fix: simplify DBus service check and add cache path prefix

[18202781743]

1. Removed redundant isServiceActivatable() check in ValueHandler
   since isServiceRegistered() is sufficient
2. Added explicit cache path prefix setting for global cache in
   DSGConfigResource to ensure proper cache location
3. Changes improve code clarity and ensure consistent cache behavior

fix: 简化DBus服务检查并添加缓存路径前缀

1. 在ValueHandler中移除了多余的isServiceActivatable()检查，仅保留
   isServiceRegistered()已足够
2. 在DSGConfigResource中为全局缓存添加了明确的路径前缀设置，确保缓存位置
   正确
3. 这些改动提高了代码清晰度并保证了缓存行为的一致性

Summary by Sourcery

Simplify the DBus service availability logic by eliminating an unnecessary check and ensure consistent cache behavior by explicitly prefixing the global cache path.

Enhancements:

• Remove redundant DBusHandler::isServiceActivatable() check and rely solely on isServiceRegistered()
• Add explicit cache path prefix for the global cache in DSGConfigResource to guarantee correct cache location

[sourcery-ai]

Reviewer's Guide

This PR streamlines the DBus service initialization by dropping the redundant activatable check and strengthens cache management by explicitly prefixing the global cache path, enhancing clarity and consistency.

Sequence diagram for simplified DBus service check in ValueHandler

sequenceDiagram
    participant ValueHandler
    participant DBusHandler
    participant DBusService

    ValueHandler->>DBusHandler: isServiceRegistered()
    alt Service is registered
        ValueHandler->>DBusHandler: createManager(appid, fileName, subpath)
        DBusHandler-->>ValueHandler: ConfigGetter instance
    else Service is not registered
        ValueHandler-->>ValueHandler: return nullptr
    end

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Class diagram for ValueHandler and DBusHandler after DBus check simplification

classDiagram
    class ValueHandler {
        +ConfigGetter* createManager()
    }
    class DBusHandler {
        +static bool isServiceRegistered()
        +ConfigGetter* createManager(QString appid, QString fileName, QString subpath)
    }
    ValueHandler --> DBusHandler : uses

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Class diagram for DSGConfigResource and DConfigFile with explicit cache path prefix

classDiagram
    class DSGConfigResource {
        +bool reparse(QString appid)
        +QString configPrefixPath()
    }
    class DConfigFile {
        +GlobalCache* globalCache()
        +Meta* meta()
    }
    class GlobalCache {
        +void setCachePathPrefix(QString prefix)
    }
    DSGConfigResource --> DConfigFile : creates
    DConfigFile --> GlobalCache : has
    DSGConfigResource ..> GlobalCache : sets cache path prefix

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File-Level Changes

Change	Details	Files
Simplified DBus service availability check	Removed redundant isServiceActivatable() condition Retained only isServiceRegistered() in creation guard	dconfig-center/common/valuehandler.cpp
Explicitly set cache path prefix for global cache	Inserted setCachePathPrefix(configPrefixPath()+"/global") on globalCache Ensured the cache location is consistently derived from config prefix	dconfig-center/dde-dconfig-daemon/dconfigresource.cpp

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[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 在valuehandler.cpp文件中，移除了对DBusHandler::isServiceActivatable()的检查，可能会影响服务的激活逻辑。
• 在dconfigresource.cpp文件中，新增了config->globalCache()->setCachePathPrefix(configPrefixPath() + "/global");，需要确认configPrefixPath()是否已经初始化，以避免潜在的空指针异常。

是否建议立即修改:

• 是，需要确认移除DBusHandler::isServiceActivatable()检查的影响，并确保configPrefixPath()在调用setCachePathPrefix之前已经被正确初始化。

[sourcery-ai]

Hey @18202781743 - I've reviewed your changes and they look great!

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[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: 18202781743, mhduiy

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