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5437 mandeep.dh 1 
/**
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 *
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 */
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package in.shop2020.inventory.service;
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/**
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 * @author mandeep
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 *
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 */
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public class SubtractStrategy implements Strategy {
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    long subtractionFactor;
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    public SubtractStrategy(long factor) {
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        subtractionFactor = factor;
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    }
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    /* (non-Javadoc)
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     * @see in.shop2020.inventory.service.Strategy#compute(long, long, long)
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     */
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    public long compute(long itemId, long warehouseId, long quantity) {
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        return Math.max(0, quantity - subtractionFactor);
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    }
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}