Package com.cloudforge.core.config

Class DefaultValueResolver

java.lang.Object

com.cloudforge.core.config.DefaultValueResolver

public class DefaultValueResolver
extends Object

Resolves default values for configuration fields using layered priority.

Default value priority (highest to lowest):

1. User override in deployment-context.json (not handled here)
2. FrameworkRules requirements (compliance-driven defaults)
3. ApplicationSpec defaults (application-specific defaults via ConfigFieldInfo.defaultFrom())
4. ConfigField annotation default (system-wide defaults)

Convention-Based Lookup

The defaultFrom attribute in ConfigField specifies a method name or chain to call on the ApplicationSpec:

 @ConfigField(
     displayName = "CPU Units",
     defaultFrom = "defaultCpu"  // Calls appSpec.defaultCpu()
 )
 public Integer cpu;

 @ConfigField(
     displayName = "Database Engine",
     defaultFrom = "databaseRequirement().engine"  // Chained: appSpec.databaseRequirement().engine()
 )
 public String databaseEngine;
 

Since:

3.0.0

Constructor Summary

Constructors

Constructor	Description
DefaultValueResolver()

Method Summary

Modifier and Type	Method	Description
static Object	resolve(ConfigFieldInfo fieldInfo, ApplicationSpec appSpec, List<FrameworkRules<?>> frameworks)	Resolves the default value for a field using layered priority.
static Object	resolveWithFallback(ConfigFieldInfo fieldInfo, ApplicationSpec appSpec, List<FrameworkRules<?>> frameworks, Object config)	Resolves default with fallback to field's annotated default.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DefaultValueResolver

public DefaultValueResolver()

Method Details

resolve

public static Object resolve(ConfigFieldInfo fieldInfo,
 ApplicationSpec appSpec,
 List<FrameworkRules<?>> frameworks)

Resolves the default value for a field using layered priority.

Parameters:

fieldInfo - field metadata

appSpec - application spec for application-specific defaults

frameworks - active compliance frameworks

Returns:

resolved default value, or null if no default available

resolveWithFallback

public static Object resolveWithFallback(ConfigFieldInfo fieldInfo,
 ApplicationSpec appSpec,
 List<FrameworkRules<?>> frameworks,
 Object config)

Resolves default with fallback to field's annotated default.

Convenience method that returns the field's current value as fallback.

Parameters:

fieldInfo - field metadata

appSpec - application spec

frameworks - active frameworks

config - current config (for reading current field value as fallback)

Returns:

resolved default value, or current field value if no default available