/*
* Copyright 2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.gradle.model.collection.internal;
import org.gradle.api.Action;
import org.gradle.api.NamedDomainObjectCollection;
import org.gradle.api.Namer;
import org.gradle.api.Transformer;
import org.gradle.api.internal.plugins.DslObject;
import org.gradle.internal.Factory;
import org.gradle.model.internal.core.*;
import org.gradle.model.internal.core.rule.describe.SimpleModelRuleDescriptor;
import org.gradle.model.internal.type.ModelType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public abstract class BridgedCollections {
private static final Logger LOGGER = LoggerFactory.getLogger(BridgedCollections.class);
private BridgedCollections() {
}
public static <I, C extends NamedDomainObjectCollection<I>> ModelRegistrations.Builder registration(
final ModelReference<C> containerReference,
final Transformer<? extends C, ? super MutableModelNode> containerFactory,
final Namer<? super I> namer,
String descriptor,
final Transformer<String, String> itemDescriptorGenerator
) {
final ModelPath containerPath = containerReference.getPath();
final ModelType<C> containerType = containerReference.getType();
assert containerPath != null : "container reference path cannot be null";
return ModelRegistrations.of(containerPath)
.action(ModelActionRole.Create, new Action<MutableModelNode>() {
public void execute(final MutableModelNode containerNode) {
final C container = containerFactory.transform(containerNode);
containerNode.setPrivateData(containerType, container);
container.all(new Action<I>() {
public void execute(final I item) {
final String name = namer.determineName(item);
// For now, ignore elements added after the container has been closed
if (!containerNode.isMutable()) {
LOGGER.debug("Ignoring element '{}' added to '{}' after it is closed.", containerPath, name);
return;
}
if (!containerNode.hasLink(name)) {
ModelRegistration itemRegistration = ModelRegistrations
.unmanagedInstanceOf(
ModelReference.of(containerPath.child(name), new DslObject(item).getDeclaredType()),
new ExtractFromParentContainer<I, C>(name, containerType)
)
.descriptor(new SimpleModelRuleDescriptor(new Factory<String>() {
@Override
public String create() {
return itemDescriptorGenerator.transform(name);
}
}))
.build();
containerNode.addLink(itemRegistration);
}
}
});
container.whenObjectRemoved(new Action<I>() {
public void execute(I item) {
String name = namer.determineName(item);
containerNode.removeLink(name);
}
});
}
})
.descriptor(descriptor);
}
private static class ExtractFromParentContainer<I, C extends NamedDomainObjectCollection<I>> implements Transformer<I, MutableModelNode> {
private final String name;
private final ModelType<C> containerType;
public ExtractFromParentContainer(String name, ModelType<C> containerType) {
this.name = name;
this.containerType = containerType;
}
@Override
public I transform(MutableModelNode modelNode) {
return modelNode.getParent().getPrivateData(containerType).getByName(name);
}
}
}