Direction

Represents the direction of a trade or order. BUY = Going long (buying to open, or buying to close a short) SELL = Going short (selling to open, or selling to close a long)

Direction.java

package com.bookmap.ordermanagement.model;

/**
 * Represents the direction of a trade or order.
 *
 * BUY = Going long (buying to open, or buying to close a short)
 * SELL = Going short (selling to open, or selling to close a long)
 */
public enum Direction {

    BUY("BUY", true),
    SELL("SELL", false);

    private final String label;
    private final boolean isBuy;

    Direction(String label, boolean isBuy) {
        this.label = label;
        this.isBuy = isBuy;
    }

    /**
     * Returns true if this is a BUY direction.
     */
    public boolean isBuy() {
        return isBuy;
    }

    /**
     * Returns the opposite direction.
     */
    public Direction opposite() {
        return this == BUY ? SELL : BUY;
    }

    /**
     * Convert from boolean (Bookmap convention).
     */
    public static Direction fromBoolean(boolean isBuy) {
        return isBuy ? BUY : SELL;
    }

    @Override
    public String toString() {
        return label;
    }
}