模块 iofairy.functional

程序包 com.iofairy.tcf

类 Close<C>

java.lang.Object

com.iofairy.tcf.Close<C>

类型参数:

C - object type

public class Close<C>
extends Object

Close resources gracefully
优雅的关闭资源

Examples:
non-use of Close:

      Connection conn = null;
      PreparedStatement st = null;
      ResultSet rs = null;
      try {
           ...
      } catch (Exception e) {
           ...
      } finally {
          if (rs != null) {
              try {
                  rs.close();
              } catch (Exception e) {
                  e.printStackTrace();
              }
          }
          if (st != null) {
              try {
                  st.close();
              } catch (Exception e) {
                  e.printStackTrace();
              }
          }
          if (conn != null) {
              try {
                  conn.close();
              } catch (Exception e) {
                  e.printStackTrace();
              }
          }
      }
 

use Close:

      Connection conn = null;
      PreparedStatement st = null;
      ResultSet rs = null;
      try {
           ...
      } catch (Exception e) {
           ...
      } finally {
          Close.close(rs);
          Close.close(st);
          Close.close(conn);
      }
 

从以下版本开始:

0.0.3

字段概要

字段

限定符和类型	字段	说明
private C	c
private static Logger	log

构造器概要

构造器

限定符	构造器	说明
private	Close()

方法概要

限定符和类型	方法	说明
static <T extends AutoCloseable> void	close(T autoCloseable)	Closing resources.
static <T extends AutoCloseable> void	close(T autoCloseable, boolean isPrintTrace)	Closing resources.
static <T extends AutoCloseable> void	close(T autoCloseable, V2<T,Throwable> catchAction)	Simplify try-catch-finally block when closing resources.
static <T extends AutoCloseable> void	close(T autoCloseable, V2<T,Throwable> catchAction, V1<T> finallyAction)	Simplify try-catch-finally block when closing resources.
static void	closeAll(boolean isPrintTrace, AutoCloseable... autoCloseables)	Closing multi-resources that implements AutoCloseable.
static void	closeAll(AutoCloseable... autoCloseables)	Closing multi-resources that implements AutoCloseable.
static <T> Close<T>	of(T t)
void	tcf(VT1<C,Throwable> closeAction)	Closing resources that not implements AutoCloseable.
void	tcf(VT1<C,Throwable> closeAction, boolean isPrintTrace)	Closing resources that not implements AutoCloseable.
void	tcf(VT1<C,Throwable> closeAction, V2<C,Throwable> catchAction)	Simplify try-catch-finally block when closing resources that not implements AutoCloseable.
void	tcf(VT1<C,Throwable> closeAction, V2<C,Throwable> catchAction, V1<C> finallyAction)	Simplify try-catch-finally block when closing resources that not implements AutoCloseable.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

log

private static final Logger log

c

private C c

构造器详细资料

Close

private Close()

方法详细资料

of

public static <T> Close<T> of(T t)

close

public static <T extends AutoCloseable> void close(T autoCloseable)

Closing resources.
用于简化关闭资源的操作

类型参数:

T - type of resources

参数:

autoCloseable - resources that implements AutoCloseable

另请参阅:

close(AutoCloseable, boolean)

close

public static <T extends AutoCloseable> void close(T autoCloseable,
                                                   boolean isPrintTrace)

Closing resources.
用于简化关闭资源的操作

类型参数:

T - type of resources

参数:

autoCloseable - resources that implements AutoCloseable

isPrintTrace - isPrintTrace

close

public static <T extends AutoCloseable> void close(T autoCloseable,
                                                   V2<T,Throwable> catchAction)

Simplify try-catch-finally block when closing resources.
用于简化关闭资源的操作

类型参数:

T - type of resources

参数:

autoCloseable - resources that implements AutoCloseable

catchAction - catchAction

另请参阅:

close(AutoCloseable, V2, V1)

close

public static <T extends AutoCloseable> void close(T autoCloseable,
                                                   V2<T,Throwable> catchAction,
                                                   V1<T> finallyAction)

Simplify try-catch-finally block when closing resources.
用于简化关闭资源的操作

类型参数:

T - type of resources

参数:

autoCloseable - resources that implements AutoCloseable

catchAction - catchAction

finallyAction - finallyAction

closeAll

public static void closeAll(AutoCloseable... autoCloseables)

Closing multi-resources that implements AutoCloseable.
关闭多个实现了 AutoCloseable 资源

参数:

autoCloseables - autoCloseables

从以下版本开始:

0.1.1

closeAll

public static void closeAll(boolean isPrintTrace,
                            AutoCloseable... autoCloseables)

Closing multi-resources that implements AutoCloseable.
关闭多个实现了 AutoCloseable 资源

参数:

isPrintTrace - isPrintTrace

autoCloseables - autoCloseables

从以下版本开始:

0.1.1

tcf

public void tcf(VT1<C,Throwable> closeAction)

Closing resources that not implements AutoCloseable.
用于简化关闭资源的操作，且这些资源未实现 AutoCloseable 接口

参数:

closeAction - closeAction

另请参阅:

tcf(VT1, boolean)

tcf

public void tcf(VT1<C,Throwable> closeAction,
                boolean isPrintTrace)

Closing resources that not implements AutoCloseable.
用于简化关闭资源的操作，且这些资源未实现 AutoCloseable 接口

参数:

closeAction - closeAction

isPrintTrace - isPrintTrace

tcf

public void tcf(VT1<C,Throwable> closeAction,
                V2<C,Throwable> catchAction)

Simplify try-catch-finally block when closing resources that not implements AutoCloseable.
用于简化关闭资源的操作，且这些资源未实现 AutoCloseable 接口

参数:

closeAction - closeAction

catchAction - catchAction

另请参阅:

tcf(VT1, V2, V1)

tcf

public void tcf(VT1<C,Throwable> closeAction,
                V2<C,Throwable> catchAction,
                V1<C> finallyAction)

Simplify try-catch-finally block when closing resources that not implements AutoCloseable.
用于简化关闭资源的操作，且这些资源未实现 AutoCloseable 接口

参数:

closeAction - closeAction

catchAction - catchAction

finallyAction - finallyAction