package entity.main;import java.util.Set; import javax.persistence.CascadeType;import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.FetchType; import javax.persistence.GeneratedValue; import javax.persistence.Id; import javax.persistence.JoinColumn; import javax.persistence.ManyToOne; import javax.persistence.OneToMany; import javax.persistence.Table; import org.hibernate.annotations.GenericGenerator; import entity.ITree; /** * menu for IE system * @author vivid * 2014-11-19 */ @Entity @Table(name="ie_main_menu") @GenericGenerator(name = "systemUUID", strategy = "uuid") public class MainMenu{ private String id; //identify node // private String parentId; //parent node's id private String text; //contents to display private String leaf; //0 false,1 means it's leaf private String iconCls; private String treeSign; // like "1-1,1-2-1" private String url; private MainMenu parent; private Set children; public MainMenu() {super();} @Id @GeneratedValue(generator="systemUUID") @Column(length=50) public String getId() { return id; } public void setId(String id) { this.id = id; } // public String getParentId() { // return parentId; // } // public void setParentId(String parentId) {// this.parentId = parentId;// } public String getText() { return text; } public void setText(String text) { this.text = text; } public String getLeaf() { return leaf; } public void setLeaf(String leaf) { this.leaf = leaf; } public String getIconCls() { return iconCls; } public void setIconCls(String iconCls) { this.iconCls = iconCls; } public String getTreeSign() { return treeSign; } public void setTreeSign(String treeSign) { this.treeSign = treeSign; } public String getUrl() { return url; } public void setUrl(String url) { this.url = url; } //many children to one parent and the parentId is foreign key @ManyToOne @JoinColumn(name="parentId") public MainMenu getParent() { return parent; } public void setParent(MainMenu parent) { this.parent = parent; } //mappedBy indicates the many part's attribute @OneToMany(mappedBy="parent",cascade=CascadeType.ALL,fetch=FetchType.EAGER) public Set getChildren() { return children; } public void setChildren(Set children) { this.children = children; } } //this is the first time to write blog.
first to upload the code, wrong style and modify again