public void Visit(MissingFieldExpression expression)
{
_queryBuilder
.Append("NOT IS_DEFINED(")
.Append(_instanceVariableName).Append(".").Append(GetFieldName(expression))
.Append(")");
}
public object VisitMissingField(MissingFieldExpression expression, Context context)
{
_queryBuilder
.Append("NOT IS_DEFINED(")
.Append(context.InstanceVariableName).Append('.').Append(GetFieldName(expression, context))
.Append(')');
return(null);
}
public static void ValidateMissingFieldExpression(
Expression expression,
FieldName expectedFieldName)
{
MissingFieldExpression mfExpression = Assert.IsType <MissingFieldExpression>(expression);
Assert.Equal(expectedFieldName, mfExpression.FieldName);
}
protected static SearchParameterQueryGeneratorContext VisitMissingFieldImpl(MissingFieldExpression expression, SearchParameterQueryGeneratorContext context, FieldName expectedFieldName, Column column)
{
if (expression.FieldName != expectedFieldName)
{
throw new InvalidOperationException($"Unexpected missing field {expression.FieldName}");
}
AppendColumnName(context, column, expression).Append(" IS NULL");
return(context);
}
protected static SearchParameterQueryGeneratorContext VisitMissingFieldImpl(MissingFieldExpression expression, SearchParameterQueryGeneratorContext context, FieldName expectedFieldName, Column column)
{
if (expression.FieldName != expectedFieldName)
{
throw new InvalidOperationException($"Unexpected missing field {expression.FieldName}");
}
context.StringBuilder.Append(column, context.TableAlias).Append(expression.ComponentIndex + 1).Append(" IS NULL");
return(context);
}
public override SearchParameterQueryGeneratorContext VisitMissingField(MissingFieldExpression expression, SearchParameterQueryGeneratorContext context)
{
return(VisitMissingFieldImpl(expression, context, FieldName.TokenSystem, V1.TokenSearchParam.SystemId));
}
public override SearchParameterQueryGeneratorContext VisitMissingField(MissingFieldExpression expression, SearchParameterQueryGeneratorContext context)
{
return(VisitMissingFieldImpl(expression, context, FieldName.ReferenceBaseUri, VLatest.ReferenceSearchParam.BaseUri));
}
public NormalizedSearchParameterQueryGenerator VisitMissingField(MissingFieldExpression expression, object context)
{
return(TokenSearchParameterQueryGenerator.Instance);
}
public override SearchParameterQueryGeneratorContext VisitMissingField(MissingFieldExpression expression, SearchParameterQueryGeneratorContext context)
{
return(expression.AcceptVisitor(_componentHandlers[(int)expression.ComponentIndex], context));
}
public SearchParamTableExpressionQueryGenerator VisitMissingField(MissingFieldExpression expression, object context)
{
return(TokenQueryGenerator.Instance);
}
