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| using System; | ||
| using Zoom.Net.YazSharp; | ||
| using System.Xml; | ||
|
|
||
| namespace Z3950Search | ||
| { | ||
| using System.IO; | ||
| using System.Text; | ||
| using System.Xml.Xsl; | ||
|
|
||
| public partial class Default : System.Web.UI.Page | ||
| { | ||
| public const int MaximumNumberOfResults = 100; | ||
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| public const string TransformationXslt = | ||
| @"<xsl:stylesheet version=""1.0"" xmlns:xsl=""http://www.w3.org/1999/XSL/Transform"" xmlns:ns0=""http://www.altova.com/xslt-extensions"" xmlns:xs=""http://www.w3.org/2001/XMLSchema"" exclude-result-prefixes=""ns0 xs""> | ||
| <xsl:output method=""xml"" indent=""yes""/> | ||
| <xsl:param name=""input"" select=""/..""/> | ||
| <xsl:template match=""/""> | ||
| <xsl:variable name=""var1_initial"" select="".""/> | ||
| <Items> | ||
| <DataSource>CC0C9385-CD07-4B90-96B7-E8ADE13F6DC2</DataSource> | ||
| <Rank> | ||
| 0 | ||
| </Rank> | ||
| <xsl:for-each select=""record-list""> | ||
| <xsl:variable name=""var11_current"" select="".""/> | ||
| <Title> | ||
| <xsl:value-of select=""dc-record/title""/> | ||
| </Title> | ||
| </xsl:for-each> | ||
| <xsl:for-each select=""record-list/dc-record/description""> | ||
| <xsl:variable name=""var12_current"" select="".""/> | ||
| <Summary> | ||
| <xsl:value-of select="".""/> | ||
| </Summary> | ||
| </xsl:for-each> | ||
| <Date> | ||
| 2003-11-03T00:00:00Z | ||
| </Date> | ||
| <Authors> | ||
| <SearchResultAuthor> | ||
| <xsl:for-each select=""record-list""> | ||
| <xsl:variable name=""var13_current"" select="".""/> | ||
| <Name> | ||
| <xsl:value-of select=""dc-record/contributor""/> | ||
| </Name> | ||
| </xsl:for-each> | ||
| </SearchResultAuthor> | ||
| </Authors> | ||
| <Categories> | ||
| <xsl:for-each select=""record-list""> | ||
| <xsl:variable name=""var14_current"" select="".""/> | ||
| <string> | ||
| <xsl:value-of select=""dc-record/type""/> | ||
| </string> | ||
| </xsl:for-each> | ||
| </Categories> | ||
| <Links> | ||
| <SearchResultLink> | ||
| <Title>Oxford</Title> | ||
| <Url>https://www.ox.ac.uk/research/libraries?wssl=1</Url> | ||
| </SearchResultLink> | ||
| </Links> | ||
| </Items> | ||
| </xsl:template> | ||
| </xsl:stylesheet>"; | ||
|
|
||
| protected void Page_Load(object sender, EventArgs e) | ||
| { | ||
| // Create a connection object to the server | ||
| // In this example, I am connecting to Oxford library | ||
| // For a list of publicly known Z39.50 endpoints, refer to: | ||
| // http://www.loc.gov/z3950/gateway.html | ||
| var connection = new Connection("library.ox.ac.uk", 210) | ||
| { | ||
| DatabaseName = "ADVANCE", | ||
| Syntax = Zoom.Net.RecordSyntax.XML | ||
| }; | ||
| // Connect | ||
| connection.Connect(); | ||
|
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||
| // Declare the query either in PQF or CQL according to whether the Z39.50 implementation at the endpoint support it. | ||
| // The following query is in PQF format | ||
| var query = "@attr 1=4 kennedy"; | ||
| var q = new PrefixQuery(query); | ||
|
|
||
| // Get the search results in binary format | ||
| // Note that each result is in XML format | ||
| var results = connection.Search(q); | ||
|
|
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| // Limit the number of results either by the maximum number of results allowed or by the number of results returned | ||
| var numberOfResults = results.Count < MaximumNumberOfResults ? results.Count : MaximumNumberOfResults; | ||
|
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| var resultXml = new StringBuilder("<SearchResultCollection>"); | ||
|
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| for (uint i = 0; i < numberOfResults; i++) | ||
| { | ||
| try | ||
| { | ||
| resultXml.Append( | ||
| Transform( | ||
| Encoding.UTF8.GetString(results[i].Content), | ||
| TransformationXslt)); | ||
| } | ||
| catch | ||
| { | ||
| //// todo: log the exception | ||
| } | ||
| } | ||
|
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| resultXml.Append("</SearchResultCollection>"); | ||
|
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| this.ltrlBookDetails.Text = resultXml.ToString().Replace("<?xml version=\"1.0\" encoding=\"utf-16\"?>", string.Empty); | ||
| } | ||
|
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| private static string Transform(string toBeTransFormed, string transformationFile) | ||
| { | ||
| string output = string.Empty; | ||
|
|
||
| if (string.IsNullOrEmpty(toBeTransFormed)) | ||
| { | ||
| return output; | ||
| } | ||
|
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| var xmlReaderSettings = new XmlReaderSettings() { DtdProcessing = DtdProcessing.Ignore }; | ||
|
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| using (StringReader srt = new StringReader(transformationFile)) | ||
| { | ||
| using (StringReader sri = new StringReader(toBeTransFormed)) | ||
| { | ||
| using (XmlReader xrt = XmlReader.Create(srt, xmlReaderSettings)) | ||
| { | ||
| using (XmlReader xri = XmlReader.Create(sri, xmlReaderSettings)) | ||
| { | ||
| XslCompiledTransform xslt = new XslCompiledTransform(); | ||
| xslt.Load(xrt); | ||
| using (StringWriter sw = new StringWriter()) | ||
| { | ||
| using (XmlWriter xwo = XmlWriter.Create(sw, xslt.OutputSettings)) | ||
| { | ||
| xslt.Transform(xri, xwo); | ||
| output = sw.ToString(); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return output; | ||
| } | ||
| } | ||
| } |
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