通过如下的代码可以基于Default版本创建一个新的子版本:
SeConnection conn = getConn();
if (conn != null) {
try {
SeVersion v_1 = new SeVersion(conn, SeVersion.SE_QUALIFIED_DEFAULT_VERSION_NAME);
v_1.setName("v_1");
v_1.create(true, v_1);
} catch (SeException e) {
e.printStackTrace();
} finally {
try {
conn.close();
} catch (SeException e) {
e.printStackTrace();
}
}
}
至于删除版本就更容易了:
SeConnection conn = getConn();
if (conn != null) {
try {
SeVersion v_1 = new SeVersion(conn, "v_1");
v_1.delete();
} catch (SeException e) {
e.printStackTrace();
} finally {
try {
conn.close();
} catch (SeException e) {
e.printStackTrace();
}
}
}
进行版本编辑关键在于对版本状态(State)的管理,下面的代码展示了如何从一个版本数据集中删除一条记录:
SeConnection conn = getConn();
if (conn != null) {
try {
SeVersion version = new SeVersion(conn, "v1");
SeObjectId oldStateId = version.getStateId();
SeState oldState = new SeState(conn, oldStateId);
if(oldState.isOpen()){
try {
oldState.close();
} catch (Exception e) {
e.printStackTrace();
}
}
SeState newState = new SeState(conn);
newState.create(oldStateId);
version.changeState(newState.getId());
SeDelete delete = new SeDelete(conn);
delete.setState(newState.getId(),
new SeObjectId(SeState.SE_NULL_STATE_ID),
SeState.SE_STATE_DIFF_NOCHECK);
delete.fromTable("TEST", "OBJECTID=3");
delete.close();
} catch (SeException e) {
e.printStackTrace();
} finally {
try {
conn.close();
} catch (SeException e) {
e.printStackTrace();
}
}
}