48.9. 6.KeyValuePairField

KeyValuePairField 注释定义键值对字段的 属性。每个 KeyValuePairField 由一个标签(= key)及其关联的值（字符串、int、date、…​）标识，可选模式，以及字段（如果需要）

case 1 : tag

此参数表示消息中字段的键

FIX 消息 - Tag

@Message(keyValuePairSeparator = "=", pairSeparator = "\u0001", type="FIX", version="4.1")
public class Order {

    @Link Header header;

    @Link Trailer trailer;

    @KeyValuePairField(tag = 1) // Client reference
    private String Account;

    @KeyValuePairField(tag = 11) // Order reference
    private String ClOrdId;

    @KeyValuePairField(tag = 22) // Fund ID type (Sedol, ISIN, ...)
    private String IDSource;

    @KeyValuePairField(tag = 48) // Fund code
    private String SecurityId;

    @KeyValuePairField(tag = 54) // Movement type ( 1 = Buy, 2 = sell)
    private String Side;

    @KeyValuePairField(tag = 58) // Free text
    private String Text;
}

案例 2：输出中的不同位置

如果我们将放置在 FIX 消息的标签/键必须按照预定义的顺序排序，则使用注释 @KeyValuePairField 的属性 'position'

FIX 消息 - Tag - sort

@Message(keyValuePairSeparator = "=", pairSeparator = "\\u0001", type = "FIX", version = "4.1", isOrdered = true)
public class Order {

    @Link Header header;

    @Link Trailer trailer;

    @KeyValuePairField(tag = 1, position = 1) // Client reference
    private String account;

    @KeyValuePairField(tag = 11, position = 3) // Order reference
    private String clOrdId;
}