com.speedment.common.injector.internal.execution.ExecutionTwoParamBuilderImpl Maven / Gradle / Ivy

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A small dependency injection library.
There is a newer version: 3.2.10
/**
 *
 * 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.internal.execution;

import com.speedment.common.injector.MissingArgumentStrategy;
import com.speedment.common.injector.State;
import com.speedment.common.injector.dependency.Dependency;
import com.speedment.common.injector.dependency.DependencyGraph;
import com.speedment.common.injector.dependency.DependencyNode;
import com.speedment.common.injector.exception.NotInjectableException;
import com.speedment.common.injector.execution.Execution;
import com.speedment.common.injector.execution.ExecutionBuilder;
import com.speedment.common.injector.execution.ExecutionThreeParamBuilder;
import com.speedment.common.injector.execution.ExecutionTwoParamBuilder;
import com.speedment.common.injector.internal.dependency.DependencyImpl;

import java.lang.reflect.InvocationTargetException;

import static com.speedment.common.injector.internal.util.SetUtil.unmodifiableSet;
import static java.util.Objects.requireNonNull;

/**
 * Second step of an {@link ExecutionBuilder}-chain.
 * 
 * @param    the component to withExecute on
 * @param   the first parameter type
 * @param   the second parameter type
 * 
 * @author Emil Forslund
 * @since  1.2.0
 */
public final class ExecutionTwoParamBuilderImpl 
extends AbstractExecutionBuilder
implements ExecutionTwoParamBuilder {
    
    private final Class param0;
    private final Class param1;
    private final State state0, state1;

    private TriConsumer executeAction;
    
    public ExecutionTwoParamBuilderImpl(
            Class component, State state,
            Class param0, State state0,
            Class param1, State state1) {
        
        super(component, state);
        this.param0 = requireNonNull(param0);
        this.state0 = requireNonNull(state0);
        this.param1 = requireNonNull(param1);
        this.state1 = requireNonNull(state1);
    }

    @Override
    public  ExecutionThreeParamBuilder withState(
            State state2, Class param2) {
        
        return new ExecutionThreeParamBuilderImpl<>(
            getComponent(), getState(), 
            param0, state0,
            param1, state1,
            param2, state2
        );
    }

    @Override
    public ExecutionBuilder withExecute(TriConsumer executeAction) {
        this.executeAction = requireNonNull(executeAction);
        return this;
    }

    @Override
    public Execution build(DependencyGraph graph) {
        
        requireNonNull(executeAction, "No execution has been specified.");
        
        final DependencyNode node0 = graph.get(param0);
        final Dependency dep0 = new DependencyImpl(node0, state0);
        
        final DependencyNode node1 = graph.get(param1);
        final Dependency dep1 = new DependencyImpl(node1, state1);
        
        return new AbstractExecution(
                getComponent(),
                getState(),
                unmodifiableSet(dep0, dep1),
                MissingArgumentStrategy.THROW_EXCEPTION) {
                    
            @Override
            public boolean invoke(T component, ClassMapper classMapper)
            throws IllegalAccessException, IllegalArgumentException, 
                   InvocationTargetException, NotInjectableException {
                
                final P0 arg0 = classMapper.apply(param0);
                final P1 arg1 = classMapper.apply(param1);
                executeAction.accept(component, arg0, arg1);
                return true;
            }
        };
    }
}