/// <summary>
/// 执行转换
/// </summary>
/// <param name="bIgnoreHeadError">是否忽略头文件的错误</param>
/// <returns></returns>
public EnumVCT2MDBExchangeInfo Exchange(bool bAllowDefaultProjection)
{
///指示当前是否在读取VCT实体
bool bIsReadEntity = false;
///指示当前是否在读取VCT属性
bool bIsReadAtti = false;
try
{
//读取头节点
FileData.HeadNode headNode = m_VCTFile.ReadHeadNode();
if (headNode != null)
{
//创建数据集
ESRIData.Dataset dataset = m_MDBFile.CreateDataset(headNode, m_strDataSetName);
///数据集的空间参考创建失败
if (dataset.ESRIDataset==null)
{
return EnumVCT2MDBExchangeInfo.DATASETERROR;
}
IGeoDataset pDataset = dataset.ESRIDataset as IGeoDataset;
if (pDataset!=null&&
pDataset.SpatialReference is UnknownCoordinateSystemClass && !bAllowDefaultProjection)
{
return EnumVCT2MDBExchangeInfo.PROJECTIONERROR;
}
if (dataset != null)
{
//读取要素参数节点和表结构节点
Hashtable arrFeatureCodeNode = m_VCTFile.ReadFeatureCodeNodes();
///读取要素代码错误
if (arrFeatureCodeNode == null)
{
return EnumVCT2MDBExchangeInfo.FEATURECODEERROR;
}
List<FileData.TableStructureNode> arrTableStructureNode = m_VCTFile.ReadTableStructureNodes();
///读取要素代码错误
if (arrTableStructureNode == null)
{
return EnumVCT2MDBExchangeInfo.FEATUREATRRIBUTE;
}
if (arrFeatureCodeNode != null && arrTableStructureNode != null)
{
//创建图层
//ESRIData.FeatureLayerFactory featureLayerFactory = new ESRIData.FeatureLayerFactory(dataset.Workspace);
//featureLayerFactory.CreateFeatureLayers(arrTableStructureNode, arrFeatureCodeNode);
//dataset.LayerFactory = featureLayerFactory;
dataset.CreateFeatureLayers(arrTableStructureNode, arrFeatureCodeNode);
//读取空间实体节点
string strFeatureCode = "";//上一个实体所属图层的要素代码
ESRIData.FeatureLayer featureLayer = null;
ESRIData.TableLayer tableLayer = null;
FileData.EntityNode entityNode;
bIsReadEntity = true;///开始读取实体
while ((entityNode = m_VCTFile.ReadEntityNode()) != null)
{
//获取实体所属图层
if (strFeatureCode != entityNode.FeatureCode)
tableLayer = dataset.GetFeatureLayerByCode(entityNode.FeatureCode);
//创建空间实体对象
featureLayer = tableLayer as FeatureLayer;
if (featureLayer != null)
{
featureLayer.CreateFeatureEntity(entityNode);
}
strFeatureCode = entityNode.FeatureCode;
}
//读取属性节点
FileData.TableNode tableNode = null;
bIsReadAtti = true;///开始读取VCT属性
while ((tableNode = m_VCTFile.ReadTableNode()) != null)
{
//获取属性表对象
tableLayer = dataset.GetFeatureLayerByName(tableNode.TableName);
featureLayer = tableLayer as FeatureLayer;
if (featureLayer != null)
{
//读取数据表记录
//FileData.RecordNode recordNode = null;
//while ((recordNode = m_VCTFile.ReadRecordNode()) != null)
//{
// ESRIData.FeatureEntity featureEntity = featureLayer.GetFeatureEntityByID(recordNode.EntityID);
// featureEntity.AttachAttribute(recordNode);
//}
List<FileData.RecordNode> arrRecordNode = m_VCTFile.ReadRecordNodes();
if (arrRecordNode.Count > 0)
{
arrRecordNode.Sort();
List<ESRIData.FeatureEntity> arrFeatureEntity = featureLayer.GetFeatureEntitys();
if (arrFeatureEntity.Count > 0)
{
arrFeatureEntity.Sort();
int j = 0;
for (int i = 0; i < arrFeatureEntity.Count; i++)
{
for (; j < arrRecordNode.Count; j++)
{
if (arrFeatureEntity[i].EntityID == arrRecordNode[j].EntityID)
arrFeatureEntity[i].AttachAttribute(arrRecordNode[j], featureLayer.StructureNode);
else if (arrFeatureEntity[i].EntityID < arrRecordNode[j].EntityID)
{
break;
}
else
{
//插入
}
}
}
arrFeatureEntity.Clear();
arrFeatureEntity = null;
}
else
{
//插入
}
arrRecordNode.Clear();
arrRecordNode = null;
}
}
else
{
///add by zengping 2011-4-24添加属性记录
if (tableLayer != null)
{
List<FileData.RecordNode> arrRecordNode = m_VCTFile.ReadRecordNodes();
foreach (FileData.RecordNode Recorditem in arrRecordNode)
{
tableLayer.InsertAttibuteTableRecord(Recorditem);
}
arrRecordNode.Clear();
arrRecordNode = null;
}
else
tableNode = null;
}
}
tableLayer = null;
arrFeatureCodeNode.Clear();
arrTableStructureNode.Clear();
arrTableStructureNode = null;
arrFeatureCodeNode = null;
if (bAllowDefaultProjection && dataset.Projection.SpatialReference is UnknownCoordinateSystemClass)
return EnumVCT2MDBExchangeInfo.SUCCESSWITHDEFAULTPROJECTION;
else
return EnumVCT2MDBExchangeInfo.EXCHANGESUCCESS;
}
dataset.Dispose();
}
else
{
///获取数据集错误
return EnumVCT2MDBExchangeInfo.DATASETERROR;
}
headNode = null;
}
else
{
return EnumVCT2MDBExchangeInfo.HEADFILEERROR;
}
return EnumVCT2MDBExchangeInfo.EXCHANGEFAIL;
}
catch (Exception ex)
{
LogAPI.WriteErrorLog(ex);
///读取实体过程中出错
if (bIsReadEntity && !bIsReadAtti)
return EnumVCT2MDBExchangeInfo.FEATUREENTY;
///读取属性过程中出错
else if (bIsReadEntity && bIsReadAtti)
return EnumVCT2MDBExchangeInfo.FEATUREATRRIBUTE;
return EnumVCT2MDBExchangeInfo.EXCHANGUNKNOWEERROR;
}
finally
{
GC.Collect();
}
}