/*
* Copyright 2013 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 net.jcip.annotations.NotThreadSafe;
import org.gradle.api.Action;
import org.gradle.internal.Actions;
import org.gradle.internal.ErroringAction;
import org.gradle.internal.Factory;
import org.gradle.model.collection.CollectionBuilder;
import org.gradle.model.entity.internal.NamedEntityInstantiator;
import org.gradle.model.internal.core.*;
import org.gradle.model.internal.core.rule.describe.ActionModelRuleDescriptor;
import org.gradle.model.internal.core.rule.describe.ModelRuleDescriptor;
import org.gradle.model.internal.core.rule.describe.NestedModelRuleDescriptor;
@NotThreadSafe
public class DefaultCollectionBuilder<T> implements CollectionBuilder<T> {
private final ModelPath collectionPath;
private final NamedEntityInstantiator<T> instantiator;
private final ModelRuleDescriptor sourceDescriptor;
private final Inputs implicitInputs;
private final ModelRuleRegistrar ruleRegistrar;
public DefaultCollectionBuilder(ModelPath collectionPath, NamedEntityInstantiator<T> instantiator, ModelRuleDescriptor sourceDescriptor, Inputs implicitInputs, ModelRuleRegistrar ruleRegistrar) {
this.collectionPath = collectionPath;
this.instantiator = instantiator;
this.sourceDescriptor = sourceDescriptor;
this.implicitInputs = implicitInputs;
this.ruleRegistrar = ruleRegistrar;
}
public void create(final String name) {
doCreate(name, instantiator.getType(), Actions.doNothing(), new DefaultTypeFactory(name));
}
public void create(String name, Action<? super T> configAction) {
doCreate(name, instantiator.getType(), configAction, new DefaultTypeFactory(name));
}
public <S extends T> void create(String name, Class<S> type) {
doCreate(name, ModelType.of(type), Actions.<S>doNothing(), new CustomTypeFactory<S>(name, type));
}
public <S extends T> void create(final String name, final Class<S> type, Action<? super S> configAction) {
doCreate(name, ModelType.of(type), configAction, new CustomTypeFactory<S>(name, type));
}
private <S extends T> void doCreate(final String name, ModelType<S> type, Action<? super S> configAction, Factory<? extends S> factory) {
ModelReference<S> modelReference = ModelReference.of(collectionPath.child(name), type);
ModelRuleDescriptor descriptor = new NestedModelRuleDescriptor(sourceDescriptor, ActionModelRuleDescriptor.from(new ErroringAction<Appendable>() {
@Override
protected void doExecute(Appendable thing) throws Exception {
thing.append("create(").append(name).append(")");
}
}));
ruleRegistrar.create(
ModelCreators.of(modelReference, new CreateAndConfigureFactory<S>(factory, configAction))
.descriptor(descriptor)
.inputs(implicitInputs.getReferences())
.build()
);
}
private class CustomTypeFactory<S extends T> implements Factory<S> {
private final String name;
private final Class<S> type;
public CustomTypeFactory(String name, Class<S> type) {
this.name = name;
this.type = type;
}
public S create() {
return instantiator.create(name, type);
}
}
private class DefaultTypeFactory implements Factory<T> {
private final String name;
public DefaultTypeFactory(String name) {
this.name = name;
}
public T create() {
return instantiator.create(name);
}
}
private static class CreateAndConfigureFactory<T> implements Factory<T> {
private final Factory<? extends T> factory;
private final Action<? super T> action;
private CreateAndConfigureFactory(Factory<? extends T> factory, Action<? super T> action) {
this.factory = factory;
this.action = action;
}
public T create() {
T t = factory.create();
action.execute(t);
return t;
}
}
}