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author | 2024-05-10 11:27:49 +0000 | |
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committer | 2024-05-10 11:27:49 +0000 | |
commit | b02f2d765bd33be53d6b244c683357cdc5d23843 (patch) | |
tree | 234f12e331dc3314e3ab12eddcabbb78f5a3e7c7 /docs | |
parent | 6815379376029841c19d9cca9a08721b9364d48d (diff) | |
parent | 02464bf9714fb79555276be76bc458f31df63a8f (diff) |
Merge "Reviewed property config mechanism docs"
Diffstat (limited to 'docs')
-rw-r--r-- | docs/development/property-configuration.rst | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/docs/development/property-configuration.rst b/docs/development/property-configuration.rst index 39691ade..d89b4769 100644 --- a/docs/development/property-configuration.rst +++ b/docs/development/property-configuration.rst @@ -10,13 +10,13 @@ Property-configuration mechanisms .. contents:: :depth: 3 -This article explains how to implement handling and validation of common parameter into the Policy Framework Components. +This article explains how to implement handling and validation of common parameters into the Policy Framework Components. Not Spring boot framework ************************* -The application should have a ParameterHandler class to support the map values from Json to a POJO, so it should be load the file, convert it performing all type conversion. +The application should have a ParameterHandler class to support the map of values from Json to a POJO; so it should load the file and convert it; performing all type conversion. -The code below shown an example of ParameterHandler: +The code below shown is an example of ParameterHandler: .. code-block:: java @@ -59,9 +59,9 @@ The code below shown an example of ParameterHandler: } -The POJO have to implement **org.onap.policy.common.parameters.ParameterGroup** interface or eventually extend **org.onap.policy.common.parameters.ParameterGroupImpl**. The last one already implements **validate()** method that performs error checking using validation **org.onap.policy.common.parameters.annotations**. +The POJO has to implement the **org.onap.policy.common.parameters.ParameterGroup** interface or eventually extend **org.onap.policy.common.parameters.ParameterGroupImpl**. The last one already implements the **validate()** method that performs error checking using validation **org.onap.policy.common.parameters.annotations**. -The code below shown an example of POJO: +The code below shows an example of the POJO: .. code-block:: java @@ -87,7 +87,7 @@ The code below shown an example of POJO: } -The code shows below, is an example of Unit Test validation of the POJO PapParameterGroup: +The code shown below, is an example of Unit Test validation of the POJO PapParameterGroup: .. code-block:: java @@ -106,13 +106,13 @@ The code shows below, is an example of Unit Test validation of the POJO PapParam Using Spring boot framework *************************** -Spring loads automatically the property file and put it available under the **org.springframework.core.env.Environment** Spring component. +Spring loads the property file automatically and makes it available under the **org.springframework.core.env.Environment** Spring component. Environment +++++++++++ A component can use Environment component directly. -Environment component is not a good approach because there is not type conversion and error checking, but it could be useful when the name of the property you need to access changes dynamically. +The Environment component is not a good approach because there is no type conversion or error checking, but it could be useful when the name of the property you need to access changes dynamically. .. code-block:: java @@ -134,7 +134,7 @@ Annotation-based Spring configuration All annotation-based Spring configurations support the Spring Expression Language (SpEL), a powerful expression language that supports querying and manipulating an object graph at runtime. A documentation about SpEL could be found here: https://docs.spring.io/spring-framework/docs/3.0.x/reference/expressions.html. -A component can use **org.springframework.beans.factory.annotation.Value**, which reads from properties, performs a type conversion and injects the value into the filed. There is not error checking, but it can assign default value if the property is not defined. +A component can use **org.springframework.beans.factory.annotation.Value**, which reads from properties, performs a type conversion and injects the value into the field. There is no error checking, but it can assign a default value if the property is not defined. .. code-block:: java @@ -178,9 +178,9 @@ ConfigurationProperties private String description; } -In a scenario that we need to include into a POJO shown before, a class that implement **ParameterGroup** interface, we need to add the **org.onap.policy.common.parameters.validation.ParameterGroupConstraint** annotation. That annotation is configured to use **ParameterGroupValidator** that handles the conversion of a **org.onap.policy.common.parameters.BeanValidationResult** to a Spring validation. +In a scenario where we need to include the properties in a POJO, as shown before, in a class that implements **ParameterGroup** interface, we need to add the **org.onap.policy.common.parameters.validation.ParameterGroupConstraint** annotation. That annotation is configured to use **ParameterGroupValidator**, which handles the conversion of a **org.onap.policy.common.parameters.BeanValidationResult** to a Spring validation. -The code below shown how to add TopicParameterGroup parameter into ClRuntimeParameterGroup: +The code below shows how to add the TopicParameterGroup parameter into acRuntimeParameterGroup: .. code-block:: java @@ -197,7 +197,7 @@ A bean configured with ConfigurationProperties, is automatically a Spring compon @RequiredArgsConstructor public class Example { - private ClRuntimeParameterGroup parameters; + private acRuntimeParameterGroup parameters; .... public void method() { @@ -206,7 +206,7 @@ A bean configured with ConfigurationProperties, is automatically a Spring compon ..... } -The code shows below, is an example of Unit Test validation of the POJO ClRuntimeParameterGroup: +The code shown below, is an example of Unit Test validation of the POJO acRuntimeParameterGroup: .. code-block:: java @@ -214,7 +214,7 @@ The code shows below, is an example of Unit Test validation of the POJO ClRuntim @Test void testParameters_NullTopicParameterGroup() { - final ClRuntimeParameterGroup parameters = CommonTestData.geParameterGroup(); + final acRuntimeParameterGroup parameters = CommonTestData.geParameterGroup(); parameters.setTopicParameterGroup(null); assertThat(validatorFactory.getValidator().validate(parameters)).isNotEmpty(); } |