parameterized

Java map, key = class, value = instance of that class

由 百般思念 提交于 2019-11-28 06:54:55
I'm not sure what I want to do is possible, but if it is, I want to find out how. Basically, I want to create a Map where the key is a class ( java.lang.Class ), and value for that entry is an instance of that class. Currently I have private Map<Class<?>, Object> myMap = new HashMap<Class<?>, Object>(); However, this means any Object can be placed in the Map. If it is possible, I want to make it, so only an instance of the class in the key can be placed in the map. Is there any way to use the ? parametrization on the Class to ensure this? Also, I found there could be a possible memory leak

Pass reference of object to a new Thread

由 走远了吗. 提交于 2019-11-28 06:02:48
问题 I have an object that contains a very large 3D-array of doubles and I need to start a new thread that need the data of this array, so I will either need to start a new thread passing the object (which contains a whole lot of other data too) to the new thread or I just pass the 3D-array to the new thread. For the first solution I would simply do the following: MyClass { ... public double[,,] _data = new double[x,y,z]; ... } MyMethod(object MyObject) { //do stuff with (MyObject as MyClass) }

ParameterizedRowMapper That Maps Object List to Object

由 与世无争的帅哥 提交于 2019-11-28 05:35:32
问题 I am trying to set the Parent List in a ParameterizedRowMapper how is this written or approached. I have two Objects one for parent and one for children however children contains a ListThe parents for each child are stored in a separate table in the database and the mapping is 1 - many. The select for the records for the parents will be done in a separate ResultSet. Will the mapping have to be done separately ( separate ParameterizedRowMapper ), if so how will i have to write the

ASP Classic Named Parameter in Paramaterized Query: Must declare the scalar variable

由 旧巷老猫 提交于 2019-11-28 01:34:37
I'm trying to write a parameterized query in ASP Classic, and it's starting to feel like i'm beating my head against a wall. I'm getting the following error: Must declare the scalar variable "@something". I would swear that is what the hello line does, but maybe i'm missing something... <% OPTION EXPLICIT %> <!-- #include file="../common/adovbs.inc" --> <% Response.Buffer=false dim conn,connectionString,cmd,sql,rs,parm connectionString = "Provider=SQLOLEDB.1;Integrated Security=SSPI;Data Source=.\sqlexpress;Initial Catalog=stuff" set conn = server.CreateObject("adodb.connection") conn.Open

Get class of generic

由 别来无恙 提交于 2019-11-27 21:51:30
问题 My class starts with public abstract class LastActionHero<H extends Hero>(){ Now somewhere in the code I want to write H.class but that isn't possible (like String.class or Integer.class is). Can you tell me how I can get the Class of the generic? 回答1: You can provide the type dynamically, however the compiler doesn't do this for you automagically. public abstract class LastActionHero<H extends Hero>(){ protected final Class<H> hClass; protected LastActionHero(Class<H> hClass) { this.hClass =

Excluding a non param test in parameterized test class

由 半城伤御伤魂 提交于 2019-11-27 19:14:29
Is there any annotation in JUnit to exclude a non param test in parameterized test class? Matthew Madson JUnit 5 As of Junit 5.0.0 you can now annotate your test methods with @ParameterizedTest . So no need for inner classes. There are many ways to supply the arguments to the parameterized test apart from ValueSource as shown below. See the official junit user guide for details: import org.junit.jupiter.api.Test; import org.junit.jupiter.api.ParameterizedTest; import org.junit.jupiter.params.provider.ValueSource; public class ComponentTest { @ParameterizedTest @ValueSource(strings = { "racecar

Table-Valued Functions in ORACLE 11g ? ( parameterized views )

由 本小妞迷上赌 提交于 2019-11-27 13:19:27
I've seen discussions about this in the past, such as here . But I'm wondering if somewhere along the line, maybe 10g or 11g (we are using 11g), ORACLE has introduced any better support for "parameterized views", without needing to litter the database with all sorts of user-defined types and/or cursor definitions or sys_context variables all over. I'm hoping maybe ORACLE's added support for something that simply "just works", as per the following example in T-SQL: CREATE FUNCTION [dbo].[getSomeData] (@PRODID ROWID) RETURNS TABLE AS RETURN SELECT PRODID, A, B, C, D, E FROM MY_TABLE WHERE PRODID

How to pass string parameter with `IN` operator in stored procedure SQL Server 2008

由 北城以北 提交于 2019-11-27 08:26:33
I have a stored procedure when I execute it I got error Conversion failed when converting the varchar value '+@dptId+' to data type int I am getting DepartmentId as a string like (1,3,5,77) and am passing this to my stored procedure. SQL FIDDLE create table dummy (id int,name varchar(100),DateJoining Datetime, departmentIt int) insert into dummy values (1,'John','2012-06-01 09:55:57.257',1); insert into dummy values(2,'Amit','2013-06-01 09:55:57.257',2); insert into dummy values(3,'Naval','2012-05-01 09:55:57.257',3); insert into dummy values(4,'Pamela','2012-06-01 09:55:57.257',4); insert

parameterized query in ms access 2003 using vba

由 |▌冷眼眸甩不掉的悲伤 提交于 2019-11-27 07:24:29
问题 Ok. I want to use parameterized queries to avoid dealing with embedded double or single quotes (" or ') in my data. As a simple example, what would the VBA code look like for the parameterized verion of this? Dim qstr as String Dim possiblyDangerousString as String qstr = "SELECT MyTable.LastName from MyTable WHERE MyTable.LastName = '" & possiblyDangerousString & "';" I did not cut and paste this from my code (on a different box right now), so there might be a typo. Once I figure out this

Use reflection to create a generic parameterized class in Java

由 落爺英雄遲暮 提交于 2019-11-27 06:03:56
问题 How can I use reflection to create a generic parameterized class in Java? I have public class SomeClass<T> { public SomeClass<T>() { } } and I need an instance of it. I've tried variations of Class c = Class.forName("SomeClass"); but could not find a syntax that would allow me to get an appropriately typed instance, like, say SomeType instance = (SomeType)Class.forName("SomeClass<SomeType>").createInstance(); So, how could I go about doing this? 回答1: Java uses erasure-based generics (i.e.,
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