您好我在尝试更改 sql 容器中新添加项目的属性时收到 SQLIntegrityConstraintViolationException。我有一个非常简单的表:
CREATE TABLE person(
id int not null primary key,
name varchar(30),
surname varchar(30),
age int
)
我正在尝试一个一个地设置所有属性,但是在第一次完成(id)之后,下一个最终会抛出一个异常:
java.sql.SQLIntegrityConstraintViolationException: integrity constraint violation: unique constraint or index violation; SYS_PK_10096 table: PERSON
at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
at org.hsqldb.jdbc.JDBCPreparedStatement.fetchResult(Unknown Source)
at org.hsqldb.jdbc.JDBCPreparedStatement.executeUpdate(Unknown Source)
at com.vaadin.data.util.sqlcontainer.query.TableQuery.executeUpdateReturnKeys(TableQuery.java:588)
at com.vaadin.data.util.sqlcontainer.query.TableQuery.storeRow(TableQuery.java:284)
at com.vaadin.data.util.sqlcontainer.SQLContainer.itemChangeNotification(SQLContainer.java:1069)
at com.vaadin.data.util.sqlcontainer.ColumnProperty.setValue(ColumnProperty.java:207)
at slawek.MyVaadinUI.init(MyVaadinUI.java:93)
at com.vaadin.ui.UI.doInit(UI.java:610)
这是代码:
FormLayout form = new FormLayout();
TextField idTextField = new TextField("Id");
TextField nameTextField = new TextField("Name");
TextField surnameTextField = new TextField("Surname");
TextField ageTextField = new TextField("Age");
Button submit = new Button("Add user");
form.addComponents(idTextField, nameTextField, surnameTextField, ageTextField, submit);
layout.addComponent(form);
Item item = container.getItem(container.addItem());
container.setAutoCommit(true);
Property propertyId = item.getItemProperty("ID");
Property propertyName = item.getItemProperty("NAME");
Property propertySurname = item.getItemProperty("SURNAME");
Property propertyAge = item.getItemProperty("AGE");
propertyId.setValue(3);
propertyName.setValue("someName"); // line number 93
propertySurname.setValue("someSurname");
propertyAge.setValue(51);
在数据库中,我只能看到添加了一个仅设置了 ID 号的新行。其余字段为空。我究竟做错了什么?