/// <summary>
/// 插入从MapServer获取到的JSON数据
/// </summary>
/// <param name="features"></param>
/// <returns></returns>
public int InsertFeaturesByJson(JArray features)
{
int featureNum = 0;
try {
ZFeatureCursor cursor = Insert(true);
foreach (JObject feature in features)
{
try
{
ZFeatureBuffer buffer = CreateFeatureBuffer();
buffer.SetShapeByJson(feature.Value <JObject>("geometry"));
buffer.SetAttrsByJson(feature.Value <JObject>("attributes"));
cursor.InsertFeature(buffer);
}
catch (Exception ex)
{
Logger.log("ZFeatureClass.InsertFeaturesByJson", ex);
}
featureNum++;
}
cursor.Flush();
}
catch (Exception ex)
{
Logger.log("ZFeatureClass.InsertFeaturesByJson", ex);
}
return(featureNum);
}
/// <summary>
/// 是否存在记录
/// </summary>
/// <param name="filter"></param>
/// <returns></returns>
public bool HasRecord(ZFilter filter)
{
using (ZFeatureCursor cursor = Search(filter))
{
return(cursor.NextFeature() != null);
}
}
/// <summary>
/// 从另一张表复制数据
/// </summary>
/// <param name="ZFClass"></param>
/// <param name="clear">是否清空原数据</param>
public void CopyFrom(ZFeatureClass ZFClass, bool clear = false)
{
if (clear)
{
Delete();
}
ZFeatureCursor cursor = ZFClass.Search();
CopyFrom(cursor);
}
/// <summary>
/// 从查询结果复制数据
/// </summary>
/// <param name="cursor"></param>
public void CopyFrom(ZFeatureCursor cursor)
{
IFeatureCursor this_cursor = featureClass.Insert(true);
ZFeature feature = null;
while (null != (feature = cursor.NextFeature()))
{
IFeatureBuffer buffer = featureClass.CreateFeatureBuffer();
buffer.Shape = feature.Shape.geometry;
for (int i = 0; i < featureClass.Fields.FieldCount; i++)
{
buffer.Value[i] = feature.GetValue(i);
}
this_cursor.InsertFeature(buffer);
}
this_cursor.Flush();
}
