Added groovy metaprogramming for collection classes

src/main/groovy/groovy/runtime/metaclass/net/fortuna/ical4j/model/ComponentListMetaClass.groovy

@@ -0,0 +1,20 @@
+package groovy.runtime.metaclass.net.fortuna.ical4j.model
+
+class ComponentListMetaClass extends DelegatingMetaClass {
+
+    ComponentListMetaClass(MetaClass delegate) {
+        super(delegate)
+    }
+
+    ComponentListMetaClass(Class theClass) {
+        super(theClass)
+    }
+
+    @Override
+    Object getProperty(Object object, String property) {
+        if (hasProperty(object, property)) {
+            return super.getProperty(object, property)
+        }
+        return object.getComponents(property)
+    }
+}

src/main/groovy/groovy/runtime/metaclass/net/fortuna/ical4j/model/ParameterListMetaClass.groovy

@@ -0,0 +1,28 @@
+package groovy.runtime.metaclass.net.fortuna.ical4j.model
+
+class ParameterListMetaClass extends DelegatingMetaClass {
+
+    ParameterListMetaClass(MetaClass delegate) {
+        super(delegate)
+    }
+
+    ParameterListMetaClass(Class theClass) {
+        super(theClass)
+    }
+
+    @Override
+    Object getProperty(Object object, String property) {
+        if (hasProperty(object, property)) {
+            return super.getProperty(object, property)
+        }
+        return object.getParameters(property)
+    }
+
+    @Override
+    void setProperty(Object object, String property, Object newValue) {
+        if (hasProperty(object, property)) {
+            super.setProperty(object, property, newValue)
+        }
+        object.replace(newValue)
+    }
+}

src/main/groovy/groovy/runtime/metaclass/net/fortuna/ical4j/model/PropertyListMetaClass.groovy

@@ -0,0 +1,20 @@
+package groovy.runtime.metaclass.net.fortuna.ical4j.model
+
+class PropertyListMetaClass extends DelegatingMetaClass {
+
+    PropertyListMetaClass(MetaClass delegate) {
+        super(delegate)
+    }
+
+    PropertyListMetaClass(Class theClass) {
+        super(theClass)
+    }
+
+    @Override
+    Object getProperty(Object object, String property) {
+        if (hasProperty(object, property)) {
+            return super.getProperty(object, property)
+        }
+        return object.getProperties(property)
+    }
+}

src/main/groovy/net/fortuna/ical4j/groovy/ParameterListExtension.groovy

@@ -0,0 +1,17 @@
+package net.fortuna.ical4j.groovy
+
+import net.fortuna.ical4j.model.Parameter
+import net.fortuna.ical4j.model.ParameterList
+
+class ParameterListExtension {
+
+    static ParameterList leftShift(ParameterList self, Parameter parameter) {
+        self.add(parameter)
+        self
+    }
+
+    static ParameterList leftShift(ParameterList self, ParameterList list) {
+        list.each {self.add(it)}
+        self
+    }
+}

src/main/groovy/net/fortuna/ical4j/groovy/PropertyListExtension.groovy

@@ -0,0 +1,17 @@
+package net.fortuna.ical4j.groovy
+
+import net.fortuna.ical4j.model.Property
+import net.fortuna.ical4j.model.PropertyList
+
+class PropertyListExtension {
+
+    static PropertyList leftShift(PropertyList self, Property property) {
+        self.add(property)
+        self
+    }
+
+    static PropertyList leftShift(PropertyList self, PropertyList list) {
+        list.each {self.add(it)}
+        self
+    }
+}

src/main/resources/META-INF/groovy/org.codehaus.groovy.runtime.ExtensionModule

@@ -1,3 +1,3 @@
 moduleName = ical4j-module
 moduleVersion = ${project.version}
-extensionClasses = net.fortuna.ical4j.groovy.DurExtension,net.fortuna.ical4j.groovy.PeriodExtension
+extensionClasses = net.fortuna.ical4j.groovy.DurExtension,net.fortuna.ical4j.groovy.PeriodExtension,net.fortuna.ical4j.groovy.PropertyListExtension,net.fortuna.ical4j.groovy.ParameterListExtension

src/test/groovy/net/fortuna/ical4j/model/ParameterListTest.groovy

@@ -0,0 +1,29 @@
+package net.fortuna.ical4j.model
+
+import net.fortuna.ical4j.model.parameter.Value
+import spock.lang.Specification
+
+class ParameterListTest extends Specification {
+
+    def 'test list append with groovy left shift operator'() {
+        given: 'a parameter list'
+        ParameterList list = []
+
+        when: 'a parameter is appended with the left shift operator'
+        list << Value.BINARY
+
+        then: 'it is added to the list'
+        list.value[0] == Value.BINARY
+    }
+
+    def 'test list concat with groovy left shift operator'() {
+        given: 'a parameter list'
+        ParameterList list = []
+
+        when: 'another parameter list is appended with the left shift operator'
+        list << new ParameterList() << Value.BINARY
+
+        then: 'it is added to the list'
+        list.value[0] == Value.BINARY
+    }
+}

src/test/groovy/net/fortuna/ical4j/model/PropertyListTest.groovy

@@ -0,0 +1,30 @@
+package net.fortuna.ical4j.model
+
+
+import net.fortuna.ical4j.model.property.CalScale
+import spock.lang.Specification
+
+class PropertyListTest extends Specification {
+
+    def 'test list append with groovy left shift operator'() {
+        given: 'a property list'
+        PropertyList list = []
+
+        when: 'a property is appended with the left shift operator'
+        list << CalScale.GREGORIAN
+
+        then: 'it is added to the list'
+        list.calscale[0] == CalScale.GREGORIAN
+    }
+
+    def 'test list concat with groovy left shift operator'() {
+        given: 'a parameter list'
+        PropertyList list = []
+
+        when: 'another property list is appended with the left shift operator'
+        list << new PropertyList() << CalScale.GREGORIAN
+
+        then: 'it is added to the list'
+        list.calscale[0] == CalScale.GREGORIAN
+    }
+}

src/test/groovy/net/fortuna/ical4j/model/component/ParticipantFactoryTest.groovy

@@ -21,10 +21,10 @@ class ParticipantFactoryTest extends Specification {
         }
 
         then: 'result is as expected'
-        participant.getProperty('UID').value == '1'
+        participant.properties.uid[0].value == '1'
         participant.locations.size() == 1
-        participant.locations[0].getProperty('UID').value == '11'
+        participant.locations[0].properties.uid[0].value == '11'
         participant.resources.size() == 1
-        participant.resources[0].getProperty('UID').value == '12'
+        participant.resources[0].properties.uid[0].value == '12'
     }
 }

src/test/groovy/net/fortuna/ical4j/model/component/VAvailabilityFactoryTest.groovy

@@ -18,8 +18,8 @@ class VAvailabilityFactoryTest extends Specification {
         }
 
         then: 'result is as expected'
-        availability.getProperty('UID').value == '1'
+        availability.properties.uid[0].value == '1'
         availability.available.size() == 1
-        availability.available[0].getProperty('UID').value == '11'
+        availability.available[0].properties.uid[0].value == '11'
     }
 }

src/test/groovy/net/fortuna/ical4j/model/component/VLocationFactoryTest.groovy

@@ -15,6 +15,6 @@ class VLocationFactoryTest extends Specification {
         }
 
         then: 'result is as expected'
-        location.getProperty('UID').value == '1'
+        location.properties.uid[0].value == '1'
     }
 }

src/test/groovy/net/fortuna/ical4j/model/component/VResourceFactoryTest.groovy

@@ -15,6 +15,6 @@ class VResourceFactoryTest extends Specification {
         }
 
         then: 'result is as expected'
-        resource.getProperty('UID').value == '1'
+        resource.properties.uid[0].value == '1'
     }
 }