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add tests; split up logic of diagram creation
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| package diagram | ||
|
|
||
| import ( | ||
| "github.com/KarnerTh/mermerd/config" | ||
| "github.com/KarnerTh/mermerd/database" | ||
| ) | ||
|
|
||
| func getRelation(constraint database.ConstraintResult) ErdRelationType { | ||
| if constraint.IsPrimary && !constraint.HasMultiplePK { | ||
| return relationOneToOne | ||
| } else { | ||
| return relationManyToOne | ||
| } | ||
| } | ||
|
|
||
| func tableNameInSlice(slice []ErdTableData, tableName string) bool { | ||
| for _, sliceItem := range slice { | ||
| if sliceItem.Name == tableName { | ||
| return true | ||
| } | ||
| } | ||
|
|
||
| return false | ||
| } | ||
|
|
||
| func getAttributeKey(column database.ColumnResult) ErdAttributeKey { | ||
| if column.IsPrimary { | ||
| return primaryKey | ||
| } | ||
|
|
||
| if column.IsForeign { | ||
| return foreignKey | ||
| } | ||
|
|
||
| return none | ||
| } | ||
|
|
||
| func getColumnData(config config.MermerdConfig, column database.ColumnResult) ErdColumnData { | ||
| attributeKey := getAttributeKey(column) | ||
| if config.OmitAttributeKeys() { | ||
| attributeKey = none | ||
| } | ||
|
|
||
| var enumValues string | ||
| if config.ShowEnumValues() { | ||
| enumValues = column.EnumValues | ||
| } | ||
|
|
||
| return ErdColumnData{ | ||
| Name: column.Name, | ||
| DataType: column.DataType, | ||
| EnumValues: enumValues, | ||
| AttributeKey: attributeKey, | ||
| } | ||
| } | ||
|
|
||
| func shouldSkipConstraint(config config.MermerdConfig, tables []ErdTableData, constraint database.ConstraintResult) bool { | ||
| if config.ShowAllConstraints() { | ||
| return false | ||
| } | ||
|
|
||
| // if config for all constraints is not set, only show constraints of selected tables | ||
| return !(tableNameInSlice(tables, constraint.PkTable) && tableNameInSlice(tables, constraint.FkTable)) | ||
| } | ||
|
|
||
| func getConstraintData(config config.MermerdConfig, constraint database.ConstraintResult) ErdConstraintData { | ||
| constraintLabel := constraint.ColumnName | ||
| if config.OmitConstraintLabels() { | ||
| constraintLabel = "" | ||
| } | ||
|
|
||
| return ErdConstraintData{ | ||
| PkTableName: constraint.PkTable, | ||
| FkTableName: constraint.FkTable, | ||
| Relation: getRelation(constraint), | ||
| ConstraintLabel: constraintLabel, | ||
| } | ||
| } |
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