3 files changed, 200 insertions, 0 deletions
diff --git a/src/client/northstar/core/attribute/AttributeModel.ts b/src/client/northstar/core/attribute/AttributeModel.ts
new file mode 100644
index 000000000..124a5b45a
--- /dev/null
+++ b/src/client/northstar/core/attribute/AttributeModel.ts
@@ -0,0 +1,111 @@
+import { Attribute, DataType, VisualizationHint } from '../../model/idea/idea'
+import { BaseObject } from '../BaseObject'
+import { observable } from "mobx";
+
+export abstract class AttributeModel extends BaseObject {
+    public abstract get DisplayName(): string;
+    public abstract get CodeName(): string;
+    public abstract get DataType(): DataType;
+    public abstract get VisualizationHints(): VisualizationHint[];
+}
+
+export class ColumnAttributeModel extends AttributeModel {
+    public Attribute: Attribute;
+
+    constructor(attribute: Attribute) {
+        super();
+        this.Attribute = attribute;
+    }
+
+    public get DataType(): DataType {
+        return this.Attribute.dataType ? this.Attribute.dataType : DataType.Undefined;
+    }
+
+    public get DisplayName(): string {
+        return this.Attribute.displayName ? this.Attribute.displayName.ReplaceAll("_", " ") : "";
+    }
+
+    public get CodeName(): string {
+        return this.Attribute.rawName ? this.Attribute.rawName : "";
+    }
+
+    public get VisualizationHints(): VisualizationHint[] {
+        return this.Attribute.visualizationHints ? this.Attribute.visualizationHints : [];
+    }
+
+    public Equals(other: ColumnAttributeModel): boolean {
+        return this.Attribute.rawName == other.Attribute.rawName;
+    }
+}
+
+export class CodeAttributeModel extends AttributeModel {
+    private _visualizationHints: VisualizationHint[];
+
+    public CodeName: string;
+
+    @observable
+    public Code: string;
+
+    constructor(code: string, codeName: string, displayName: string, visualizationHints: VisualizationHint[]) {
+        super();
+        this.Code = code;
+        this.CodeName = codeName;
+        this.DisplayName = displayName;
+        this._visualizationHints = visualizationHints;
+    }
+
+    public get DataType(): DataType {
+        return DataType.Undefined;
+    }
+
+    @observable
+    public DisplayName: string;
+
+    public get VisualizationHints(): VisualizationHint[] {
+        return this._visualizationHints;
+    }
+
+    public Equals(other: CodeAttributeModel): boolean {
+        return this.CodeName === other.CodeName;
+    }
+
+}
+
+export class BackendAttributeModel extends AttributeModel {
+    private _dataType: DataType;
+    private _displayName: string;
+    private _codeName: string;
+    private _visualizationHints: VisualizationHint[];
+
+    public Id: string;
+
+    constructor(id: string, dataType: DataType, displayName: string, codeName: string, visualizationHints: VisualizationHint[]) {
+        super();
+        this.Id = id;
+        this._dataType = dataType;
+        this._displayName = displayName;
+        this._codeName = codeName;
+        this._visualizationHints = visualizationHints;
+    }
+
+    public get DataType(): DataType {
+        return this._dataType;
+    }
+
+    public get DisplayName(): string {
+        return this._displayName.ReplaceAll("_", " ");;
+    }
+
+    public get CodeName(): string {
+        return this._codeName;
+    }
+
+    public get VisualizationHints(): VisualizationHint[] {
+        return this._visualizationHints;
+    }
+
+    public Equals(other: BackendAttributeModel): boolean {
+        return this.Id == other.Id;
+    }
+
+}
+\ No newline at end of file
diff --git a/src/client/northstar/core/attribute/AttributeTransformationModel.ts b/src/client/northstar/core/attribute/AttributeTransformationModel.ts
new file mode 100644
index 000000000..cc5aa7154
--- /dev/null
+++ b/src/client/northstar/core/attribute/AttributeTransformationModel.ts
@@ -0,0 +1,47 @@
+;
+import { computed, observable } from "mobx";
+import { AggregateFunction } from "../../model/idea/idea";
+import { AttributeModel } from "./AttributeModel";
+import { IEquatable } from "../../utils/IEquatable";
+
+export class AttributeTransformationModel implements IEquatable {
+
+    @observable public AggregateFunction: AggregateFunction;
+    @observable public AttributeModel: AttributeModel;
+
+    constructor(attributeModel: AttributeModel, aggregateFunction: AggregateFunction = AggregateFunction.None) {
+        this.AttributeModel = attributeModel;
+        this.AggregateFunction = aggregateFunction;
+    }
+
+    @computed
+    public get PresentedName(): string {
+        var displayName = this.AttributeModel.DisplayName;
+        if (this.AggregateFunction === AggregateFunction.Count) {
+            return "count";
+        }
+        if (this.AggregateFunction === AggregateFunction.Avg)
+            displayName = "avg(" + displayName + ")";
+        else if (this.AggregateFunction === AggregateFunction.Max)
+            displayName = "max(" + displayName + ")";
+        else if (this.AggregateFunction === AggregateFunction.Min)
+            displayName = "min(" + displayName + ")";
+        else if (this.AggregateFunction === AggregateFunction.Sum)
+            displayName = "sum(" + displayName + ")";
+        else if (this.AggregateFunction === AggregateFunction.SumE)
+            displayName = "sumE(" + displayName + ")";
+
+        return displayName;
+    }
+
+    public clone(): AttributeTransformationModel {
+        var clone = new AttributeTransformationModel(this.AttributeModel);
+        clone.AggregateFunction = this.AggregateFunction;
+        return clone;
+    }
+
+    public Equals(other: AttributeTransformationModel): boolean {
+        return this.AggregateFunction == other.AggregateFunction &&
+            this.AttributeModel.Equals(other.AttributeModel);
+    }
+}
+\ No newline at end of file
diff --git a/src/client/northstar/core/attribute/CalculatedAttributeModel.ts b/src/client/northstar/core/attribute/CalculatedAttributeModel.ts
new file mode 100644
index 000000000..ab96c794d
--- /dev/null
+++ b/src/client/northstar/core/attribute/CalculatedAttributeModel.ts
@@ -0,0 +1,42 @@
+import { BackendAttributeModel, AttributeModel, CodeAttributeModel } from "./AttributeModel";
+import { DataType, VisualizationHint } from '../../model/idea/idea'
+
+export class CalculatedAttributeManager {
+    public static AllCalculatedAttributes: Array<AttributeModel> = new Array<AttributeModel>();
+
+    public static Clear() {
+        this.AllCalculatedAttributes = new Array<AttributeModel>();
+    }
+
+    public static CreateBackendAttributeModel(id: string, dataType: DataType, displayName: string, codeName: string, visualizationHints: VisualizationHint[]): BackendAttributeModel {
+        var filtered = this.AllCalculatedAttributes.filter(am => {
+            if (am instanceof BackendAttributeModel &&
+                am.Id == id) {
+                return true;
+            }
+            return false;
+        });
+        if (filtered.length > 0) {
+            return filtered[0] as BackendAttributeModel;
+        }
+        var newAttr = new BackendAttributeModel(id, dataType, displayName, codeName, visualizationHints);
+        this.AllCalculatedAttributes.push(newAttr);
+        return newAttr;
+    }
+
+    public static CreateCodeAttributeModel(code: string, codeName: string, visualizationHints: VisualizationHint[]): CodeAttributeModel {
+        var filtered = this.AllCalculatedAttributes.filter(am => {
+            if (am instanceof CodeAttributeModel &&
+                am.CodeName == codeName) {
+                return true;
+            }
+            return false;
+        });
+        if (filtered.length > 0) {
+            return filtered[0] as CodeAttributeModel;
+        }
+        var newAttr = new CodeAttributeModel(code, codeName, codeName.ReplaceAll("_", " "), visualizationHints);
+        this.AllCalculatedAttributes.push(newAttr);
+        return newAttr;
+    }
+}
+\ No newline at end of file