/// <summary>
/// Override to filter-out some fields from serialization to JSON, or change field values.
/// Return name null to indicate that field should be filtered-out(excluded from serialization to JSON)
/// </summary>
protected virtual object FilterJsonSerializerField(Schema.FieldDef def, JsonWritingOptions options, out string name)
{
var tname = options != null ? options.RowMapTargetName : null;
if (tname.IsNotNullOrWhiteSpace())
{
FieldAttribute attr;
name = def.GetBackendNameForTarget(tname, out attr);
if (attr != null)
{
if (attr.StoreFlag == StoreFlag.None || attr.StoreFlag == StoreFlag.OnlyLoad)
{
name = null;
return(null);
}
var dflt = attr.Default;
if (dflt != null)
{
var value = GetFieldValue(def);
if (dflt.Equals(value))
{
name = null;
return(null);
}
return(value);
}
}
}
else
{
name = def.Name;
}
return(name.IsNotNullOrWhiteSpace() ? GetFieldValue(def) : null);
}
private void field(string targetName, Schema.FieldDef def, IMetadataGenerator context, ConfigSectionNode data, TypedDoc doc)
{
var fname = def.GetBackendNameForTarget(targetName, out var fatr);
if (fatr == null)
{
return;
}
if (context.DetailLevel > MetadataDetailLevel.Public)
{
data.AddAttributeNode("prop-name", def.Name);
data.AddAttributeNode("prop-type", def.Type.AssemblyQualifiedName);
data.AddAttributeNode("non-ui", fatr.NonUI);
data.AddAttributeNode("is-arow", fatr.IsArow);
data.AddAttributeNode("store-flag", fatr.StoreFlag);
data.AddAttributeNode("backend-type", fatr.BackendType);
//try to disclose ALL metadata (as we are above PUBLIC)
if (fatr.Metadata != null && fatr.Metadata.Exists)
{
var metad = data.AddChildNode("meta");
metad.MergeSections(fatr.Metadata);
metad.MergeAttributes(fatr.Metadata);
}
}
else //try to disclose pub-only metadata
{
var pubSection = context.PublicMetadataSection;
if (fatr.Metadata != null && pubSection.IsNotNullOrWhiteSpace())
{
var metasrc = fatr.Metadata[pubSection];//<-- pub metadata only
if (metasrc.Exists)
{
var metad = data.AddChildNode("meta");
metad.MergeSections(metasrc);
metad.MergeAttributes(metasrc);
}
}
}
data.AddAttributeNode("name", fname);
data.AddAttributeNode("type", context.AddTypeToDescribe(def.Type));
data.AddAttributeNode("order", def.Order);
if (fatr.Description.IsNotNullOrWhiteSpace())
{
data.AddAttributeNode("description", fatr.Description);
}
data.AddAttributeNode("key", fatr.Key);
data.AddAttributeNode("kind", fatr.Kind);
data.AddAttributeNode("required", fatr.Required);
data.AddAttributeNode("visible", fatr.Required);
data.AddAttributeNode("case", fatr.CharCase);
if (fatr.Default != null)
{
data.AddAttributeNode("default", fatr.Default);
}
if (fatr.DisplayFormat.IsNotNullOrWhiteSpace())
{
data.AddAttributeNode("display-format", fatr.DisplayFormat);
}
if (fatr.FormatRegExp.IsNotNullOrWhiteSpace())
{
data.AddAttributeNode("format-reg-exp", fatr.FormatRegExp);
}
if (fatr.FormatDescription.IsNotNullOrWhiteSpace())
{
data.AddAttributeNode("format-description", fatr.FormatDescription);
}
if (fatr.Max != null)
{
data.AddAttributeNode("max", fatr.Max);
}
if (fatr.Min != null)
{
data.AddAttributeNode("min", fatr.Min);
}
if (fatr.MinLength > 0 || fatr.MaxLength > 0)
{
data.AddAttributeNode("min-len", fatr.MinLength);
}
if (fatr.MinLength > 0 || fatr.MaxLength > 0)
{
data.AddAttributeNode("max-len", fatr.MaxLength);
}
//add values from field attribute .ValueList property
var nvlist = new Lazy <ConfigSectionNode>(() => data.AddChildNode("value-list"));
if (fatr.HasValueList)
{
fatr.ParseValueList().ForEach(item => nvlist.Value.AddAttributeNode(item.Key, item.Value));
}
//if doc!=null call doc.GetClientFieldValueList on the instance to get values from Database lookups etc...
if (doc != null)
{
var lookup = doc.GetDynamicFieldValueList(def, targetName, null);
if (lookup != null)//non-null blank lookup is treated as blank lookup overshadowing the hard-coded choices from .ValueList
{
if (nvlist.IsValueCreated)
{
nvlist.Value.DeleteAllAttributes();
}
lookup.ForEach(item => nvlist.Value.AddAttributeNode(item.Key, item.Value));
}
}
}
private void field(Schema.FieldDef def, IMetadataGenerator context, ConfigSectionNode data, TypedDoc doc)
{
var fname = def.GetBackendNameForTarget(context.DataTargetName, out var fatr);
if (fatr == null)
{
return;
}
if (context.DetailLevel > MetadataDetailLevel.Public)
{
data.AddAttributeNode("prop-name", def.Name);
data.AddAttributeNode("prop-type", def.Type.AssemblyQualifiedName);
data.AddAttributeNode("non-ui", fatr.NonUI);
data.AddAttributeNode("is-arow", fatr.IsArow);
data.AddAttributeNode("store-flag", fatr.StoreFlag);
data.AddAttributeNode("backend-type", fatr.BackendType);
if (fatr.Metadata != null)
{
data.AddChildNode(fatr.Metadata);
}
}
data.AddAttributeNode("name", fname);
data.AddAttributeNode("type", context.AddTypeToDescribe(def.Type));
data.AddAttributeNode("order", def.Order);
if (fatr.Description.IsNotNullOrWhiteSpace())
{
data.AddAttributeNode("description", fatr.Description);
}
data.AddAttributeNode("key", fatr.Key);
if (def.Type == typeof(string))
{
data.AddAttributeNode("kind", fatr.Kind);
}
data.AddAttributeNode("required", fatr.Required);
data.AddAttributeNode("visible", fatr.Required);
data.AddAttributeNode("case", fatr.CharCase);
if (fatr.Default != null)
{
data.AddAttributeNode("default", fatr.Default);
}
if (fatr.DisplayFormat.IsNotNullOrWhiteSpace())
{
data.AddAttributeNode("display-format", fatr.DisplayFormat);
}
if (fatr.FormatRegExp.IsNotNullOrWhiteSpace())
{
data.AddAttributeNode("format-reg-exp", fatr.FormatRegExp);
}
if (fatr.FormatDescription.IsNotNullOrWhiteSpace())
{
data.AddAttributeNode("format-description", fatr.FormatDescription);
}
if (fatr.Max != null)
{
data.AddAttributeNode("max", fatr.Max);
}
if (fatr.Min != null)
{
data.AddAttributeNode("min", fatr.Min);
}
if (fatr.MinLength > 0 || fatr.MaxLength > 0)
{
data.AddAttributeNode("min-len", fatr.MinLength);
}
if (fatr.MinLength > 0 || fatr.MaxLength > 0)
{
data.AddAttributeNode("max-len", fatr.MaxLength);
}
//add values from field attribute .ValueList property
var nvlist = new Lazy <ConfigSectionNode>(() => data.AddChildNode("value-list"));
if (fatr.HasValueList)
{
fatr.ParseValueList().ForEach(item => nvlist.Value.AddAttributeNode(item.Key, item.Value));
}
//if doc!=null call doc.GetClientFieldValueList on the instance to get values from Database lookups etc...
if (doc != null)
{
var lookup = doc.GetClientFieldValueList(def, context.DataTargetName, null);
if (lookup != null)
{
lookup.ForEach(item => nvlist.Value.AddAttributeNode(item.Key, item.Value));
}
}
}
