增加排除查询字段功能 · Pull Request !12 · fluent-mybatis/fluent-mybatis

**以下是根据作者书写的示例：** 
 ```
        mapper.listEntity(ReceiptRecordQuery.query()
            .select.apply(fieldMeta -> Predicates
                .and(column -> !ReceiptRecordMapping.createTime.column.equals(column))
                .and(column -> !ReceiptRecordMapping.updateTime.column.equals(column))
                .and(column -> !ReceiptRecordMapping.userId.column.equals(column))
                .test(fieldMeta.getColumn()))
            .end()
        );
 ```
 **提点小建议，最终实现示例为：** 
```
        mapper.listEntity(ReceiptRecordQuery.query()
            .select.apply(fieldMeta -> Predicates
                .and(ReceiptRecordMapping.createTime::neColumn)
                .and(ReceiptRecordMapping.updateTime::neColumn)
                .and(ReceiptRecordMapping.userId.column::neColumn)
                .test(fieldMeta.getColumn()))
            .end()
        );
```
**代码实现**
* 方案1
```
类cn.org.atool.fluent.mybatis.base.model.FieldMapping增加方法neColumn

/**
     * 实体对方属性映射名称与原字段映射名称进行对比
     *
     * @param fieldMeta
     * @return
     */
    public boolean neColumn(FieldMeta fieldMeta) {
        return this.column.euqals(fieldMeta.getColumn());
    }
```
 * 方案2 cn.org.atool.fluent.mybatis.segment.SelectorBase增加notApply方法
```
    /**
     * 排除查询字段
     *
     * @param columns 查询字段
     * @return 查询字段选择器
     */
    public S notApply(FieldMapping... columns) {
        if (If.isEmpty(columns)) {
            throw new RuntimeException("Apply column missing.");
        } else if (this.aggregate != null && columns.length > 1) {
            throw new RuntimeException("Aggregate functions allow only one column.");
        }
        List<String> fields = this.wrapper.allFields();
        head:
        for (String field : fields) {
            for (FieldMapping column : columns) {
                if (column.column.equals(field)) {
                    continue head;
                }
            }
            Column _column = Column.column(field, this.wrapper);
            this.selectColumn(_column, null);
        }
        return super.getOrigin();
    }
```

以上是个人拙见，仅供参考，代码已经自测，运行正常
 **注** ：代码提交的是方案2，方案1只是建议

类型	指派人员	状态
审查	稻草江南已审查通过	已完成 (1/1人)
测试	稻草江南已测试通过	已完成 (1/1人)

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