SubsetNetworkEvaluators\SubsetHelper.cs
// Copyright 2012 ESRI // // All rights reserved under the copyright laws of the United States // and applicable international laws, treaties, and conventions. // // You may freely redistribute and use this sample code, with or // without modification, provided you include the original copyright // notice and use restrictions. // // See the use restrictions. // using System; using System.Collections.Generic; using System.Text; using System.Runtime.InteropServices; using System.Reflection; using System.ComponentModel; using ESRI.ArcGIS.esriSystem; using ESRI.ArcGIS.Geodatabase; /// <summary> /// Utility methods for working with parameter values, and other shared utilities in setting up /// these custom subset evaluators. /// </summary> namespace SubsetNetworkEvaluators { [Flags] public enum VarType { Empty = 0x0000, //VT_EMPTY Null = 0x0001, //VT_NULL Short = 0x0002, //VT_I2 Integer = 0x0003, //VT_I4 Float = 0x0004, //VT_R4 Double = 0x0005, //VT_R8 Date = 0x0007, //VT_DATE String = 0x0008, //VT_BSTR Bool = 0x000B, //VT_BOOL ComObject = 0x000D, //VT_UNKNOWN Array = 0x2000 //VT_ARRAY }; // enum VarType public class SubsetHelper { public static int FindParameter(IArray netAttributeParams, string searchName) { if (netAttributeParams == null || searchName.Length <= 0) return -1; string compareName; INetworkAttributeParameter netAttributeParam; int count = netAttributeParams.Count; for (int i = 0; i < count; ++i) { netAttributeParam = netAttributeParams.get_Element(i) as INetworkAttributeParameter; if (netAttributeParam != null) { compareName = netAttributeParam.Name; if (String.Compare(searchName, compareName, true) == 0) return i; } } return -1; } public static List<string> GetSourceNames(List<INetworkSource> netSources) { List<string> sourceNames = new List<string>(); if (netSources == null) return sourceNames; foreach (INetworkSource netSource in netSources) sourceNames.Add(netSource.Name); return sourceNames; } public static List<INetworkSource> GetSourceList(IArray netSourcesArray) { List<INetworkSource> netSources = new List<INetworkSource>(); int count = netSourcesArray.Count; INetworkSource netSource; for (int i = 0; i < count; ++i) { netSource = netSourcesArray.get_Element(i) as INetworkSource; if (netSource != null) netSources.Add(netSource); } return netSources; } public static List<INetworkSource> GetSourceList(List<INetworkSource> netSources, esriNetworkElementType eType) { List<esriNetworkElementType> eTypes = new List<esriNetworkElementType>(); eTypes.Add(eType); return GetSourceList(netSources, eTypes); } public static List<INetworkSource> GetSourceList(List<INetworkSource> netSources, List<esriNetworkElementType> eTypes) { List<INetworkSource> subList = new List<INetworkSource>(); if (netSources == null || eTypes == null) return subList; foreach (INetworkSource netSource in netSources) { foreach (esriNetworkElementType eType in eTypes) { if (netSource.ElementType == eType) { subList.Add(netSource); break; } } } return subList; } public static IArray RemoveAttributeByName(IArray netAttributes, string name) { return RemoveAttributesByKeyName(netAttributes, name, true); } public static IArray RemoveAttributesByPrefix(IArray netAttributes, string prefix) { return RemoveAttributesByKeyName(netAttributes, prefix, true); } public static IArray RemoveAttributesBySuffix(IArray netAttributes, string suffix) { return RemoveAttributesByKeyName(netAttributes, suffix, false); } public static IArray RemoveAttributesByKeyName(IArray netAttributes, string keyName, bool keyIsPrefix) { IArray preservedNetAttributes = new ArrayClass(); int keyNameLen = keyName.Length; int netAttributeNameLen; INetworkAttribute netAttribute; string netAttributeName; bool isKeyAttribute; bool ignoreCase = true; int count = netAttributes.Count; for (int i = 0; i < count; ++i) { netAttribute = netAttributes.get_Element(i) as INetworkAttribute; if (netAttribute == null) continue; netAttributeName = netAttribute.Name; netAttributeNameLen = netAttributeName.Length; isKeyAttribute = false; if (keyNameLen == 0) isKeyAttribute = false; else if (netAttributeNameLen < keyNameLen) isKeyAttribute = false; else { int startIndex = 0; if (!keyIsPrefix) startIndex = netAttributeNameLen - keyNameLen; if (String.Compare(netAttributeName.Substring(startIndex, keyNameLen), keyName, ignoreCase) == 0) isKeyAttribute = true; } if (!isKeyAttribute) preservedNetAttributes.Add(netAttribute); } return preservedNetAttributes; } public static List<int> FindAttributeIndexes(IArray netAttributes, esriNetworkAttributeUsageType usage, esriNetworkAttributeDataType dataType, bool searchTimeUnits, bool ignoreDataType) { INetworkAttribute2 netAttribute = null; esriNetworkAttributeUnits units = esriNetworkAttributeUnits.esriNAUUnknown; bool isSearchUnits = false; bool isUnknownUnits = false; bool isTimeUnits = false; List<int> netAttributeIndexes = new List<int>(); int count = netAttributes.Count; for (int i = 0; i < count; ++i) { netAttribute = netAttributes.get_Element(i) as INetworkAttribute2; if (netAttribute == null) continue; if (netAttribute.UsageType == usage && (ignoreDataType || netAttribute.DataType == dataType)) { units = netAttribute.Units; isSearchUnits = false; if (usage != esriNetworkAttributeUsageType.esriNAUTCost) isSearchUnits = true; else { isUnknownUnits = false; if (units == esriNetworkAttributeUnits.esriNAUUnknown) isUnknownUnits = true; isTimeUnits = false; if (!isUnknownUnits) { if (units == esriNetworkAttributeUnits.esriNAUMinutes || units == esriNetworkAttributeUnits.esriNAUSeconds || units == esriNetworkAttributeUnits.esriNAUHours || units == esriNetworkAttributeUnits.esriNAUDays) { isTimeUnits = true; } if (searchTimeUnits) isSearchUnits = isTimeUnits; else isSearchUnits = !isTimeUnits; } } if (isSearchUnits) netAttributeIndexes.Add(i); } } return netAttributeIndexes; } public static List<INetworkAttribute2> FindAttributes(IArray netAttributesArray, List<int> netAttributeIndexes) { List<INetworkAttribute2> netAttributes = new List<INetworkAttribute2>(); foreach (int i in netAttributeIndexes) { INetworkAttribute2 netAttribute = netAttributesArray.get_Element(i) as INetworkAttribute2; if (netAttribute != null) netAttributes.Add(netAttribute); } return netAttributes; } public static void SetDefaultEvaluator(IEvaluatedNetworkAttribute netAttribute, object defaultValue, esriNetworkElementType eType) { INetworkConstantEvaluator constEvaluator = new NetworkConstantEvaluatorClass(); constEvaluator.ConstantValue = defaultValue; INetworkEvaluator eval = constEvaluator as INetworkEvaluator; netAttribute.set_DefaultEvaluator(eType, eval); } public static void SetEvaluators(IEvaluatedNetworkAttribute netAttribute, INetworkSource netSource, Type t) { esriNetworkElementType eType = netSource.ElementType; if (eType == esriNetworkElementType.esriNETEdge) { SetEvaluator(netAttribute, netSource, t, esriNetworkEdgeDirection.esriNEDAlongDigitized); SetEvaluator(netAttribute, netSource, t, esriNetworkEdgeDirection.esriNEDAgainstDigitized); } else { SetEvaluator(netAttribute, netSource, t, esriNetworkEdgeDirection.esriNEDNone); } } public static void SetEvaluator(IEvaluatedNetworkAttribute netAttribute, INetworkSource netSource, Type t, esriNetworkEdgeDirection dirType) { object obj = Activator.CreateInstance(t); INetworkEvaluator eval = obj as INetworkEvaluator; netAttribute.set_Evaluator(netSource, dirType, eval); } } }