(">>> " + row[0]); |
| } |
| |
| /// <summary> |
| /// Populate cache with data for this example. |
| /// </summary> |
| /// <param name="cache">Cache.</param> |
| private static void PopulateCache(ICache<int, Organization> cache) |
| { |
| cache.Put(1, new Organization("Apache")); |
| cache.Put(2, new Organization("Microsoft")); |
| } |
| |
| /// <summary> |
| /// Populate cache with data for this example. |
| /// </summary> |
| /// <param name="cache">Cache.</param> |
| private static void PopulateCache(ICache<AffinityKey, Employee> cache) |
| { |
| cache.Put(new AffinityKey(1, 1), new Employee("James Wilson", 12500, 1)); |
| cache.Put(new AffinityKey(2, 1), new Employee("Daniel Adams", 11000, 1)); |
| cache.Put(new AffinityKey(3, 1), new Employee("Cristian Moss", 12500, 1)); |
| cache.Put(new AffinityKey(4, 2), new Employee("Allison Mathis", 25300, 2)); |
| cache.Put(new AffinityKey(5, 2), new Employee("Breana Robbin", 6500, 2)); |
| cache.Put(new AffinityKey(6, 2), new Employee("Philip Horsley", 19800, 2)); |
| cache.Put(new AffinityKey(7, 2), new Employee("Brian Peters", 10600, 2)); |
| } |
| |
| /// <summary> |
| /// Populate cache with data for this example. |
| /// </summary> |
| /// <param name="cache">Cache.</param> |
| private static void PopulateCache(ICache<int, Employee> cache) |
| { |
| cache.Put(1, new Employee("James Wilson", 12500, 1)); |
| cache.Put(2, new Employee("Daniel Adams", 11000, 1)); |
| cache.Put(3, new Employee("Cristian Moss", 12500, 1)); |
| cache.Put(4, new Employee("Allison Mathis", 25300, 2)); |
| cache.Put(5, new Employee("Breana Robbin", 6500, 2)); |
| cache.Put(6, new Employee("Philip Horsley", 19800, 2)); |
| cache.Put(7, new Employee("Brian Peters", 10600, 2)); |
| } |
| } |
| } |