Question

我正在尝试使用ConfigSlurper来解析将用作Java程序配置文件的Groovy文件。

我想支持具有基本属性的分层配置，如果需要可以覆盖它们。我认为闭包是一种表示这种情况的好方法，但我遇到了一个小问题。

我可以通过将基本闭包左移到子闭包上来将基本密钥传播到子配置：

base {
    baseKey = "All closures that compose from this closure will have this key"
}

config1 {
    config1only = "value"
}
config1 << base

config2 {
    config2only = "another value"
}
config2 << base

当我打印ConfigObject时，我得到了我希望的内容：

base.baseKey='All closures that compose from this closure will have this key'
config1 {
    config1only='value'
    baseKey='All closures that compose from this closure will have this key'
}
config2 {
    config2only='another value'
    baseKey='All closures that compose from this closure will have this key'
}

完美！但是，当我尝试覆盖其中一个config闭包中的基本键时，基本闭包中的基本键似乎优先，这不是我所期望的。这是来源：

base {
    baseKey = "All closures that compose from this closure will have this key"
    overiddenKey = "base"
}

config1 {
    config1only = "value"
    overiddenKey = "override1"
}
config1 << base

config2 {
    config2only = "another value"
    overiddenKey = "override2"
}
config2 << base

以下是精美的ConfigObject：

base {
    baseKey='All closures that compose from this closure will have this key'
    overiddenKey='base'
}
config1 {
    config1only='value'
    overiddenKey='base'
    baseKey='All closures that compose from this closure will have this key'
}
config2 {
    config2only='another value'
    overiddenKey='base'
    baseKey='All closures that compose from this closure will have this key'
}

我尝试转换到右移，但我一直收到错误：

Exception in thread "main" groovy.lang.MissingMethodException: No signature of method: groovy.util.ConfigObject.leftShift() is applicable for argument types: (script15162997138121381677545$_run_closure1) values: [script15162997138121381677545$_run_closure1@3d246ea3]
Possible solutions: leftShift(java.util.Map), leftShift(java.util.Map$Entry)
    at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:58)
    at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:54)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
    at script15162997138121381677545.run(script15162997138121381677545.groovy:18)

现在这可能是因为我对groovy闭包的工作方式有限，所以任何帮助都会受到赞赏。

更新

所以看起来我已经设法通过使用base.clone()来实现我所追求的目标：

base {
    baseKey = "All closures that compose from this closure will have this key"
    overiddenKey = "base"
}

config1 = base.clone()
config1 {
    config1only = "value"
}

config2 = base.clone()
config2 {
    config2only = "another value"
    overiddenKey = "override2"
}

产生完全我所期待的：

base {
    baseKey='All closures that compose from this closure will have this key'
    overiddenKey='base'
}
config1 {
    baseKey='All closures that compose from this closure will have this key'
    overiddenKey='base'
    config1only='value'
}
config2 {
    baseKey='All closures that compose from this closure will have this key'
    overiddenKey='override2'
    config2only='another value'
}

但configN = base.clone()定义之前的整个configN似乎有点笨拙。有没有办法可以清理一下？或者可能使用groovy不是最佳选择？

Answer 1

这是你想要的吗？

输入：

base {
    baseKey = "All closures that compose from this closure will have this key"
    overiddenKey = "base"
}

config1 << base
config1 {
    config1only = "value"
    overiddenKey = "override1"
}
config2 << base
config2 {
    config2only = "another value"
    overiddenKey = "override2"
}

输出：

base {
    baseKey='All closures that compose from this closure will have this key'
    overiddenKey='base'
}
config1 {
    baseKey='All closures that compose from this closure will have this     key'
    overiddenKey='override1'
    config1only='value'
}
config2 {
    baseKey='All closures that compose from this closure will have this key'
    overiddenKey='override2'
    config2only='another value'
}

用另一个封盖延长封口

1 个答案: