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/*
* Copyright 2010 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.api.internal.project.taskfactory;
import org.gradle.api.DefaultTask;
import org.gradle.api.InvalidUserDataException;
import org.gradle.api.Task;
import org.gradle.api.internal.AbstractTask;
import org.gradle.api.internal.project.ProjectInternal;
import org.gradle.api.reflect.ObjectInstantiationException;
import org.gradle.api.tasks.TaskInstantiationException;
import org.gradle.internal.reflect.Instantiator;
import org.gradle.util.NameValidator;
import java.util.concurrent.Callable;
public class TaskFactory implements ITaskFactory {
private final ProjectInternal project;
private final Instantiator instantiator;
public TaskFactory() {
this(null, null);
}
private TaskFactory(ProjectInternal project, Instantiator instantiator) {
this.project = project;
this.instantiator = instantiator;
}
public ITaskFactory createChild(ProjectInternal project, Instantiator instantiator) {
return new TaskFactory(project, instantiator);
}
@Override
public S create(final TaskIdentity identity, final Object... args) {
if (!Task.class.isAssignableFrom(identity.type)) {
throw new InvalidUserDataException(String.format(
"Cannot create task of type '%s' as it does not implement the Task interface.",
identity.type.getSimpleName()));
}
NameValidator.validate(identity.name, "task name", "");
final Class implType;
if (identity.type.isAssignableFrom(DefaultTask.class)) {
implType = DefaultTask.class;
} else {
implType = identity.type;
}
return AbstractTask.injectIntoNewInstance(project, identity, new Callable() {
public S call() {
try {
return identity.type.cast(instantiator.newInstance(implType, args));
} catch (ObjectInstantiationException e) {
throw new TaskInstantiationException(String.format("Could not create task of type '%s'.", identity.type.getSimpleName()),
e.getCause());
}
}
});
}
}