在ADF中实现动态范围分区的选项，可以使用以下代码示例：

1. 在实体对象的XML文件中添加以下代码，以定义分区并指定分区键：

2. 在实体对象的Java类中添加以下代码，以动态选择和更改当前分区：

public class YourEntityObjectImpl extends EntityImpl { private static final int DEFAULT_PARTITION = 0;

public YourEntityObjectImpl() { super(); }

protected void create(AttributeList attributeList) { super.create(attributeList);

// Set the default partition
setPartitionId(DEFAULT_PARTITION);

}

public void setPartitionId(Number partitionId) { if (partitionId == null) { // Set the default partition if the partitionId is null partitionId = DEFAULT_PARTITION; }

PartitionManager partitionManager =
  PartitioningHelper.getPartitionManager("YOUR_PARTITION_COLUMN_NAME");

// Set the current partition
setCurrentPartition(partitionManager.getPartition(partitionId));

// Update the entity instance with the new partition
setAttributeValue("YOUR_PARTITION_COLUMN_NAME", partitionId);

} }

3. 将以下代码添加到DataControlImpl类的Java文件中，以使分区更改得到保存：

public void commit() { super.commit();

// Save the partition change YourEntityObjectImpl entity = (YourEntityObjectImpl)getEntity(YourEntityObjectImpl.class);

if (entity != null) { entity.setPartitionId(getCurrentPartitionId()); } }