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/**
*
* Copyright (c) 2006-2019, Speedment, Inc. All Rights Reserved.
*
* 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 com.speedment.common.injector;
import com.speedment.common.injector.annotation.ExecuteBefore;
import com.speedment.common.injector.exception.NoDefaultConstructorException;
import com.speedment.common.injector.execution.ExecutionBuilder;
import com.speedment.common.injector.internal.InjectorBuilderImpl;
import com.speedment.common.logger.Logger;
import java.nio.file.Path;
import java.util.function.Consumer;
import java.util.function.Supplier;
import static com.speedment.common.injector.execution.ExecutionBuilder.*;
/**
* Builder pattern for the {@link Injector} interface.
*
* @author Emil Forslund
* @since 1.2.0
*/
public interface InjectorBuilder {
/**
* Appends a class that can be automatically dependency injected into
* other classes to the builder. Classes can be appended in any order.
* The final injection order will be determined once the
* {@link #build()}-method is called.
*
* If a class has already been passed as injectable with the same
* InjectorKey, the previous one will be replaced by this new one. The
* old one will never be instantiated.
*
* This method will not replace any previous injectables.
*
* @param injectableType the type that should be injectable
* @return a reference to this builder
*
* @throws NoDefaultConstructorException if the specified type does not
* have a default constructor.
*/
InjectorBuilder withComponent(Class injectableType)
throws NoDefaultConstructorException;
/**
* Appends a class that can be automatically dependency injected into
* other classes to the builder. Classes can be appended in any order.
* The final injection order will be determined once the
* {@link #build()}-method is called.
*
* If a class has already been passed as injectable with the same
* InjectorKey, the previous one will be replaced by this new one. The
* old one will never be instantiated.
*
* This method will not replace any previous injectables.
*
* @param injectableType the type that should be injectable
* @param instanceSupplier a supplier of the component instance
* @return a reference to this builder
*/
InjectorBuilder withComponent(Class injectableType, Supplier instanceSupplier);
/**
* Puts one or multiple classes contained in an InjectBundle that can be
* automatically dependency injected into other classes to the builder.
* Classes can be appended in any order. The final injection order will
* be determined once the {@link #build()}-method is called.
*
* If an injectable class has already been passed as injectable with the
* same key, the previous one will be replaced by this new one. The old
* one will never be instantiated.
*
* @param bundleClass containing the injectable classes that shall be
* appended
* @return a reference to this builder
*
* @throws NoDefaultConstructorException if the specified type does not
* have a default constructor.
*/
InjectorBuilder withBundle(Class bundleClass)
throws NoDefaultConstructorException;
/**
* Overrides a particular configuration parameter in the config file
* with the specified value.
*
* @param name the key to override
* @param value the new value
* @return a reference to this builder
*/
InjectorBuilder withParam(String name, String value);
/**
* Sets the location of the configuration file.
*
* @param configFile the new config file location
* @return a reference to this builder
*/
InjectorBuilder withConfigFileLocation(Path configFile);
/**
* Appends an action that must be executed sometime during the configuration
* phase. The action will have access to the instance as it is configured.
* This is equivalent to using the {@link ExecuteBefore}-annotation on a
* method in the class.
*
* @param the injectable type
* @param executionBuilder builder for the execution to create
* @return a reference to this builder
*/
InjectorBuilder before(ExecutionBuilder executionBuilder);
/**
* Appends an action that must be executed sometime before specified
* type reaches the {@link State#INITIALIZED} state. The action will
* have access to the instance as it is configured. This is equivalent
* to using the {@link ExecuteBefore}-annotation on a method in the
* class.
*
* @param the injectable type
* @param injectableType the injectable type
* @param action action to be applied before state is reached
* @return a reference to this builder
*/
default InjectorBuilder beforeInitialized(
Class injectableType, Consumer action) {
return before(initialized(injectableType).withExecute(action));
}
/**
* Appends an action that must be executed sometime before specified
* type reaches the {@link State#RESOLVED} state. The action will
* have access to the instance as it is configured. This is equivalent
* to using the {@link ExecuteBefore}-annotation on a method in the
* class.
*
* @param the injectable type
* @param injectableType the injectable type
* @param action action to be applied before state is reached
* @return a reference to this builder
*/
default InjectorBuilder beforeResolved(
Class injectableType, Consumer action) {
return before(resolved(injectableType).withExecute(action));
}
/**
* Appends an action that must be executed sometime before specified
* type reaches the {@link State#STARTED} state. The action will
* have access to the instance as it is configured. This is equivalent
* to using the {@link ExecuteBefore}-annotation on a method in the
* class.
*
* @param the injectable type
* @param injectableType the injectable type
* @param action action to be applied before state is reached
* @return a reference to this builder
*/
default InjectorBuilder beforeStarted(
Class injectableType, Consumer action) {
return before(started(injectableType).withExecute(action));
}
/**
* Appends an action that must be executed sometime before specified
* type reaches the {@link State#STOPPED} state. The action will
* have access to the instance as it is configured. This is equivalent
* to using the {@link ExecuteBefore}-annotation on a method in the
* class.
*
* @param the injectable type
* @param injectableType the injectable type
* @param action action to be applied before state is reached
* @return a reference to this builder
*/
default InjectorBuilder beforeStopped(
Class injectableType, Consumer action) {
return before(stopped(injectableType).withExecute(action));
}
/**
* Builds the {@link Injector} instance, organizing the
* injectable instances based on their internal dependencies.
*
* @return the built instance
*
* @throws InstantiationException if one of the injectables can not
* be instantiated.
*/
Injector build() throws InstantiationException;
/**
* Returns the {@link logger} object used by the default implementation of
* the {@code InjectorBuilder}.
*
* @return the default logger
*/
static Logger logger() {
return InjectorBuilderImpl.LOGGER_INSTANCE;
}
}