octave> x1 = rand(10, 1); octave> y1 = rand(10, 1) + 0.7 * x1; octave> x2 = rand(10, 1); octave> y2 = rand(10, 1) - 0.7 * x2; octave> hold on; octave> plot (x1, y1, 'ro', 'markersize', 10); octave> plot (x2, y2, 'bo', 'markersize', 10);とすると、
function hello() printf("Hello, world!\n"); endfunction[cube.m]
function ret = cub(x) ret = x * x * x; endfunction;
octave> addpath("~/programming/octave");
octave> hello();
Hello, world!
octave> cube(9)
ans = 729
sudo apt-get install octave
octave> X0 = [0;0;0]; octave> H = [2,0,0;0,2,0;0,0,2]; octave> Q = [0;0;0]; octave> A = [1,1,1]; octave> B = [1]; octave> LB = []; octave> UB = []; octave> A_LB = []; octave> A_IN = [1,1,1]; octave> A_UB = []; octave> [X, OBJ, INFO, LAMBDA] = qp (X0, H, Q, A, B, LB, UB,A_LB, A_IN, A_UB); octave> X X = 0.33333 0.33333 0.33333 octave> OBJ OBJ = 0.33333 octave> LAMBDA LAMBDA = 0.66667いいですねぇ、使いやすいです。
#include <cstdio> #include <iostream> #include <vector> using namespace std; typedef vector<vector<long long> > matrix; long long MOD = 1000000007; int war[10][10]; matrix operator* (const matrix &x, const matrix &y) { int n = x.size(); matrix ret(n, vector<long long>(n, 0)); for (int i = 0; i < n; i++) for (int j = 0; j < n; j++) for (int k = 0; k < n; k++) { ret[i][j] += x[i][k] * y[k][j] % MOD; ret[i][j] %= MOD; } return ret; } vector<long long> operator* (const matrix &x, const vector<long long> &y) { int n = y.size(); vector<long long> ret(n); for (int i = 0; i < n; i++) for (int j = 0; j < n; j++) { ret[i] += x[i][j] * y[j] % MOD; ret[i] %= MOD; } return ret; } long long solve() { long long k; cin >> k; for (int i = 0; i < 10; i++) for (int j = 0; j < 10; j++) cin >> war[i][j]; matrix A(101, vector<long long>(101)); for (int k = 0; k < 10; k++) for (int i = 0; i < 10; i++) for (int j = 0; j < 10; j++) if (!war[i][k] && !war[k][j] && !war[i][j]) A[10*i+k][10*k+j] = 1; for (int i = 1; i < 10; i++) for (int j = 0; j < 10; j++) A[100][10*i+j] = 1; A[100][100] = 1; vector<long long> x(101); x[100] = 9; for (int i = 0; i < 10; i++) for (int j = 0; j < 10; j++) if (!war[i][j]) x[10*i+j] = 1; --k; while (k > 0) { if (k & 1) x = A * x; k >>= 1; A = A * A; } return x[100]; } int main() { int t; scanf("%d", &t); for (int i = 0; i < t; i++) { printf("Case #%d: ", i+1); long long ret = solve(); cout << ret << endl; } return 0; }
| id | account_no | name | deposit |
| 1 | 12345678 | yamada taro | 1000 |
| 2 | 77777777 | sato hanako | 400000 |
<dependencies> <dependency> <groupId>org.apache.ibatis</groupId> <artifactId>ibatis-sqlmap</artifactId> <version>2.3.4.726</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.6</version> </dependency> </dependencies>
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE sqlMapConfig PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN" "http://www.ibatis.com/dtd/sql-map-config-2.dtd"> <sqlMapConfig> <settings useStatementNamespaces="true" /> <transactionManager type="JDBC"> <dataSource type="SIMPLE"> <property name="JDBC.Driver" value="com.mysql.jdbc.Driver" /> <property name="JDBC.ConnectionURL" value="jdbc:mysql://localhost:3306/sample" /> <property name="JDBC.Username" value="user" /> <property name="JDBC.Password" value="password" /> </dataSource> </transactionManager> <sqlMap resource="ibatis/employee-mapping.xml" /> </sqlMapConfig>DBの設定とマッピングファイルのパスを指定します。
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE sqlMap PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN" "http://ibatis.apache.org/dtd/sql-map-2.dtd"> <sqlMap namespace="employee"> <select id="select" resultClass="Employee"> <![CDATA[ select id, name, age, department from employee where id = #value# ]]> </select> <select id="selectAll" resultClass="Employee"> <![CDATA[ select id, name, age, department from employee ]]> </select> <update id="update" parameterClass="Employee"> <![CDATA[ update employee set name = #name#, age = #age#, department = #department# where id = #id# ]]> </update> <insert id="insert" parameterClass="Employee"> <![CDATA[ insert into employee(name, age, department) values(#name#, #age#, #department#) ]]> </insert> <delete id="delete" parameterClass="Employee"> <![CDATA[ delete from employee where name = #name# and age = #age# and department = #department# ]]> </delete> </sqlMap>
CREATE TABLE `employee` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(32) DEFAULT NULL, `age` int(11) DEFAULT NULL, `department` varchar(32) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB
public class Employee { public int id; public String name; public int age; public String department; public int getId() { return id; } public Employee(){} public Employee(String name, int age, String department) { this.name = name; this.age = age; this.department = department; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getDepartment() { return department; } public void setDepartment(String department) { this.department = department; } public String toString() { StringBuilder sb = new StringBuilder(); sb.append(id); sb.append(" "); sb.append(name); sb.append(" "); sb.append(age); sb.append(" "); sb.append(department); return sb.toString(); } }
import java.io.Reader; import java.util.List; import com.ibatis.common.resources.Resources; import com.ibatis.sqlmap.client.SqlMapClient; import com.ibatis.sqlmap.client.SqlMapClientBuilder; public class Main { public static void main(String[] args) throws Exception { Reader reader = Resources.getResourceAsReader("ibatis/ibatis-config.xml"); SqlMapClient sqlMap = SqlMapClientBuilder.buildSqlMapClient(reader); /* * select an employee by his/her id */ Employee employee = (Employee) sqlMap.queryForObject("employee.select", 1); System.out.println(employee); /* * select all employees */ List<Employee> employees = sqlMap.queryForList("employee.selectAll"); /* * update the selected employee */ employee.setAge(employee.getAge()+1); sqlMap.update("employee.update", employee); /* * insert a new employee */ sqlMap.insert("employee.insert", new Employee("nichole", 22, "Finance")); employees = sqlMap.queryForList("employee.selectAll"); /* * delete an employee */ sqlMap.delete("employee.delete", new Employee("nichole", 22, "Finance")); employees = sqlMap.queryForList("employee.selectAll"); } }シンプルで使いやすいですね。
<?xml version="1.0" encoding="ISO-8859-1" ?> <!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN" "http://struts.apache.org/dtds/struts-config_1_3.dtd"> <struts-config> <action-mappings> <action path="/hoge" type="org.springframework.web.struts.DelegatingActionProxy"/> </action-mappings> <message-resources parameter="MessageResources" /> <plug-in className="org.springframework.web.struts.ContextLoaderPlugIn"> <set-property property="contextConfigLocation" value="/WEB-INF/applicationContext.xml" /> </plug-in> </struts-config>次に、Springの設定ファイル。これはいつもどおりに書けばOKです。
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"> <context:component-scan base-package="main.java.controller" /> <context:component-scan base-package="main.java.service" /> </beans>次にコントローラークラス。リクエストを処理するパスと同じ名前のBean名をつけます。
package main.java.controller; import java.io.PrintWriter; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import main.java.service.CalcService; import org.apache.struts.action.Action; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; @Controller("/hoge") public class HogeAction extends Action { @Autowired CalcService service; @Override public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { int x = 10; int y = 2; PrintWriter writer = response.getWriter(); writer.write(x + " + " + y + " = " + service.add(x, y) + "<br/>"); writer.write(x + " - " + y + " = " + service.sub(x, y) + "<br/>"); writer.write(x + " * " + y + " = " + service.mul(x, y) + "<br/>"); writer.write(x + " / " + y + " = " + service.div(x, y) + "<br/>"); return null; } }最後に、サービスクラス。コントローラーから@Autowiredで注入される機能です。
package main.java.service; public interface CalcService { public int add(int x, int y); public int sub(int x, int y); public int mul(int x, int y); public int div(int x, int y); }
package main.java.service; import org.springframework.stereotype.Service; @Service public class CalcServiceImpl implements CalcService { @Override public int add(int x, int y) { return x + y; } @Override public int sub(int x, int y) { return x - y; } @Override public int mul(int x, int y) { return x * y; } @Override public int div(int x, int y) { return x / y; } }これで、MVCフレームワークとDI×AOPフレームワークの連携ができました。次の目標はORMとの連携です。
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"> <aop:aspectj-autoproxy /> <context:component-scan base-package="main.java.component" /> <context:component-scan base-package="main.java.aop" /> </beans>次に、アドバイスクラス。まず@ComponentでBean定義します。そして、@Aspectを付与することでこのクラスをアドバイスクラスとして使うことをSpringに教えてあげます。メソッドに@After、@Before、@Aroundを付与することで、それぞれAfter Advice、Before Advice、Around Adviceとして動作させることができます。
package main.java.aop; import org.aspectj.lang.ProceedingJoinPoint; import org.aspectj.lang.annotation.After; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Before; import org.springframework.stereotype.Component; @Aspect @Component public class AdviceExample { /* * before advice */ @Before("PointCutDefine.allComponentDir()") public void before() { System.out.println("AdviceExample#before()"); } /* * after advice */ @After("PointCutDefine.allComponentDir()") public void after() { System.out.println("AdviceExample#after()"); } /* * around advice */ @Around("PointCutDefine.allComponentDir()") public Object around(ProceedingJoinPoint method) throws Throwable { Object ret = null; System.out.println("AdviceExample#around() -- begin"); ret = method.proceed(); System.out.println("AdviceExample#around() -- end"); return ret; } }最後に、ポイントカットを定義しているクラスです。ポイントカットの定義は各アドバイスの中で個別に定義することもできますが、ポイントカット定義のためのクラスを作成し共通で使用されるポイントカットを一ヶ所にまとめておくとスッキリすると思います。
package main.java.aop; import org.aspectj.lang.annotation.Pointcut; public class PointCutDefine { @Pointcut("execution(* main.java.component.*.*(..))") public void allComponentDir() {} @Pointcut("execution(* main.java.service.*.*(..))") public void allServiceDir() {} @Pointcut("execution(* main.java.controller.*.*(..))") public void allControllerDir() {} }あくまでも個人的な意見ですが、アノテーション使った方が美しいですね。