private DbCommandTree MakeCommandTree()
{
DbCommandTree dbCommandTree = (DbCommandTree)null;
if (this._commandTreeSetByUser != null)
{
dbCommandTree = this._commandTreeSetByUser;
}
else if (CommandType.Text == this.CommandType)
{
if (!string.IsNullOrEmpty(this._esqlCommandText))
{
dbCommandTree = CqlQuery.Compile(this._esqlCommandText, (Perspective) new ModelPerspective(this._connection.GetMetadataWorkspace()), (ParserOptions)null, this.GetParameterTypeUsage().Select <KeyValuePair <string, TypeUsage>, DbParameterReferenceExpression>((Func <KeyValuePair <string, TypeUsage>, DbParameterReferenceExpression>)(paramInfo => paramInfo.Value.Parameter(paramInfo.Key)))).CommandTree;
}
else
{
if (this._isCommandDefinitionBased)
{
throw new InvalidOperationException(Strings.EntityClient_CannotReprepareCommandDefinitionBasedCommand);
}
throw new InvalidOperationException(Strings.EntityClient_NoCommandText);
}
}
else if (CommandType.StoredProcedure == this.CommandType)
{
dbCommandTree = (DbCommandTree) new DbFunctionCommandTree(this.Connection.GetMetadataWorkspace(), DataSpace.CSpace, this.DetermineFunctionImport(), (TypeUsage)null, (IEnumerable <KeyValuePair <string, TypeUsage> >) this.GetParameterTypeUsage());
}
return(dbCommandTree);
}
/// <summary>
/// Ensures we have the command tree, either the user passed us the tree, or an eSQL statement that we need to parse
/// </summary>
private void MakeCommandTree()
{
// We must have a connection before we come here
Debug.Assert(this._connection != null);
// Do the work only if we don't have a command tree yet
if (this._preparedCommandTree == null)
{
DbCommandTree resultTree = null;
if (this._commandTreeSetByUser != null)
{
resultTree = this._commandTreeSetByUser;
}
else
if (CommandType.Text == CommandType)
{
if (!string.IsNullOrEmpty(this._esqlCommandText))
{
// The perspective to be used for the query compilation
Perspective perspective = (Perspective) new ModelPerspective(_connection.GetMetadataWorkspace());
// get a dictionary of names and typeusage from entity parameter collection
Dictionary <string, TypeUsage> queryParams = GetParameterTypeUsage();
resultTree = CqlQuery.Compile(
this._esqlCommandText,
perspective,
null /*parser option - use default*/,
queryParams.Select(paramInfo => paramInfo.Value.Parameter(paramInfo.Key))).CommandTree;
}
else
{
// We have no command text, no command tree, so throw an exception
if (this._isCommandDefinitionBased)
{
// This command was based on a prepared command definition and has no command text,
// so reprepare is not possible. To create a new command with different parameters
// requires creating a new entity command definition and calling it's CreateCommand method.
throw EntityUtil.InvalidOperation(System.Data.Entity.Strings.EntityClient_CannotReprepareCommandDefinitionBasedCommand);
}
else
{
throw EntityUtil.InvalidOperation(System.Data.Entity.Strings.EntityClient_NoCommandText);
}
}
}
else if (CommandType.StoredProcedure == CommandType)
{
// get a dictionary of names and typeusage from entity parameter collection
IEnumerable <KeyValuePair <string, TypeUsage> > queryParams = GetParameterTypeUsage();
EdmFunction function = DetermineFunctionImport();
resultTree = new DbFunctionCommandTree(this.Connection.GetMetadataWorkspace(), DataSpace.CSpace, function, null, queryParams);
}
// After everything is good and succeeded, assign the result to our field
this._preparedCommandTree = resultTree;
}
}
// <summary>
// Ensures we have the command tree, either the user passed us the tree, or an eSQL statement that we need to parse
// </summary>
private DbCommandTree MakeCommandTree()
{
// We must have a connection before we come here
Debug.Assert(_connection != null);
DbCommandTree resultTree = null;
if (_commandTreeSetByUser != null)
{
resultTree = _commandTreeSetByUser;
}
else if (CommandType.Text == CommandType)
{
if (!string.IsNullOrEmpty(_esqlCommandText))
{
// The perspective to be used for the query compilation
Perspective perspective = new ModelPerspective(_connection.GetMetadataWorkspace());
// get a dictionary of names and typeusage from entity parameter collection
var queryParams = GetParameterTypeUsage();
resultTree = CqlQuery.Compile(
_esqlCommandText,
perspective,
null /*parser option - use default*/,
queryParams.Select(paramInfo => paramInfo.Value.Parameter(paramInfo.Key))).CommandTree;
}
else
{
// We have no command text, no command tree, so throw an exception
if (_isCommandDefinitionBased)
{
// This command was based on a prepared command definition and has no command text,
// so reprepare is not possible. To create a new command with different parameters
// requires creating a new entity command definition and calling it's CreateCommand method.
throw new InvalidOperationException(Strings.EntityClient_CannotReprepareCommandDefinitionBasedCommand);
}
else
{
throw new InvalidOperationException(Strings.EntityClient_NoCommandText);
}
}
}
else if (CommandType.StoredProcedure == CommandType)
{
// get a dictionary of names and typeusage from entity parameter collection
IEnumerable <KeyValuePair <string, TypeUsage> > queryParams = GetParameterTypeUsage();
var function = DetermineFunctionImport();
resultTree = new DbFunctionCommandTree(Connection.GetMetadataWorkspace(), DataSpace.CSpace, function, null, queryParams);
}
return(resultTree);
}
internal static DbCommandTree CompileView(
string viewDef,
StorageMappingItemCollection mappingItemCollection,
ParserOptions.CompilationMode compilationMode)
{
Perspective perspective = (Perspective) new TargetPerspective(mappingItemCollection.Workspace);
return(CqlQuery.Compile(viewDef, perspective, new ParserOptions()
{
ParserCompilationMode = compilationMode
}, (IEnumerable <DbParameterReferenceExpression>)null).CommandTree);
}
internal static DbCommandTree CompileView(
string viewDef,
StorageMappingItemCollection mappingItemCollection,
ParserOptions.CompilationMode compilationMode)
{
DebugCheck.NotEmpty(viewDef);
DebugCheck.NotNull(mappingItemCollection);
Perspective perspective = new TargetPerspective(mappingItemCollection.Workspace);
var parserOptions = new ParserOptions();
parserOptions.ParserCompilationMode = compilationMode;
var expr = CqlQuery.Compile(viewDef, perspective, parserOptions, null).CommandTree;
Debug.Assert(expr != null, "Compile returned empty tree?");
return(expr);
}
static internal DbCommandTree CompileView(
string viewDef,
StorageMappingItemCollection mappingItemCollection,
ParserOptions.CompilationMode compilationMode)
{
Debug.Assert(!String.IsNullOrEmpty(viewDef), "!String.IsNullOrEmpty(viewDef)");
Debug.Assert(mappingItemCollection != null, "mappingItemCollection != null");
Perspective perspective = new TargetPerspective(mappingItemCollection.Workspace);
ParserOptions parserOptions = new ParserOptions();
parserOptions.ParserCompilationMode = compilationMode;
DbCommandTree expr = CqlQuery.Compile(viewDef, perspective, parserOptions, null).CommandTree;
Debug.Assert(expr != null, "Compile returned empty tree?");
return(expr);
}
