/// <summary>
/// Create the IComponentMapping object for a specific component in a mapping depending on the type of mapping e.g. 1
/// DSD component - N local columns e.t.c.
/// </summary>
/// <param name="component">
/// The component entity
/// </param>
/// <param name="mapping">
/// The mapping entity
/// </param>
/// <returns>
/// An IComponentMapping object based on the mapping or null if the mapping is not supported
/// </returns>
/// <exception cref="TranscodingException">
/// Invalid or unsupported mapping
/// </exception>
public static IComponentMapping CreateComponentMapping(ComponentEntity component, MappingEntity mapping)
{
IComponentMapping componentMapping;
if (mapping.Components.Count == 1)
{
// one component
switch (mapping.Columns.Count)
{
case 0: // no columns => constant mapping
if (mapping.Constant != null)
{
componentMapping = new ComponentMapping1C();
}
else
{
throw new TranscodingException(string.Format(CultureInfo.CurrentCulture, ErrorMessages.ComponentMappingNoMappingFormat1, mapping.Components[0]));
}
break;
case 1: // 1 to 1 mapping
if (mapping.Transcoding != null)
{
// with transcoding
if (mapping.Transcoding.TranscodingRules.ColumnAsKeyPosition.Count > 0 && mapping.Transcoding.TranscodingRules.ComponentAsKeyPosition.Count > 0)
{
componentMapping = new ComponentMapping1To1T();
}
else
{
// transcoding enabled but no transcoding rules
// TODO log a warning
componentMapping = new ComponentMapping1To1(); // disable transcoding
}
}
else
{
// without transcoding
componentMapping = new ComponentMapping1To1();
}
break;
default: // N columns where N > 1
if (mapping.Transcoding != null)
{
// transcoding is mandatory
if (mapping.Transcoding.TranscodingRules.ColumnAsKeyPosition.Count > 0 && mapping.Transcoding.TranscodingRules.ComponentAsKeyPosition.Count > 0)
{
// there are transcoding rules
componentMapping = new ComponentMapping1N();
}
else
{
throw new TranscodingException(string.Format(CultureInfo.CurrentCulture, ErrorMessages.ComponentMappingNoTranscodingRulesFormat1, component.Id));
}
}
else
{
throw new TranscodingException(string.Format(CultureInfo.CurrentCulture, ErrorMessages.ComponentMappingNoTranscodingFormat1, component.Id));
}
break;
}
}
else if (mapping.Columns.Count == 1 && mapping.Components.Count > 1)
{
// N components to 1 column mapping
if (mapping.Transcoding != null)
{
// transcoding is mandatory
if (mapping.Transcoding.TranscodingRules.ColumnAsKeyPosition.Count > 0 && mapping.Transcoding.TranscodingRules.ComponentAsKeyPosition.Count > 0)
{
// there are transcoding rules
componentMapping = new ComponentMappingNto1(mapping.Transcoding.TranscodingRules.ComponentAsKeyPosition[component.SysId]);
}
else
{
throw new TranscodingException(string.Format(CultureInfo.CurrentCulture, ErrorMessages.ComponentMappingNoTranscodingRulesFormat1, component.Id));
}
}
else
{
throw new TranscodingException(string.Format(CultureInfo.CurrentCulture, ErrorMessages.ComponentMappingNoTranscodingFormat1, component.Id));
}
}
else
{
throw new TranscodingException(string.Format(CultureInfo.CurrentCulture, ErrorMessages.ComponentMappingNNMapping, component.Id));
}
componentMapping.Mapping = mapping;
componentMapping.Component = component;
return(componentMapping);
}
/// <summary>
/// Create the IComponentMapping object for a specific component in a mapping depending on the type of mapping e.g. 1
/// DSD component - N local columns e.t.c.
/// </summary>
/// <param name="component">
/// The component entity
/// </param>
/// <param name="mapping">
/// The mapping entity
/// </param>
/// <returns>
/// An IComponentMapping object based on the mapping or null if the mapping is not supported
/// </returns>
/// <exception cref="TranscodingException">
/// Invalid or unsupported mapping
/// </exception>
public static IComponentMapping CreateComponentMapping(ComponentEntity component, MappingEntity mapping)
{
IComponentMapping componentMapping;
if (mapping.Components.Count == 1)
{
// one component
switch (mapping.Columns.Count)
{
case 0: // no columns => constant mapping
if (mapping.Constant != null)
{
componentMapping = new ComponentMapping1C();
}
else
{
throw new TranscodingException(string.Format(CultureInfo.CurrentCulture, ErrorMessages.ComponentMappingNoMappingFormat1, mapping.Components[0]));
}
break;
case 1: // 1 to 1 mapping
if (mapping.Transcoding != null)
{
// with transcoding
if (mapping.Transcoding.TranscodingRules.ColumnAsKeyPosition.Count > 0 && mapping.Transcoding.TranscodingRules.ComponentAsKeyPosition.Count > 0)
{
componentMapping = new ComponentMapping1To1T();
}
else
{
// transcoding enabled but no transcoding rules
// TODO log a warning
componentMapping = new ComponentMapping1To1(); // disable transcoding
}
}
else
{
// without transcoding
componentMapping = new ComponentMapping1To1();
}
break;
default: // N columns where N > 1
if (mapping.Transcoding != null)
{
// transcoding is mandatory
if (mapping.Transcoding.TranscodingRules.ColumnAsKeyPosition.Count > 0 && mapping.Transcoding.TranscodingRules.ComponentAsKeyPosition.Count > 0)
{
// there are transcoding rules
componentMapping = new ComponentMapping1N();
}
else
{
throw new TranscodingException(string.Format(CultureInfo.CurrentCulture, ErrorMessages.ComponentMappingNoTranscodingRulesFormat1, component.Id));
}
}
else
{
throw new TranscodingException(string.Format(CultureInfo.CurrentCulture, ErrorMessages.ComponentMappingNoTranscodingFormat1, component.Id));
}
break;
}
}
else if (mapping.Columns.Count == 1 && mapping.Components.Count > 1)
{
// N components to 1 column mapping
if (mapping.Transcoding != null)
{
// transcoding is mandatory
if (mapping.Transcoding.TranscodingRules.ColumnAsKeyPosition.Count > 0 && mapping.Transcoding.TranscodingRules.ComponentAsKeyPosition.Count > 0)
{
// there are transcoding rules
componentMapping = new ComponentMappingNto1(mapping.Transcoding.TranscodingRules.ComponentAsKeyPosition[component.SysId]);
}
else
{
throw new TranscodingException(string.Format(CultureInfo.CurrentCulture, ErrorMessages.ComponentMappingNoTranscodingRulesFormat1, component.Id));
}
}
else
{
throw new TranscodingException(string.Format(CultureInfo.CurrentCulture, ErrorMessages.ComponentMappingNoTranscodingFormat1, component.Id));
}
}
else
{
throw new TranscodingException(string.Format(CultureInfo.CurrentCulture, ErrorMessages.ComponentMappingNNMapping, component.Id));
}
componentMapping.Mapping = mapping;
componentMapping.Component = component;
return componentMapping;
}