Exercise 1 - Implementation

Base Transformation

Transformation class containing the MT definition. All rules are defined in the ruleStore().

package flowchartToHtmlExamples
import static yamtl.dsl.Rule.*

import org.eclipse.emf.ecore.EObject
import org.eclipse.emf.ecore.EPackage

import yamtl.core.YAMTLModule
import yamtl.groovy.YAMTLGroovyExtensions
import yamtl.groovy.YAMTLGroovyExtensions_dynamicEMF

class Example1 extends YAMTLModule {
    public Example1(EPackage flowchartPk, EPackage htmlPk) {
        YAMTLGroovyExtensions_dynamicEMF.init(this)

        header().in("in", flowchartPk).out("out", htmlPk)

        ruleStore([
                rule('FlowchartName2Head')
                        .in("flowchart", flowchartPk.Flowchart)
                        .out("head", htmlPk.HEAD, {             
                            head.value = flowchart.name
                        })
                        //TODO: Add another output object here

        ])

    }
}

Solution

The correct transformation definition for this problem is:

package flowchartToHtmlExamples
import static yamtl.dsl.Rule.*
import org.eclipse.emf.ecore.EPackage
import yamtl.core.YAMTLModule
import yamtl.groovy.YAMTLGroovyExtensions
import yamtl.groovy.YAMTLGroovyExtensions_dynamicEMF

class Example1 extends YAMTLModule {
    public Example1(EPackage flowchartPk, EPackage htmlPk) {
        YAMTLGroovyExtensions_dynamicEMF.init(this)

        header().in("in", flowchartPk).out("out", htmlPk)

        ruleStore([
                rule('FlowchartName2Head')
                        .in("flowchart", flowchartPk.Flowchart)
                        .out("head", htmlPk.HEAD, {             
                            head.value = flowchart.name
                        })
                        .out("html", htmlPk.HTML, {
                            html.head = head 
                        }),
        ])

    }
}

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Last update: October 13, 2023