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view software/mpdl-services/mpiwg-mpdl-cms/src/de/mpg/mpiwg/berlin/mpdl/cms/transform/PageTransformer.java @ 23:e845310098ba
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author | Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de> |
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date | Tue, 27 Nov 2012 12:35:19 +0100 |
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package de.mpg.mpiwg.berlin.mpdl.cms.transform; import java.io.IOException; import java.io.StringReader; import java.io.StringWriter; import java.net.URL; import javax.xml.transform.stream.StreamSource; import de.mpg.mpiwg.berlin.mpdl.cms.document.MetadataRecord; import de.mpg.mpiwg.berlin.mpdl.exception.ApplicationException; import net.sf.saxon.s9api.Processor; import net.sf.saxon.s9api.QName; import net.sf.saxon.s9api.SaxonApiException; import net.sf.saxon.s9api.Serializer; import net.sf.saxon.s9api.XdmAtomicValue; import net.sf.saxon.s9api.XdmValue; import net.sf.saxon.s9api.XsltCompiler; import net.sf.saxon.s9api.XsltExecutable; import net.sf.saxon.s9api.XsltTransformer; public class PageTransformer { private int counter = 0; private Processor processor; private XsltCompiler xsltCompiler; private XsltTransformer pageTeiTransformer; private XsltTransformer pageEchoTransformer; private XsltTransformer pageArchimedesTransformer; private XsltTransformer pageXhtmlTransformer; private XsltTransformer pageXmlTransformer; public PageTransformer() throws ApplicationException { init(); } private void init() throws ApplicationException { try { processor = new Processor(false); xsltCompiler = processor.newXsltCompiler(); URL getFragmentXslUrl = PageTransformer.class.getResource("pageTei.xsl"); StreamSource xslStreamSource = new StreamSource(getFragmentXslUrl.openStream()); XsltExecutable xsltExecutable = xsltCompiler.compile(xslStreamSource); pageTeiTransformer = xsltExecutable.load(); getFragmentXslUrl = PageTransformer.class.getResource("pageEcho.xsl"); xslStreamSource = new StreamSource(getFragmentXslUrl.openStream()); xsltExecutable = xsltCompiler.compile(xslStreamSource); pageEchoTransformer = xsltExecutable.load(); getFragmentXslUrl = PageTransformer.class.getResource("pageArchimedes.xsl"); xslStreamSource = new StreamSource(getFragmentXslUrl.openStream()); xsltExecutable = xsltCompiler.compile(xslStreamSource); pageArchimedesTransformer = xsltExecutable.load(); getFragmentXslUrl = PageTransformer.class.getResource("pageXhtml.xsl"); xslStreamSource = new StreamSource(getFragmentXslUrl.openStream()); xsltExecutable = xsltCompiler.compile(xslStreamSource); pageXhtmlTransformer = xsltExecutable.load(); getFragmentXslUrl = PageTransformer.class.getResource("pageXml.xsl"); xslStreamSource = new StreamSource(getFragmentXslUrl.openStream()); xsltExecutable = xsltCompiler.compile(xslStreamSource); pageXmlTransformer = xsltExecutable.load(); } catch (SaxonApiException e) { throw new ApplicationException(e); } catch (IOException e) { throw new ApplicationException(e); } } public String transform(String inputStr, MetadataRecord mdRecord, int page, String outputFormat) throws ApplicationException { String pageFragment = null; String schemaName = mdRecord.getSchemaName(); if (schemaName != null) schemaName = schemaName.toLowerCase(); try { XsltTransformer transformer = null; if (schemaName != null && schemaName.equals("tei") && outputFormat.equals("html")) transformer = pageTeiTransformer; else if (schemaName != null && schemaName.equals("echo") && outputFormat.equals("html")) transformer = pageEchoTransformer; else if (schemaName != null && schemaName.equals("archimedes") && outputFormat.equals("html")) transformer = pageArchimedesTransformer; else if (schemaName != null && (schemaName.equals("html") || schemaName.equals("xhtml")) && outputFormat.equals("html")) transformer = pageXhtmlTransformer; else if (outputFormat.equals("xmlDisplay")) transformer = pageXmlTransformer; else transformer = pageTeiTransformer; StringReader inputStrReader = new StringReader(inputStr); StreamSource xmlDoc = new StreamSource(inputStrReader); Serializer serializer = new Serializer(); serializer.setOutputWriter(new StringWriter()); serializer.setOutputProperty(Serializer.Property.SAXON_STYLESHEET_VERSION, "2.0"); serializer.setOutputProperty(Serializer.Property.METHOD, "xml"); serializer.setOutputProperty(Serializer.Property.MEDIA_TYPE, "text/html"); serializer.setOutputProperty(Serializer.Property.INDENT, "no"); serializer.setOutputProperty(Serializer.Property.OMIT_XML_DECLARATION, "yes"); serializer.setOutputProperty(Serializer.Property.ENCODING, "utf-8"); transformer.setSource(xmlDoc); transformer.setDestination(serializer); String echoFiguresDir = mdRecord.getEchoFiguresDir(); QName echoFiguresDirQName = new QName("echoFiguresDir"); XdmValue echoFiguresDirXdmValue = new XdmAtomicValue(echoFiguresDir); transformer.setParameter(echoFiguresDirQName, echoFiguresDirXdmValue); String echoPageImgDir = mdRecord.getEchoPageImageDir(); QName echoPageImgDirQName = new QName("echoPageImgDir"); XdmValue echoPageImgDirXdmValue = new XdmAtomicValue(echoPageImgDir); transformer.setParameter(echoPageImgDirQName, echoPageImgDirXdmValue); transformer.transform(); pageFragment = serializer.getOutputDestination().toString(); } catch (Exception e) { throw new ApplicationException(e); } counter++; if (counter == 100) init(); return pageFragment; } }