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"{ Package: 'stx:goodies/metacello' }"
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Object subclass:#MetacelloProjectSpecForLoad
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instanceVariableNames:'projectSpec useDetermineVersionForLoad overrideProjectSpec'
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classVariableNames:''
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poolDictionaries:''
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category:'Metacello-Core-Scripts'
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!
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!MetacelloProjectSpecForLoad methodsFor:'accessing'!
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overrideProjectSpec
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^ overrideProjectSpec
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!
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overrideProjectSpec: anObject
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overrideProjectSpec := anObject
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!
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projectSpec
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^ projectSpec
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!
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projectSpec: anObject
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projectSpec := anObject
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!
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useDetermineVersionForLoad
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useDetermineVersionForLoad ifNil: [ useDetermineVersionForLoad := true ].
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^ useDetermineVersionForLoad
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!
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useDetermineVersionForLoad: anObject
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useDetermineVersionForLoad := anObject
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! !
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!MetacelloProjectSpecForLoad methodsFor:'operations'!
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performCurrentVersionTestAgainst: vrsn operator: anOperator targetVersionStatus: targetVersionStatus using: anMCLoader
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"answer true if the current state of image is to be left as is"
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| currentVersion existing new |
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vrsn ifNil: [ ^ false ].
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self useDetermineVersionForLoad
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ifTrue: [
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| prjct cv |
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self hasOverride
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ifTrue: [ self error: 'unexpected logic combination: useDeterminVersionForLoad & hasOverride' ].
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prjct := self projectSpec projectClassProject.
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prjct loader: anMCLoader.
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(cv := prjct currentVersion) == nil
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ifTrue: [ ^ false ].
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(targetVersionStatus includes: cv versionStatus)
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ifTrue: [ ^ cv perform: anOperator with: vrsn ].
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^ false ].
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(self hasOverride not or: [ targetVersionStatus ~= #(#'allLoadedToSpec') ])
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ifTrue: [ ^ false ].
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(self overrideProjectSpec allPackagesLoaded: anMCLoader)
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ifFalse: [
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"roughly equivalent to versionStatus test above (#'allLoadedToSpec')"
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^ false ].
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(currentVersion := self overrideProjectSpec versionOrNil) ifNil: [ ^ false ].
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currentVersion = vrsn
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ifTrue: [ ^ true ].
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existing := self overrideProjectSpec asProjectRegistration.
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new := self projectSpec asProjectRegistration.
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^ currentVersion > vrsn
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ifTrue: [
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"answer false if downgrade allowed"
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(MetacelloAllowProjectDowngrade new
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existingProjectRegistration: existing;
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newProjectRegistration: new;
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signal) == existing ]
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ifFalse: [
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"answer false if upgrade allowed"
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(MetacelloAllowProjectUpgrade new
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existingProjectRegistration: existing;
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newProjectRegistration: new;
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signal) == existing ]
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!
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performLoad
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| displayString spec |
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spec := self projectSpec.
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displayString := 'Project: ' , spec name.
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spec versionString ~~ nil
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ifTrue: [ displayString := displayString , ' ' , spec versionString ].
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Transcript
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cr;
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show: displayString.
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self hasOverride
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ifTrue: [
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| override |
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override := self overrideProjectSpec copy.
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override mergeScriptLoads: spec.
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override loadVersion: nil ]
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ifFalse: [
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spec
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loadVersion:
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(self useDetermineVersionForLoad
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ifTrue: [ spec determineCurrentVersionForLoad ]
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ifFalse: [ spec versionOrNil ]) ]
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! !
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!MetacelloProjectSpecForLoad methodsFor:'testing'!
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hasOverride
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^ self overrideProjectSpec ~~ nil
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! !
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!MetacelloProjectSpecForLoad class methodsFor:'documentation'!
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version_SVN
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^ '$Id:: $'
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! !
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