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    • net.tascalate.concurrent.var.ContextualPromiseCustomizer Maven / Gradle / Ivy

    /**
 * Copyright 2015-2020 Valery Silaev (http://vsilaev.com)
 *
 * 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 net.tascalate.concurrent.var;

import java.util.List;
import java.util.function.BiConsumer;
import java.util.function.BiFunction;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.function.Supplier;

import net.tascalate.concurrent.decorators.PromiseCustomizer;

class ContextualPromiseCustomizer extends ContextualObject implements PromiseCustomizer {
    ContextualPromiseCustomizer(List> contextVars, 
                                ContextTrampoline.Propagation propagation, 
                                List capturedContext) {
        super(contextVars, propagation, capturedContext);
    }
    
    @Override
    public Runnable wrapArgument(Runnable original, boolean async) {
        return () -> {
            List originalContext = applyCapturedContext();
            try {
                original.run();
            } finally {
                restoreContext(originalContext);
            }
        };

    }

    @Override
    public  Function wrapArgument(Function original, boolean async, boolean isCompose) {
        return u -> {
            List originalContext = applyCapturedContext();
            try {
                return original.apply(u);
            } finally {
                restoreContext(originalContext);
            }
        };
    }

    @Override
    public  Consumer wrapArgument(Consumer original, boolean async) {
        return u -> {
            List originalContext = applyCapturedContext();
            try {
                original.accept(u);
            } finally {
                restoreContext(originalContext);
            }
        };
    }

    @Override
    public  Supplier wrapArgument(Supplier original, boolean async) {
        return () -> {
            List originalContext = applyCapturedContext();
            try {
                return original.get();
            } finally {
                restoreContext(originalContext);
            }
        };
    }
    
    @Override
    public  Predicate wrapArgument(Predicate original, boolean async) {
        return u -> {
            List originalContext = applyCapturedContext();
            try {
                return original.test(u);
            } finally {
                restoreContext(originalContext);
            }
        };
    }

    @Override
    public  BiFunction wrapArgument(BiFunction original, boolean async) {
        return (u, v) -> {
            List originalContext = applyCapturedContext();
            try {
                return original.apply(u, v);
            } finally {
                restoreContext(originalContext);
            }
        };
    }

    @Override
    public  BiConsumer wrapArgument(BiConsumer original, boolean async) {
        return (u, v) -> {
            List originalContext = applyCapturedContext();
            try {
                original.accept(u, v);
            } finally {
                restoreContext(originalContext);
            }
        };
    }

    /*
    @Override
    public  CompletionStage wrapArgument(CompletionStage original, boolean async) {
        // TODO Option to wrap original CompletionStage?
        return PromiseCustomizer.super.wrapArgument(original, async);
    }
    */
}
    
    
    
    

    




    
    
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