Changes for page Your First Rest Project

Summary

• Page properties (2 modified, 0 added, 0 removed)

Details

Page properties

Author

...	...	@@ -1,1 +1,1 @@
1		-XWiki.probert
	1	+XWiki.franc

Content

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25	25	| title | string(255) |
26	26	| content | string(4000) |
27	27	| creationDate | timestamp |
28		-| lastModified | timestamp |
29	29	| author | integer | relation with Author
30	30
31	31	Author will have the following columns:
...	...	@@ -75,11 +75,10 @@
75	75	|= Attribute name |= Column |= Prototype
76	76	| content | content | longtext
77	77	| creationDate | creationDate | dateTime
78		-| lastModified | lastModified | dateTime
79	79
80	80	If you did everything well, the list of attributes should look like this:
81	81
82		-You will notice that the attributes have a column with a lock in it. When a lock is present, it will use the value of that attribute for //UPDATE ... WHERE attribute = ''// statement. This is to do optimistic locking, aka to prevent data conflict when the data object was modified by two different users. Using timestamps for optimistic locking is not a good idea because for certain RDBMS, the value can be different because of milliseconds, so remove the locks on the **creationDate** attribute. The final list should look like this:
	80	+You will notice that the attributes have a column with a lock in it. When a lock is present, it will use the value of that attribute for //UPDATE ... WHERE attribute = ''// statement. This is to do optimistic locking, aka to prevent data conflict when the data object was modified by two different users. Using timestamps for optimistic locking is not a good idea because for certain RDBMS, the value can be different because of milliseconds, so remove the locks on the **lastModified** and **creationDate** attributes. The final list should look like this:
83	83
84	84	Next step is to create the **Author** entity. Create a new entity with **Author** at its name (and also as the table name), and for the class name, use **your.app.model.Author**. The attributes for this entity are:
85	85
...	...	@@ -90,7 +90,7 @@
90	90
91	91	Final list of attributes should look like this:
92	92
93		-Now, it's time to link the two entities together. An Author can have multiple blog entries, and a BlogEntry can only have one author. To create the relationship (the join), right-click on **Author** and select **New Relationship**. On your right, select **BlogEntry** in the list. On your left, select **to many BlogEntries**, and on your right, select **to one Author**. Now, in BlogEntry, we need to store the primary key of the author so that we can make the join. The relationship builder allow us to add that attribute, so make sure **and a new foreign key named** is checked (it is checked by default). The **Create Relationship** pane should look like this:
	91	+Now, it's time to link the two entities together. A Author can have multiple blog entries, and a BlogEntry can only have one author. To create the relationship (the join), right-click on **Author** and select **New Relationship**. On your right, select **BlogEntry** in the list. On your left, select **to many BlogEntries**, and on your right, select **to one Author**. Now, in BlogEntry, we need to store the primary key of the author so that we can make the join. The relationship builder allow us to add that attribute, so make sure **and a new foreign key named** is checked (it is checked by default). The **Create Relationship** pane should look like this:
94	94
95	95	If you check in the **Outline** tab, you should see that **Author** now have a **blogEntries** relationship, and **BlogEntry** have a **author** relationship.
96	96
...	...	@@ -126,7 +126,7 @@
126	126
127	127	== Using migrations ==
128	128
129		-Migrations allow you to create the tables and columns (and some types of constraint). **Entity Modeler** has support to generate the code for the first migration, which is called "migration 0". To do that, open the EOModel (**BlogModel EOModel** in the **Resources** folder), right-click on the model name and select **Generate Migration**.
	127	+Migrations allow you to create the tables and columns (and some types of constraint). **Entity Modeler** have support to generate the code for the first migration, which is called "migration 0". To do that, open the EOModel (**BlogModel EOModel** in the **Resources** folder), right-click on the model name and select **Generate Migration**.
130	130
131	131	Copy the generated code in the clipboard. Close **Entity Modeler** and in the main Eclipse window, right-click on **Sources**, select **New** and select **Class**.
132	132
...	...	@@ -208,7 +208,7 @@
208	208	In Project Wonder, *Action* at the end of a method is a convention for REST and Direct Actions, when you call those methods from certain components, you don't need to add the *Action* part.
209	209	{{/info}}
210	210
211		-For this tutorial, we will implement the **createAction** and **indexAction** methods. But first, we need to create a key filter. A key filter will... filter the input and the output of REST request so that you don't have to send all attributes for a blog entry. For example, we want to show the details for an author, but we don't want to show the password for the author (in real-life, the password would be encrypted)
	209	+For this tutorial, we will implement the **createAction** and **showAction** methods. But first, we need to create a key filter. A key filter will... filter the input and the output of REST request so that you don't have to send all attributes for a blog entry. For example, we want to show the details for an author, but we don't want to show the password for the author (in real-life, the password would be encrypted)
212	212
213	213	Add this method in **BlogEntryController**:
214	214
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227	227
228	228	{{/code}}
229	229
230		-Now, let's implement the **createAction** method:
	228	+Now, let's implement the **creationAction** method:
231	231
232	232	{{code}}
233	233
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241	241
242	242	In 3 lines of code, you can create an object based on the request, save the new object to the database and return the new object in the response. Not bad, eh?
243	243
244		-Last step in the controller: implementing the **indexAction** method. Again, the code is simple:
	242	+Last step in the controller: implementing the **showAction** method. Again, the code is simple:
245	245
246	246	{{code}}
247	247
...	...	@@ -321,7 +321,7 @@
321	321
322	322	Switching the return value of this method says that we will follow a certain convention for HTML components. The convention for automatic HTML routing is that the component should be named <EntityName><Action>Page.wo. So in our case, the component will be **BlogEntryIndexPage**. Right-click on the project name in Eclipse and select **New** > **WOComponent**. Change the name to **BlogEntryIndexPage** and check the **Create HTML contents** button. Click **Finish**.
323	323
324		-The next step to get it to work is to make **BlogEntryIndexPage** to implement the **er.rest.routes.IERXRouteComponent** interface.
	322	+The next step to get it to work is to make **BlogEntryIndexPage** to implements the **er.rest.routes.IERXRouteComponent** interface.
325	325
326	326	{{code}}
327	327
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375	375
376	376	Now that we have a list of blog entries, let's make a page to show the content of a blog entry. Create a new component named **BlogEntryShowPage**.
377	377
378		-Open **BlogEntryShowPage.java** and make sure the class implements&nbsp;**er.rest.routes.IERXRouteComponent**.
	376	+Open **BlogEntryShowPage.java** and make sure the class extends from **er.rest.routes.IERXRouteComponent**.
379	379
380	380	{{code}}
381	381
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433	433
434	434	Save the component and run the app. Go to [[http://192.168.0.102:52406/cgi-bin/WebObjects/BlogRest.woa/ra/blogEntries.html]] to get the list of posts, and you should see a link on the title. Click on it, and now you get the full details of the blog entry
435	435
436		-The REST part of this tutorial is now complete, [[you can now move to the next part of the tutorial>>Your First Framework]].
	434	+The REST part of this tutorial is now complete, you can now switch to the next part of the tutorial.