/*
* 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.internal.core;
import com.google.common.base.Optional;
import org.gradle.api.Nullable;
import org.gradle.model.internal.core.rule.describe.ModelRuleDescriptor;
import org.gradle.model.internal.type.ModelType;
import java.util.Collections;
public class EmptyModelProjection implements ModelProjection {
public static final ModelProjection INSTANCE = new EmptyModelProjection();
private EmptyModelProjection() {
}
@Nullable
@Override
public <T> ModelView<? extends T> asImmutable(ModelType<T> type, MutableModelNode node, @Nullable ModelRuleDescriptor ruleDescriptor) {
return null;
}
@Nullable
@Override
public <T> ModelView<? extends T> asMutable(ModelType<T> type, MutableModelNode node, ModelRuleDescriptor ruleDescriptor) {
return null;
}
@Override
public <T> boolean canBeViewedAs(ModelType<T> type) {
return false;
}
@Override
public Iterable<String> getTypeDescriptions(MutableModelNode node) {
return Collections.emptyList();
}
@Override
public Optional<String> getValueDescription(MutableModelNode modelNodeInternal) {
return Optional.absent();
}
}