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//------------------------------------------------------------------------------
// <copyright file="HandlerBase.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
// <owner current="true" primary="true">[....]</owner>
// <owner current="true" primary="false">[....]</owner>
//------------------------------------------------------------------------------
namespace System.Data.Common {
using System;
using System.Collections;
using System.Configuration;
using System.Diagnostics;
using System.Globalization;
using System.Xml;
internal static class HandlerBase {
static internal void CheckForChildNodes(XmlNode node) {
if (node.HasChildNodes) {
throw ADP.ConfigBaseNoChildNodes(node.FirstChild);
}
}
static private void CheckForNonElement(XmlNode node) {
if (XmlNodeType.Element != node.NodeType) {
throw ADP.ConfigBaseElementsOnly(node);
}
}
static internal void CheckForUnrecognizedAttributes(XmlNode node) {
if (0 != node.Attributes.Count) {
throw ADP.ConfigUnrecognizedAttributes(node);
}
}
// skip whitespace and comments, throws if non-element
static internal bool IsIgnorableAlsoCheckForNonElement(XmlNode node) {
if ((XmlNodeType.Comment == node.NodeType) || (XmlNodeType.Whitespace == node.NodeType)) {
return true;
}
CheckForNonElement(node);
return false;
}
static internal string RemoveAttribute(XmlNode node, string name, bool required, bool allowEmpty) {
XmlNode attribute = node.Attributes.RemoveNamedItem(name);
if (null == attribute) {
if (required) {
throw ADP.ConfigRequiredAttributeMissing(name, node);
}
return null;
}
string value = attribute.Value;
if (!allowEmpty && (0 == value.Length)) {
throw ADP.ConfigRequiredAttributeEmpty(name, node);
}
return value;
}
static internal DataSet CloneParent(DataSet parentConfig, bool insenstive) {
if (null == parentConfig) {
parentConfig = new DataSet(DbProviderFactoriesConfigurationHandler.sectionName);
parentConfig.CaseSensitive = !insenstive;
parentConfig.Locale = CultureInfo.InvariantCulture;
}
else {
parentConfig = parentConfig.Copy();
}
return parentConfig;
}
}
}
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