I have recently started learning hibernate and I got the following doubts
I have recently started learning hibernate and I got the following doubts
Correct me if I am wrong.
If hbm2ddl.auto is set to create, every time hibernate tries to interact with any table, that table will be dropped first.
Because hibernate drops a table every time it interacts with it, if I want to update a record I cannot configure hbm2ddl value as create.
java hibernate jdbc frameworks relational-database
asked Nov 15 '18 at 17:03
Kilarapu YethendraKilarapu Yethendra
302
add a comment |
I have recently started learning hibernate and I got the following doubts
Correct me if I am wrong.
If hbm2ddl.auto is set to create, every time hibernate tries to interact with any table, that table will be dropped first.
Because hibernate drops a table every time it interacts with it, if I want to update a record I cannot configure hbm2ddl value as create.
java hibernate jdbc frameworks relational-database
asked Nov 15 '18 at 17:03
Kilarapu YethendraKilarapu Yethendra
302
add a comment |
I have recently started learning hibernate and I got the following doubts
Correct me if I am wrong.
If hbm2ddl.auto is set to create, every time hibernate tries to interact with any table, that table will be dropped first.
Because hibernate drops a table every time it interacts with it, if I want to update a record I cannot configure hbm2ddl value as create.
java hibernate jdbc frameworks relational-database
asked Nov 15 '18 at 17:03
Kilarapu YethendraKilarapu Yethendra
302
I have recently started learning hibernate and I got the following doubts
Correct me if I am wrong.
If hbm2ddl.auto is set to create, every time hibernate tries to interact with any table, that table will be dropped first.
Because hibernate drops a table every time it interacts with it, if I want to update a record I cannot configure hbm2ddl value as create.
java hibernate jdbc frameworks relational-database
java hibernate jdbc frameworks relational-database
asked Nov 15 '18 at 17:03
Kilarapu YethendraKilarapu Yethendra
302
asked Nov 15 '18 at 17:03
Kilarapu YethendraKilarapu Yethendra
302
asked Nov 15 '18 at 17:03
Kilarapu YethendraKilarapu Yethendra
302
asked Nov 15 '18 at 17:03
Kilarapu YethendraKilarapu Yethendra
302
asked Nov 15 '18 at 17:03
Kilarapu YethendraKilarapu Yethendra
302
302
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
The table is not dropped and recreated every time hibernate interacts with it -- it's dropped and recreated when the SessionFactory is initialized. This usually means when your application starts up. So if you are doing some tests where you want to start with a clean database each time the application runs, setting hbm2ddl.auto to "create" would be reasonable.
For more, see the community documentation and this previous question.
answered Nov 15 '18 at 17:19
borisboris
11114
Thanks for the quick response
– Kilarapu Yethendra
Nov 15 '18 at 17:22
add a comment |
If you will configure value as create you can update a record , but when your application is down , and you will restart it all changes will disappear.
So actually in this case its better to use update.
In case of update it only updates schema , you can define some schema sql file and use it on database side , and simply configure hbm2ddlauto as update.
Here are possible values of hbm2.ddlauto:
validate: validate the schema, makes no changes to the database.
update: update the schema.
create: creates the schema, destroying previous data.
create-drop: drop the schema when the SessionFactory is closed
explicitly, typically when the application is stopped.
answered Nov 15 '18 at 17:24
Mykhailo MoskuraMykhailo Moskura
839113
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53324541%2fi-have-recently-started-learning-hibernate-and-i-got-the-following-doubts%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
The table is not dropped and recreated every time hibernate interacts with it -- it's dropped and recreated when the SessionFactory is initialized. This usually means when your application starts up. So if you are doing some tests where you want to start with a clean database each time the application runs, setting hbm2ddl.auto to "create" would be reasonable.
For more, see the community documentation and this previous question.
answered Nov 15 '18 at 17:19
borisboris
11114
Thanks for the quick response
– Kilarapu Yethendra
Nov 15 '18 at 17:22
add a comment |
The table is not dropped and recreated every time hibernate interacts with it -- it's dropped and recreated when the SessionFactory is initialized. This usually means when your application starts up. So if you are doing some tests where you want to start with a clean database each time the application runs, setting hbm2ddl.auto to "create" would be reasonable.
For more, see the community documentation and this previous question.
answered Nov 15 '18 at 17:19
borisboris
11114
Thanks for the quick response
– Kilarapu Yethendra
Nov 15 '18 at 17:22
add a comment |
The table is not dropped and recreated every time hibernate interacts with it -- it's dropped and recreated when the SessionFactory is initialized. This usually means when your application starts up. So if you are doing some tests where you want to start with a clean database each time the application runs, setting hbm2ddl.auto to "create" would be reasonable.
For more, see the community documentation and this previous question.
answered Nov 15 '18 at 17:19
borisboris
11114
The table is not dropped and recreated every time hibernate interacts with it -- it's dropped and recreated when the SessionFactory is initialized. This usually means when your application starts up. So if you are doing some tests where you want to start with a clean database each time the application runs, setting hbm2ddl.auto to "create" would be reasonable.
For more, see the community documentation and this previous question.
answered Nov 15 '18 at 17:19
borisboris
11114
answered Nov 15 '18 at 17:19
borisboris
11114
answered Nov 15 '18 at 17:19
borisboris
11114
answered Nov 15 '18 at 17:19
borisboris
11114
11114
Thanks for the quick response
– Kilarapu Yethendra
Nov 15 '18 at 17:22
add a comment |
Thanks for the quick response
– Kilarapu Yethendra
Nov 15 '18 at 17:22
Thanks for the quick response
– Kilarapu Yethendra
Nov 15 '18 at 17:22
Thanks for the quick response
– Kilarapu Yethendra
Nov 15 '18 at 17:22
add a comment |
If you will configure value as create you can update a record , but when your application is down , and you will restart it all changes will disappear.
So actually in this case its better to use update.
In case of update it only updates schema , you can define some schema sql file and use it on database side , and simply configure hbm2ddlauto as update.
Here are possible values of hbm2.ddlauto:
validate: validate the schema, makes no changes to the database.
update: update the schema.
create: creates the schema, destroying previous data.
create-drop: drop the schema when the SessionFactory is closed
explicitly, typically when the application is stopped.
answered Nov 15 '18 at 17:24
Mykhailo MoskuraMykhailo Moskura
839113
add a comment |
If you will configure value as create you can update a record , but when your application is down , and you will restart it all changes will disappear.
So actually in this case its better to use update.
In case of update it only updates schema , you can define some schema sql file and use it on database side , and simply configure hbm2ddlauto as update.
Here are possible values of hbm2.ddlauto:
validate: validate the schema, makes no changes to the database.
update: update the schema.
create: creates the schema, destroying previous data.
create-drop: drop the schema when the SessionFactory is closed
explicitly, typically when the application is stopped.
answered Nov 15 '18 at 17:24
Mykhailo MoskuraMykhailo Moskura
839113
add a comment |
If you will configure value as create you can update a record , but when your application is down , and you will restart it all changes will disappear.
So actually in this case its better to use update.
In case of update it only updates schema , you can define some schema sql file and use it on database side , and simply configure hbm2ddlauto as update.
Here are possible values of hbm2.ddlauto:
validate: validate the schema, makes no changes to the database.
update: update the schema.
create: creates the schema, destroying previous data.
create-drop: drop the schema when the SessionFactory is closed
explicitly, typically when the application is stopped.
answered Nov 15 '18 at 17:24
Mykhailo MoskuraMykhailo Moskura
839113
If you will configure value as create you can update a record , but when your application is down , and you will restart it all changes will disappear.
So actually in this case its better to use update.
In case of update it only updates schema , you can define some schema sql file and use it on database side , and simply configure hbm2ddlauto as update.
Here are possible values of hbm2.ddlauto:
validate: validate the schema, makes no changes to the database.
update: update the schema.
create: creates the schema, destroying previous data.
create-drop: drop the schema when the SessionFactory is closed
explicitly, typically when the application is stopped.
answered Nov 15 '18 at 17:24
Mykhailo MoskuraMykhailo Moskura
839113
edited Nov 15 '18 at 17:32
answered Nov 15 '18 at 17:24
Mykhailo MoskuraMykhailo Moskura
839113
answered Nov 15 '18 at 17:24
Mykhailo MoskuraMykhailo Moskura
839113
answered Nov 15 '18 at 17:24
Mykhailo MoskuraMykhailo Moskura
839113
839113
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53324541%2fi-have-recently-started-learning-hibernate-and-i-got-the-following-doubts%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
