parent-child

问题 I am developing an application that requires the value of multiple checkboxes. I have nested lists containing checkboxes. The current functionality is this: When a parent is checked, all children are checked under it. When a child is checked, the parent is not selected. I need to add this functionality: When a child is unchecked after the parent is checked, the parent unchecks, but leaves the children checked. $('input[name="level-1"],input[name="level-2"]').bind('click', function () { $(

问题 Entity Framework 5.0 Code first with existing database. Reverse engineered the classes with power tools. Everything is working great. Database has two tables. One parent and one child with foreign key back to parent ID. ID's are all int with auto increment. I've added a number of parent records and now want to add child records to specific parents. The only way I can see to do this is find the appropriate parent ID by searching the Parents table for a name or some other property and return

问题 I cant figure out why this won't work. Is there something wrong with this code? The function is being called I checked with an alert but it just won't close the window. $('#click').click(function() { var win = window.open("test3.html","something","width=550,height=170"); }); function closeit(){ win.close(); } and on test3.html window.opener.closeit(); 回答1: Your win variable is scoped to the function that handles the click event. Put it in a scope shared by both that function and closeit . In

问题 i have a Question about referencing ParentEntities from Child Entites ir If i have something like this: Parent.java: @Entity(name ="Parent") public class Parent { @Id @Generate..... @Column private int id; @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "parent") private Set<Child> children; simple ... getter and setter ... } And the Child.java: @Entity(name ="Child") public class Child{ @Id @Generate.... @Column private int id; @ManyToOne private Parent parent; ...

问题 i have a Question about referencing ParentEntities from Child Entites ir If i have something like this: Parent.java: @Entity(name ="Parent") public class Parent { @Id @Generate..... @Column private int id; @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "parent") private Set<Child> children; simple ... getter and setter ... } And the Child.java: @Entity(name ="Child") public class Child{ @Id @Generate.... @Column private int id; @ManyToOne private Parent parent; ...

问题 Here a sample of Go code with an Interface, a Parent Struct and 2 Children Structs package main import ( "fmt" "math" ) // Shape Interface : defines methods type ShapeInterface interface { Area() float64 GetName() string PrintArea() } // Shape Struct : standard shape with an area equal to 0.0 type Shape struct { name string } func (s *Shape) Area() float64 { return 0.0 } func (s *Shape) GetName() string { return s.name } func (s *Shape) PrintArea() { fmt.Printf("%s : Area %v\r\n", s.name, s

问题 I have a child component ( child.component ) which can be used in two parent components : parentA.component parentB.component In this case, it's possible to make several templates like this : <parentA> <child></child> </parentA> <parentA> <parentB> <child></child> </parentB> </parentA> For some reasons, the child.component need to detect if the direct parent is parentB. I used '@Inject(forwardRef(() => parentBComponent)) private _directParent:parentBComponent' to do this: child.component.ts

问题 I would like to generate the 'hierarchy id' values which is denoted in red. The value is the lowest level of id in the hierarchy. The highest level of hierarchy is 'ALL Service Groups' and the lowest level is 'LL800_GB05'. They are related with Parent ID and ID. The attached image is only a sample set. Update-- I have formed a relationship and lineage. Now i know the highest member of Hierarchy.I want to associate the lowest childID for each row in a new column. I tired doing an inner join on

问题 I've got a Validator class and a UserValidator class which extends from it. My Validator has a public method setRule(...) with public visibility. When I extend from it I want to change the visibility of the setRule(...) parent method to private/protected within the child so that it's only visible for the child and no outsiders can call this method from the child. Is that possible? If so, how could I achieve it? 回答1: From an architectural point of view this is not recommended. As already

问题 I have heirarchical data in sql server. Follwing are my data heirarcy tree. Id Name ParentID 1124 ABC 2 1125 BCD 1124 1126 EFG 1124 1127 HIJ 1126 1128 KLM 1126 1129 OPQ 1124 1130 RST 1124 1131 UVW 1130 1132 XYZ 1131 1133 ZYA1 1124 Now i want following result from above table. In that i want path from root (parent) with all child till last child. Id Name ParentID PATH 1124 ABC 2 ABC 1125 BCD 1124 ABC/BCD 1126 EFG 1124 ABC/EFG 1127 HIJ 1126 ABC/EFG/HIJ 1128 KLM 1126 ABC/EFG/KLM 1129 OPQ 1124