Skip to content

Remove "as" call function code snippet #2157

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 7 commits into from
Oct 27, 2025
Merged

Remove "as" call function code snippet #2157

Changes from all commits
Commits
Show all changes
7 commits
Select commit Hold shift + click to select a range
ce003f3
Remove "as" call function code snippet
Naguco Oct 17, 2025
9bdc055
File path for SubmitOrderHandler
Naguco Oct 17, 2025
c62dc44
Update get-started/in-a-nutshell.md
Naguco Oct 20, 2025
db05649
Update get-started/in-a-nutshell.md
Naguco Oct 20, 2025
a89e0e9
Update get-started/in-a-nutshell.md
rjayasinghe Oct 23, 2025
e2ace73
Merge branch 'main' into main
rjayasinghe Oct 23, 2025
a691b38
Update in-a-nutshell.md
Naguco Oct 23, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
14 changes: 7 additions & 7 deletions get-started/in-a-nutshell.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -556,7 +556,7 @@ You can have this _.js_ file created automatically with [`cds add handler`](../t
In CAP Java, you can add custom handlers for your service as so called EventHandlers. As CAP Java integrates with Spring Boot, you need to provide your custom code in classes, annotated with `@Component`, for example. Use your favorite Java IDE to add a class like the following to the `srv/src/main/java/` folder of your application. {.impl .java}

::: code-group
```java [srv/src/main/java/com/sap/capire/bookshop/handlers/CatalogServiceHandler.java]
```java [srv/src/main/java/com/cap/capire/bookshop/handlers/CatalogServiceHandler.java]
@Component
@ServiceName(CatalogService_.CDS_NAME)
public class CatalogServiceHandler implements EventHandler {
Expand Down Expand Up @@ -609,7 +609,7 @@ module.exports = CatalogService
Now that you have created the classes for your custom handlers it's time to add the actual logic. You can achieve this by adding methods annotated with CAP's `@Before`, `@On`, or `@After` to your new class. The annotation takes two arguments: the event that shall be handled and the entity name for which the event is handled.

::: code-group
```java [srv/src/main/java/com/sap/capire/bookshop/handlers/CatalogServiceHandler.java]
```java [srv/src/main/java/com/cap/capire/bookshop/handlers/CatalogServiceHandler.java]
@After(event = CqnService.EVENT_READ, entity = Books_.CDS_NAME)
public void addDiscountIfApplicable(List<Books> books) {
for (Books book : books) {
Expand All @@ -623,7 +623,7 @@ Now that you have created the classes for your custom handlers it's time to add

:::details Code including imports
::: code-group
```java [srv/src/main/java/com/sap/capire/bookshop/handlers/CatalogServiceHandler.java]
```java [srv/src/main/java/com/cap/capire/bookshop/handlers/CatalogServiceHandler.java]
package com.sap.capire.bookshop.handlers;

import java.util.List;
Expand Down Expand Up @@ -696,7 +696,7 @@ module.exports = CatalogService
<span class="impl java">

::: code-group
```java [srv/src/main/java/com/sap/capire/bookshop/handlers/SubmitOrderHandler.java]
```java [srv/src/main/java/com/cap/capire/bookshop/handlers/SubmitOrderHandler.java]
@Component
@ServiceName(CatalogService_.CDS_NAME)
public class SubmitOrderHandler implements EventHandler {
Expand All @@ -710,7 +710,7 @@ public class SubmitOrderHandler implements EventHandler {
@On
public void onSubmitOrder(SubmitOrderContext context) {
Select<Books_> byId = Select.from(cds.gen.catalogservice.Books_.class).byId(context.getBook());
Books book = persistenceService.run(byId).single().as(Books.class);
Books book = persistenceService.run(byId).single(Books.class);
if (context.getQuantity() > book.getStock())
throw new IllegalArgumentException(context.getQuantity() + " exceeds stock for book #" + book.getTitle());
book.setStock(book.getStock() - context.getQuantity());
Expand All @@ -723,7 +723,7 @@ public class SubmitOrderHandler implements EventHandler {

:::details Code including imports
::: code-group
```java [srv/src/main/java/com/sap/capire/bookshop/handlers/CatalogService.java]
```java [srv/src/main/java/com/cap/capire/bookshop/handlers/SubmitOrderHandler.java]
package com.sap.capire.bookshop.handlers;

import org.springframework.stereotype.Component;
Expand Down Expand Up @@ -751,7 +751,7 @@ public class SubmitOrderHandler implements EventHandler {
@On
public void onSubmitOrder(SubmitOrderContext context) {
Select<Books_> byId = Select.from(cds.gen.catalogservice.Books_.class).byId(context.getBook());
Books book = persistenceService.run(byId).single().as(Books.class);
Books book = persistenceService.run(byId).single(Books.class);
if (context.getQuantity() > book.getStock())
throw new IllegalArgumentException(context.getQuantity() + " exceeds stock for book #" + book.getTitle());
book.setStock(book.getStock() - context.getQuantity());
Expand Down