default-value

问题 If I have an entity like this private Boolean test; I can set its default value like this: @Column(columnDefinition = "boolean default false") But my problem is how can I set a default value for my custom class? Assume I have a User class, like this: public class User { @Id @GeneratedValue Long userID; String eMail; @OneToOne(fetch = FetchType.LAZY,targetEntity = LoginCredential.class) @JoinColumn(name = "userID",referencedColumnName = "userID") @JsonIgnore private LoginCredential

问题 A form that I have at the moment has the field, Skill_Name . There is a subform with two fields; Employee_ID (A combo box of all Employee_IDs) and Emp_Skill_ID . Upon selecting an Employee_ID , I'd like the Emp_Skill_ID to autofill in the following format: Employee_ID _ Skill_Name Example: If Employee ID = 1234567, and Skill Name = AutoElec , I want the Emp_Skill_ID to automatically be 1234567_AutoElec . If that's at all possible, it'd be much appreciated if someone could tell me how to do it

问题 Hi friends from SO! This code used to be working, but it seems like it stop working when I cloned the database. There's a table called maps, which has some default values, like maximum. As far as I understand, if my INSERT code has no value, then, the dafault value will be used. This is what I'm doing: These values might be there, as they might not be there. $scan->maximo_exploracion = addslashes($_GET['scan_maximo_exploracion']); $scan->proceso_analisis = addslashes($_GET['scan_proceso

问题 How to set my first value (default value) in spinner as empty. Means, until the user selects value from list, spinner will have no value. I tried below list.add(""); But, it won't work. Below is my code : if(values.contains("options")){ spinner.setOnItemSelectedListener(MyClass.this); List<String> list = new ArrayList<String>(); list.add(""); list.add("Test"); list.add("Working"); ArrayAdapter<String> adapter = new ArrayAdapter<String>(mContext, android.R.layout.simple_spinner_item, list) {};

问题 How do I get this to work, I've tried with and without new keyword: object Main extends App { override def main (args : Array[String] = new Array("default argument")) { println("args(0) = " + args(0)) } } http://ideone.com/5AyTxy (I have tried other [1, 2] methods but I think that its val is causing issues) Docs: http://docs.scala-lang.org/sips/completed/named-and-default-arguments.html#default_arguments PS: I should confirm that I want this to be bound to the args name; rather than to

问题 I'm trying to come up with a function that lets me pass in any object and a default value, and if the object cannot be casted to the type of the default value, it should return that default value. If the object is null, it should also return the default value. It should be used like this: Integer myVar = ConversionHelper.initialize( "123", 0 ) // should return Integer(123) Integer myVar = ConversionHelper.initialize( "hello", 0 ) // should return Integer(0) and so on I tried with the

问题 I use this trigger delimiter || create TRIGGER column_a_to_default BEFORE INSERT ON `property` FOR EACH ROW BEGIN IF NEW.primary_image = '' THEN SET NEW.primary_image = default(NEW.primary_image); END IF; END; || delimiter ; If I insert into the table the trigger throws an error: Field 'primary_image' doesn't have a default value. But it does! What is wrong here? It seems like the trigger isn't aware of default values! EDIT Table Create script CREATE TABLE IF NOT EXISTS `property` ( `id`

问题 I have a DropDownChoice like below: final DropDownChoice<Term> terms = new DropDownChoice("terms", new Model<Term>(), new Model(new ArrayList(termDao.findAll())), new IChoiceRenderer<Term>() { public Object getDisplayValue(Term object) { return object.getIdentifier(); } public String getIdValue(Term object, int index) { return object.getId().toString(); } }); I want to have "Choose All" instead of "Choose one". How can I do that? 回答1: I tried Goli's suggestion under wicket 6.4 and it doesn't

问题 I'm using the latest version of the jQuery Validator plugin along with jQuery (1.6.2). In my optional field for phone number, I have a defaultValue . HTML: <input type="text" class="autoclear blur" value="your telephone number" name="Phone" /> I installed a custom method for validating phone numbers as per this thread. The idea is that even though the field is optional, I still want to validate it if/when text is entered. jQuery/JavaScript: $(document).ready(function() { var nameMsg = "Please

问题 I'd like some clarification on the behaviour of default values in MySQL 5.5 & 5.6. Lets say we have the following table on a MySQL 5.5 server: CREATE TABLE `test` ( `TestColumn` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ) ENGINE=INNODB DEFAULT CHARSET=utf8; I am able to run the following query without issue: INSERT INTO `test` VALUES (NULL); Which creates the following row: TestColumn 2014-02-20 14:55:05 Now if I repeat the same test on a MySQL 5.6 server, the insert fails: Error Code: